Tools.cpp revision 264464
1//===--- Tools.cpp - Tools Implementations --------------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9 10#include "Tools.h" 11#include "InputInfo.h" 12#include "ToolChains.h" 13#include "clang/Basic/ObjCRuntime.h" 14#include "clang/Basic/Version.h" 15#include "clang/Driver/Action.h" 16#include "clang/Driver/Compilation.h" 17#include "clang/Driver/Driver.h" 18#include "clang/Driver/DriverDiagnostic.h" 19#include "clang/Driver/Job.h" 20#include "clang/Driver/Options.h" 21#include "clang/Driver/SanitizerArgs.h" 22#include "clang/Driver/ToolChain.h" 23#include "clang/Driver/Util.h" 24#include "clang/Sema/SemaDiagnostic.h" 25#include "llvm/ADT/SmallString.h" 26#include "llvm/ADT/StringExtras.h" 27#include "llvm/ADT/StringSwitch.h" 28#include "llvm/ADT/Twine.h" 29#include "llvm/Option/Arg.h" 30#include "llvm/Option/ArgList.h" 31#include "llvm/Option/Option.h" 32#include "llvm/Support/ErrorHandling.h" 33#include "llvm/Support/FileSystem.h" 34#include "llvm/Support/Format.h" 35#include "llvm/Support/Host.h" 36#include "llvm/Support/Path.h" 37#include "llvm/Support/Program.h" 38#include "llvm/Support/Process.h" 39#include "llvm/Support/raw_ostream.h" 40#include <sys/stat.h> 41 42using namespace clang::driver; 43using namespace clang::driver::tools; 44using namespace clang; 45using namespace llvm::opt; 46 47/// CheckPreprocessingOptions - Perform some validation of preprocessing 48/// arguments that is shared with gcc. 49static void CheckPreprocessingOptions(const Driver &D, const ArgList &Args) { 50 if (Arg *A = Args.getLastArg(options::OPT_C, options::OPT_CC)) 51 if (!Args.hasArg(options::OPT_E) && !D.CCCIsCPP()) 52 D.Diag(diag::err_drv_argument_only_allowed_with) 53 << A->getAsString(Args) << "-E"; 54} 55 56/// CheckCodeGenerationOptions - Perform some validation of code generation 57/// arguments that is shared with gcc. 58static void CheckCodeGenerationOptions(const Driver &D, const ArgList &Args) { 59 // In gcc, only ARM checks this, but it seems reasonable to check universally. 60 if (Args.hasArg(options::OPT_static)) 61 if (const Arg *A = Args.getLastArg(options::OPT_dynamic, 62 options::OPT_mdynamic_no_pic)) 63 D.Diag(diag::err_drv_argument_not_allowed_with) 64 << A->getAsString(Args) << "-static"; 65} 66 67// Quote target names for inclusion in GNU Make dependency files. 68// Only the characters '$', '#', ' ', '\t' are quoted. 69static void QuoteTarget(StringRef Target, 70 SmallVectorImpl<char> &Res) { 71 for (unsigned i = 0, e = Target.size(); i != e; ++i) { 72 switch (Target[i]) { 73 case ' ': 74 case '\t': 75 // Escape the preceding backslashes 76 for (int j = i - 1; j >= 0 && Target[j] == '\\'; --j) 77 Res.push_back('\\'); 78 79 // Escape the space/tab 80 Res.push_back('\\'); 81 break; 82 case '$': 83 Res.push_back('$'); 84 break; 85 case '#': 86 Res.push_back('\\'); 87 break; 88 default: 89 break; 90 } 91 92 Res.push_back(Target[i]); 93 } 94} 95 96static void addDirectoryList(const ArgList &Args, 97 ArgStringList &CmdArgs, 98 const char *ArgName, 99 const char *EnvVar) { 100 const char *DirList = ::getenv(EnvVar); 101 bool CombinedArg = false; 102 103 if (!DirList) 104 return; // Nothing to do. 105 106 StringRef Name(ArgName); 107 if (Name.equals("-I") || Name.equals("-L")) 108 CombinedArg = true; 109 110 StringRef Dirs(DirList); 111 if (Dirs.empty()) // Empty string should not add '.'. 112 return; 113 114 StringRef::size_type Delim; 115 while ((Delim = Dirs.find(llvm::sys::EnvPathSeparator)) != StringRef::npos) { 116 if (Delim == 0) { // Leading colon. 117 if (CombinedArg) { 118 CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + ".")); 119 } else { 120 CmdArgs.push_back(ArgName); 121 CmdArgs.push_back("."); 122 } 123 } else { 124 if (CombinedArg) { 125 CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + Dirs.substr(0, Delim))); 126 } else { 127 CmdArgs.push_back(ArgName); 128 CmdArgs.push_back(Args.MakeArgString(Dirs.substr(0, Delim))); 129 } 130 } 131 Dirs = Dirs.substr(Delim + 1); 132 } 133 134 if (Dirs.empty()) { // Trailing colon. 135 if (CombinedArg) { 136 CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + ".")); 137 } else { 138 CmdArgs.push_back(ArgName); 139 CmdArgs.push_back("."); 140 } 141 } else { // Add the last path. 142 if (CombinedArg) { 143 CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + Dirs)); 144 } else { 145 CmdArgs.push_back(ArgName); 146 CmdArgs.push_back(Args.MakeArgString(Dirs)); 147 } 148 } 149} 150 151static void AddLinkerInputs(const ToolChain &TC, 152 const InputInfoList &Inputs, const ArgList &Args, 153 ArgStringList &CmdArgs) { 154 const Driver &D = TC.getDriver(); 155 156 // Add extra linker input arguments which are not treated as inputs 157 // (constructed via -Xarch_). 158 Args.AddAllArgValues(CmdArgs, options::OPT_Zlinker_input); 159 160 for (InputInfoList::const_iterator 161 it = Inputs.begin(), ie = Inputs.end(); it != ie; ++it) { 162 const InputInfo &II = *it; 163 164 if (!TC.HasNativeLLVMSupport()) { 165 // Don't try to pass LLVM inputs unless we have native support. 166 if (II.getType() == types::TY_LLVM_IR || 167 II.getType() == types::TY_LTO_IR || 168 II.getType() == types::TY_LLVM_BC || 169 II.getType() == types::TY_LTO_BC) 170 D.Diag(diag::err_drv_no_linker_llvm_support) 171 << TC.getTripleString(); 172 } 173 174 // Add filenames immediately. 175 if (II.isFilename()) { 176 CmdArgs.push_back(II.getFilename()); 177 continue; 178 } 179 180 // Otherwise, this is a linker input argument. 181 const Arg &A = II.getInputArg(); 182 183 // Handle reserved library options. 184 if (A.getOption().matches(options::OPT_Z_reserved_lib_stdcxx)) { 185 TC.AddCXXStdlibLibArgs(Args, CmdArgs); 186 } else if (A.getOption().matches(options::OPT_Z_reserved_lib_cckext)) { 187 TC.AddCCKextLibArgs(Args, CmdArgs); 188 } else 189 A.renderAsInput(Args, CmdArgs); 190 } 191 192 // LIBRARY_PATH - included following the user specified library paths. 193 addDirectoryList(Args, CmdArgs, "-L", "LIBRARY_PATH"); 194} 195 196/// \brief Determine whether Objective-C automated reference counting is 197/// enabled. 198static bool isObjCAutoRefCount(const ArgList &Args) { 199 return Args.hasFlag(options::OPT_fobjc_arc, options::OPT_fno_objc_arc, false); 200} 201 202/// \brief Determine whether we are linking the ObjC runtime. 203static bool isObjCRuntimeLinked(const ArgList &Args) { 204 if (isObjCAutoRefCount(Args)) { 205 Args.ClaimAllArgs(options::OPT_fobjc_link_runtime); 206 return true; 207 } 208 return Args.hasArg(options::OPT_fobjc_link_runtime); 209} 210 211static void addProfileRT(const ToolChain &TC, const ArgList &Args, 212 ArgStringList &CmdArgs, 213 llvm::Triple Triple) { 214 if (!(Args.hasArg(options::OPT_fprofile_arcs) || 215 Args.hasArg(options::OPT_fprofile_generate) || 216 Args.hasArg(options::OPT_fcreate_profile) || 217 Args.hasArg(options::OPT_coverage))) 218 return; 219 220 // GCC links libgcov.a by adding -L<inst>/gcc/lib/gcc/<triple>/<ver> -lgcov to 221 // the link line. We cannot do the same thing because unlike gcov there is a 222 // libprofile_rt.so. We used to use the -l:libprofile_rt.a syntax, but that is 223 // not supported by old linkers. 224 std::string ProfileRT = 225 std::string(TC.getDriver().Dir) + "/../lib/libprofile_rt.a"; 226 227 CmdArgs.push_back(Args.MakeArgString(ProfileRT)); 228} 229 230static bool forwardToGCC(const Option &O) { 231 // Don't forward inputs from the original command line. They are added from 232 // InputInfoList. 233 return O.getKind() != Option::InputClass && 234 !O.hasFlag(options::DriverOption) && 235 !O.hasFlag(options::LinkerInput); 236} 237 238void Clang::AddPreprocessingOptions(Compilation &C, 239 const JobAction &JA, 240 const Driver &D, 241 const ArgList &Args, 242 ArgStringList &CmdArgs, 243 const InputInfo &Output, 244 const InputInfoList &Inputs) const { 245 Arg *A; 246 247 CheckPreprocessingOptions(D, Args); 248 249 Args.AddLastArg(CmdArgs, options::OPT_C); 250 Args.AddLastArg(CmdArgs, options::OPT_CC); 251 252 // Handle dependency file generation. 253 if ((A = Args.getLastArg(options::OPT_M, options::OPT_MM)) || 254 (A = Args.getLastArg(options::OPT_MD)) || 255 (A = Args.getLastArg(options::OPT_MMD))) { 256 // Determine the output location. 257 const char *DepFile; 258 if (Arg *MF = Args.getLastArg(options::OPT_MF)) { 259 DepFile = MF->getValue(); 260 C.addFailureResultFile(DepFile, &JA); 261 } else if (Output.getType() == types::TY_Dependencies) { 262 DepFile = Output.getFilename(); 263 } else if (A->getOption().matches(options::OPT_M) || 264 A->getOption().matches(options::OPT_MM)) { 265 DepFile = "-"; 266 } else { 267 DepFile = getDependencyFileName(Args, Inputs); 268 C.addFailureResultFile(DepFile, &JA); 269 } 270 CmdArgs.push_back("-dependency-file"); 271 CmdArgs.push_back(DepFile); 272 273 // Add a default target if one wasn't specified. 274 if (!Args.hasArg(options::OPT_MT) && !Args.hasArg(options::OPT_MQ)) { 275 const char *DepTarget; 276 277 // If user provided -o, that is the dependency target, except 278 // when we are only generating a dependency file. 279 Arg *OutputOpt = Args.getLastArg(options::OPT_o); 280 if (OutputOpt && Output.getType() != types::TY_Dependencies) { 281 DepTarget = OutputOpt->getValue(); 282 } else { 283 // Otherwise derive from the base input. 284 // 285 // FIXME: This should use the computed output file location. 286 SmallString<128> P(Inputs[0].getBaseInput()); 287 llvm::sys::path::replace_extension(P, "o"); 288 DepTarget = Args.MakeArgString(llvm::sys::path::filename(P)); 289 } 290 291 CmdArgs.push_back("-MT"); 292 SmallString<128> Quoted; 293 QuoteTarget(DepTarget, Quoted); 294 CmdArgs.push_back(Args.MakeArgString(Quoted)); 295 } 296 297 if (A->getOption().matches(options::OPT_M) || 298 A->getOption().matches(options::OPT_MD)) 299 CmdArgs.push_back("-sys-header-deps"); 300 } 301 302 if (Args.hasArg(options::OPT_MG)) { 303 if (!A || A->getOption().matches(options::OPT_MD) || 304 A->getOption().matches(options::OPT_MMD)) 305 D.Diag(diag::err_drv_mg_requires_m_or_mm); 306 CmdArgs.push_back("-MG"); 307 } 308 309 Args.AddLastArg(CmdArgs, options::OPT_MP); 310 311 // Convert all -MQ <target> args to -MT <quoted target> 312 for (arg_iterator it = Args.filtered_begin(options::OPT_MT, 313 options::OPT_MQ), 314 ie = Args.filtered_end(); it != ie; ++it) { 315 const Arg *A = *it; 316 A->claim(); 317 318 if (A->getOption().matches(options::OPT_MQ)) { 319 CmdArgs.push_back("-MT"); 320 SmallString<128> Quoted; 321 QuoteTarget(A->getValue(), Quoted); 322 CmdArgs.push_back(Args.MakeArgString(Quoted)); 323 324 // -MT flag - no change 325 } else { 326 A->render(Args, CmdArgs); 327 } 328 } 329 330 // Add -i* options, and automatically translate to 331 // -include-pch/-include-pth for transparent PCH support. It's 332 // wonky, but we include looking for .gch so we can support seamless 333 // replacement into a build system already set up to be generating 334 // .gch files. 335 bool RenderedImplicitInclude = false; 336 for (arg_iterator it = Args.filtered_begin(options::OPT_clang_i_Group), 337 ie = Args.filtered_end(); it != ie; ++it) { 338 const Arg *A = it; 339 340 if (A->getOption().matches(options::OPT_include)) { 341 bool IsFirstImplicitInclude = !RenderedImplicitInclude; 342 RenderedImplicitInclude = true; 343 344 // Use PCH if the user requested it. 345 bool UsePCH = D.CCCUsePCH; 346 347 bool FoundPTH = false; 348 bool FoundPCH = false; 349 SmallString<128> P(A->getValue()); 350 // We want the files to have a name like foo.h.pch. Add a dummy extension 351 // so that replace_extension does the right thing. 352 P += ".dummy"; 353 if (UsePCH) { 354 llvm::sys::path::replace_extension(P, "pch"); 355 if (llvm::sys::fs::exists(P.str())) 356 FoundPCH = true; 357 } 358 359 if (!FoundPCH) { 360 llvm::sys::path::replace_extension(P, "pth"); 361 if (llvm::sys::fs::exists(P.str())) 362 FoundPTH = true; 363 } 364 365 if (!FoundPCH && !FoundPTH) { 366 llvm::sys::path::replace_extension(P, "gch"); 367 if (llvm::sys::fs::exists(P.str())) { 368 FoundPCH = UsePCH; 369 FoundPTH = !UsePCH; 370 } 371 } 372 373 if (FoundPCH || FoundPTH) { 374 if (IsFirstImplicitInclude) { 375 A->claim(); 376 if (UsePCH) 377 CmdArgs.push_back("-include-pch"); 378 else 379 CmdArgs.push_back("-include-pth"); 380 CmdArgs.push_back(Args.MakeArgString(P.str())); 381 continue; 382 } else { 383 // Ignore the PCH if not first on command line and emit warning. 384 D.Diag(diag::warn_drv_pch_not_first_include) 385 << P.str() << A->getAsString(Args); 386 } 387 } 388 } 389 390 // Not translated, render as usual. 391 A->claim(); 392 A->render(Args, CmdArgs); 393 } 394 395 Args.AddAllArgs(CmdArgs, options::OPT_D, options::OPT_U); 396 Args.AddAllArgs(CmdArgs, options::OPT_I_Group, options::OPT_F, 397 options::OPT_index_header_map); 398 399 // Add -Wp, and -Xassembler if using the preprocessor. 400 401 // FIXME: There is a very unfortunate problem here, some troubled 402 // souls abuse -Wp, to pass preprocessor options in gcc syntax. To 403 // really support that we would have to parse and then translate 404 // those options. :( 405 Args.AddAllArgValues(CmdArgs, options::OPT_Wp_COMMA, 406 options::OPT_Xpreprocessor); 407 408 // -I- is a deprecated GCC feature, reject it. 409 if (Arg *A = Args.getLastArg(options::OPT_I_)) 410 D.Diag(diag::err_drv_I_dash_not_supported) << A->getAsString(Args); 411 412 // If we have a --sysroot, and don't have an explicit -isysroot flag, add an 413 // -isysroot to the CC1 invocation. 414 StringRef sysroot = C.getSysRoot(); 415 if (sysroot != "") { 416 if (!Args.hasArg(options::OPT_isysroot)) { 417 CmdArgs.push_back("-isysroot"); 418 CmdArgs.push_back(C.getArgs().MakeArgString(sysroot)); 419 } 420 } 421 422 // Parse additional include paths from environment variables. 423 // FIXME: We should probably sink the logic for handling these from the 424 // frontend into the driver. It will allow deleting 4 otherwise unused flags. 425 // CPATH - included following the user specified includes (but prior to 426 // builtin and standard includes). 427 addDirectoryList(Args, CmdArgs, "-I", "CPATH"); 428 // C_INCLUDE_PATH - system includes enabled when compiling C. 429 addDirectoryList(Args, CmdArgs, "-c-isystem", "C_INCLUDE_PATH"); 430 // CPLUS_INCLUDE_PATH - system includes enabled when compiling C++. 431 addDirectoryList(Args, CmdArgs, "-cxx-isystem", "CPLUS_INCLUDE_PATH"); 432 // OBJC_INCLUDE_PATH - system includes enabled when compiling ObjC. 433 addDirectoryList(Args, CmdArgs, "-objc-isystem", "OBJC_INCLUDE_PATH"); 434 // OBJCPLUS_INCLUDE_PATH - system includes enabled when compiling ObjC++. 435 addDirectoryList(Args, CmdArgs, "-objcxx-isystem", "OBJCPLUS_INCLUDE_PATH"); 436 437 // Add C++ include arguments, if needed. 438 if (types::isCXX(Inputs[0].getType())) 439 getToolChain().AddClangCXXStdlibIncludeArgs(Args, CmdArgs); 440 441 // Add system include arguments. 442 getToolChain().AddClangSystemIncludeArgs(Args, CmdArgs); 443} 444 445/// getLLVMArchSuffixForARM - Get the LLVM arch name to use for a particular 446/// CPU. 447// 448// FIXME: This is redundant with -mcpu, why does LLVM use this. 449// FIXME: tblgen this, or kill it! 450static const char *getLLVMArchSuffixForARM(StringRef CPU) { 451 return llvm::StringSwitch<const char *>(CPU) 452 .Case("strongarm", "v4") 453 .Cases("arm7tdmi", "arm7tdmi-s", "arm710t", "v4t") 454 .Cases("arm720t", "arm9", "arm9tdmi", "v4t") 455 .Cases("arm920", "arm920t", "arm922t", "v4t") 456 .Cases("arm940t", "ep9312","v4t") 457 .Cases("arm10tdmi", "arm1020t", "v5") 458 .Cases("arm9e", "arm926ej-s", "arm946e-s", "v5e") 459 .Cases("arm966e-s", "arm968e-s", "arm10e", "v5e") 460 .Cases("arm1020e", "arm1022e", "xscale", "iwmmxt", "v5e") 461 .Cases("arm1136j-s", "arm1136jf-s", "arm1176jz-s", "v6") 462 .Cases("arm1176jzf-s", "mpcorenovfp", "mpcore", "v6") 463 .Cases("arm1156t2-s", "arm1156t2f-s", "v6t2") 464 .Cases("cortex-a5", "cortex-a7", "cortex-a8", "v7") 465 .Cases("cortex-a9", "cortex-a12", "cortex-a15", "v7") 466 .Cases("cortex-r4", "cortex-r5", "v7r") 467 .Case("cortex-m0", "v6m") 468 .Case("cortex-m3", "v7m") 469 .Case("cortex-m4", "v7em") 470 .Case("cortex-a9-mp", "v7f") 471 .Case("swift", "v7s") 472 .Cases("cortex-a53", "cortex-a57", "v8") 473 .Default(""); 474} 475 476/// getARMTargetCPU - Get the (LLVM) name of the ARM cpu we are targeting. 477// 478// FIXME: tblgen this. 479static std::string getARMTargetCPU(const ArgList &Args, 480 const llvm::Triple &Triple) { 481 // FIXME: Warn on inconsistent use of -mcpu and -march. 482 483 // If we have -mcpu=, use that. 484 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) { 485 StringRef MCPU = A->getValue(); 486 // Handle -mcpu=native. 487 if (MCPU == "native") 488 return llvm::sys::getHostCPUName(); 489 else 490 return MCPU; 491 } 492 493 StringRef MArch; 494 if (Arg *A = Args.getLastArg(options::OPT_march_EQ)) { 495 // Otherwise, if we have -march= choose the base CPU for that arch. 496 MArch = A->getValue(); 497 } else { 498 // Otherwise, use the Arch from the triple. 499 MArch = Triple.getArchName(); 500 } 501 502 if (Triple.getOS() == llvm::Triple::NetBSD) { 503 if (MArch == "armv6") 504 return "arm1176jzf-s"; 505 } 506 507 // Handle -march=native. 508 std::string NativeMArch; 509 if (MArch == "native") { 510 std::string CPU = llvm::sys::getHostCPUName(); 511 if (CPU != "generic") { 512 // Translate the native cpu into the architecture. The switch below will 513 // then chose the minimum cpu for that arch. 514 NativeMArch = std::string("arm") + getLLVMArchSuffixForARM(CPU); 515 MArch = NativeMArch; 516 } 517 } 518 519 return llvm::StringSwitch<const char *>(MArch) 520 .Cases("armv2", "armv2a","arm2") 521 .Case("armv3", "arm6") 522 .Case("armv3m", "arm7m") 523 .Case("armv4", "strongarm") 524 .Case("armv4t", "arm7tdmi") 525 .Cases("armv5", "armv5t", "arm10tdmi") 526 .Cases("armv5e", "armv5te", "arm1022e") 527 .Case("armv5tej", "arm926ej-s") 528 .Cases("armv6", "armv6k", "arm1136jf-s") 529 .Case("armv6j", "arm1136j-s") 530 .Cases("armv6z", "armv6zk", "arm1176jzf-s") 531 .Case("armv6t2", "arm1156t2-s") 532 .Cases("armv6m", "armv6-m", "cortex-m0") 533 .Cases("armv7", "armv7a", "armv7-a", "cortex-a8") 534 .Cases("armv7em", "armv7e-m", "cortex-m4") 535 .Cases("armv7f", "armv7-f", "cortex-a9-mp") 536 .Cases("armv7s", "armv7-s", "swift") 537 .Cases("armv7r", "armv7-r", "cortex-r4") 538 .Cases("armv7m", "armv7-m", "cortex-m3") 539 .Cases("armv8", "armv8a", "armv8-a", "cortex-a53") 540 .Case("ep9312", "ep9312") 541 .Case("iwmmxt", "iwmmxt") 542 .Case("xscale", "xscale") 543 // If all else failed, return the most base CPU with thumb interworking 544 // supported by LLVM. 545 .Default("arm7tdmi"); 546} 547 548/// getAArch64TargetCPU - Get the (LLVM) name of the AArch64 cpu we are targeting. 549// 550// FIXME: tblgen this. 551static std::string getAArch64TargetCPU(const ArgList &Args, 552 const llvm::Triple &Triple) { 553 // FIXME: Warn on inconsistent use of -mcpu and -march. 554 555 // If we have -mcpu=, use that. 556 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) { 557 StringRef MCPU = A->getValue(); 558 // Handle -mcpu=native. 559 if (MCPU == "native") 560 return llvm::sys::getHostCPUName(); 561 else 562 return MCPU; 563 } 564 565 return "generic"; 566} 567 568// FIXME: Move to target hook. 569static bool isSignedCharDefault(const llvm::Triple &Triple) { 570 switch (Triple.getArch()) { 571 default: 572 return true; 573 574 case llvm::Triple::aarch64: 575 case llvm::Triple::arm: 576 case llvm::Triple::ppc: 577 case llvm::Triple::ppc64: 578 if (Triple.isOSDarwin()) 579 return true; 580 return false; 581 582 case llvm::Triple::ppc64le: 583 case llvm::Triple::systemz: 584 case llvm::Triple::xcore: 585 return false; 586 } 587} 588 589static bool isNoCommonDefault(const llvm::Triple &Triple) { 590 switch (Triple.getArch()) { 591 default: 592 return false; 593 594 case llvm::Triple::xcore: 595 return true; 596 } 597} 598 599// Handle -mfpu=. 600// 601// FIXME: Centralize feature selection, defaulting shouldn't be also in the 602// frontend target. 603static void getAArch64FPUFeatures(const Driver &D, const Arg *A, 604 const ArgList &Args, 605 std::vector<const char *> &Features) { 606 StringRef FPU = A->getValue(); 607 if (FPU == "fp-armv8") { 608 Features.push_back("+fp-armv8"); 609 } else if (FPU == "neon-fp-armv8") { 610 Features.push_back("+fp-armv8"); 611 Features.push_back("+neon"); 612 } else if (FPU == "crypto-neon-fp-armv8") { 613 Features.push_back("+fp-armv8"); 614 Features.push_back("+neon"); 615 Features.push_back("+crypto"); 616 } else if (FPU == "neon") { 617 Features.push_back("+neon"); 618 } else if (FPU == "none") { 619 Features.push_back("-fp-armv8"); 620 Features.push_back("-crypto"); 621 Features.push_back("-neon"); 622 } else 623 D.Diag(diag::err_drv_clang_unsupported) << A->getAsString(Args); 624} 625 626// Handle -mhwdiv=. 627static void getARMHWDivFeatures(const Driver &D, const Arg *A, 628 const ArgList &Args, 629 std::vector<const char *> &Features) { 630 StringRef HWDiv = A->getValue(); 631 if (HWDiv == "arm") { 632 Features.push_back("+hwdiv-arm"); 633 Features.push_back("-hwdiv"); 634 } else if (HWDiv == "thumb") { 635 Features.push_back("-hwdiv-arm"); 636 Features.push_back("+hwdiv"); 637 } else if (HWDiv == "arm,thumb" || HWDiv == "thumb,arm") { 638 Features.push_back("+hwdiv-arm"); 639 Features.push_back("+hwdiv"); 640 } else if (HWDiv == "none") { 641 Features.push_back("-hwdiv-arm"); 642 Features.push_back("-hwdiv"); 643 } else 644 D.Diag(diag::err_drv_clang_unsupported) << A->getAsString(Args); 645} 646 647// Handle -mfpu=. 648// 649// FIXME: Centralize feature selection, defaulting shouldn't be also in the 650// frontend target. 651static void getARMFPUFeatures(const Driver &D, const Arg *A, 652 const ArgList &Args, 653 std::vector<const char *> &Features) { 654 StringRef FPU = A->getValue(); 655 656 // Set the target features based on the FPU. 657 if (FPU == "fpa" || FPU == "fpe2" || FPU == "fpe3" || FPU == "maverick") { 658 // Disable any default FPU support. 659 Features.push_back("-vfp2"); 660 Features.push_back("-vfp3"); 661 Features.push_back("-neon"); 662 } else if (FPU == "vfp3-d16" || FPU == "vfpv3-d16") { 663 Features.push_back("+vfp3"); 664 Features.push_back("+d16"); 665 Features.push_back("-neon"); 666 } else if (FPU == "vfp") { 667 Features.push_back("+vfp2"); 668 Features.push_back("-neon"); 669 } else if (FPU == "vfp3" || FPU == "vfpv3") { 670 Features.push_back("+vfp3"); 671 Features.push_back("-neon"); 672 } else if (FPU == "fp-armv8") { 673 Features.push_back("+fp-armv8"); 674 Features.push_back("-neon"); 675 Features.push_back("-crypto"); 676 } else if (FPU == "neon-fp-armv8") { 677 Features.push_back("+fp-armv8"); 678 Features.push_back("+neon"); 679 Features.push_back("-crypto"); 680 } else if (FPU == "crypto-neon-fp-armv8") { 681 Features.push_back("+fp-armv8"); 682 Features.push_back("+neon"); 683 Features.push_back("+crypto"); 684 } else if (FPU == "neon") { 685 Features.push_back("+neon"); 686 } else if (FPU == "none") { 687 Features.push_back("-vfp2"); 688 Features.push_back("-vfp3"); 689 Features.push_back("-vfp4"); 690 Features.push_back("-fp-armv8"); 691 Features.push_back("-crypto"); 692 Features.push_back("-neon"); 693 } else 694 D.Diag(diag::err_drv_clang_unsupported) << A->getAsString(Args); 695} 696 697// Select the float ABI as determined by -msoft-float, -mhard-float, and 698// -mfloat-abi=. 699static StringRef getARMFloatABI(const Driver &D, 700 const ArgList &Args, 701 const llvm::Triple &Triple) { 702 StringRef FloatABI; 703 if (Arg *A = Args.getLastArg(options::OPT_msoft_float, 704 options::OPT_mhard_float, 705 options::OPT_mfloat_abi_EQ)) { 706 if (A->getOption().matches(options::OPT_msoft_float)) 707 FloatABI = "soft"; 708 else if (A->getOption().matches(options::OPT_mhard_float)) 709 FloatABI = "hard"; 710 else { 711 FloatABI = A->getValue(); 712 if (FloatABI != "soft" && FloatABI != "softfp" && FloatABI != "hard") { 713 D.Diag(diag::err_drv_invalid_mfloat_abi) 714 << A->getAsString(Args); 715 FloatABI = "soft"; 716 } 717 } 718 } 719 720 // If unspecified, choose the default based on the platform. 721 if (FloatABI.empty()) { 722 switch (Triple.getOS()) { 723 case llvm::Triple::Darwin: 724 case llvm::Triple::MacOSX: 725 case llvm::Triple::IOS: { 726 // Darwin defaults to "softfp" for v6 and v7. 727 // 728 // FIXME: Factor out an ARM class so we can cache the arch somewhere. 729 std::string ArchName = 730 getLLVMArchSuffixForARM(getARMTargetCPU(Args, Triple)); 731 if (StringRef(ArchName).startswith("v6") || 732 StringRef(ArchName).startswith("v7")) 733 FloatABI = "softfp"; 734 else 735 FloatABI = "soft"; 736 break; 737 } 738 739 case llvm::Triple::FreeBSD: 740 // FreeBSD defaults to soft float 741 FloatABI = "soft"; 742 break; 743 744 default: 745 switch(Triple.getEnvironment()) { 746 case llvm::Triple::GNUEABIHF: 747 FloatABI = "hard"; 748 break; 749 case llvm::Triple::GNUEABI: 750 FloatABI = "softfp"; 751 break; 752 case llvm::Triple::EABI: 753 // EABI is always AAPCS, and if it was not marked 'hard', it's softfp 754 FloatABI = "softfp"; 755 break; 756 case llvm::Triple::Android: { 757 std::string ArchName = 758 getLLVMArchSuffixForARM(getARMTargetCPU(Args, Triple)); 759 if (StringRef(ArchName).startswith("v7")) 760 FloatABI = "softfp"; 761 else 762 FloatABI = "soft"; 763 break; 764 } 765 default: 766 // Assume "soft", but warn the user we are guessing. 767 FloatABI = "soft"; 768 D.Diag(diag::warn_drv_assuming_mfloat_abi_is) << "soft"; 769 break; 770 } 771 } 772 } 773 774 return FloatABI; 775} 776 777static void getARMTargetFeatures(const Driver &D, const llvm::Triple &Triple, 778 const ArgList &Args, 779 std::vector<const char *> &Features) { 780 StringRef FloatABI = getARMFloatABI(D, Args, Triple); 781 // FIXME: Note, this is a hack, the LLVM backend doesn't actually use these 782 // yet (it uses the -mfloat-abi and -msoft-float options), and it is 783 // stripped out by the ARM target. 784 // Use software floating point operations? 785 if (FloatABI == "soft") 786 Features.push_back("+soft-float"); 787 788 // Use software floating point argument passing? 789 if (FloatABI != "hard") 790 Features.push_back("+soft-float-abi"); 791 792 // Honor -mfpu=. 793 if (const Arg *A = Args.getLastArg(options::OPT_mfpu_EQ)) 794 getARMFPUFeatures(D, A, Args, Features); 795 if (const Arg *A = Args.getLastArg(options::OPT_mhwdiv_EQ)) 796 getARMHWDivFeatures(D, A, Args, Features); 797 798 // Setting -msoft-float effectively disables NEON because of the GCC 799 // implementation, although the same isn't true of VFP or VFP3. 800 if (FloatABI == "soft") 801 Features.push_back("-neon"); 802 803 // En/disable crc 804 if (Arg *A = Args.getLastArg(options::OPT_mcrc, 805 options::OPT_mnocrc)) { 806 if (A->getOption().matches(options::OPT_mcrc)) 807 Features.push_back("+crc"); 808 else 809 Features.push_back("-crc"); 810 } 811} 812 813void Clang::AddARMTargetArgs(const ArgList &Args, 814 ArgStringList &CmdArgs, 815 bool KernelOrKext) const { 816 const Driver &D = getToolChain().getDriver(); 817 // Get the effective triple, which takes into account the deployment target. 818 std::string TripleStr = getToolChain().ComputeEffectiveClangTriple(Args); 819 llvm::Triple Triple(TripleStr); 820 std::string CPUName = getARMTargetCPU(Args, Triple); 821 822 // Select the ABI to use. 823 // 824 // FIXME: Support -meabi. 825 const char *ABIName = 0; 826 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ)) { 827 ABIName = A->getValue(); 828 } else if (Triple.isOSDarwin()) { 829 // The backend is hardwired to assume AAPCS for M-class processors, ensure 830 // the frontend matches that. 831 if (Triple.getEnvironment() == llvm::Triple::EABI || 832 StringRef(CPUName).startswith("cortex-m")) { 833 ABIName = "aapcs"; 834 } else { 835 ABIName = "apcs-gnu"; 836 } 837 } else { 838 // Select the default based on the platform. 839 switch(Triple.getEnvironment()) { 840 case llvm::Triple::Android: 841 case llvm::Triple::GNUEABI: 842 case llvm::Triple::GNUEABIHF: 843 ABIName = "aapcs-linux"; 844 break; 845 case llvm::Triple::EABI: 846 ABIName = "aapcs"; 847 break; 848 default: 849 ABIName = "apcs-gnu"; 850 } 851 } 852 CmdArgs.push_back("-target-abi"); 853 CmdArgs.push_back(ABIName); 854 855 // Determine floating point ABI from the options & target defaults. 856 StringRef FloatABI = getARMFloatABI(D, Args, Triple); 857 if (FloatABI == "soft") { 858 // Floating point operations and argument passing are soft. 859 // 860 // FIXME: This changes CPP defines, we need -target-soft-float. 861 CmdArgs.push_back("-msoft-float"); 862 CmdArgs.push_back("-mfloat-abi"); 863 CmdArgs.push_back("soft"); 864 } else if (FloatABI == "softfp") { 865 // Floating point operations are hard, but argument passing is soft. 866 CmdArgs.push_back("-mfloat-abi"); 867 CmdArgs.push_back("soft"); 868 } else { 869 // Floating point operations and argument passing are hard. 870 assert(FloatABI == "hard" && "Invalid float abi!"); 871 CmdArgs.push_back("-mfloat-abi"); 872 CmdArgs.push_back("hard"); 873 } 874 875 // Kernel code has more strict alignment requirements. 876 if (KernelOrKext) { 877 if (!Triple.isiOS() || Triple.isOSVersionLT(6)) { 878 CmdArgs.push_back("-backend-option"); 879 CmdArgs.push_back("-arm-long-calls"); 880 } 881 882 CmdArgs.push_back("-backend-option"); 883 CmdArgs.push_back("-arm-strict-align"); 884 885 // The kext linker doesn't know how to deal with movw/movt. 886 CmdArgs.push_back("-backend-option"); 887 CmdArgs.push_back("-arm-use-movt=0"); 888 } 889 890 // Setting -mno-global-merge disables the codegen global merge pass. Setting 891 // -mglobal-merge has no effect as the pass is enabled by default. 892 if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge, 893 options::OPT_mno_global_merge)) { 894 if (A->getOption().matches(options::OPT_mno_global_merge)) 895 CmdArgs.push_back("-mno-global-merge"); 896 } 897 898 if (!Args.hasFlag(options::OPT_mimplicit_float, 899 options::OPT_mno_implicit_float, 900 true)) 901 CmdArgs.push_back("-no-implicit-float"); 902 903 // llvm does not support reserving registers in general. There is support 904 // for reserving r9 on ARM though (defined as a platform-specific register 905 // in ARM EABI). 906 if (Args.hasArg(options::OPT_ffixed_r9)) { 907 CmdArgs.push_back("-backend-option"); 908 CmdArgs.push_back("-arm-reserve-r9"); 909 } 910} 911 912// Get CPU and ABI names. They are not independent 913// so we have to calculate them together. 914static void getMipsCPUAndABI(const ArgList &Args, 915 const llvm::Triple &Triple, 916 StringRef &CPUName, 917 StringRef &ABIName) { 918 const char *DefMips32CPU = "mips32"; 919 const char *DefMips64CPU = "mips64"; 920 921 if (Arg *A = Args.getLastArg(options::OPT_march_EQ, 922 options::OPT_mcpu_EQ)) 923 CPUName = A->getValue(); 924 925 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ)) { 926 ABIName = A->getValue(); 927 // Convert a GNU style Mips ABI name to the name 928 // accepted by LLVM Mips backend. 929 ABIName = llvm::StringSwitch<llvm::StringRef>(ABIName) 930 .Case("32", "o32") 931 .Case("64", "n64") 932 .Default(ABIName); 933 } 934 935 // Setup default CPU and ABI names. 936 if (CPUName.empty() && ABIName.empty()) { 937 switch (Triple.getArch()) { 938 default: 939 llvm_unreachable("Unexpected triple arch name"); 940 case llvm::Triple::mips: 941 case llvm::Triple::mipsel: 942 CPUName = DefMips32CPU; 943 break; 944 case llvm::Triple::mips64: 945 case llvm::Triple::mips64el: 946 CPUName = DefMips64CPU; 947 break; 948 } 949 } 950 951 if (!ABIName.empty()) { 952 // Deduce CPU name from ABI name. 953 CPUName = llvm::StringSwitch<const char *>(ABIName) 954 .Cases("32", "o32", "eabi", DefMips32CPU) 955 .Cases("n32", "n64", "64", DefMips64CPU) 956 .Default(""); 957 } 958 else if (!CPUName.empty()) { 959 // Deduce ABI name from CPU name. 960 ABIName = llvm::StringSwitch<const char *>(CPUName) 961 .Cases("mips32", "mips32r2", "o32") 962 .Cases("mips64", "mips64r2", "n64") 963 .Default(""); 964 } 965 966 // FIXME: Warn on inconsistent cpu and abi usage. 967} 968 969// Convert ABI name to the GNU tools acceptable variant. 970static StringRef getGnuCompatibleMipsABIName(StringRef ABI) { 971 return llvm::StringSwitch<llvm::StringRef>(ABI) 972 .Case("o32", "32") 973 .Case("n64", "64") 974 .Default(ABI); 975} 976 977// Select the MIPS float ABI as determined by -msoft-float, -mhard-float, 978// and -mfloat-abi=. 979static StringRef getMipsFloatABI(const Driver &D, const ArgList &Args) { 980 StringRef FloatABI; 981 if (Arg *A = Args.getLastArg(options::OPT_msoft_float, 982 options::OPT_mhard_float, 983 options::OPT_mfloat_abi_EQ)) { 984 if (A->getOption().matches(options::OPT_msoft_float)) 985 FloatABI = "soft"; 986 else if (A->getOption().matches(options::OPT_mhard_float)) 987 FloatABI = "hard"; 988 else { 989 FloatABI = A->getValue(); 990 if (FloatABI != "soft" && FloatABI != "hard") { 991 D.Diag(diag::err_drv_invalid_mfloat_abi) << A->getAsString(Args); 992 FloatABI = "hard"; 993 } 994 } 995 } 996 997 // If unspecified, choose the default based on the platform. 998 if (FloatABI.empty()) { 999 // Assume "hard", because it's a default value used by gcc. 1000 // When we start to recognize specific target MIPS processors, 1001 // we will be able to select the default more correctly. 1002 FloatABI = "hard"; 1003 } 1004 1005 return FloatABI; 1006} 1007 1008static void AddTargetFeature(const ArgList &Args, 1009 std::vector<const char *> &Features, 1010 OptSpecifier OnOpt, OptSpecifier OffOpt, 1011 StringRef FeatureName) { 1012 if (Arg *A = Args.getLastArg(OnOpt, OffOpt)) { 1013 if (A->getOption().matches(OnOpt)) 1014 Features.push_back(Args.MakeArgString("+" + FeatureName)); 1015 else 1016 Features.push_back(Args.MakeArgString("-" + FeatureName)); 1017 } 1018} 1019 1020static void getMIPSTargetFeatures(const Driver &D, const ArgList &Args, 1021 std::vector<const char *> &Features) { 1022 StringRef FloatABI = getMipsFloatABI(D, Args); 1023 bool IsMips16 = Args.getLastArg(options::OPT_mips16) != NULL; 1024 if (FloatABI == "soft" || (FloatABI == "hard" && IsMips16)) { 1025 // FIXME: Note, this is a hack. We need to pass the selected float 1026 // mode to the MipsTargetInfoBase to define appropriate macros there. 1027 // Now it is the only method. 1028 Features.push_back("+soft-float"); 1029 } 1030 1031 if (Arg *A = Args.getLastArg(options::OPT_mnan_EQ)) { 1032 if (StringRef(A->getValue()) == "2008") 1033 Features.push_back("+nan2008"); 1034 } 1035 1036 AddTargetFeature(Args, Features, options::OPT_msingle_float, 1037 options::OPT_mdouble_float, "single-float"); 1038 AddTargetFeature(Args, Features, options::OPT_mips16, options::OPT_mno_mips16, 1039 "mips16"); 1040 AddTargetFeature(Args, Features, options::OPT_mmicromips, 1041 options::OPT_mno_micromips, "micromips"); 1042 AddTargetFeature(Args, Features, options::OPT_mdsp, options::OPT_mno_dsp, 1043 "dsp"); 1044 AddTargetFeature(Args, Features, options::OPT_mdspr2, options::OPT_mno_dspr2, 1045 "dspr2"); 1046 AddTargetFeature(Args, Features, options::OPT_mmsa, options::OPT_mno_msa, 1047 "msa"); 1048 AddTargetFeature(Args, Features, options::OPT_mfp64, options::OPT_mfp32, 1049 "fp64"); 1050} 1051 1052void Clang::AddMIPSTargetArgs(const ArgList &Args, 1053 ArgStringList &CmdArgs) const { 1054 const Driver &D = getToolChain().getDriver(); 1055 StringRef CPUName; 1056 StringRef ABIName; 1057 const llvm::Triple &Triple = getToolChain().getTriple(); 1058 getMipsCPUAndABI(Args, Triple, CPUName, ABIName); 1059 1060 CmdArgs.push_back("-target-abi"); 1061 CmdArgs.push_back(ABIName.data()); 1062 1063 StringRef FloatABI = getMipsFloatABI(D, Args); 1064 1065 bool IsMips16 = Args.getLastArg(options::OPT_mips16) != NULL; 1066 1067 if (FloatABI == "soft" || (FloatABI == "hard" && IsMips16)) { 1068 // Floating point operations and argument passing are soft. 1069 CmdArgs.push_back("-msoft-float"); 1070 CmdArgs.push_back("-mfloat-abi"); 1071 CmdArgs.push_back("soft"); 1072 1073 if (FloatABI == "hard" && IsMips16) { 1074 CmdArgs.push_back("-mllvm"); 1075 CmdArgs.push_back("-mips16-hard-float"); 1076 } 1077 } 1078 else { 1079 // Floating point operations and argument passing are hard. 1080 assert(FloatABI == "hard" && "Invalid float abi!"); 1081 CmdArgs.push_back("-mfloat-abi"); 1082 CmdArgs.push_back("hard"); 1083 } 1084 1085 if (Arg *A = Args.getLastArg(options::OPT_mxgot, options::OPT_mno_xgot)) { 1086 if (A->getOption().matches(options::OPT_mxgot)) { 1087 CmdArgs.push_back("-mllvm"); 1088 CmdArgs.push_back("-mxgot"); 1089 } 1090 } 1091 1092 if (Arg *A = Args.getLastArg(options::OPT_mldc1_sdc1, 1093 options::OPT_mno_ldc1_sdc1)) { 1094 if (A->getOption().matches(options::OPT_mno_ldc1_sdc1)) { 1095 CmdArgs.push_back("-mllvm"); 1096 CmdArgs.push_back("-mno-ldc1-sdc1"); 1097 } 1098 } 1099 1100 if (Arg *A = Args.getLastArg(options::OPT_mcheck_zero_division, 1101 options::OPT_mno_check_zero_division)) { 1102 if (A->getOption().matches(options::OPT_mno_check_zero_division)) { 1103 CmdArgs.push_back("-mllvm"); 1104 CmdArgs.push_back("-mno-check-zero-division"); 1105 } 1106 } 1107 1108 if (Arg *A = Args.getLastArg(options::OPT_G)) { 1109 StringRef v = A->getValue(); 1110 CmdArgs.push_back("-mllvm"); 1111 CmdArgs.push_back(Args.MakeArgString("-mips-ssection-threshold=" + v)); 1112 A->claim(); 1113 } 1114} 1115 1116/// getPPCTargetCPU - Get the (LLVM) name of the PowerPC cpu we are targeting. 1117static std::string getPPCTargetCPU(const ArgList &Args) { 1118 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) { 1119 StringRef CPUName = A->getValue(); 1120 1121 if (CPUName == "native") { 1122 std::string CPU = llvm::sys::getHostCPUName(); 1123 if (!CPU.empty() && CPU != "generic") 1124 return CPU; 1125 else 1126 return ""; 1127 } 1128 1129 return llvm::StringSwitch<const char *>(CPUName) 1130 .Case("common", "generic") 1131 .Case("440", "440") 1132 .Case("440fp", "440") 1133 .Case("450", "450") 1134 .Case("601", "601") 1135 .Case("602", "602") 1136 .Case("603", "603") 1137 .Case("603e", "603e") 1138 .Case("603ev", "603ev") 1139 .Case("604", "604") 1140 .Case("604e", "604e") 1141 .Case("620", "620") 1142 .Case("630", "pwr3") 1143 .Case("G3", "g3") 1144 .Case("7400", "7400") 1145 .Case("G4", "g4") 1146 .Case("7450", "7450") 1147 .Case("G4+", "g4+") 1148 .Case("750", "750") 1149 .Case("970", "970") 1150 .Case("G5", "g5") 1151 .Case("a2", "a2") 1152 .Case("a2q", "a2q") 1153 .Case("e500mc", "e500mc") 1154 .Case("e5500", "e5500") 1155 .Case("power3", "pwr3") 1156 .Case("power4", "pwr4") 1157 .Case("power5", "pwr5") 1158 .Case("power5x", "pwr5x") 1159 .Case("power6", "pwr6") 1160 .Case("power6x", "pwr6x") 1161 .Case("power7", "pwr7") 1162 .Case("pwr3", "pwr3") 1163 .Case("pwr4", "pwr4") 1164 .Case("pwr5", "pwr5") 1165 .Case("pwr5x", "pwr5x") 1166 .Case("pwr6", "pwr6") 1167 .Case("pwr6x", "pwr6x") 1168 .Case("pwr7", "pwr7") 1169 .Case("powerpc", "ppc") 1170 .Case("powerpc64", "ppc64") 1171 .Case("powerpc64le", "ppc64le") 1172 .Default(""); 1173 } 1174 1175 return ""; 1176} 1177 1178static void getPPCTargetFeatures(const ArgList &Args, 1179 std::vector<const char *> &Features) { 1180 for (arg_iterator it = Args.filtered_begin(options::OPT_m_ppc_Features_Group), 1181 ie = Args.filtered_end(); 1182 it != ie; ++it) { 1183 StringRef Name = (*it)->getOption().getName(); 1184 (*it)->claim(); 1185 1186 // Skip over "-m". 1187 assert(Name.startswith("m") && "Invalid feature name."); 1188 Name = Name.substr(1); 1189 1190 bool IsNegative = Name.startswith("no-"); 1191 if (IsNegative) 1192 Name = Name.substr(3); 1193 1194 // Note that gcc calls this mfcrf and LLVM calls this mfocrf so we 1195 // pass the correct option to the backend while calling the frontend 1196 // option the same. 1197 // TODO: Change the LLVM backend option maybe? 1198 if (Name == "mfcrf") 1199 Name = "mfocrf"; 1200 1201 Features.push_back(Args.MakeArgString((IsNegative ? "-" : "+") + Name)); 1202 } 1203 1204 // Altivec is a bit weird, allow overriding of the Altivec feature here. 1205 AddTargetFeature(Args, Features, options::OPT_faltivec, 1206 options::OPT_fno_altivec, "altivec"); 1207} 1208 1209/// Get the (LLVM) name of the R600 gpu we are targeting. 1210static std::string getR600TargetGPU(const ArgList &Args) { 1211 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) { 1212 const char *GPUName = A->getValue(); 1213 return llvm::StringSwitch<const char *>(GPUName) 1214 .Cases("rv630", "rv635", "r600") 1215 .Cases("rv610", "rv620", "rs780", "rs880") 1216 .Case("rv740", "rv770") 1217 .Case("palm", "cedar") 1218 .Cases("sumo", "sumo2", "sumo") 1219 .Case("hemlock", "cypress") 1220 .Case("aruba", "cayman") 1221 .Default(GPUName); 1222 } 1223 return ""; 1224} 1225 1226static void getSparcTargetFeatures(const ArgList &Args, 1227 std::vector<const char *> Features) { 1228 bool SoftFloatABI = true; 1229 if (Arg *A = 1230 Args.getLastArg(options::OPT_msoft_float, options::OPT_mhard_float)) { 1231 if (A->getOption().matches(options::OPT_mhard_float)) 1232 SoftFloatABI = false; 1233 } 1234 if (SoftFloatABI) 1235 Features.push_back("+soft-float"); 1236} 1237 1238void Clang::AddSparcTargetArgs(const ArgList &Args, 1239 ArgStringList &CmdArgs) const { 1240 const Driver &D = getToolChain().getDriver(); 1241 1242 // Select the float ABI as determined by -msoft-float, -mhard-float, and 1243 StringRef FloatABI; 1244 if (Arg *A = Args.getLastArg(options::OPT_msoft_float, 1245 options::OPT_mhard_float)) { 1246 if (A->getOption().matches(options::OPT_msoft_float)) 1247 FloatABI = "soft"; 1248 else if (A->getOption().matches(options::OPT_mhard_float)) 1249 FloatABI = "hard"; 1250 } 1251 1252 // If unspecified, choose the default based on the platform. 1253 if (FloatABI.empty()) { 1254 // Assume "soft", but warn the user we are guessing. 1255 FloatABI = "soft"; 1256 D.Diag(diag::warn_drv_assuming_mfloat_abi_is) << "soft"; 1257 } 1258 1259 if (FloatABI == "soft") { 1260 // Floating point operations and argument passing are soft. 1261 // 1262 // FIXME: This changes CPP defines, we need -target-soft-float. 1263 CmdArgs.push_back("-msoft-float"); 1264 } else { 1265 assert(FloatABI == "hard" && "Invalid float abi!"); 1266 CmdArgs.push_back("-mhard-float"); 1267 } 1268} 1269 1270static const char *getSystemZTargetCPU(const ArgList &Args) { 1271 if (const Arg *A = Args.getLastArg(options::OPT_march_EQ)) 1272 return A->getValue(); 1273 return "z10"; 1274} 1275 1276static const char *getX86TargetCPU(const ArgList &Args, 1277 const llvm::Triple &Triple) { 1278 if (const Arg *A = Args.getLastArg(options::OPT_march_EQ)) { 1279 if (StringRef(A->getValue()) != "native") { 1280 if (Triple.isOSDarwin() && Triple.getArchName() == "x86_64h") 1281 return "core-avx2"; 1282 1283 return A->getValue(); 1284 } 1285 1286 // FIXME: Reject attempts to use -march=native unless the target matches 1287 // the host. 1288 // 1289 // FIXME: We should also incorporate the detected target features for use 1290 // with -native. 1291 std::string CPU = llvm::sys::getHostCPUName(); 1292 if (!CPU.empty() && CPU != "generic") 1293 return Args.MakeArgString(CPU); 1294 } 1295 1296 // Select the default CPU if none was given (or detection failed). 1297 1298 if (Triple.getArch() != llvm::Triple::x86_64 && 1299 Triple.getArch() != llvm::Triple::x86) 1300 return 0; // This routine is only handling x86 targets. 1301 1302 bool Is64Bit = Triple.getArch() == llvm::Triple::x86_64; 1303 1304 // FIXME: Need target hooks. 1305 if (Triple.isOSDarwin()) { 1306 if (Triple.getArchName() == "x86_64h") 1307 return "core-avx2"; 1308 return Is64Bit ? "core2" : "yonah"; 1309 } 1310 1311 // All x86 devices running Android have core2 as their common 1312 // denominator. This makes a better choice than pentium4. 1313 if (Triple.getEnvironment() == llvm::Triple::Android) 1314 return "core2"; 1315 1316 // Everything else goes to x86-64 in 64-bit mode. 1317 if (Is64Bit) 1318 return "x86-64"; 1319 1320 switch (Triple.getOS()) { 1321 case llvm::Triple::FreeBSD: 1322 case llvm::Triple::NetBSD: 1323 case llvm::Triple::OpenBSD: 1324 return "i486"; 1325 case llvm::Triple::Haiku: 1326 return "i586"; 1327 case llvm::Triple::Bitrig: 1328 return "i686"; 1329 default: 1330 // Fallback to p4. 1331 return "pentium4"; 1332 } 1333} 1334 1335static std::string getCPUName(const ArgList &Args, const llvm::Triple &T) { 1336 switch(T.getArch()) { 1337 default: 1338 return ""; 1339 1340 case llvm::Triple::aarch64: 1341 return getAArch64TargetCPU(Args, T); 1342 1343 case llvm::Triple::arm: 1344 case llvm::Triple::thumb: 1345 return getARMTargetCPU(Args, T); 1346 1347 case llvm::Triple::mips: 1348 case llvm::Triple::mipsel: 1349 case llvm::Triple::mips64: 1350 case llvm::Triple::mips64el: { 1351 StringRef CPUName; 1352 StringRef ABIName; 1353 getMipsCPUAndABI(Args, T, CPUName, ABIName); 1354 return CPUName; 1355 } 1356 1357 case llvm::Triple::ppc: 1358 case llvm::Triple::ppc64: 1359 case llvm::Triple::ppc64le: { 1360 std::string TargetCPUName = getPPCTargetCPU(Args); 1361 // LLVM may default to generating code for the native CPU, 1362 // but, like gcc, we default to a more generic option for 1363 // each architecture. (except on Darwin) 1364 if (TargetCPUName.empty() && !T.isOSDarwin()) { 1365 if (T.getArch() == llvm::Triple::ppc64) 1366 TargetCPUName = "ppc64"; 1367 else if (T.getArch() == llvm::Triple::ppc64le) 1368 TargetCPUName = "ppc64le"; 1369 else 1370 TargetCPUName = "ppc"; 1371 } 1372 return TargetCPUName; 1373 } 1374 1375 case llvm::Triple::sparc: 1376 case llvm::Triple::sparcv9: 1377 if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) 1378 return A->getValue(); 1379 return ""; 1380 1381 case llvm::Triple::x86: 1382 case llvm::Triple::x86_64: 1383 return getX86TargetCPU(Args, T); 1384 1385 case llvm::Triple::hexagon: 1386 return "hexagon" + toolchains::Hexagon_TC::GetTargetCPU(Args).str(); 1387 1388 case llvm::Triple::systemz: 1389 return getSystemZTargetCPU(Args); 1390 1391 case llvm::Triple::r600: 1392 return getR600TargetGPU(Args); 1393 } 1394} 1395 1396static void getX86TargetFeatures(const llvm::Triple &Triple, 1397 const ArgList &Args, 1398 std::vector<const char *> &Features) { 1399 if (Triple.getArchName() == "x86_64h") { 1400 // x86_64h implies quite a few of the more modern subtarget features 1401 // for Haswell class CPUs, but not all of them. Opt-out of a few. 1402 Features.push_back("-rdrnd"); 1403 Features.push_back("-aes"); 1404 Features.push_back("-pclmul"); 1405 Features.push_back("-rtm"); 1406 Features.push_back("-hle"); 1407 Features.push_back("-fsgsbase"); 1408 } 1409 1410 // Now add any that the user explicitly requested on the command line, 1411 // which may override the defaults. 1412 for (arg_iterator it = Args.filtered_begin(options::OPT_m_x86_Features_Group), 1413 ie = Args.filtered_end(); 1414 it != ie; ++it) { 1415 StringRef Name = (*it)->getOption().getName(); 1416 (*it)->claim(); 1417 1418 // Skip over "-m". 1419 assert(Name.startswith("m") && "Invalid feature name."); 1420 Name = Name.substr(1); 1421 1422 bool IsNegative = Name.startswith("no-"); 1423 if (IsNegative) 1424 Name = Name.substr(3); 1425 1426 Features.push_back(Args.MakeArgString((IsNegative ? "-" : "+") + Name)); 1427 } 1428} 1429 1430void Clang::AddX86TargetArgs(const ArgList &Args, 1431 ArgStringList &CmdArgs) const { 1432 if (!Args.hasFlag(options::OPT_mred_zone, 1433 options::OPT_mno_red_zone, 1434 true) || 1435 Args.hasArg(options::OPT_mkernel) || 1436 Args.hasArg(options::OPT_fapple_kext)) 1437 CmdArgs.push_back("-disable-red-zone"); 1438 1439 // Default to avoid implicit floating-point for kernel/kext code, but allow 1440 // that to be overridden with -mno-soft-float. 1441 bool NoImplicitFloat = (Args.hasArg(options::OPT_mkernel) || 1442 Args.hasArg(options::OPT_fapple_kext)); 1443 if (Arg *A = Args.getLastArg(options::OPT_msoft_float, 1444 options::OPT_mno_soft_float, 1445 options::OPT_mimplicit_float, 1446 options::OPT_mno_implicit_float)) { 1447 const Option &O = A->getOption(); 1448 NoImplicitFloat = (O.matches(options::OPT_mno_implicit_float) || 1449 O.matches(options::OPT_msoft_float)); 1450 } 1451 if (NoImplicitFloat) 1452 CmdArgs.push_back("-no-implicit-float"); 1453} 1454 1455static inline bool HasPICArg(const ArgList &Args) { 1456 return Args.hasArg(options::OPT_fPIC) 1457 || Args.hasArg(options::OPT_fpic); 1458} 1459 1460static Arg *GetLastSmallDataThresholdArg(const ArgList &Args) { 1461 return Args.getLastArg(options::OPT_G, 1462 options::OPT_G_EQ, 1463 options::OPT_msmall_data_threshold_EQ); 1464} 1465 1466static std::string GetHexagonSmallDataThresholdValue(const ArgList &Args) { 1467 std::string value; 1468 if (HasPICArg(Args)) 1469 value = "0"; 1470 else if (Arg *A = GetLastSmallDataThresholdArg(Args)) { 1471 value = A->getValue(); 1472 A->claim(); 1473 } 1474 return value; 1475} 1476 1477void Clang::AddHexagonTargetArgs(const ArgList &Args, 1478 ArgStringList &CmdArgs) const { 1479 CmdArgs.push_back("-fno-signed-char"); 1480 CmdArgs.push_back("-mqdsp6-compat"); 1481 CmdArgs.push_back("-Wreturn-type"); 1482 1483 std::string SmallDataThreshold = GetHexagonSmallDataThresholdValue(Args); 1484 if (!SmallDataThreshold.empty()) { 1485 CmdArgs.push_back ("-mllvm"); 1486 CmdArgs.push_back(Args.MakeArgString( 1487 "-hexagon-small-data-threshold=" + SmallDataThreshold)); 1488 } 1489 1490 if (!Args.hasArg(options::OPT_fno_short_enums)) 1491 CmdArgs.push_back("-fshort-enums"); 1492 if (Args.getLastArg(options::OPT_mieee_rnd_near)) { 1493 CmdArgs.push_back ("-mllvm"); 1494 CmdArgs.push_back ("-enable-hexagon-ieee-rnd-near"); 1495 } 1496 CmdArgs.push_back ("-mllvm"); 1497 CmdArgs.push_back ("-machine-sink-split=0"); 1498} 1499 1500static void getAArch64TargetFeatures(const Driver &D, const ArgList &Args, 1501 std::vector<const char *> &Features) { 1502 // Honor -mfpu=. 1503 if (const Arg *A = Args.getLastArg(options::OPT_mfpu_EQ)) 1504 getAArch64FPUFeatures(D, A, Args, Features); 1505} 1506 1507static void getTargetFeatures(const Driver &D, const llvm::Triple &Triple, 1508 const ArgList &Args, ArgStringList &CmdArgs) { 1509 std::vector<const char *> Features; 1510 switch (Triple.getArch()) { 1511 default: 1512 break; 1513 case llvm::Triple::mips: 1514 case llvm::Triple::mipsel: 1515 case llvm::Triple::mips64: 1516 case llvm::Triple::mips64el: 1517 getMIPSTargetFeatures(D, Args, Features); 1518 break; 1519 1520 case llvm::Triple::arm: 1521 case llvm::Triple::thumb: 1522 getARMTargetFeatures(D, Triple, Args, Features); 1523 break; 1524 1525 case llvm::Triple::ppc: 1526 case llvm::Triple::ppc64: 1527 case llvm::Triple::ppc64le: 1528 getPPCTargetFeatures(Args, Features); 1529 break; 1530 case llvm::Triple::sparc: 1531 getSparcTargetFeatures(Args, Features); 1532 break; 1533 case llvm::Triple::aarch64: 1534 getAArch64TargetFeatures(D, Args, Features); 1535 break; 1536 case llvm::Triple::x86: 1537 case llvm::Triple::x86_64: 1538 getX86TargetFeatures(Triple, Args, Features); 1539 break; 1540 } 1541 1542 // Find the last of each feature. 1543 llvm::StringMap<unsigned> LastOpt; 1544 for (unsigned I = 0, N = Features.size(); I < N; ++I) { 1545 const char *Name = Features[I]; 1546 assert(Name[0] == '-' || Name[0] == '+'); 1547 LastOpt[Name + 1] = I; 1548 } 1549 1550 for (unsigned I = 0, N = Features.size(); I < N; ++I) { 1551 // If this feature was overridden, ignore it. 1552 const char *Name = Features[I]; 1553 llvm::StringMap<unsigned>::iterator LastI = LastOpt.find(Name + 1); 1554 assert(LastI != LastOpt.end()); 1555 unsigned Last = LastI->second; 1556 if (Last != I) 1557 continue; 1558 1559 CmdArgs.push_back("-target-feature"); 1560 CmdArgs.push_back(Name); 1561 } 1562} 1563 1564static bool 1565shouldUseExceptionTablesForObjCExceptions(const ObjCRuntime &runtime, 1566 const llvm::Triple &Triple) { 1567 // We use the zero-cost exception tables for Objective-C if the non-fragile 1568 // ABI is enabled or when compiling for x86_64 and ARM on Snow Leopard and 1569 // later. 1570 if (runtime.isNonFragile()) 1571 return true; 1572 1573 if (!Triple.isOSDarwin()) 1574 return false; 1575 1576 return (!Triple.isMacOSXVersionLT(10,5) && 1577 (Triple.getArch() == llvm::Triple::x86_64 || 1578 Triple.getArch() == llvm::Triple::arm)); 1579} 1580 1581/// addExceptionArgs - Adds exception related arguments to the driver command 1582/// arguments. There's a master flag, -fexceptions and also language specific 1583/// flags to enable/disable C++ and Objective-C exceptions. 1584/// This makes it possible to for example disable C++ exceptions but enable 1585/// Objective-C exceptions. 1586static void addExceptionArgs(const ArgList &Args, types::ID InputType, 1587 const llvm::Triple &Triple, 1588 bool KernelOrKext, 1589 const ObjCRuntime &objcRuntime, 1590 ArgStringList &CmdArgs) { 1591 if (KernelOrKext) { 1592 // -mkernel and -fapple-kext imply no exceptions, so claim exception related 1593 // arguments now to avoid warnings about unused arguments. 1594 Args.ClaimAllArgs(options::OPT_fexceptions); 1595 Args.ClaimAllArgs(options::OPT_fno_exceptions); 1596 Args.ClaimAllArgs(options::OPT_fobjc_exceptions); 1597 Args.ClaimAllArgs(options::OPT_fno_objc_exceptions); 1598 Args.ClaimAllArgs(options::OPT_fcxx_exceptions); 1599 Args.ClaimAllArgs(options::OPT_fno_cxx_exceptions); 1600 return; 1601 } 1602 1603 // Exceptions are enabled by default. 1604 bool ExceptionsEnabled = true; 1605 1606 // This keeps track of whether exceptions were explicitly turned on or off. 1607 bool DidHaveExplicitExceptionFlag = false; 1608 1609 if (Arg *A = Args.getLastArg(options::OPT_fexceptions, 1610 options::OPT_fno_exceptions)) { 1611 if (A->getOption().matches(options::OPT_fexceptions)) 1612 ExceptionsEnabled = true; 1613 else 1614 ExceptionsEnabled = false; 1615 1616 DidHaveExplicitExceptionFlag = true; 1617 } 1618 1619 bool ShouldUseExceptionTables = false; 1620 1621 // Exception tables and cleanups can be enabled with -fexceptions even if the 1622 // language itself doesn't support exceptions. 1623 if (ExceptionsEnabled && DidHaveExplicitExceptionFlag) 1624 ShouldUseExceptionTables = true; 1625 1626 // Obj-C exceptions are enabled by default, regardless of -fexceptions. This 1627 // is not necessarily sensible, but follows GCC. 1628 if (types::isObjC(InputType) && 1629 Args.hasFlag(options::OPT_fobjc_exceptions, 1630 options::OPT_fno_objc_exceptions, 1631 true)) { 1632 CmdArgs.push_back("-fobjc-exceptions"); 1633 1634 ShouldUseExceptionTables |= 1635 shouldUseExceptionTablesForObjCExceptions(objcRuntime, Triple); 1636 } 1637 1638 if (types::isCXX(InputType)) { 1639 bool CXXExceptionsEnabled = ExceptionsEnabled; 1640 1641 if (Arg *A = Args.getLastArg(options::OPT_fcxx_exceptions, 1642 options::OPT_fno_cxx_exceptions, 1643 options::OPT_fexceptions, 1644 options::OPT_fno_exceptions)) { 1645 if (A->getOption().matches(options::OPT_fcxx_exceptions)) 1646 CXXExceptionsEnabled = true; 1647 else if (A->getOption().matches(options::OPT_fno_cxx_exceptions)) 1648 CXXExceptionsEnabled = false; 1649 } 1650 1651 if (CXXExceptionsEnabled) { 1652 CmdArgs.push_back("-fcxx-exceptions"); 1653 1654 ShouldUseExceptionTables = true; 1655 } 1656 } 1657 1658 if (ShouldUseExceptionTables) 1659 CmdArgs.push_back("-fexceptions"); 1660} 1661 1662static bool ShouldDisableAutolink(const ArgList &Args, 1663 const ToolChain &TC) { 1664 bool Default = true; 1665 if (TC.getTriple().isOSDarwin()) { 1666 // The native darwin assembler doesn't support the linker_option directives, 1667 // so we disable them if we think the .s file will be passed to it. 1668 Default = TC.useIntegratedAs(); 1669 } 1670 return !Args.hasFlag(options::OPT_fautolink, options::OPT_fno_autolink, 1671 Default); 1672} 1673 1674static bool ShouldDisableCFI(const ArgList &Args, 1675 const ToolChain &TC) { 1676 bool Default = true; 1677 if (TC.getTriple().isOSDarwin()) { 1678 // The native darwin assembler doesn't support cfi directives, so 1679 // we disable them if we think the .s file will be passed to it. 1680 Default = TC.useIntegratedAs(); 1681 } 1682 return !Args.hasFlag(options::OPT_fdwarf2_cfi_asm, 1683 options::OPT_fno_dwarf2_cfi_asm, 1684 Default); 1685} 1686 1687static bool ShouldDisableDwarfDirectory(const ArgList &Args, 1688 const ToolChain &TC) { 1689 bool UseDwarfDirectory = Args.hasFlag(options::OPT_fdwarf_directory_asm, 1690 options::OPT_fno_dwarf_directory_asm, 1691 TC.useIntegratedAs()); 1692 return !UseDwarfDirectory; 1693} 1694 1695/// \brief Check whether the given input tree contains any compilation actions. 1696static bool ContainsCompileAction(const Action *A) { 1697 if (isa<CompileJobAction>(A)) 1698 return true; 1699 1700 for (Action::const_iterator it = A->begin(), ie = A->end(); it != ie; ++it) 1701 if (ContainsCompileAction(*it)) 1702 return true; 1703 1704 return false; 1705} 1706 1707/// \brief Check if -relax-all should be passed to the internal assembler. 1708/// This is done by default when compiling non-assembler source with -O0. 1709static bool UseRelaxAll(Compilation &C, const ArgList &Args) { 1710 bool RelaxDefault = true; 1711 1712 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) 1713 RelaxDefault = A->getOption().matches(options::OPT_O0); 1714 1715 if (RelaxDefault) { 1716 RelaxDefault = false; 1717 for (ActionList::const_iterator it = C.getActions().begin(), 1718 ie = C.getActions().end(); it != ie; ++it) { 1719 if (ContainsCompileAction(*it)) { 1720 RelaxDefault = true; 1721 break; 1722 } 1723 } 1724 } 1725 1726 return Args.hasFlag(options::OPT_mrelax_all, options::OPT_mno_relax_all, 1727 RelaxDefault); 1728} 1729 1730static void CollectArgsForIntegratedAssembler(Compilation &C, 1731 const ArgList &Args, 1732 ArgStringList &CmdArgs, 1733 const Driver &D) { 1734 if (UseRelaxAll(C, Args)) 1735 CmdArgs.push_back("-mrelax-all"); 1736 1737 // When passing -I arguments to the assembler we sometimes need to 1738 // unconditionally take the next argument. For example, when parsing 1739 // '-Wa,-I -Wa,foo' we need to accept the -Wa,foo arg after seeing the 1740 // -Wa,-I arg and when parsing '-Wa,-I,foo' we need to accept the 'foo' 1741 // arg after parsing the '-I' arg. 1742 bool TakeNextArg = false; 1743 1744 // When using an integrated assembler, translate -Wa, and -Xassembler 1745 // options. 1746 for (arg_iterator it = Args.filtered_begin(options::OPT_Wa_COMMA, 1747 options::OPT_Xassembler), 1748 ie = Args.filtered_end(); it != ie; ++it) { 1749 const Arg *A = *it; 1750 A->claim(); 1751 1752 for (unsigned i = 0, e = A->getNumValues(); i != e; ++i) { 1753 StringRef Value = A->getValue(i); 1754 if (TakeNextArg) { 1755 CmdArgs.push_back(Value.data()); 1756 TakeNextArg = false; 1757 continue; 1758 } 1759 1760 if (Value == "-force_cpusubtype_ALL") { 1761 // Do nothing, this is the default and we don't support anything else. 1762 } else if (Value == "-L") { 1763 CmdArgs.push_back("-msave-temp-labels"); 1764 } else if (Value == "--fatal-warnings") { 1765 CmdArgs.push_back("-mllvm"); 1766 CmdArgs.push_back("-fatal-assembler-warnings"); 1767 } else if (Value == "--noexecstack") { 1768 CmdArgs.push_back("-mnoexecstack"); 1769 } else if (Value.startswith("-I")) { 1770 CmdArgs.push_back(Value.data()); 1771 // We need to consume the next argument if the current arg is a plain 1772 // -I. The next arg will be the include directory. 1773 if (Value == "-I") 1774 TakeNextArg = true; 1775 } else { 1776 D.Diag(diag::err_drv_unsupported_option_argument) 1777 << A->getOption().getName() << Value; 1778 } 1779 } 1780 } 1781} 1782 1783static void addProfileRTLinux( 1784 const ToolChain &TC, const ArgList &Args, ArgStringList &CmdArgs) { 1785 if (!(Args.hasArg(options::OPT_fprofile_arcs) || 1786 Args.hasArg(options::OPT_fprofile_generate) || 1787 Args.hasArg(options::OPT_fcreate_profile) || 1788 Args.hasArg(options::OPT_coverage))) 1789 return; 1790 1791 // The profile runtime is located in the Linux library directory and has name 1792 // "libclang_rt.profile-<ArchName>.a". 1793 SmallString<128> LibProfile(TC.getDriver().ResourceDir); 1794 llvm::sys::path::append( 1795 LibProfile, "lib", "linux", 1796 Twine("libclang_rt.profile-") + TC.getArchName() + ".a"); 1797 1798 CmdArgs.push_back(Args.MakeArgString(LibProfile)); 1799} 1800 1801static void addSanitizerRTLinkFlagsLinux( 1802 const ToolChain &TC, const ArgList &Args, ArgStringList &CmdArgs, 1803 const StringRef Sanitizer, bool BeforeLibStdCXX, 1804 bool ExportSymbols = true) { 1805 // Sanitizer runtime is located in the Linux library directory and 1806 // has name "libclang_rt.<Sanitizer>-<ArchName>.a". 1807 SmallString<128> LibSanitizer(TC.getDriver().ResourceDir); 1808 llvm::sys::path::append( 1809 LibSanitizer, "lib", "linux", 1810 (Twine("libclang_rt.") + Sanitizer + "-" + TC.getArchName() + ".a")); 1811 1812 // Sanitizer runtime may need to come before -lstdc++ (or -lc++, libstdc++.a, 1813 // etc.) so that the linker picks custom versions of the global 'operator 1814 // new' and 'operator delete' symbols. We take the extreme (but simple) 1815 // strategy of inserting it at the front of the link command. It also 1816 // needs to be forced to end up in the executable, so wrap it in 1817 // whole-archive. 1818 SmallVector<const char *, 3> LibSanitizerArgs; 1819 LibSanitizerArgs.push_back("-whole-archive"); 1820 LibSanitizerArgs.push_back(Args.MakeArgString(LibSanitizer)); 1821 LibSanitizerArgs.push_back("-no-whole-archive"); 1822 1823 CmdArgs.insert(BeforeLibStdCXX ? CmdArgs.begin() : CmdArgs.end(), 1824 LibSanitizerArgs.begin(), LibSanitizerArgs.end()); 1825 1826 CmdArgs.push_back("-lpthread"); 1827 CmdArgs.push_back("-lrt"); 1828 CmdArgs.push_back("-ldl"); 1829 CmdArgs.push_back("-lm"); 1830 1831 // If possible, use a dynamic symbols file to export the symbols from the 1832 // runtime library. If we can't do so, use -export-dynamic instead to export 1833 // all symbols from the binary. 1834 if (ExportSymbols) { 1835 if (llvm::sys::fs::exists(LibSanitizer + ".syms")) 1836 CmdArgs.push_back( 1837 Args.MakeArgString("--dynamic-list=" + LibSanitizer + ".syms")); 1838 else 1839 CmdArgs.push_back("-export-dynamic"); 1840 } 1841} 1842 1843/// If AddressSanitizer is enabled, add appropriate linker flags (Linux). 1844/// This needs to be called before we add the C run-time (malloc, etc). 1845static void addAsanRTLinux(const ToolChain &TC, const ArgList &Args, 1846 ArgStringList &CmdArgs) { 1847 if (TC.getTriple().getEnvironment() == llvm::Triple::Android) { 1848 SmallString<128> LibAsan(TC.getDriver().ResourceDir); 1849 llvm::sys::path::append(LibAsan, "lib", "linux", 1850 (Twine("libclang_rt.asan-") + 1851 TC.getArchName() + "-android.so")); 1852 CmdArgs.insert(CmdArgs.begin(), Args.MakeArgString(LibAsan)); 1853 } else { 1854 if (!Args.hasArg(options::OPT_shared)) 1855 addSanitizerRTLinkFlagsLinux(TC, Args, CmdArgs, "asan", true); 1856 } 1857} 1858 1859/// If ThreadSanitizer is enabled, add appropriate linker flags (Linux). 1860/// This needs to be called before we add the C run-time (malloc, etc). 1861static void addTsanRTLinux(const ToolChain &TC, const ArgList &Args, 1862 ArgStringList &CmdArgs) { 1863 if (!Args.hasArg(options::OPT_shared)) 1864 addSanitizerRTLinkFlagsLinux(TC, Args, CmdArgs, "tsan", true); 1865} 1866 1867/// If MemorySanitizer is enabled, add appropriate linker flags (Linux). 1868/// This needs to be called before we add the C run-time (malloc, etc). 1869static void addMsanRTLinux(const ToolChain &TC, const ArgList &Args, 1870 ArgStringList &CmdArgs) { 1871 if (!Args.hasArg(options::OPT_shared)) 1872 addSanitizerRTLinkFlagsLinux(TC, Args, CmdArgs, "msan", true); 1873} 1874 1875/// If LeakSanitizer is enabled, add appropriate linker flags (Linux). 1876/// This needs to be called before we add the C run-time (malloc, etc). 1877static void addLsanRTLinux(const ToolChain &TC, const ArgList &Args, 1878 ArgStringList &CmdArgs) { 1879 if (!Args.hasArg(options::OPT_shared)) 1880 addSanitizerRTLinkFlagsLinux(TC, Args, CmdArgs, "lsan", true); 1881} 1882 1883/// If UndefinedBehaviorSanitizer is enabled, add appropriate linker flags 1884/// (Linux). 1885static void addUbsanRTLinux(const ToolChain &TC, const ArgList &Args, 1886 ArgStringList &CmdArgs, bool IsCXX, 1887 bool HasOtherSanitizerRt) { 1888 // Need a copy of sanitizer_common. This could come from another sanitizer 1889 // runtime; if we're not including one, include our own copy. 1890 if (!HasOtherSanitizerRt) 1891 addSanitizerRTLinkFlagsLinux(TC, Args, CmdArgs, "san", true, false); 1892 1893 addSanitizerRTLinkFlagsLinux(TC, Args, CmdArgs, "ubsan", false); 1894 1895 // Only include the bits of the runtime which need a C++ ABI library if 1896 // we're linking in C++ mode. 1897 if (IsCXX) 1898 addSanitizerRTLinkFlagsLinux(TC, Args, CmdArgs, "ubsan_cxx", false); 1899} 1900 1901static void addDfsanRTLinux(const ToolChain &TC, const ArgList &Args, 1902 ArgStringList &CmdArgs) { 1903 if (!Args.hasArg(options::OPT_shared)) 1904 addSanitizerRTLinkFlagsLinux(TC, Args, CmdArgs, "dfsan", true); 1905} 1906 1907static bool shouldUseFramePointerForTarget(const ArgList &Args, 1908 const llvm::Triple &Triple) { 1909 switch (Triple.getArch()) { 1910 // Don't use a frame pointer on linux if optimizing for certain targets. 1911 case llvm::Triple::mips64: 1912 case llvm::Triple::mips64el: 1913 case llvm::Triple::mips: 1914 case llvm::Triple::mipsel: 1915 case llvm::Triple::systemz: 1916 case llvm::Triple::x86: 1917 case llvm::Triple::x86_64: 1918 if (Triple.isOSLinux()) 1919 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) 1920 if (!A->getOption().matches(options::OPT_O0)) 1921 return false; 1922 return true; 1923 case llvm::Triple::xcore: 1924 return false; 1925 default: 1926 return true; 1927 } 1928} 1929 1930static bool shouldUseFramePointer(const ArgList &Args, 1931 const llvm::Triple &Triple) { 1932 if (Arg *A = Args.getLastArg(options::OPT_fno_omit_frame_pointer, 1933 options::OPT_fomit_frame_pointer)) 1934 return A->getOption().matches(options::OPT_fno_omit_frame_pointer); 1935 1936 return shouldUseFramePointerForTarget(Args, Triple); 1937} 1938 1939static bool shouldUseLeafFramePointer(const ArgList &Args, 1940 const llvm::Triple &Triple) { 1941 if (Arg *A = Args.getLastArg(options::OPT_mno_omit_leaf_frame_pointer, 1942 options::OPT_momit_leaf_frame_pointer)) 1943 return A->getOption().matches(options::OPT_mno_omit_leaf_frame_pointer); 1944 1945 return shouldUseFramePointerForTarget(Args, Triple); 1946} 1947 1948/// Add a CC1 option to specify the debug compilation directory. 1949static void addDebugCompDirArg(const ArgList &Args, ArgStringList &CmdArgs) { 1950 SmallString<128> cwd; 1951 if (!llvm::sys::fs::current_path(cwd)) { 1952 CmdArgs.push_back("-fdebug-compilation-dir"); 1953 CmdArgs.push_back(Args.MakeArgString(cwd)); 1954 } 1955} 1956 1957static const char *SplitDebugName(const ArgList &Args, 1958 const InputInfoList &Inputs) { 1959 Arg *FinalOutput = Args.getLastArg(options::OPT_o); 1960 if (FinalOutput && Args.hasArg(options::OPT_c)) { 1961 SmallString<128> T(FinalOutput->getValue()); 1962 llvm::sys::path::replace_extension(T, "dwo"); 1963 return Args.MakeArgString(T); 1964 } else { 1965 // Use the compilation dir. 1966 SmallString<128> T(Args.getLastArgValue(options::OPT_fdebug_compilation_dir)); 1967 SmallString<128> F(llvm::sys::path::stem(Inputs[0].getBaseInput())); 1968 llvm::sys::path::replace_extension(F, "dwo"); 1969 T += F; 1970 return Args.MakeArgString(F); 1971 } 1972} 1973 1974static void SplitDebugInfo(const ToolChain &TC, Compilation &C, 1975 const Tool &T, const JobAction &JA, 1976 const ArgList &Args, const InputInfo &Output, 1977 const char *OutFile) { 1978 ArgStringList ExtractArgs; 1979 ExtractArgs.push_back("--extract-dwo"); 1980 1981 ArgStringList StripArgs; 1982 StripArgs.push_back("--strip-dwo"); 1983 1984 // Grabbing the output of the earlier compile step. 1985 StripArgs.push_back(Output.getFilename()); 1986 ExtractArgs.push_back(Output.getFilename()); 1987 ExtractArgs.push_back(OutFile); 1988 1989 const char *Exec = 1990 Args.MakeArgString(TC.GetProgramPath("objcopy")); 1991 1992 // First extract the dwo sections. 1993 C.addCommand(new Command(JA, T, Exec, ExtractArgs)); 1994 1995 // Then remove them from the original .o file. 1996 C.addCommand(new Command(JA, T, Exec, StripArgs)); 1997} 1998 1999static bool isOptimizationLevelFast(const ArgList &Args) { 2000 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) 2001 if (A->getOption().matches(options::OPT_Ofast)) 2002 return true; 2003 return false; 2004} 2005 2006/// \brief Vectorize at all optimization levels greater than 1 except for -Oz. 2007static bool shouldEnableVectorizerAtOLevel(const ArgList &Args) { 2008 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 2009 if (A->getOption().matches(options::OPT_O4) || 2010 A->getOption().matches(options::OPT_Ofast)) 2011 return true; 2012 2013 if (A->getOption().matches(options::OPT_O0)) 2014 return false; 2015 2016 assert(A->getOption().matches(options::OPT_O) && "Must have a -O flag"); 2017 2018 // Vectorize -Os. 2019 StringRef S(A->getValue()); 2020 if (S == "s") 2021 return true; 2022 2023 // Don't vectorize -Oz. 2024 if (S == "z") 2025 return false; 2026 2027 unsigned OptLevel = 0; 2028 if (S.getAsInteger(10, OptLevel)) 2029 return false; 2030 2031 return OptLevel > 1; 2032 } 2033 2034 return false; 2035} 2036 2037void Clang::ConstructJob(Compilation &C, const JobAction &JA, 2038 const InputInfo &Output, 2039 const InputInfoList &Inputs, 2040 const ArgList &Args, 2041 const char *LinkingOutput) const { 2042 bool KernelOrKext = Args.hasArg(options::OPT_mkernel, 2043 options::OPT_fapple_kext); 2044 const Driver &D = getToolChain().getDriver(); 2045 ArgStringList CmdArgs; 2046 2047 assert(Inputs.size() == 1 && "Unable to handle multiple inputs."); 2048 2049 // Invoke ourselves in -cc1 mode. 2050 // 2051 // FIXME: Implement custom jobs for internal actions. 2052 CmdArgs.push_back("-cc1"); 2053 2054 // Add the "effective" target triple. 2055 CmdArgs.push_back("-triple"); 2056 std::string TripleStr = getToolChain().ComputeEffectiveClangTriple(Args); 2057 CmdArgs.push_back(Args.MakeArgString(TripleStr)); 2058 2059 // Select the appropriate action. 2060 RewriteKind rewriteKind = RK_None; 2061 2062 if (isa<AnalyzeJobAction>(JA)) { 2063 assert(JA.getType() == types::TY_Plist && "Invalid output type."); 2064 CmdArgs.push_back("-analyze"); 2065 } else if (isa<MigrateJobAction>(JA)) { 2066 CmdArgs.push_back("-migrate"); 2067 } else if (isa<PreprocessJobAction>(JA)) { 2068 if (Output.getType() == types::TY_Dependencies) 2069 CmdArgs.push_back("-Eonly"); 2070 else { 2071 CmdArgs.push_back("-E"); 2072 if (Args.hasArg(options::OPT_rewrite_objc) && 2073 !Args.hasArg(options::OPT_g_Group)) 2074 CmdArgs.push_back("-P"); 2075 } 2076 } else if (isa<AssembleJobAction>(JA)) { 2077 CmdArgs.push_back("-emit-obj"); 2078 2079 CollectArgsForIntegratedAssembler(C, Args, CmdArgs, D); 2080 2081 // Also ignore explicit -force_cpusubtype_ALL option. 2082 (void) Args.hasArg(options::OPT_force__cpusubtype__ALL); 2083 } else if (isa<PrecompileJobAction>(JA)) { 2084 // Use PCH if the user requested it. 2085 bool UsePCH = D.CCCUsePCH; 2086 2087 if (JA.getType() == types::TY_Nothing) 2088 CmdArgs.push_back("-fsyntax-only"); 2089 else if (UsePCH) 2090 CmdArgs.push_back("-emit-pch"); 2091 else 2092 CmdArgs.push_back("-emit-pth"); 2093 } else { 2094 assert(isa<CompileJobAction>(JA) && "Invalid action for clang tool."); 2095 2096 if (JA.getType() == types::TY_Nothing) { 2097 CmdArgs.push_back("-fsyntax-only"); 2098 } else if (JA.getType() == types::TY_LLVM_IR || 2099 JA.getType() == types::TY_LTO_IR) { 2100 CmdArgs.push_back("-emit-llvm"); 2101 } else if (JA.getType() == types::TY_LLVM_BC || 2102 JA.getType() == types::TY_LTO_BC) { 2103 CmdArgs.push_back("-emit-llvm-bc"); 2104 } else if (JA.getType() == types::TY_PP_Asm) { 2105 CmdArgs.push_back("-S"); 2106 } else if (JA.getType() == types::TY_AST) { 2107 CmdArgs.push_back("-emit-pch"); 2108 } else if (JA.getType() == types::TY_ModuleFile) { 2109 CmdArgs.push_back("-module-file-info"); 2110 } else if (JA.getType() == types::TY_RewrittenObjC) { 2111 CmdArgs.push_back("-rewrite-objc"); 2112 rewriteKind = RK_NonFragile; 2113 } else if (JA.getType() == types::TY_RewrittenLegacyObjC) { 2114 CmdArgs.push_back("-rewrite-objc"); 2115 rewriteKind = RK_Fragile; 2116 } else { 2117 assert(JA.getType() == types::TY_PP_Asm && 2118 "Unexpected output type!"); 2119 } 2120 } 2121 2122 // The make clang go fast button. 2123 CmdArgs.push_back("-disable-free"); 2124 2125 // Disable the verification pass in -asserts builds. 2126#ifdef NDEBUG 2127 CmdArgs.push_back("-disable-llvm-verifier"); 2128#endif 2129 2130 // Set the main file name, so that debug info works even with 2131 // -save-temps. 2132 CmdArgs.push_back("-main-file-name"); 2133 CmdArgs.push_back(getBaseInputName(Args, Inputs)); 2134 2135 // Some flags which affect the language (via preprocessor 2136 // defines). 2137 if (Args.hasArg(options::OPT_static)) 2138 CmdArgs.push_back("-static-define"); 2139 2140 if (isa<AnalyzeJobAction>(JA)) { 2141 // Enable region store model by default. 2142 CmdArgs.push_back("-analyzer-store=region"); 2143 2144 // Treat blocks as analysis entry points. 2145 CmdArgs.push_back("-analyzer-opt-analyze-nested-blocks"); 2146 2147 CmdArgs.push_back("-analyzer-eagerly-assume"); 2148 2149 // Add default argument set. 2150 if (!Args.hasArg(options::OPT__analyzer_no_default_checks)) { 2151 CmdArgs.push_back("-analyzer-checker=core"); 2152 2153 if (getToolChain().getTriple().getOS() != llvm::Triple::Win32) 2154 CmdArgs.push_back("-analyzer-checker=unix"); 2155 2156 if (getToolChain().getTriple().getVendor() == llvm::Triple::Apple) 2157 CmdArgs.push_back("-analyzer-checker=osx"); 2158 2159 CmdArgs.push_back("-analyzer-checker=deadcode"); 2160 2161 if (types::isCXX(Inputs[0].getType())) 2162 CmdArgs.push_back("-analyzer-checker=cplusplus"); 2163 2164 // Enable the following experimental checkers for testing. 2165 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.UncheckedReturn"); 2166 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.getpw"); 2167 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.gets"); 2168 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mktemp"); 2169 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mkstemp"); 2170 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.vfork"); 2171 } 2172 2173 // Set the output format. The default is plist, for (lame) historical 2174 // reasons. 2175 CmdArgs.push_back("-analyzer-output"); 2176 if (Arg *A = Args.getLastArg(options::OPT__analyzer_output)) 2177 CmdArgs.push_back(A->getValue()); 2178 else 2179 CmdArgs.push_back("plist"); 2180 2181 // Disable the presentation of standard compiler warnings when 2182 // using --analyze. We only want to show static analyzer diagnostics 2183 // or frontend errors. 2184 CmdArgs.push_back("-w"); 2185 2186 // Add -Xanalyzer arguments when running as analyzer. 2187 Args.AddAllArgValues(CmdArgs, options::OPT_Xanalyzer); 2188 } 2189 2190 CheckCodeGenerationOptions(D, Args); 2191 2192 bool PIE = getToolChain().isPIEDefault(); 2193 bool PIC = PIE || getToolChain().isPICDefault(); 2194 bool IsPICLevelTwo = PIC; 2195 2196 // For the PIC and PIE flag options, this logic is different from the 2197 // legacy logic in very old versions of GCC, as that logic was just 2198 // a bug no one had ever fixed. This logic is both more rational and 2199 // consistent with GCC's new logic now that the bugs are fixed. The last 2200 // argument relating to either PIC or PIE wins, and no other argument is 2201 // used. If the last argument is any flavor of the '-fno-...' arguments, 2202 // both PIC and PIE are disabled. Any PIE option implicitly enables PIC 2203 // at the same level. 2204 Arg *LastPICArg =Args.getLastArg(options::OPT_fPIC, options::OPT_fno_PIC, 2205 options::OPT_fpic, options::OPT_fno_pic, 2206 options::OPT_fPIE, options::OPT_fno_PIE, 2207 options::OPT_fpie, options::OPT_fno_pie); 2208 // Check whether the tool chain trumps the PIC-ness decision. If the PIC-ness 2209 // is forced, then neither PIC nor PIE flags will have no effect. 2210 if (!getToolChain().isPICDefaultForced()) { 2211 if (LastPICArg) { 2212 Option O = LastPICArg->getOption(); 2213 if (O.matches(options::OPT_fPIC) || O.matches(options::OPT_fpic) || 2214 O.matches(options::OPT_fPIE) || O.matches(options::OPT_fpie)) { 2215 PIE = O.matches(options::OPT_fPIE) || O.matches(options::OPT_fpie); 2216 PIC = PIE || O.matches(options::OPT_fPIC) || 2217 O.matches(options::OPT_fpic); 2218 IsPICLevelTwo = O.matches(options::OPT_fPIE) || 2219 O.matches(options::OPT_fPIC); 2220 } else { 2221 PIE = PIC = false; 2222 } 2223 } 2224 } 2225 2226 // Introduce a Darwin-specific hack. If the default is PIC but the flags 2227 // specified while enabling PIC enabled level 1 PIC, just force it back to 2228 // level 2 PIC instead. This matches the behavior of Darwin GCC (based on my 2229 // informal testing). 2230 if (PIC && getToolChain().getTriple().isOSDarwin()) 2231 IsPICLevelTwo |= getToolChain().isPICDefault(); 2232 2233 // Note that these flags are trump-cards. Regardless of the order w.r.t. the 2234 // PIC or PIE options above, if these show up, PIC is disabled. 2235 llvm::Triple Triple(TripleStr); 2236 if (KernelOrKext && 2237 (!Triple.isiOS() || Triple.isOSVersionLT(6))) 2238 PIC = PIE = false; 2239 if (Args.hasArg(options::OPT_static)) 2240 PIC = PIE = false; 2241 2242 if (Arg *A = Args.getLastArg(options::OPT_mdynamic_no_pic)) { 2243 // This is a very special mode. It trumps the other modes, almost no one 2244 // uses it, and it isn't even valid on any OS but Darwin. 2245 if (!getToolChain().getTriple().isOSDarwin()) 2246 D.Diag(diag::err_drv_unsupported_opt_for_target) 2247 << A->getSpelling() << getToolChain().getTriple().str(); 2248 2249 // FIXME: Warn when this flag trumps some other PIC or PIE flag. 2250 2251 CmdArgs.push_back("-mrelocation-model"); 2252 CmdArgs.push_back("dynamic-no-pic"); 2253 2254 // Only a forced PIC mode can cause the actual compile to have PIC defines 2255 // etc., no flags are sufficient. This behavior was selected to closely 2256 // match that of llvm-gcc and Apple GCC before that. 2257 if (getToolChain().isPICDefault() && getToolChain().isPICDefaultForced()) { 2258 CmdArgs.push_back("-pic-level"); 2259 CmdArgs.push_back("2"); 2260 } 2261 } else { 2262 // Currently, LLVM only knows about PIC vs. static; the PIE differences are 2263 // handled in Clang's IRGen by the -pie-level flag. 2264 CmdArgs.push_back("-mrelocation-model"); 2265 CmdArgs.push_back(PIC ? "pic" : "static"); 2266 2267 if (PIC) { 2268 CmdArgs.push_back("-pic-level"); 2269 CmdArgs.push_back(IsPICLevelTwo ? "2" : "1"); 2270 if (PIE) { 2271 CmdArgs.push_back("-pie-level"); 2272 CmdArgs.push_back(IsPICLevelTwo ? "2" : "1"); 2273 } 2274 } 2275 } 2276 2277 if (!Args.hasFlag(options::OPT_fmerge_all_constants, 2278 options::OPT_fno_merge_all_constants)) 2279 CmdArgs.push_back("-fno-merge-all-constants"); 2280 2281 // LLVM Code Generator Options. 2282 2283 if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) { 2284 CmdArgs.push_back("-mregparm"); 2285 CmdArgs.push_back(A->getValue()); 2286 } 2287 2288 if (Arg *A = Args.getLastArg(options::OPT_fpcc_struct_return, 2289 options::OPT_freg_struct_return)) { 2290 if (getToolChain().getArch() != llvm::Triple::x86) { 2291 D.Diag(diag::err_drv_unsupported_opt_for_target) 2292 << A->getSpelling() << getToolChain().getTriple().str(); 2293 } else if (A->getOption().matches(options::OPT_fpcc_struct_return)) { 2294 CmdArgs.push_back("-fpcc-struct-return"); 2295 } else { 2296 assert(A->getOption().matches(options::OPT_freg_struct_return)); 2297 CmdArgs.push_back("-freg-struct-return"); 2298 } 2299 } 2300 2301 if (Args.hasFlag(options::OPT_mrtd, options::OPT_mno_rtd, false)) 2302 CmdArgs.push_back("-mrtd"); 2303 2304 if (shouldUseFramePointer(Args, getToolChain().getTriple())) 2305 CmdArgs.push_back("-mdisable-fp-elim"); 2306 if (!Args.hasFlag(options::OPT_fzero_initialized_in_bss, 2307 options::OPT_fno_zero_initialized_in_bss)) 2308 CmdArgs.push_back("-mno-zero-initialized-in-bss"); 2309 2310 bool OFastEnabled = isOptimizationLevelFast(Args); 2311 // If -Ofast is the optimization level, then -fstrict-aliasing should be 2312 // enabled. This alias option is being used to simplify the hasFlag logic. 2313 OptSpecifier StrictAliasingAliasOption = OFastEnabled ? options::OPT_Ofast : 2314 options::OPT_fstrict_aliasing; 2315 if (!Args.hasFlag(options::OPT_fstrict_aliasing, StrictAliasingAliasOption, 2316 options::OPT_fno_strict_aliasing, true)) 2317 CmdArgs.push_back("-relaxed-aliasing"); 2318 if (!Args.hasFlag(options::OPT_fstruct_path_tbaa, 2319 options::OPT_fno_struct_path_tbaa)) 2320 CmdArgs.push_back("-no-struct-path-tbaa"); 2321 if (Args.hasFlag(options::OPT_fstrict_enums, options::OPT_fno_strict_enums, 2322 false)) 2323 CmdArgs.push_back("-fstrict-enums"); 2324 if (!Args.hasFlag(options::OPT_foptimize_sibling_calls, 2325 options::OPT_fno_optimize_sibling_calls)) 2326 CmdArgs.push_back("-mdisable-tail-calls"); 2327 2328 // Handle segmented stacks. 2329 if (Args.hasArg(options::OPT_fsplit_stack)) 2330 CmdArgs.push_back("-split-stacks"); 2331 2332 // If -Ofast is the optimization level, then -ffast-math should be enabled. 2333 // This alias option is being used to simplify the getLastArg logic. 2334 OptSpecifier FastMathAliasOption = OFastEnabled ? options::OPT_Ofast : 2335 options::OPT_ffast_math; 2336 2337 // Handle various floating point optimization flags, mapping them to the 2338 // appropriate LLVM code generation flags. The pattern for all of these is to 2339 // default off the codegen optimizations, and if any flag enables them and no 2340 // flag disables them after the flag enabling them, enable the codegen 2341 // optimization. This is complicated by several "umbrella" flags. 2342 if (Arg *A = Args.getLastArg(options::OPT_ffast_math, FastMathAliasOption, 2343 options::OPT_fno_fast_math, 2344 options::OPT_ffinite_math_only, 2345 options::OPT_fno_finite_math_only, 2346 options::OPT_fhonor_infinities, 2347 options::OPT_fno_honor_infinities)) 2348 if (A->getOption().getID() != options::OPT_fno_fast_math && 2349 A->getOption().getID() != options::OPT_fno_finite_math_only && 2350 A->getOption().getID() != options::OPT_fhonor_infinities) 2351 CmdArgs.push_back("-menable-no-infs"); 2352 if (Arg *A = Args.getLastArg(options::OPT_ffast_math, FastMathAliasOption, 2353 options::OPT_fno_fast_math, 2354 options::OPT_ffinite_math_only, 2355 options::OPT_fno_finite_math_only, 2356 options::OPT_fhonor_nans, 2357 options::OPT_fno_honor_nans)) 2358 if (A->getOption().getID() != options::OPT_fno_fast_math && 2359 A->getOption().getID() != options::OPT_fno_finite_math_only && 2360 A->getOption().getID() != options::OPT_fhonor_nans) 2361 CmdArgs.push_back("-menable-no-nans"); 2362 2363 // -fmath-errno is the default on some platforms, e.g. BSD-derived OSes. 2364 bool MathErrno = getToolChain().IsMathErrnoDefault(); 2365 if (Arg *A = Args.getLastArg(options::OPT_ffast_math, FastMathAliasOption, 2366 options::OPT_fno_fast_math, 2367 options::OPT_fmath_errno, 2368 options::OPT_fno_math_errno)) { 2369 // Turning on -ffast_math (with either flag) removes the need for MathErrno. 2370 // However, turning *off* -ffast_math merely restores the toolchain default 2371 // (which may be false). 2372 if (A->getOption().getID() == options::OPT_fno_math_errno || 2373 A->getOption().getID() == options::OPT_ffast_math || 2374 A->getOption().getID() == options::OPT_Ofast) 2375 MathErrno = false; 2376 else if (A->getOption().getID() == options::OPT_fmath_errno) 2377 MathErrno = true; 2378 } 2379 if (MathErrno) 2380 CmdArgs.push_back("-fmath-errno"); 2381 2382 // There are several flags which require disabling very specific 2383 // optimizations. Any of these being disabled forces us to turn off the 2384 // entire set of LLVM optimizations, so collect them through all the flag 2385 // madness. 2386 bool AssociativeMath = false; 2387 if (Arg *A = Args.getLastArg(options::OPT_ffast_math, FastMathAliasOption, 2388 options::OPT_fno_fast_math, 2389 options::OPT_funsafe_math_optimizations, 2390 options::OPT_fno_unsafe_math_optimizations, 2391 options::OPT_fassociative_math, 2392 options::OPT_fno_associative_math)) 2393 if (A->getOption().getID() != options::OPT_fno_fast_math && 2394 A->getOption().getID() != options::OPT_fno_unsafe_math_optimizations && 2395 A->getOption().getID() != options::OPT_fno_associative_math) 2396 AssociativeMath = true; 2397 bool ReciprocalMath = false; 2398 if (Arg *A = Args.getLastArg(options::OPT_ffast_math, FastMathAliasOption, 2399 options::OPT_fno_fast_math, 2400 options::OPT_funsafe_math_optimizations, 2401 options::OPT_fno_unsafe_math_optimizations, 2402 options::OPT_freciprocal_math, 2403 options::OPT_fno_reciprocal_math)) 2404 if (A->getOption().getID() != options::OPT_fno_fast_math && 2405 A->getOption().getID() != options::OPT_fno_unsafe_math_optimizations && 2406 A->getOption().getID() != options::OPT_fno_reciprocal_math) 2407 ReciprocalMath = true; 2408 bool SignedZeros = true; 2409 if (Arg *A = Args.getLastArg(options::OPT_ffast_math, FastMathAliasOption, 2410 options::OPT_fno_fast_math, 2411 options::OPT_funsafe_math_optimizations, 2412 options::OPT_fno_unsafe_math_optimizations, 2413 options::OPT_fsigned_zeros, 2414 options::OPT_fno_signed_zeros)) 2415 if (A->getOption().getID() != options::OPT_fno_fast_math && 2416 A->getOption().getID() != options::OPT_fno_unsafe_math_optimizations && 2417 A->getOption().getID() != options::OPT_fsigned_zeros) 2418 SignedZeros = false; 2419 bool TrappingMath = true; 2420 if (Arg *A = Args.getLastArg(options::OPT_ffast_math, FastMathAliasOption, 2421 options::OPT_fno_fast_math, 2422 options::OPT_funsafe_math_optimizations, 2423 options::OPT_fno_unsafe_math_optimizations, 2424 options::OPT_ftrapping_math, 2425 options::OPT_fno_trapping_math)) 2426 if (A->getOption().getID() != options::OPT_fno_fast_math && 2427 A->getOption().getID() != options::OPT_fno_unsafe_math_optimizations && 2428 A->getOption().getID() != options::OPT_ftrapping_math) 2429 TrappingMath = false; 2430 if (!MathErrno && AssociativeMath && ReciprocalMath && !SignedZeros && 2431 !TrappingMath) 2432 CmdArgs.push_back("-menable-unsafe-fp-math"); 2433 2434 2435 // Validate and pass through -fp-contract option. 2436 if (Arg *A = Args.getLastArg(options::OPT_ffast_math, FastMathAliasOption, 2437 options::OPT_fno_fast_math, 2438 options::OPT_ffp_contract)) { 2439 if (A->getOption().getID() == options::OPT_ffp_contract) { 2440 StringRef Val = A->getValue(); 2441 if (Val == "fast" || Val == "on" || Val == "off") { 2442 CmdArgs.push_back(Args.MakeArgString("-ffp-contract=" + Val)); 2443 } else { 2444 D.Diag(diag::err_drv_unsupported_option_argument) 2445 << A->getOption().getName() << Val; 2446 } 2447 } else if (A->getOption().matches(options::OPT_ffast_math) || 2448 (OFastEnabled && A->getOption().matches(options::OPT_Ofast))) { 2449 // If fast-math is set then set the fp-contract mode to fast. 2450 CmdArgs.push_back(Args.MakeArgString("-ffp-contract=fast")); 2451 } 2452 } 2453 2454 // We separately look for the '-ffast-math' and '-ffinite-math-only' flags, 2455 // and if we find them, tell the frontend to provide the appropriate 2456 // preprocessor macros. This is distinct from enabling any optimizations as 2457 // these options induce language changes which must survive serialization 2458 // and deserialization, etc. 2459 if (Arg *A = Args.getLastArg(options::OPT_ffast_math, FastMathAliasOption, 2460 options::OPT_fno_fast_math)) 2461 if (!A->getOption().matches(options::OPT_fno_fast_math)) 2462 CmdArgs.push_back("-ffast-math"); 2463 if (Arg *A = Args.getLastArg(options::OPT_ffinite_math_only, options::OPT_fno_fast_math)) 2464 if (A->getOption().matches(options::OPT_ffinite_math_only)) 2465 CmdArgs.push_back("-ffinite-math-only"); 2466 2467 // Decide whether to use verbose asm. Verbose assembly is the default on 2468 // toolchains which have the integrated assembler on by default. 2469 bool IsVerboseAsmDefault = getToolChain().IsIntegratedAssemblerDefault(); 2470 if (Args.hasFlag(options::OPT_fverbose_asm, options::OPT_fno_verbose_asm, 2471 IsVerboseAsmDefault) || 2472 Args.hasArg(options::OPT_dA)) 2473 CmdArgs.push_back("-masm-verbose"); 2474 2475 if (Args.hasArg(options::OPT_fdebug_pass_structure)) { 2476 CmdArgs.push_back("-mdebug-pass"); 2477 CmdArgs.push_back("Structure"); 2478 } 2479 if (Args.hasArg(options::OPT_fdebug_pass_arguments)) { 2480 CmdArgs.push_back("-mdebug-pass"); 2481 CmdArgs.push_back("Arguments"); 2482 } 2483 2484 // Enable -mconstructor-aliases except on darwin, where we have to 2485 // work around a linker bug; see <rdar://problem/7651567>. 2486 if (!getToolChain().getTriple().isOSDarwin()) 2487 CmdArgs.push_back("-mconstructor-aliases"); 2488 2489 // Darwin's kernel doesn't support guard variables; just die if we 2490 // try to use them. 2491 if (KernelOrKext && getToolChain().getTriple().isOSDarwin()) 2492 CmdArgs.push_back("-fforbid-guard-variables"); 2493 2494 if (Args.hasArg(options::OPT_mms_bitfields)) { 2495 CmdArgs.push_back("-mms-bitfields"); 2496 } 2497 2498 // This is a coarse approximation of what llvm-gcc actually does, both 2499 // -fasynchronous-unwind-tables and -fnon-call-exceptions interact in more 2500 // complicated ways. 2501 bool AsynchronousUnwindTables = 2502 Args.hasFlag(options::OPT_fasynchronous_unwind_tables, 2503 options::OPT_fno_asynchronous_unwind_tables, 2504 getToolChain().IsUnwindTablesDefault() && 2505 !KernelOrKext); 2506 if (Args.hasFlag(options::OPT_funwind_tables, options::OPT_fno_unwind_tables, 2507 AsynchronousUnwindTables)) 2508 CmdArgs.push_back("-munwind-tables"); 2509 2510 getToolChain().addClangTargetOptions(Args, CmdArgs); 2511 2512 if (Arg *A = Args.getLastArg(options::OPT_flimited_precision_EQ)) { 2513 CmdArgs.push_back("-mlimit-float-precision"); 2514 CmdArgs.push_back(A->getValue()); 2515 } 2516 2517 // FIXME: Handle -mtune=. 2518 (void) Args.hasArg(options::OPT_mtune_EQ); 2519 2520 if (Arg *A = Args.getLastArg(options::OPT_mcmodel_EQ)) { 2521 CmdArgs.push_back("-mcode-model"); 2522 CmdArgs.push_back(A->getValue()); 2523 } 2524 2525 // Add the target cpu 2526 std::string ETripleStr = getToolChain().ComputeEffectiveClangTriple(Args); 2527 llvm::Triple ETriple(ETripleStr); 2528 std::string CPU = getCPUName(Args, ETriple); 2529 if (!CPU.empty()) { 2530 CmdArgs.push_back("-target-cpu"); 2531 CmdArgs.push_back(Args.MakeArgString(CPU)); 2532 } 2533 2534 if (const Arg *A = Args.getLastArg(options::OPT_mfpmath_EQ)) { 2535 CmdArgs.push_back("-mfpmath"); 2536 CmdArgs.push_back(A->getValue()); 2537 } 2538 2539 // Add the target features 2540 getTargetFeatures(D, ETriple, Args, CmdArgs); 2541 2542 // Add target specific flags. 2543 switch(getToolChain().getArch()) { 2544 default: 2545 break; 2546 2547 case llvm::Triple::arm: 2548 case llvm::Triple::thumb: 2549 AddARMTargetArgs(Args, CmdArgs, KernelOrKext); 2550 break; 2551 2552 case llvm::Triple::mips: 2553 case llvm::Triple::mipsel: 2554 case llvm::Triple::mips64: 2555 case llvm::Triple::mips64el: 2556 AddMIPSTargetArgs(Args, CmdArgs); 2557 break; 2558 2559 case llvm::Triple::sparc: 2560 AddSparcTargetArgs(Args, CmdArgs); 2561 break; 2562 2563 case llvm::Triple::x86: 2564 case llvm::Triple::x86_64: 2565 AddX86TargetArgs(Args, CmdArgs); 2566 break; 2567 2568 case llvm::Triple::hexagon: 2569 AddHexagonTargetArgs(Args, CmdArgs); 2570 break; 2571 } 2572 2573 // Add clang-cl arguments. 2574 if (getToolChain().getDriver().IsCLMode()) 2575 AddClangCLArgs(Args, CmdArgs); 2576 2577 // Pass the linker version in use. 2578 if (Arg *A = Args.getLastArg(options::OPT_mlinker_version_EQ)) { 2579 CmdArgs.push_back("-target-linker-version"); 2580 CmdArgs.push_back(A->getValue()); 2581 } 2582 2583 if (!shouldUseLeafFramePointer(Args, getToolChain().getTriple())) 2584 CmdArgs.push_back("-momit-leaf-frame-pointer"); 2585 2586 // Explicitly error on some things we know we don't support and can't just 2587 // ignore. 2588 types::ID InputType = Inputs[0].getType(); 2589 if (!Args.hasArg(options::OPT_fallow_unsupported)) { 2590 Arg *Unsupported; 2591 if (types::isCXX(InputType) && 2592 getToolChain().getTriple().isOSDarwin() && 2593 getToolChain().getArch() == llvm::Triple::x86) { 2594 if ((Unsupported = Args.getLastArg(options::OPT_fapple_kext)) || 2595 (Unsupported = Args.getLastArg(options::OPT_mkernel))) 2596 D.Diag(diag::err_drv_clang_unsupported_opt_cxx_darwin_i386) 2597 << Unsupported->getOption().getName(); 2598 } 2599 } 2600 2601 Args.AddAllArgs(CmdArgs, options::OPT_v); 2602 Args.AddLastArg(CmdArgs, options::OPT_H); 2603 if (D.CCPrintHeaders && !D.CCGenDiagnostics) { 2604 CmdArgs.push_back("-header-include-file"); 2605 CmdArgs.push_back(D.CCPrintHeadersFilename ? 2606 D.CCPrintHeadersFilename : "-"); 2607 } 2608 Args.AddLastArg(CmdArgs, options::OPT_P); 2609 Args.AddLastArg(CmdArgs, options::OPT_print_ivar_layout); 2610 2611 if (D.CCLogDiagnostics && !D.CCGenDiagnostics) { 2612 CmdArgs.push_back("-diagnostic-log-file"); 2613 CmdArgs.push_back(D.CCLogDiagnosticsFilename ? 2614 D.CCLogDiagnosticsFilename : "-"); 2615 } 2616 2617 // Use the last option from "-g" group. "-gline-tables-only" 2618 // is preserved, all other debug options are substituted with "-g". 2619 Args.ClaimAllArgs(options::OPT_g_Group); 2620 if (Arg *A = Args.getLastArg(options::OPT_g_Group)) { 2621 if (A->getOption().matches(options::OPT_gline_tables_only)) 2622 CmdArgs.push_back("-gline-tables-only"); 2623 else if (A->getOption().matches(options::OPT_gdwarf_2)) 2624 CmdArgs.push_back("-gdwarf-2"); 2625 else if (A->getOption().matches(options::OPT_gdwarf_3)) 2626 CmdArgs.push_back("-gdwarf-3"); 2627 else if (A->getOption().matches(options::OPT_gdwarf_4)) 2628 CmdArgs.push_back("-gdwarf-4"); 2629 else if (!A->getOption().matches(options::OPT_g0) && 2630 !A->getOption().matches(options::OPT_ggdb0)) { 2631 // Default is dwarf-2 for darwin and FreeBSD. 2632 const llvm::Triple &Triple = getToolChain().getTriple(); 2633 if (Triple.isOSDarwin() || Triple.getOS() == llvm::Triple::FreeBSD) 2634 CmdArgs.push_back("-gdwarf-2"); 2635 else 2636 CmdArgs.push_back("-g"); 2637 } 2638 } 2639 2640 // We ignore flags -gstrict-dwarf and -grecord-gcc-switches for now. 2641 Args.ClaimAllArgs(options::OPT_g_flags_Group); 2642 if (Args.hasArg(options::OPT_gcolumn_info)) 2643 CmdArgs.push_back("-dwarf-column-info"); 2644 2645 // FIXME: Move backend command line options to the module. 2646 // -gsplit-dwarf should turn on -g and enable the backend dwarf 2647 // splitting and extraction. 2648 // FIXME: Currently only works on Linux. 2649 if (getToolChain().getTriple().isOSLinux() && 2650 Args.hasArg(options::OPT_gsplit_dwarf)) { 2651 CmdArgs.push_back("-g"); 2652 CmdArgs.push_back("-backend-option"); 2653 CmdArgs.push_back("-split-dwarf=Enable"); 2654 } 2655 2656 // -ggnu-pubnames turns on gnu style pubnames in the backend. 2657 if (Args.hasArg(options::OPT_ggnu_pubnames)) { 2658 CmdArgs.push_back("-backend-option"); 2659 CmdArgs.push_back("-generate-gnu-dwarf-pub-sections"); 2660 } 2661 2662 Args.AddAllArgs(CmdArgs, options::OPT_fdebug_types_section); 2663 2664 Args.AddAllArgs(CmdArgs, options::OPT_ffunction_sections); 2665 Args.AddAllArgs(CmdArgs, options::OPT_fdata_sections); 2666 2667 Args.AddAllArgs(CmdArgs, options::OPT_finstrument_functions); 2668 2669 if (Args.hasArg(options::OPT_ftest_coverage) || 2670 Args.hasArg(options::OPT_coverage)) 2671 CmdArgs.push_back("-femit-coverage-notes"); 2672 if (Args.hasArg(options::OPT_fprofile_arcs) || 2673 Args.hasArg(options::OPT_coverage)) 2674 CmdArgs.push_back("-femit-coverage-data"); 2675 2676 if (C.getArgs().hasArg(options::OPT_c) || 2677 C.getArgs().hasArg(options::OPT_S)) { 2678 if (Output.isFilename()) { 2679 CmdArgs.push_back("-coverage-file"); 2680 SmallString<128> CoverageFilename(Output.getFilename()); 2681 if (llvm::sys::path::is_relative(CoverageFilename.str())) { 2682 SmallString<128> Pwd; 2683 if (!llvm::sys::fs::current_path(Pwd)) { 2684 llvm::sys::path::append(Pwd, CoverageFilename.str()); 2685 CoverageFilename.swap(Pwd); 2686 } 2687 } 2688 CmdArgs.push_back(Args.MakeArgString(CoverageFilename)); 2689 } 2690 } 2691 2692 // Pass options for controlling the default header search paths. 2693 if (Args.hasArg(options::OPT_nostdinc)) { 2694 CmdArgs.push_back("-nostdsysteminc"); 2695 CmdArgs.push_back("-nobuiltininc"); 2696 } else { 2697 if (Args.hasArg(options::OPT_nostdlibinc)) 2698 CmdArgs.push_back("-nostdsysteminc"); 2699 Args.AddLastArg(CmdArgs, options::OPT_nostdincxx); 2700 Args.AddLastArg(CmdArgs, options::OPT_nobuiltininc); 2701 } 2702 2703 // Pass the path to compiler resource files. 2704 CmdArgs.push_back("-resource-dir"); 2705 CmdArgs.push_back(D.ResourceDir.c_str()); 2706 2707 Args.AddLastArg(CmdArgs, options::OPT_working_directory); 2708 2709 bool ARCMTEnabled = false; 2710 if (!Args.hasArg(options::OPT_fno_objc_arc, options::OPT_fobjc_arc)) { 2711 if (const Arg *A = Args.getLastArg(options::OPT_ccc_arcmt_check, 2712 options::OPT_ccc_arcmt_modify, 2713 options::OPT_ccc_arcmt_migrate)) { 2714 ARCMTEnabled = true; 2715 switch (A->getOption().getID()) { 2716 default: 2717 llvm_unreachable("missed a case"); 2718 case options::OPT_ccc_arcmt_check: 2719 CmdArgs.push_back("-arcmt-check"); 2720 break; 2721 case options::OPT_ccc_arcmt_modify: 2722 CmdArgs.push_back("-arcmt-modify"); 2723 break; 2724 case options::OPT_ccc_arcmt_migrate: 2725 CmdArgs.push_back("-arcmt-migrate"); 2726 CmdArgs.push_back("-mt-migrate-directory"); 2727 CmdArgs.push_back(A->getValue()); 2728 2729 Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_report_output); 2730 Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_emit_arc_errors); 2731 break; 2732 } 2733 } 2734 } else { 2735 Args.ClaimAllArgs(options::OPT_ccc_arcmt_check); 2736 Args.ClaimAllArgs(options::OPT_ccc_arcmt_modify); 2737 Args.ClaimAllArgs(options::OPT_ccc_arcmt_migrate); 2738 } 2739 2740 if (const Arg *A = Args.getLastArg(options::OPT_ccc_objcmt_migrate)) { 2741 if (ARCMTEnabled) { 2742 D.Diag(diag::err_drv_argument_not_allowed_with) 2743 << A->getAsString(Args) << "-ccc-arcmt-migrate"; 2744 } 2745 CmdArgs.push_back("-mt-migrate-directory"); 2746 CmdArgs.push_back(A->getValue()); 2747 2748 if (!Args.hasArg(options::OPT_objcmt_migrate_literals, 2749 options::OPT_objcmt_migrate_subscripting, 2750 options::OPT_objcmt_migrate_property)) { 2751 // None specified, means enable them all. 2752 CmdArgs.push_back("-objcmt-migrate-literals"); 2753 CmdArgs.push_back("-objcmt-migrate-subscripting"); 2754 CmdArgs.push_back("-objcmt-migrate-property"); 2755 } else { 2756 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals); 2757 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting); 2758 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property); 2759 } 2760 } else { 2761 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals); 2762 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting); 2763 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property); 2764 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_all); 2765 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readonly_property); 2766 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readwrite_property); 2767 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_annotation); 2768 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_instancetype); 2769 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_nsmacros); 2770 Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_protocol_conformance); 2771 Args.AddLastArg(CmdArgs, options::OPT_objcmt_atomic_property); 2772 Args.AddLastArg(CmdArgs, options::OPT_objcmt_returns_innerpointer_property); 2773 Args.AddLastArg(CmdArgs, options::OPT_objcmt_ns_nonatomic_iosonly); 2774 Args.AddLastArg(CmdArgs, options::OPT_objcmt_white_list_dir_path); 2775 } 2776 2777 // Add preprocessing options like -I, -D, etc. if we are using the 2778 // preprocessor. 2779 // 2780 // FIXME: Support -fpreprocessed 2781 if (types::getPreprocessedType(InputType) != types::TY_INVALID) 2782 AddPreprocessingOptions(C, JA, D, Args, CmdArgs, Output, Inputs); 2783 2784 // Don't warn about "clang -c -DPIC -fPIC test.i" because libtool.m4 assumes 2785 // that "The compiler can only warn and ignore the option if not recognized". 2786 // When building with ccache, it will pass -D options to clang even on 2787 // preprocessed inputs and configure concludes that -fPIC is not supported. 2788 Args.ClaimAllArgs(options::OPT_D); 2789 2790 // Manually translate -O4 to -O3; let clang reject others. 2791 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 2792 if (A->getOption().matches(options::OPT_O4)) { 2793 CmdArgs.push_back("-O3"); 2794 D.Diag(diag::warn_O4_is_O3); 2795 } else { 2796 A->render(Args, CmdArgs); 2797 } 2798 } 2799 2800 // Don't warn about unused -flto. This can happen when we're preprocessing or 2801 // precompiling. 2802 Args.ClaimAllArgs(options::OPT_flto); 2803 2804 Args.AddAllArgs(CmdArgs, options::OPT_W_Group); 2805 if (Args.hasFlag(options::OPT_pedantic, options::OPT_no_pedantic, false)) 2806 CmdArgs.push_back("-pedantic"); 2807 Args.AddLastArg(CmdArgs, options::OPT_pedantic_errors); 2808 Args.AddLastArg(CmdArgs, options::OPT_w); 2809 2810 // Handle -{std, ansi, trigraphs} -- take the last of -{std, ansi} 2811 // (-ansi is equivalent to -std=c89 or -std=c++98). 2812 // 2813 // If a std is supplied, only add -trigraphs if it follows the 2814 // option. 2815 if (Arg *Std = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi)) { 2816 if (Std->getOption().matches(options::OPT_ansi)) 2817 if (types::isCXX(InputType)) 2818 CmdArgs.push_back("-std=c++98"); 2819 else 2820 CmdArgs.push_back("-std=c89"); 2821 else 2822 Std->render(Args, CmdArgs); 2823 2824 if (Arg *A = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi, 2825 options::OPT_trigraphs)) 2826 if (A != Std) 2827 A->render(Args, CmdArgs); 2828 } else { 2829 // Honor -std-default. 2830 // 2831 // FIXME: Clang doesn't correctly handle -std= when the input language 2832 // doesn't match. For the time being just ignore this for C++ inputs; 2833 // eventually we want to do all the standard defaulting here instead of 2834 // splitting it between the driver and clang -cc1. 2835 if (!types::isCXX(InputType)) 2836 Args.AddAllArgsTranslated(CmdArgs, options::OPT_std_default_EQ, 2837 "-std=", /*Joined=*/true); 2838 else if (getToolChain().getTriple().getOS() == llvm::Triple::Win32) 2839 CmdArgs.push_back("-std=c++11"); 2840 2841 Args.AddLastArg(CmdArgs, options::OPT_trigraphs); 2842 } 2843 2844 // GCC's behavior for -Wwrite-strings is a bit strange: 2845 // * In C, this "warning flag" changes the types of string literals from 2846 // 'char[N]' to 'const char[N]', and thus triggers an unrelated warning 2847 // for the discarded qualifier. 2848 // * In C++, this is just a normal warning flag. 2849 // 2850 // Implementing this warning correctly in C is hard, so we follow GCC's 2851 // behavior for now. FIXME: Directly diagnose uses of a string literal as 2852 // a non-const char* in C, rather than using this crude hack. 2853 if (!types::isCXX(InputType)) { 2854 DiagnosticsEngine::Level DiagLevel = D.getDiags().getDiagnosticLevel( 2855 diag::warn_deprecated_string_literal_conversion_c, SourceLocation()); 2856 if (DiagLevel > DiagnosticsEngine::Ignored) 2857 CmdArgs.push_back("-fconst-strings"); 2858 } 2859 2860 // GCC provides a macro definition '__DEPRECATED' when -Wdeprecated is active 2861 // during C++ compilation, which it is by default. GCC keeps this define even 2862 // in the presence of '-w', match this behavior bug-for-bug. 2863 if (types::isCXX(InputType) && 2864 Args.hasFlag(options::OPT_Wdeprecated, options::OPT_Wno_deprecated, 2865 true)) { 2866 CmdArgs.push_back("-fdeprecated-macro"); 2867 } 2868 2869 // Translate GCC's misnamer '-fasm' arguments to '-fgnu-keywords'. 2870 if (Arg *Asm = Args.getLastArg(options::OPT_fasm, options::OPT_fno_asm)) { 2871 if (Asm->getOption().matches(options::OPT_fasm)) 2872 CmdArgs.push_back("-fgnu-keywords"); 2873 else 2874 CmdArgs.push_back("-fno-gnu-keywords"); 2875 } 2876 2877 if (ShouldDisableCFI(Args, getToolChain())) 2878 CmdArgs.push_back("-fno-dwarf2-cfi-asm"); 2879 2880 if (ShouldDisableDwarfDirectory(Args, getToolChain())) 2881 CmdArgs.push_back("-fno-dwarf-directory-asm"); 2882 2883 if (ShouldDisableAutolink(Args, getToolChain())) 2884 CmdArgs.push_back("-fno-autolink"); 2885 2886 // Add in -fdebug-compilation-dir if necessary. 2887 addDebugCompDirArg(Args, CmdArgs); 2888 2889 if (Arg *A = Args.getLastArg(options::OPT_ftemplate_depth_, 2890 options::OPT_ftemplate_depth_EQ)) { 2891 CmdArgs.push_back("-ftemplate-depth"); 2892 CmdArgs.push_back(A->getValue()); 2893 } 2894 2895 if (Arg *A = Args.getLastArg(options::OPT_foperator_arrow_depth_EQ)) { 2896 CmdArgs.push_back("-foperator-arrow-depth"); 2897 CmdArgs.push_back(A->getValue()); 2898 } 2899 2900 if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_depth_EQ)) { 2901 CmdArgs.push_back("-fconstexpr-depth"); 2902 CmdArgs.push_back(A->getValue()); 2903 } 2904 2905 if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_steps_EQ)) { 2906 CmdArgs.push_back("-fconstexpr-steps"); 2907 CmdArgs.push_back(A->getValue()); 2908 } 2909 2910 if (Arg *A = Args.getLastArg(options::OPT_fbracket_depth_EQ)) { 2911 CmdArgs.push_back("-fbracket-depth"); 2912 CmdArgs.push_back(A->getValue()); 2913 } 2914 2915 if (Arg *A = Args.getLastArg(options::OPT_Wlarge_by_value_copy_EQ, 2916 options::OPT_Wlarge_by_value_copy_def)) { 2917 if (A->getNumValues()) { 2918 StringRef bytes = A->getValue(); 2919 CmdArgs.push_back(Args.MakeArgString("-Wlarge-by-value-copy=" + bytes)); 2920 } else 2921 CmdArgs.push_back("-Wlarge-by-value-copy=64"); // default value 2922 } 2923 2924 2925 if (Args.hasArg(options::OPT_relocatable_pch)) 2926 CmdArgs.push_back("-relocatable-pch"); 2927 2928 if (Arg *A = Args.getLastArg(options::OPT_fconstant_string_class_EQ)) { 2929 CmdArgs.push_back("-fconstant-string-class"); 2930 CmdArgs.push_back(A->getValue()); 2931 } 2932 2933 if (Arg *A = Args.getLastArg(options::OPT_ftabstop_EQ)) { 2934 CmdArgs.push_back("-ftabstop"); 2935 CmdArgs.push_back(A->getValue()); 2936 } 2937 2938 CmdArgs.push_back("-ferror-limit"); 2939 if (Arg *A = Args.getLastArg(options::OPT_ferror_limit_EQ)) 2940 CmdArgs.push_back(A->getValue()); 2941 else 2942 CmdArgs.push_back("19"); 2943 2944 if (Arg *A = Args.getLastArg(options::OPT_fmacro_backtrace_limit_EQ)) { 2945 CmdArgs.push_back("-fmacro-backtrace-limit"); 2946 CmdArgs.push_back(A->getValue()); 2947 } 2948 2949 if (Arg *A = Args.getLastArg(options::OPT_ftemplate_backtrace_limit_EQ)) { 2950 CmdArgs.push_back("-ftemplate-backtrace-limit"); 2951 CmdArgs.push_back(A->getValue()); 2952 } 2953 2954 if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_backtrace_limit_EQ)) { 2955 CmdArgs.push_back("-fconstexpr-backtrace-limit"); 2956 CmdArgs.push_back(A->getValue()); 2957 } 2958 2959 // Pass -fmessage-length=. 2960 CmdArgs.push_back("-fmessage-length"); 2961 if (Arg *A = Args.getLastArg(options::OPT_fmessage_length_EQ)) { 2962 CmdArgs.push_back(A->getValue()); 2963 } else { 2964 // If -fmessage-length=N was not specified, determine whether this is a 2965 // terminal and, if so, implicitly define -fmessage-length appropriately. 2966 unsigned N = llvm::sys::Process::StandardErrColumns(); 2967 CmdArgs.push_back(Args.MakeArgString(Twine(N))); 2968 } 2969 2970 // -fvisibility= and -fvisibility-ms-compat are of a piece. 2971 if (const Arg *A = Args.getLastArg(options::OPT_fvisibility_EQ, 2972 options::OPT_fvisibility_ms_compat)) { 2973 if (A->getOption().matches(options::OPT_fvisibility_EQ)) { 2974 CmdArgs.push_back("-fvisibility"); 2975 CmdArgs.push_back(A->getValue()); 2976 } else { 2977 assert(A->getOption().matches(options::OPT_fvisibility_ms_compat)); 2978 CmdArgs.push_back("-fvisibility"); 2979 CmdArgs.push_back("hidden"); 2980 CmdArgs.push_back("-ftype-visibility"); 2981 CmdArgs.push_back("default"); 2982 } 2983 } 2984 2985 Args.AddLastArg(CmdArgs, options::OPT_fvisibility_inlines_hidden); 2986 2987 Args.AddLastArg(CmdArgs, options::OPT_ftlsmodel_EQ); 2988 2989 // -fhosted is default. 2990 if (Args.hasFlag(options::OPT_ffreestanding, options::OPT_fhosted, false) || 2991 KernelOrKext) 2992 CmdArgs.push_back("-ffreestanding"); 2993 2994 // Forward -f (flag) options which we can pass directly. 2995 Args.AddLastArg(CmdArgs, options::OPT_femit_all_decls); 2996 Args.AddLastArg(CmdArgs, options::OPT_fformat_extensions); 2997 Args.AddLastArg(CmdArgs, options::OPT_fheinous_gnu_extensions); 2998 Args.AddLastArg(CmdArgs, options::OPT_flimit_debug_info); 2999 Args.AddLastArg(CmdArgs, options::OPT_fno_limit_debug_info); 3000 Args.AddLastArg(CmdArgs, options::OPT_fno_operator_names); 3001 // AltiVec language extensions aren't relevant for assembling. 3002 if (!isa<PreprocessJobAction>(JA) || 3003 Output.getType() != types::TY_PP_Asm) 3004 Args.AddLastArg(CmdArgs, options::OPT_faltivec); 3005 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_show_template_tree); 3006 Args.AddLastArg(CmdArgs, options::OPT_fno_elide_type); 3007 3008 const SanitizerArgs &Sanitize = getToolChain().getSanitizerArgs(); 3009 Sanitize.addArgs(Args, CmdArgs); 3010 3011 if (!Args.hasFlag(options::OPT_fsanitize_recover, 3012 options::OPT_fno_sanitize_recover, 3013 true)) 3014 CmdArgs.push_back("-fno-sanitize-recover"); 3015 3016 if (Args.hasArg(options::OPT_fcatch_undefined_behavior) || 3017 Args.hasFlag(options::OPT_fsanitize_undefined_trap_on_error, 3018 options::OPT_fno_sanitize_undefined_trap_on_error, false)) 3019 CmdArgs.push_back("-fsanitize-undefined-trap-on-error"); 3020 3021 // Report an error for -faltivec on anything other than PowerPC. 3022 if (const Arg *A = Args.getLastArg(options::OPT_faltivec)) 3023 if (!(getToolChain().getArch() == llvm::Triple::ppc || 3024 getToolChain().getArch() == llvm::Triple::ppc64 || 3025 getToolChain().getArch() == llvm::Triple::ppc64le)) 3026 D.Diag(diag::err_drv_argument_only_allowed_with) 3027 << A->getAsString(Args) << "ppc/ppc64/ppc64le"; 3028 3029 if (getToolChain().SupportsProfiling()) 3030 Args.AddLastArg(CmdArgs, options::OPT_pg); 3031 3032 // -flax-vector-conversions is default. 3033 if (!Args.hasFlag(options::OPT_flax_vector_conversions, 3034 options::OPT_fno_lax_vector_conversions)) 3035 CmdArgs.push_back("-fno-lax-vector-conversions"); 3036 3037 if (Args.getLastArg(options::OPT_fapple_kext)) 3038 CmdArgs.push_back("-fapple-kext"); 3039 3040 if (Args.hasFlag(options::OPT_frewrite_includes, 3041 options::OPT_fno_rewrite_includes, false)) 3042 CmdArgs.push_back("-frewrite-includes"); 3043 3044 Args.AddLastArg(CmdArgs, options::OPT_fobjc_sender_dependent_dispatch); 3045 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_print_source_range_info); 3046 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_parseable_fixits); 3047 Args.AddLastArg(CmdArgs, options::OPT_ftime_report); 3048 Args.AddLastArg(CmdArgs, options::OPT_ftrapv); 3049 3050 if (Arg *A = Args.getLastArg(options::OPT_ftrapv_handler_EQ)) { 3051 CmdArgs.push_back("-ftrapv-handler"); 3052 CmdArgs.push_back(A->getValue()); 3053 } 3054 3055 Args.AddLastArg(CmdArgs, options::OPT_ftrap_function_EQ); 3056 3057 // -fno-strict-overflow implies -fwrapv if it isn't disabled, but 3058 // -fstrict-overflow won't turn off an explicitly enabled -fwrapv. 3059 if (Arg *A = Args.getLastArg(options::OPT_fwrapv, 3060 options::OPT_fno_wrapv)) { 3061 if (A->getOption().matches(options::OPT_fwrapv)) 3062 CmdArgs.push_back("-fwrapv"); 3063 } else if (Arg *A = Args.getLastArg(options::OPT_fstrict_overflow, 3064 options::OPT_fno_strict_overflow)) { 3065 if (A->getOption().matches(options::OPT_fno_strict_overflow)) 3066 CmdArgs.push_back("-fwrapv"); 3067 } 3068 3069 if (Arg *A = Args.getLastArg(options::OPT_freroll_loops, 3070 options::OPT_fno_reroll_loops)) 3071 if (A->getOption().matches(options::OPT_freroll_loops)) 3072 CmdArgs.push_back("-freroll-loops"); 3073 3074 Args.AddLastArg(CmdArgs, options::OPT_fwritable_strings); 3075 Args.AddLastArg(CmdArgs, options::OPT_funroll_loops, 3076 options::OPT_fno_unroll_loops); 3077 3078 Args.AddLastArg(CmdArgs, options::OPT_pthread); 3079 3080 3081 // -stack-protector=0 is default. 3082 unsigned StackProtectorLevel = 0; 3083 if (Arg *A = Args.getLastArg(options::OPT_fno_stack_protector, 3084 options::OPT_fstack_protector_all, 3085 options::OPT_fstack_protector)) { 3086 if (A->getOption().matches(options::OPT_fstack_protector)) 3087 StackProtectorLevel = 1; 3088 else if (A->getOption().matches(options::OPT_fstack_protector_all)) 3089 StackProtectorLevel = 2; 3090 } else { 3091 StackProtectorLevel = 3092 getToolChain().GetDefaultStackProtectorLevel(KernelOrKext); 3093 } 3094 if (StackProtectorLevel) { 3095 CmdArgs.push_back("-stack-protector"); 3096 CmdArgs.push_back(Args.MakeArgString(Twine(StackProtectorLevel))); 3097 } 3098 3099 // --param ssp-buffer-size= 3100 for (arg_iterator it = Args.filtered_begin(options::OPT__param), 3101 ie = Args.filtered_end(); it != ie; ++it) { 3102 StringRef Str((*it)->getValue()); 3103 if (Str.startswith("ssp-buffer-size=")) { 3104 if (StackProtectorLevel) { 3105 CmdArgs.push_back("-stack-protector-buffer-size"); 3106 // FIXME: Verify the argument is a valid integer. 3107 CmdArgs.push_back(Args.MakeArgString(Str.drop_front(16))); 3108 } 3109 (*it)->claim(); 3110 } 3111 } 3112 3113 // Translate -mstackrealign 3114 if (Args.hasFlag(options::OPT_mstackrealign, options::OPT_mno_stackrealign, 3115 false)) { 3116 CmdArgs.push_back("-backend-option"); 3117 CmdArgs.push_back("-force-align-stack"); 3118 } 3119 if (!Args.hasFlag(options::OPT_mno_stackrealign, options::OPT_mstackrealign, 3120 false)) { 3121 CmdArgs.push_back(Args.MakeArgString("-mstackrealign")); 3122 } 3123 3124 if (Args.hasArg(options::OPT_mstack_alignment)) { 3125 StringRef alignment = Args.getLastArgValue(options::OPT_mstack_alignment); 3126 CmdArgs.push_back(Args.MakeArgString("-mstack-alignment=" + alignment)); 3127 } 3128 // -mkernel implies -mstrict-align; don't add the redundant option. 3129 if (!KernelOrKext) { 3130 if (Arg *A = Args.getLastArg(options::OPT_mno_unaligned_access, 3131 options::OPT_munaligned_access)) { 3132 if (A->getOption().matches(options::OPT_mno_unaligned_access)) { 3133 CmdArgs.push_back("-backend-option"); 3134 CmdArgs.push_back("-arm-strict-align"); 3135 } else { 3136 CmdArgs.push_back("-backend-option"); 3137 CmdArgs.push_back("-arm-no-strict-align"); 3138 } 3139 } 3140 } 3141 3142 if (Arg *A = Args.getLastArg(options::OPT_mrestrict_it, 3143 options::OPT_mno_restrict_it)) { 3144 if (A->getOption().matches(options::OPT_mrestrict_it)) { 3145 CmdArgs.push_back("-backend-option"); 3146 CmdArgs.push_back("-arm-restrict-it"); 3147 } else { 3148 CmdArgs.push_back("-backend-option"); 3149 CmdArgs.push_back("-arm-no-restrict-it"); 3150 } 3151 } 3152 3153 // Forward -f options with positive and negative forms; we translate 3154 // these by hand. 3155 if (Arg *A = Args.getLastArg(options::OPT_fprofile_sample_use_EQ)) { 3156 StringRef fname = A->getValue(); 3157 if (!llvm::sys::fs::exists(fname)) 3158 D.Diag(diag::err_drv_no_such_file) << fname; 3159 else 3160 A->render(Args, CmdArgs); 3161 } 3162 3163 if (Args.hasArg(options::OPT_mkernel)) { 3164 if (!Args.hasArg(options::OPT_fapple_kext) && types::isCXX(InputType)) 3165 CmdArgs.push_back("-fapple-kext"); 3166 if (!Args.hasArg(options::OPT_fbuiltin)) 3167 CmdArgs.push_back("-fno-builtin"); 3168 Args.ClaimAllArgs(options::OPT_fno_builtin); 3169 } 3170 // -fbuiltin is default. 3171 else if (!Args.hasFlag(options::OPT_fbuiltin, options::OPT_fno_builtin)) 3172 CmdArgs.push_back("-fno-builtin"); 3173 3174 if (!Args.hasFlag(options::OPT_fassume_sane_operator_new, 3175 options::OPT_fno_assume_sane_operator_new)) 3176 CmdArgs.push_back("-fno-assume-sane-operator-new"); 3177 3178 // -fblocks=0 is default. 3179 if (Args.hasFlag(options::OPT_fblocks, options::OPT_fno_blocks, 3180 getToolChain().IsBlocksDefault()) || 3181 (Args.hasArg(options::OPT_fgnu_runtime) && 3182 Args.hasArg(options::OPT_fobjc_nonfragile_abi) && 3183 !Args.hasArg(options::OPT_fno_blocks))) { 3184 CmdArgs.push_back("-fblocks"); 3185 3186 if (!Args.hasArg(options::OPT_fgnu_runtime) && 3187 !getToolChain().hasBlocksRuntime()) 3188 CmdArgs.push_back("-fblocks-runtime-optional"); 3189 } 3190 3191 // -fmodules enables modules (off by default). However, for C++/Objective-C++, 3192 // users must also pass -fcxx-modules. The latter flag will disappear once the 3193 // modules implementation is solid for C++/Objective-C++ programs as well. 3194 bool HaveModules = false; 3195 if (Args.hasFlag(options::OPT_fmodules, options::OPT_fno_modules, false)) { 3196 bool AllowedInCXX = Args.hasFlag(options::OPT_fcxx_modules, 3197 options::OPT_fno_cxx_modules, 3198 false); 3199 if (AllowedInCXX || !types::isCXX(InputType)) { 3200 CmdArgs.push_back("-fmodules"); 3201 HaveModules = true; 3202 } 3203 } 3204 3205 // -fmodule-maps enables module map processing (off by default) for header 3206 // checking. It is implied by -fmodules. 3207 if (Args.hasFlag(options::OPT_fmodule_maps, options::OPT_fno_module_maps, 3208 false)) { 3209 CmdArgs.push_back("-fmodule-maps"); 3210 } 3211 3212 // -fmodules-decluse checks that modules used are declared so (off by 3213 // default). 3214 if (Args.hasFlag(options::OPT_fmodules_decluse, 3215 options::OPT_fno_modules_decluse, 3216 false)) { 3217 CmdArgs.push_back("-fmodules-decluse"); 3218 } 3219 3220 // -fmodule-name specifies the module that is currently being built (or 3221 // used for header checking by -fmodule-maps). 3222 if (Arg *A = Args.getLastArg(options::OPT_fmodule_name)) { 3223 A->claim(); 3224 A->render(Args, CmdArgs); 3225 } 3226 3227 // -fmodule-map-file can be used to specify a file containing module 3228 // definitions. 3229 if (Arg *A = Args.getLastArg(options::OPT_fmodule_map_file)) { 3230 A->claim(); 3231 A->render(Args, CmdArgs); 3232 } 3233 3234 // If a module path was provided, pass it along. Otherwise, use a temporary 3235 // directory. 3236 if (Arg *A = Args.getLastArg(options::OPT_fmodules_cache_path)) { 3237 A->claim(); 3238 if (HaveModules) { 3239 A->render(Args, CmdArgs); 3240 } 3241 } else if (HaveModules) { 3242 SmallString<128> DefaultModuleCache; 3243 llvm::sys::path::system_temp_directory(/*erasedOnReboot=*/false, 3244 DefaultModuleCache); 3245 llvm::sys::path::append(DefaultModuleCache, "org.llvm.clang"); 3246 llvm::sys::path::append(DefaultModuleCache, "ModuleCache"); 3247 const char Arg[] = "-fmodules-cache-path="; 3248 DefaultModuleCache.insert(DefaultModuleCache.begin(), 3249 Arg, Arg + strlen(Arg)); 3250 CmdArgs.push_back(Args.MakeArgString(DefaultModuleCache)); 3251 } 3252 3253 // Pass through all -fmodules-ignore-macro arguments. 3254 Args.AddAllArgs(CmdArgs, options::OPT_fmodules_ignore_macro); 3255 Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_interval); 3256 Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_after); 3257 3258 // -faccess-control is default. 3259 if (Args.hasFlag(options::OPT_fno_access_control, 3260 options::OPT_faccess_control, 3261 false)) 3262 CmdArgs.push_back("-fno-access-control"); 3263 3264 // -felide-constructors is the default. 3265 if (Args.hasFlag(options::OPT_fno_elide_constructors, 3266 options::OPT_felide_constructors, 3267 false)) 3268 CmdArgs.push_back("-fno-elide-constructors"); 3269 3270 // -frtti is default. 3271 if (!Args.hasFlag(options::OPT_frtti, options::OPT_fno_rtti) || 3272 KernelOrKext) { 3273 CmdArgs.push_back("-fno-rtti"); 3274 3275 // -fno-rtti cannot usefully be combined with -fsanitize=vptr. 3276 if (Sanitize.sanitizesVptr()) { 3277 std::string NoRttiArg = 3278 Args.getLastArg(options::OPT_mkernel, 3279 options::OPT_fapple_kext, 3280 options::OPT_fno_rtti)->getAsString(Args); 3281 D.Diag(diag::err_drv_argument_not_allowed_with) 3282 << "-fsanitize=vptr" << NoRttiArg; 3283 } 3284 } 3285 3286 // -fshort-enums=0 is default for all architectures except Hexagon. 3287 if (Args.hasFlag(options::OPT_fshort_enums, 3288 options::OPT_fno_short_enums, 3289 getToolChain().getArch() == 3290 llvm::Triple::hexagon)) 3291 CmdArgs.push_back("-fshort-enums"); 3292 3293 // -fsigned-char is default. 3294 if (!Args.hasFlag(options::OPT_fsigned_char, options::OPT_funsigned_char, 3295 isSignedCharDefault(getToolChain().getTriple()))) 3296 CmdArgs.push_back("-fno-signed-char"); 3297 3298 // -fthreadsafe-static is default. 3299 if (!Args.hasFlag(options::OPT_fthreadsafe_statics, 3300 options::OPT_fno_threadsafe_statics)) 3301 CmdArgs.push_back("-fno-threadsafe-statics"); 3302 3303 // -fuse-cxa-atexit is default. 3304 if (!Args.hasFlag( 3305 options::OPT_fuse_cxa_atexit, options::OPT_fno_use_cxa_atexit, 3306 getToolChain().getTriple().getOS() != llvm::Triple::Cygwin && 3307 getToolChain().getTriple().getOS() != llvm::Triple::MinGW32 && 3308 getToolChain().getArch() != llvm::Triple::hexagon && 3309 getToolChain().getArch() != llvm::Triple::xcore) || 3310 KernelOrKext) 3311 CmdArgs.push_back("-fno-use-cxa-atexit"); 3312 3313 // -fms-extensions=0 is default. 3314 if (Args.hasFlag(options::OPT_fms_extensions, options::OPT_fno_ms_extensions, 3315 getToolChain().getTriple().getOS() == llvm::Triple::Win32)) 3316 CmdArgs.push_back("-fms-extensions"); 3317 3318 // -fms-compatibility=0 is default. 3319 if (Args.hasFlag(options::OPT_fms_compatibility, 3320 options::OPT_fno_ms_compatibility, 3321 (getToolChain().getTriple().getOS() == llvm::Triple::Win32 && 3322 Args.hasFlag(options::OPT_fms_extensions, 3323 options::OPT_fno_ms_extensions, 3324 true)))) 3325 CmdArgs.push_back("-fms-compatibility"); 3326 3327 // -fmsc-version=1700 is default. 3328 if (Args.hasFlag(options::OPT_fms_extensions, options::OPT_fno_ms_extensions, 3329 getToolChain().getTriple().getOS() == llvm::Triple::Win32) || 3330 Args.hasArg(options::OPT_fmsc_version)) { 3331 StringRef msc_ver = Args.getLastArgValue(options::OPT_fmsc_version); 3332 if (msc_ver.empty()) 3333 CmdArgs.push_back("-fmsc-version=1700"); 3334 else 3335 CmdArgs.push_back(Args.MakeArgString("-fmsc-version=" + msc_ver)); 3336 } 3337 3338 3339 // -fno-borland-extensions is default. 3340 if (Args.hasFlag(options::OPT_fborland_extensions, 3341 options::OPT_fno_borland_extensions, false)) 3342 CmdArgs.push_back("-fborland-extensions"); 3343 3344 // -fno-delayed-template-parsing is default, except for Windows where MSVC STL 3345 // needs it. 3346 if (Args.hasFlag(options::OPT_fdelayed_template_parsing, 3347 options::OPT_fno_delayed_template_parsing, 3348 getToolChain().getTriple().getOS() == llvm::Triple::Win32)) 3349 CmdArgs.push_back("-fdelayed-template-parsing"); 3350 3351 // -fgnu-keywords default varies depending on language; only pass if 3352 // specified. 3353 if (Arg *A = Args.getLastArg(options::OPT_fgnu_keywords, 3354 options::OPT_fno_gnu_keywords)) 3355 A->render(Args, CmdArgs); 3356 3357 if (Args.hasFlag(options::OPT_fgnu89_inline, 3358 options::OPT_fno_gnu89_inline, 3359 false)) 3360 CmdArgs.push_back("-fgnu89-inline"); 3361 3362 if (Args.hasArg(options::OPT_fno_inline)) 3363 CmdArgs.push_back("-fno-inline"); 3364 3365 if (Args.hasArg(options::OPT_fno_inline_functions)) 3366 CmdArgs.push_back("-fno-inline-functions"); 3367 3368 ObjCRuntime objcRuntime = AddObjCRuntimeArgs(Args, CmdArgs, rewriteKind); 3369 3370 // -fobjc-dispatch-method is only relevant with the nonfragile-abi, and 3371 // legacy is the default. Next runtime is always legacy dispatch and 3372 // -fno-objc-legacy-dispatch gets ignored silently. 3373 if (objcRuntime.isNonFragile() && !objcRuntime.isNeXTFamily()) { 3374 if (!Args.hasFlag(options::OPT_fobjc_legacy_dispatch, 3375 options::OPT_fno_objc_legacy_dispatch, 3376 objcRuntime.isLegacyDispatchDefaultForArch( 3377 getToolChain().getArch()))) { 3378 if (getToolChain().UseObjCMixedDispatch()) 3379 CmdArgs.push_back("-fobjc-dispatch-method=mixed"); 3380 else 3381 CmdArgs.push_back("-fobjc-dispatch-method=non-legacy"); 3382 } 3383 } 3384 3385 // When ObjectiveC legacy runtime is in effect on MacOSX, 3386 // turn on the option to do Array/Dictionary subscripting 3387 // by default. 3388 if (getToolChain().getTriple().getArch() == llvm::Triple::x86 && 3389 getToolChain().getTriple().isMacOSX() && 3390 !getToolChain().getTriple().isMacOSXVersionLT(10, 7) && 3391 objcRuntime.getKind() == ObjCRuntime::FragileMacOSX && 3392 objcRuntime.isNeXTFamily()) 3393 CmdArgs.push_back("-fobjc-subscripting-legacy-runtime"); 3394 3395 // -fencode-extended-block-signature=1 is default. 3396 if (getToolChain().IsEncodeExtendedBlockSignatureDefault()) { 3397 CmdArgs.push_back("-fencode-extended-block-signature"); 3398 } 3399 3400 // Allow -fno-objc-arr to trump -fobjc-arr/-fobjc-arc. 3401 // NOTE: This logic is duplicated in ToolChains.cpp. 3402 bool ARC = isObjCAutoRefCount(Args); 3403 if (ARC) { 3404 getToolChain().CheckObjCARC(); 3405 3406 CmdArgs.push_back("-fobjc-arc"); 3407 3408 // FIXME: It seems like this entire block, and several around it should be 3409 // wrapped in isObjC, but for now we just use it here as this is where it 3410 // was being used previously. 3411 if (types::isCXX(InputType) && types::isObjC(InputType)) { 3412 if (getToolChain().GetCXXStdlibType(Args) == ToolChain::CST_Libcxx) 3413 CmdArgs.push_back("-fobjc-arc-cxxlib=libc++"); 3414 else 3415 CmdArgs.push_back("-fobjc-arc-cxxlib=libstdc++"); 3416 } 3417 3418 // Allow the user to enable full exceptions code emission. 3419 // We define off for Objective-CC, on for Objective-C++. 3420 if (Args.hasFlag(options::OPT_fobjc_arc_exceptions, 3421 options::OPT_fno_objc_arc_exceptions, 3422 /*default*/ types::isCXX(InputType))) 3423 CmdArgs.push_back("-fobjc-arc-exceptions"); 3424 } 3425 3426 // -fobjc-infer-related-result-type is the default, except in the Objective-C 3427 // rewriter. 3428 if (rewriteKind != RK_None) 3429 CmdArgs.push_back("-fno-objc-infer-related-result-type"); 3430 3431 // Handle -fobjc-gc and -fobjc-gc-only. They are exclusive, and -fobjc-gc-only 3432 // takes precedence. 3433 const Arg *GCArg = Args.getLastArg(options::OPT_fobjc_gc_only); 3434 if (!GCArg) 3435 GCArg = Args.getLastArg(options::OPT_fobjc_gc); 3436 if (GCArg) { 3437 if (ARC) { 3438 D.Diag(diag::err_drv_objc_gc_arr) 3439 << GCArg->getAsString(Args); 3440 } else if (getToolChain().SupportsObjCGC()) { 3441 GCArg->render(Args, CmdArgs); 3442 } else { 3443 // FIXME: We should move this to a hard error. 3444 D.Diag(diag::warn_drv_objc_gc_unsupported) 3445 << GCArg->getAsString(Args); 3446 } 3447 } 3448 3449 // Add exception args. 3450 addExceptionArgs(Args, InputType, getToolChain().getTriple(), 3451 KernelOrKext, objcRuntime, CmdArgs); 3452 3453 if (getToolChain().UseSjLjExceptions()) 3454 CmdArgs.push_back("-fsjlj-exceptions"); 3455 3456 // C++ "sane" operator new. 3457 if (!Args.hasFlag(options::OPT_fassume_sane_operator_new, 3458 options::OPT_fno_assume_sane_operator_new)) 3459 CmdArgs.push_back("-fno-assume-sane-operator-new"); 3460 3461 // -fconstant-cfstrings is default, and may be subject to argument translation 3462 // on Darwin. 3463 if (!Args.hasFlag(options::OPT_fconstant_cfstrings, 3464 options::OPT_fno_constant_cfstrings) || 3465 !Args.hasFlag(options::OPT_mconstant_cfstrings, 3466 options::OPT_mno_constant_cfstrings)) 3467 CmdArgs.push_back("-fno-constant-cfstrings"); 3468 3469 // -fshort-wchar default varies depending on platform; only 3470 // pass if specified. 3471 if (Arg *A = Args.getLastArg(options::OPT_fshort_wchar)) 3472 A->render(Args, CmdArgs); 3473 3474 // -fno-pascal-strings is default, only pass non-default. 3475 if (Args.hasFlag(options::OPT_fpascal_strings, 3476 options::OPT_fno_pascal_strings, 3477 false)) 3478 CmdArgs.push_back("-fpascal-strings"); 3479 3480 // Honor -fpack-struct= and -fpack-struct, if given. Note that 3481 // -fno-pack-struct doesn't apply to -fpack-struct=. 3482 if (Arg *A = Args.getLastArg(options::OPT_fpack_struct_EQ)) { 3483 std::string PackStructStr = "-fpack-struct="; 3484 PackStructStr += A->getValue(); 3485 CmdArgs.push_back(Args.MakeArgString(PackStructStr)); 3486 } else if (Args.hasFlag(options::OPT_fpack_struct, 3487 options::OPT_fno_pack_struct, false)) { 3488 CmdArgs.push_back("-fpack-struct=1"); 3489 } 3490 3491 if (KernelOrKext || isNoCommonDefault(getToolChain().getTriple())) { 3492 if (!Args.hasArg(options::OPT_fcommon)) 3493 CmdArgs.push_back("-fno-common"); 3494 Args.ClaimAllArgs(options::OPT_fno_common); 3495 } 3496 3497 // -fcommon is default, only pass non-default. 3498 else if (!Args.hasFlag(options::OPT_fcommon, options::OPT_fno_common)) 3499 CmdArgs.push_back("-fno-common"); 3500 3501 // -fsigned-bitfields is default, and clang doesn't yet support 3502 // -funsigned-bitfields. 3503 if (!Args.hasFlag(options::OPT_fsigned_bitfields, 3504 options::OPT_funsigned_bitfields)) 3505 D.Diag(diag::warn_drv_clang_unsupported) 3506 << Args.getLastArg(options::OPT_funsigned_bitfields)->getAsString(Args); 3507 3508 // -fsigned-bitfields is default, and clang doesn't support -fno-for-scope. 3509 if (!Args.hasFlag(options::OPT_ffor_scope, 3510 options::OPT_fno_for_scope)) 3511 D.Diag(diag::err_drv_clang_unsupported) 3512 << Args.getLastArg(options::OPT_fno_for_scope)->getAsString(Args); 3513 3514 // -fcaret-diagnostics is default. 3515 if (!Args.hasFlag(options::OPT_fcaret_diagnostics, 3516 options::OPT_fno_caret_diagnostics, true)) 3517 CmdArgs.push_back("-fno-caret-diagnostics"); 3518 3519 // -fdiagnostics-fixit-info is default, only pass non-default. 3520 if (!Args.hasFlag(options::OPT_fdiagnostics_fixit_info, 3521 options::OPT_fno_diagnostics_fixit_info)) 3522 CmdArgs.push_back("-fno-diagnostics-fixit-info"); 3523 3524 // Enable -fdiagnostics-show-option by default. 3525 if (Args.hasFlag(options::OPT_fdiagnostics_show_option, 3526 options::OPT_fno_diagnostics_show_option)) 3527 CmdArgs.push_back("-fdiagnostics-show-option"); 3528 3529 if (const Arg *A = 3530 Args.getLastArg(options::OPT_fdiagnostics_show_category_EQ)) { 3531 CmdArgs.push_back("-fdiagnostics-show-category"); 3532 CmdArgs.push_back(A->getValue()); 3533 } 3534 3535 if (const Arg *A = 3536 Args.getLastArg(options::OPT_fdiagnostics_format_EQ)) { 3537 CmdArgs.push_back("-fdiagnostics-format"); 3538 CmdArgs.push_back(A->getValue()); 3539 } 3540 3541 if (Arg *A = Args.getLastArg( 3542 options::OPT_fdiagnostics_show_note_include_stack, 3543 options::OPT_fno_diagnostics_show_note_include_stack)) { 3544 if (A->getOption().matches( 3545 options::OPT_fdiagnostics_show_note_include_stack)) 3546 CmdArgs.push_back("-fdiagnostics-show-note-include-stack"); 3547 else 3548 CmdArgs.push_back("-fno-diagnostics-show-note-include-stack"); 3549 } 3550 3551 // Color diagnostics are the default, unless the terminal doesn't support 3552 // them. 3553 // Support both clang's -f[no-]color-diagnostics and gcc's 3554 // -f[no-]diagnostics-colors[=never|always|auto]. 3555 enum { Colors_On, Colors_Off, Colors_Auto } ShowColors = Colors_Auto; 3556 for (ArgList::const_iterator it = Args.begin(), ie = Args.end(); 3557 it != ie; ++it) { 3558 const Option &O = (*it)->getOption(); 3559 if (!O.matches(options::OPT_fcolor_diagnostics) && 3560 !O.matches(options::OPT_fdiagnostics_color) && 3561 !O.matches(options::OPT_fno_color_diagnostics) && 3562 !O.matches(options::OPT_fno_diagnostics_color) && 3563 !O.matches(options::OPT_fdiagnostics_color_EQ)) 3564 continue; 3565 3566 (*it)->claim(); 3567 if (O.matches(options::OPT_fcolor_diagnostics) || 3568 O.matches(options::OPT_fdiagnostics_color)) { 3569 ShowColors = Colors_On; 3570 } else if (O.matches(options::OPT_fno_color_diagnostics) || 3571 O.matches(options::OPT_fno_diagnostics_color)) { 3572 ShowColors = Colors_Off; 3573 } else { 3574 assert(O.matches(options::OPT_fdiagnostics_color_EQ)); 3575 StringRef value((*it)->getValue()); 3576 if (value == "always") 3577 ShowColors = Colors_On; 3578 else if (value == "never") 3579 ShowColors = Colors_Off; 3580 else if (value == "auto") 3581 ShowColors = Colors_Auto; 3582 else 3583 getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported) 3584 << ("-fdiagnostics-color=" + value).str(); 3585 } 3586 } 3587 if (ShowColors == Colors_On || 3588 (ShowColors == Colors_Auto && llvm::sys::Process::StandardErrHasColors())) 3589 CmdArgs.push_back("-fcolor-diagnostics"); 3590 3591 if (Args.hasArg(options::OPT_fansi_escape_codes)) 3592 CmdArgs.push_back("-fansi-escape-codes"); 3593 3594 if (!Args.hasFlag(options::OPT_fshow_source_location, 3595 options::OPT_fno_show_source_location)) 3596 CmdArgs.push_back("-fno-show-source-location"); 3597 3598 if (!Args.hasFlag(options::OPT_fshow_column, 3599 options::OPT_fno_show_column, 3600 true)) 3601 CmdArgs.push_back("-fno-show-column"); 3602 3603 if (!Args.hasFlag(options::OPT_fspell_checking, 3604 options::OPT_fno_spell_checking)) 3605 CmdArgs.push_back("-fno-spell-checking"); 3606 3607 3608 // -fno-asm-blocks is default. 3609 if (Args.hasFlag(options::OPT_fasm_blocks, options::OPT_fno_asm_blocks, 3610 false)) 3611 CmdArgs.push_back("-fasm-blocks"); 3612 3613 // Enable vectorization per default according to the optimization level 3614 // selected. For optimization levels that want vectorization we use the alias 3615 // option to simplify the hasFlag logic. 3616 bool EnableVec = shouldEnableVectorizerAtOLevel(Args); 3617 OptSpecifier VectorizeAliasOption = EnableVec ? options::OPT_O_Group : 3618 options::OPT_fvectorize; 3619 if (Args.hasFlag(options::OPT_fvectorize, VectorizeAliasOption, 3620 options::OPT_fno_vectorize, EnableVec)) 3621 CmdArgs.push_back("-vectorize-loops"); 3622 3623 // -fslp-vectorize is default. 3624 if (Args.hasFlag(options::OPT_fslp_vectorize, 3625 options::OPT_fno_slp_vectorize, true)) 3626 CmdArgs.push_back("-vectorize-slp"); 3627 3628 // -fno-slp-vectorize-aggressive is default. 3629 if (Args.hasFlag(options::OPT_fslp_vectorize_aggressive, 3630 options::OPT_fno_slp_vectorize_aggressive, false)) 3631 CmdArgs.push_back("-vectorize-slp-aggressive"); 3632 3633 if (Arg *A = Args.getLastArg(options::OPT_fshow_overloads_EQ)) 3634 A->render(Args, CmdArgs); 3635 3636 // -fdollars-in-identifiers default varies depending on platform and 3637 // language; only pass if specified. 3638 if (Arg *A = Args.getLastArg(options::OPT_fdollars_in_identifiers, 3639 options::OPT_fno_dollars_in_identifiers)) { 3640 if (A->getOption().matches(options::OPT_fdollars_in_identifiers)) 3641 CmdArgs.push_back("-fdollars-in-identifiers"); 3642 else 3643 CmdArgs.push_back("-fno-dollars-in-identifiers"); 3644 } 3645 3646 // -funit-at-a-time is default, and we don't support -fno-unit-at-a-time for 3647 // practical purposes. 3648 if (Arg *A = Args.getLastArg(options::OPT_funit_at_a_time, 3649 options::OPT_fno_unit_at_a_time)) { 3650 if (A->getOption().matches(options::OPT_fno_unit_at_a_time)) 3651 D.Diag(diag::warn_drv_clang_unsupported) << A->getAsString(Args); 3652 } 3653 3654 if (Args.hasFlag(options::OPT_fapple_pragma_pack, 3655 options::OPT_fno_apple_pragma_pack, false)) 3656 CmdArgs.push_back("-fapple-pragma-pack"); 3657 3658 // le32-specific flags: 3659 // -fno-math-builtin: clang should not convert math builtins to intrinsics 3660 // by default. 3661 if (getToolChain().getArch() == llvm::Triple::le32) { 3662 CmdArgs.push_back("-fno-math-builtin"); 3663 } 3664 3665 // Default to -fno-builtin-str{cat,cpy} on Darwin for ARM. 3666 // 3667 // FIXME: This is disabled until clang -cc1 supports -fno-builtin-foo. PR4941. 3668#if 0 3669 if (getToolChain().getTriple().isOSDarwin() && 3670 (getToolChain().getArch() == llvm::Triple::arm || 3671 getToolChain().getArch() == llvm::Triple::thumb)) { 3672 if (!Args.hasArg(options::OPT_fbuiltin_strcat)) 3673 CmdArgs.push_back("-fno-builtin-strcat"); 3674 if (!Args.hasArg(options::OPT_fbuiltin_strcpy)) 3675 CmdArgs.push_back("-fno-builtin-strcpy"); 3676 } 3677#endif 3678 3679 // Only allow -traditional or -traditional-cpp outside in preprocessing modes. 3680 if (Arg *A = Args.getLastArg(options::OPT_traditional, 3681 options::OPT_traditional_cpp)) { 3682 if (isa<PreprocessJobAction>(JA)) 3683 CmdArgs.push_back("-traditional-cpp"); 3684 else 3685 D.Diag(diag::err_drv_clang_unsupported) << A->getAsString(Args); 3686 } 3687 3688 Args.AddLastArg(CmdArgs, options::OPT_dM); 3689 Args.AddLastArg(CmdArgs, options::OPT_dD); 3690 3691 // Handle serialized diagnostics. 3692 if (Arg *A = Args.getLastArg(options::OPT__serialize_diags)) { 3693 CmdArgs.push_back("-serialize-diagnostic-file"); 3694 CmdArgs.push_back(Args.MakeArgString(A->getValue())); 3695 } 3696 3697 if (Args.hasArg(options::OPT_fretain_comments_from_system_headers)) 3698 CmdArgs.push_back("-fretain-comments-from-system-headers"); 3699 3700 // Forward -fcomment-block-commands to -cc1. 3701 Args.AddAllArgs(CmdArgs, options::OPT_fcomment_block_commands); 3702 // Forward -fparse-all-comments to -cc1. 3703 Args.AddAllArgs(CmdArgs, options::OPT_fparse_all_comments); 3704 3705 // Forward -Xclang arguments to -cc1, and -mllvm arguments to the LLVM option 3706 // parser. 3707 Args.AddAllArgValues(CmdArgs, options::OPT_Xclang); 3708 for (arg_iterator it = Args.filtered_begin(options::OPT_mllvm), 3709 ie = Args.filtered_end(); it != ie; ++it) { 3710 (*it)->claim(); 3711 3712 // We translate this by hand to the -cc1 argument, since nightly test uses 3713 // it and developers have been trained to spell it with -mllvm. 3714 if (StringRef((*it)->getValue(0)) == "-disable-llvm-optzns") 3715 CmdArgs.push_back("-disable-llvm-optzns"); 3716 else 3717 (*it)->render(Args, CmdArgs); 3718 } 3719 3720 if (Output.getType() == types::TY_Dependencies) { 3721 // Handled with other dependency code. 3722 } else if (Output.isFilename()) { 3723 CmdArgs.push_back("-o"); 3724 CmdArgs.push_back(Output.getFilename()); 3725 } else { 3726 assert(Output.isNothing() && "Invalid output."); 3727 } 3728 3729 for (InputInfoList::const_iterator 3730 it = Inputs.begin(), ie = Inputs.end(); it != ie; ++it) { 3731 const InputInfo &II = *it; 3732 CmdArgs.push_back("-x"); 3733 if (Args.hasArg(options::OPT_rewrite_objc)) 3734 CmdArgs.push_back(types::getTypeName(types::TY_PP_ObjCXX)); 3735 else 3736 CmdArgs.push_back(types::getTypeName(II.getType())); 3737 if (II.isFilename()) 3738 CmdArgs.push_back(II.getFilename()); 3739 else 3740 II.getInputArg().renderAsInput(Args, CmdArgs); 3741 } 3742 3743 Args.AddAllArgs(CmdArgs, options::OPT_undef); 3744 3745 const char *Exec = getToolChain().getDriver().getClangProgramPath(); 3746 3747 // Optionally embed the -cc1 level arguments into the debug info, for build 3748 // analysis. 3749 if (getToolChain().UseDwarfDebugFlags()) { 3750 ArgStringList OriginalArgs; 3751 for (ArgList::const_iterator it = Args.begin(), 3752 ie = Args.end(); it != ie; ++it) 3753 (*it)->render(Args, OriginalArgs); 3754 3755 SmallString<256> Flags; 3756 Flags += Exec; 3757 for (unsigned i = 0, e = OriginalArgs.size(); i != e; ++i) { 3758 Flags += " "; 3759 Flags += OriginalArgs[i]; 3760 } 3761 CmdArgs.push_back("-dwarf-debug-flags"); 3762 CmdArgs.push_back(Args.MakeArgString(Flags.str())); 3763 } 3764 3765 // Add the split debug info name to the command lines here so we 3766 // can propagate it to the backend. 3767 bool SplitDwarf = Args.hasArg(options::OPT_gsplit_dwarf) && 3768 getToolChain().getTriple().isOSLinux() && 3769 (isa<AssembleJobAction>(JA) || isa<CompileJobAction>(JA)); 3770 const char *SplitDwarfOut; 3771 if (SplitDwarf) { 3772 CmdArgs.push_back("-split-dwarf-file"); 3773 SplitDwarfOut = SplitDebugName(Args, Inputs); 3774 CmdArgs.push_back(SplitDwarfOut); 3775 } 3776 3777 // Finally add the compile command to the compilation. 3778 if (Args.hasArg(options::OPT__SLASH_fallback)) { 3779 tools::visualstudio::Compile CL(getToolChain()); 3780 Command *CLCommand = CL.GetCommand(C, JA, Output, Inputs, Args, 3781 LinkingOutput); 3782 C.addCommand(new FallbackCommand(JA, *this, Exec, CmdArgs, CLCommand)); 3783 } else { 3784 C.addCommand(new Command(JA, *this, Exec, CmdArgs)); 3785 } 3786 3787 3788 // Handle the debug info splitting at object creation time if we're 3789 // creating an object. 3790 // TODO: Currently only works on linux with newer objcopy. 3791 if (SplitDwarf && !isa<CompileJobAction>(JA)) 3792 SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output, SplitDwarfOut); 3793 3794 if (Arg *A = Args.getLastArg(options::OPT_pg)) 3795 if (Args.hasArg(options::OPT_fomit_frame_pointer)) 3796 D.Diag(diag::err_drv_argument_not_allowed_with) 3797 << "-fomit-frame-pointer" << A->getAsString(Args); 3798 3799 // Claim some arguments which clang supports automatically. 3800 3801 // -fpch-preprocess is used with gcc to add a special marker in the output to 3802 // include the PCH file. Clang's PTH solution is completely transparent, so we 3803 // do not need to deal with it at all. 3804 Args.ClaimAllArgs(options::OPT_fpch_preprocess); 3805 3806 // Claim some arguments which clang doesn't support, but we don't 3807 // care to warn the user about. 3808 Args.ClaimAllArgs(options::OPT_clang_ignored_f_Group); 3809 Args.ClaimAllArgs(options::OPT_clang_ignored_m_Group); 3810 3811 // Disable warnings for clang -E -emit-llvm foo.c 3812 Args.ClaimAllArgs(options::OPT_emit_llvm); 3813} 3814 3815/// Add options related to the Objective-C runtime/ABI. 3816/// 3817/// Returns true if the runtime is non-fragile. 3818ObjCRuntime Clang::AddObjCRuntimeArgs(const ArgList &args, 3819 ArgStringList &cmdArgs, 3820 RewriteKind rewriteKind) const { 3821 // Look for the controlling runtime option. 3822 Arg *runtimeArg = args.getLastArg(options::OPT_fnext_runtime, 3823 options::OPT_fgnu_runtime, 3824 options::OPT_fobjc_runtime_EQ); 3825 3826 // Just forward -fobjc-runtime= to the frontend. This supercedes 3827 // options about fragility. 3828 if (runtimeArg && 3829 runtimeArg->getOption().matches(options::OPT_fobjc_runtime_EQ)) { 3830 ObjCRuntime runtime; 3831 StringRef value = runtimeArg->getValue(); 3832 if (runtime.tryParse(value)) { 3833 getToolChain().getDriver().Diag(diag::err_drv_unknown_objc_runtime) 3834 << value; 3835 } 3836 3837 runtimeArg->render(args, cmdArgs); 3838 return runtime; 3839 } 3840 3841 // Otherwise, we'll need the ABI "version". Version numbers are 3842 // slightly confusing for historical reasons: 3843 // 1 - Traditional "fragile" ABI 3844 // 2 - Non-fragile ABI, version 1 3845 // 3 - Non-fragile ABI, version 2 3846 unsigned objcABIVersion = 1; 3847 // If -fobjc-abi-version= is present, use that to set the version. 3848 if (Arg *abiArg = args.getLastArg(options::OPT_fobjc_abi_version_EQ)) { 3849 StringRef value = abiArg->getValue(); 3850 if (value == "1") 3851 objcABIVersion = 1; 3852 else if (value == "2") 3853 objcABIVersion = 2; 3854 else if (value == "3") 3855 objcABIVersion = 3; 3856 else 3857 getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported) 3858 << value; 3859 } else { 3860 // Otherwise, determine if we are using the non-fragile ABI. 3861 bool nonFragileABIIsDefault = 3862 (rewriteKind == RK_NonFragile || 3863 (rewriteKind == RK_None && 3864 getToolChain().IsObjCNonFragileABIDefault())); 3865 if (args.hasFlag(options::OPT_fobjc_nonfragile_abi, 3866 options::OPT_fno_objc_nonfragile_abi, 3867 nonFragileABIIsDefault)) { 3868 // Determine the non-fragile ABI version to use. 3869#ifdef DISABLE_DEFAULT_NONFRAGILEABI_TWO 3870 unsigned nonFragileABIVersion = 1; 3871#else 3872 unsigned nonFragileABIVersion = 2; 3873#endif 3874 3875 if (Arg *abiArg = args.getLastArg( 3876 options::OPT_fobjc_nonfragile_abi_version_EQ)) { 3877 StringRef value = abiArg->getValue(); 3878 if (value == "1") 3879 nonFragileABIVersion = 1; 3880 else if (value == "2") 3881 nonFragileABIVersion = 2; 3882 else 3883 getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported) 3884 << value; 3885 } 3886 3887 objcABIVersion = 1 + nonFragileABIVersion; 3888 } else { 3889 objcABIVersion = 1; 3890 } 3891 } 3892 3893 // We don't actually care about the ABI version other than whether 3894 // it's non-fragile. 3895 bool isNonFragile = objcABIVersion != 1; 3896 3897 // If we have no runtime argument, ask the toolchain for its default runtime. 3898 // However, the rewriter only really supports the Mac runtime, so assume that. 3899 ObjCRuntime runtime; 3900 if (!runtimeArg) { 3901 switch (rewriteKind) { 3902 case RK_None: 3903 runtime = getToolChain().getDefaultObjCRuntime(isNonFragile); 3904 break; 3905 case RK_Fragile: 3906 runtime = ObjCRuntime(ObjCRuntime::FragileMacOSX, VersionTuple()); 3907 break; 3908 case RK_NonFragile: 3909 runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple()); 3910 break; 3911 } 3912 3913 // -fnext-runtime 3914 } else if (runtimeArg->getOption().matches(options::OPT_fnext_runtime)) { 3915 // On Darwin, make this use the default behavior for the toolchain. 3916 if (getToolChain().getTriple().isOSDarwin()) { 3917 runtime = getToolChain().getDefaultObjCRuntime(isNonFragile); 3918 3919 // Otherwise, build for a generic macosx port. 3920 } else { 3921 runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple()); 3922 } 3923 3924 // -fgnu-runtime 3925 } else { 3926 assert(runtimeArg->getOption().matches(options::OPT_fgnu_runtime)); 3927 // Legacy behaviour is to target the gnustep runtime if we are i 3928 // non-fragile mode or the GCC runtime in fragile mode. 3929 if (isNonFragile) 3930 runtime = ObjCRuntime(ObjCRuntime::GNUstep, VersionTuple(1,6)); 3931 else 3932 runtime = ObjCRuntime(ObjCRuntime::GCC, VersionTuple()); 3933 } 3934 3935 cmdArgs.push_back(args.MakeArgString( 3936 "-fobjc-runtime=" + runtime.getAsString())); 3937 return runtime; 3938} 3939 3940void Clang::AddClangCLArgs(const ArgList &Args, ArgStringList &CmdArgs) const { 3941 unsigned RTOptionID = options::OPT__SLASH_MT; 3942 3943 if (Args.hasArg(options::OPT__SLASH_LDd)) 3944 // The /LDd option implies /MTd. The dependent lib part can be overridden, 3945 // but defining _DEBUG is sticky. 3946 RTOptionID = options::OPT__SLASH_MTd; 3947 3948 if (Arg *A = Args.getLastArg(options::OPT__SLASH_M_Group)) 3949 RTOptionID = A->getOption().getID(); 3950 3951 switch(RTOptionID) { 3952 case options::OPT__SLASH_MD: 3953 if (Args.hasArg(options::OPT__SLASH_LDd)) 3954 CmdArgs.push_back("-D_DEBUG"); 3955 CmdArgs.push_back("-D_MT"); 3956 CmdArgs.push_back("-D_DLL"); 3957 CmdArgs.push_back("--dependent-lib=msvcrt"); 3958 break; 3959 case options::OPT__SLASH_MDd: 3960 CmdArgs.push_back("-D_DEBUG"); 3961 CmdArgs.push_back("-D_MT"); 3962 CmdArgs.push_back("-D_DLL"); 3963 CmdArgs.push_back("--dependent-lib=msvcrtd"); 3964 break; 3965 case options::OPT__SLASH_MT: 3966 if (Args.hasArg(options::OPT__SLASH_LDd)) 3967 CmdArgs.push_back("-D_DEBUG"); 3968 CmdArgs.push_back("-D_MT"); 3969 CmdArgs.push_back("--dependent-lib=libcmt"); 3970 break; 3971 case options::OPT__SLASH_MTd: 3972 CmdArgs.push_back("-D_DEBUG"); 3973 CmdArgs.push_back("-D_MT"); 3974 CmdArgs.push_back("--dependent-lib=libcmtd"); 3975 break; 3976 default: 3977 llvm_unreachable("Unexpected option ID."); 3978 } 3979 3980 // This provides POSIX compatibility (maps 'open' to '_open'), which most 3981 // users want. The /Za flag to cl.exe turns this off, but it's not 3982 // implemented in clang. 3983 CmdArgs.push_back("--dependent-lib=oldnames"); 3984 3985 // FIXME: Make this default for the win32 triple. 3986 CmdArgs.push_back("-cxx-abi"); 3987 CmdArgs.push_back("microsoft"); 3988 3989 if (Arg *A = Args.getLastArg(options::OPT_show_includes)) 3990 A->render(Args, CmdArgs); 3991 3992 if (!Args.hasArg(options::OPT_fdiagnostics_format_EQ)) { 3993 CmdArgs.push_back("-fdiagnostics-format"); 3994 if (Args.hasArg(options::OPT__SLASH_fallback)) 3995 CmdArgs.push_back("msvc-fallback"); 3996 else 3997 CmdArgs.push_back("msvc"); 3998 } 3999} 4000 4001void ClangAs::ConstructJob(Compilation &C, const JobAction &JA, 4002 const InputInfo &Output, 4003 const InputInfoList &Inputs, 4004 const ArgList &Args, 4005 const char *LinkingOutput) const { 4006 ArgStringList CmdArgs; 4007 4008 assert(Inputs.size() == 1 && "Unexpected number of inputs."); 4009 const InputInfo &Input = Inputs[0]; 4010 4011 // Don't warn about "clang -w -c foo.s" 4012 Args.ClaimAllArgs(options::OPT_w); 4013 // and "clang -emit-llvm -c foo.s" 4014 Args.ClaimAllArgs(options::OPT_emit_llvm); 4015 4016 // Invoke ourselves in -cc1as mode. 4017 // 4018 // FIXME: Implement custom jobs for internal actions. 4019 CmdArgs.push_back("-cc1as"); 4020 4021 // Add the "effective" target triple. 4022 CmdArgs.push_back("-triple"); 4023 std::string TripleStr = 4024 getToolChain().ComputeEffectiveClangTriple(Args, Input.getType()); 4025 CmdArgs.push_back(Args.MakeArgString(TripleStr)); 4026 4027 // Set the output mode, we currently only expect to be used as a real 4028 // assembler. 4029 CmdArgs.push_back("-filetype"); 4030 CmdArgs.push_back("obj"); 4031 4032 // Set the main file name, so that debug info works even with 4033 // -save-temps or preprocessed assembly. 4034 CmdArgs.push_back("-main-file-name"); 4035 CmdArgs.push_back(Clang::getBaseInputName(Args, Inputs)); 4036 4037 // Add the target cpu 4038 const llvm::Triple &Triple = getToolChain().getTriple(); 4039 std::string CPU = getCPUName(Args, Triple); 4040 if (!CPU.empty()) { 4041 CmdArgs.push_back("-target-cpu"); 4042 CmdArgs.push_back(Args.MakeArgString(CPU)); 4043 } 4044 4045 // Add the target features 4046 const Driver &D = getToolChain().getDriver(); 4047 getTargetFeatures(D, Triple, Args, CmdArgs); 4048 4049 // Ignore explicit -force_cpusubtype_ALL option. 4050 (void) Args.hasArg(options::OPT_force__cpusubtype__ALL); 4051 4052 // Determine the original source input. 4053 const Action *SourceAction = &JA; 4054 while (SourceAction->getKind() != Action::InputClass) { 4055 assert(!SourceAction->getInputs().empty() && "unexpected root action!"); 4056 SourceAction = SourceAction->getInputs()[0]; 4057 } 4058 4059 // Forward -g and handle debug info related flags, assuming we are dealing 4060 // with an actual assembly file. 4061 if (SourceAction->getType() == types::TY_Asm || 4062 SourceAction->getType() == types::TY_PP_Asm) { 4063 Args.ClaimAllArgs(options::OPT_g_Group); 4064 if (Arg *A = Args.getLastArg(options::OPT_g_Group)) 4065 if (!A->getOption().matches(options::OPT_g0)) 4066 CmdArgs.push_back("-g"); 4067 4068 // Add the -fdebug-compilation-dir flag if needed. 4069 addDebugCompDirArg(Args, CmdArgs); 4070 4071 // Set the AT_producer to the clang version when using the integrated 4072 // assembler on assembly source files. 4073 CmdArgs.push_back("-dwarf-debug-producer"); 4074 CmdArgs.push_back(Args.MakeArgString(getClangFullVersion())); 4075 } 4076 4077 // Optionally embed the -cc1as level arguments into the debug info, for build 4078 // analysis. 4079 if (getToolChain().UseDwarfDebugFlags()) { 4080 ArgStringList OriginalArgs; 4081 for (ArgList::const_iterator it = Args.begin(), 4082 ie = Args.end(); it != ie; ++it) 4083 (*it)->render(Args, OriginalArgs); 4084 4085 SmallString<256> Flags; 4086 const char *Exec = getToolChain().getDriver().getClangProgramPath(); 4087 Flags += Exec; 4088 for (unsigned i = 0, e = OriginalArgs.size(); i != e; ++i) { 4089 Flags += " "; 4090 Flags += OriginalArgs[i]; 4091 } 4092 CmdArgs.push_back("-dwarf-debug-flags"); 4093 CmdArgs.push_back(Args.MakeArgString(Flags.str())); 4094 } 4095 4096 // FIXME: Add -static support, once we have it. 4097 4098 CollectArgsForIntegratedAssembler(C, Args, CmdArgs, 4099 getToolChain().getDriver()); 4100 4101 Args.AddAllArgs(CmdArgs, options::OPT_mllvm); 4102 4103 assert(Output.isFilename() && "Unexpected lipo output."); 4104 CmdArgs.push_back("-o"); 4105 CmdArgs.push_back(Output.getFilename()); 4106 4107 assert(Input.isFilename() && "Invalid input."); 4108 CmdArgs.push_back(Input.getFilename()); 4109 4110 const char *Exec = getToolChain().getDriver().getClangProgramPath(); 4111 C.addCommand(new Command(JA, *this, Exec, CmdArgs)); 4112 4113 // Handle the debug info splitting at object creation time if we're 4114 // creating an object. 4115 // TODO: Currently only works on linux with newer objcopy. 4116 if (Args.hasArg(options::OPT_gsplit_dwarf) && 4117 getToolChain().getTriple().isOSLinux()) 4118 SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output, 4119 SplitDebugName(Args, Inputs)); 4120} 4121 4122void gcc::Common::ConstructJob(Compilation &C, const JobAction &JA, 4123 const InputInfo &Output, 4124 const InputInfoList &Inputs, 4125 const ArgList &Args, 4126 const char *LinkingOutput) const { 4127 const Driver &D = getToolChain().getDriver(); 4128 ArgStringList CmdArgs; 4129 4130 for (ArgList::const_iterator 4131 it = Args.begin(), ie = Args.end(); it != ie; ++it) { 4132 Arg *A = *it; 4133 if (forwardToGCC(A->getOption())) { 4134 // Don't forward any -g arguments to assembly steps. 4135 if (isa<AssembleJobAction>(JA) && 4136 A->getOption().matches(options::OPT_g_Group)) 4137 continue; 4138 4139 // Don't forward any -W arguments to assembly and link steps. 4140 if ((isa<AssembleJobAction>(JA) || isa<LinkJobAction>(JA)) && 4141 A->getOption().matches(options::OPT_W_Group)) 4142 continue; 4143 4144 // It is unfortunate that we have to claim here, as this means 4145 // we will basically never report anything interesting for 4146 // platforms using a generic gcc, even if we are just using gcc 4147 // to get to the assembler. 4148 A->claim(); 4149 A->render(Args, CmdArgs); 4150 } 4151 } 4152 4153 RenderExtraToolArgs(JA, CmdArgs); 4154 4155 // If using a driver driver, force the arch. 4156 llvm::Triple::ArchType Arch = getToolChain().getArch(); 4157 if (getToolChain().getTriple().isOSDarwin()) { 4158 CmdArgs.push_back("-arch"); 4159 4160 // FIXME: Remove these special cases. 4161 if (Arch == llvm::Triple::ppc) 4162 CmdArgs.push_back("ppc"); 4163 else if (Arch == llvm::Triple::ppc64) 4164 CmdArgs.push_back("ppc64"); 4165 else if (Arch == llvm::Triple::ppc64le) 4166 CmdArgs.push_back("ppc64le"); 4167 else 4168 CmdArgs.push_back(Args.MakeArgString(getToolChain().getArchName())); 4169 } 4170 4171 // Try to force gcc to match the tool chain we want, if we recognize 4172 // the arch. 4173 // 4174 // FIXME: The triple class should directly provide the information we want 4175 // here. 4176 if (Arch == llvm::Triple::x86 || Arch == llvm::Triple::ppc) 4177 CmdArgs.push_back("-m32"); 4178 else if (Arch == llvm::Triple::x86_64 || Arch == llvm::Triple::ppc64 || 4179 Arch == llvm::Triple::ppc64le) 4180 CmdArgs.push_back("-m64"); 4181 4182 if (Output.isFilename()) { 4183 CmdArgs.push_back("-o"); 4184 CmdArgs.push_back(Output.getFilename()); 4185 } else { 4186 assert(Output.isNothing() && "Unexpected output"); 4187 CmdArgs.push_back("-fsyntax-only"); 4188 } 4189 4190 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, 4191 options::OPT_Xassembler); 4192 4193 // Only pass -x if gcc will understand it; otherwise hope gcc 4194 // understands the suffix correctly. The main use case this would go 4195 // wrong in is for linker inputs if they happened to have an odd 4196 // suffix; really the only way to get this to happen is a command 4197 // like '-x foobar a.c' which will treat a.c like a linker input. 4198 // 4199 // FIXME: For the linker case specifically, can we safely convert 4200 // inputs into '-Wl,' options? 4201 for (InputInfoList::const_iterator 4202 it = Inputs.begin(), ie = Inputs.end(); it != ie; ++it) { 4203 const InputInfo &II = *it; 4204 4205 // Don't try to pass LLVM or AST inputs to a generic gcc. 4206 if (II.getType() == types::TY_LLVM_IR || II.getType() == types::TY_LTO_IR || 4207 II.getType() == types::TY_LLVM_BC || II.getType() == types::TY_LTO_BC) 4208 D.Diag(diag::err_drv_no_linker_llvm_support) 4209 << getToolChain().getTripleString(); 4210 else if (II.getType() == types::TY_AST) 4211 D.Diag(diag::err_drv_no_ast_support) 4212 << getToolChain().getTripleString(); 4213 else if (II.getType() == types::TY_ModuleFile) 4214 D.Diag(diag::err_drv_no_module_support) 4215 << getToolChain().getTripleString(); 4216 4217 if (types::canTypeBeUserSpecified(II.getType())) { 4218 CmdArgs.push_back("-x"); 4219 CmdArgs.push_back(types::getTypeName(II.getType())); 4220 } 4221 4222 if (II.isFilename()) 4223 CmdArgs.push_back(II.getFilename()); 4224 else { 4225 const Arg &A = II.getInputArg(); 4226 4227 // Reverse translate some rewritten options. 4228 if (A.getOption().matches(options::OPT_Z_reserved_lib_stdcxx)) { 4229 CmdArgs.push_back("-lstdc++"); 4230 continue; 4231 } 4232 4233 // Don't render as input, we need gcc to do the translations. 4234 A.render(Args, CmdArgs); 4235 } 4236 } 4237 4238 const std::string customGCCName = D.getCCCGenericGCCName(); 4239 const char *GCCName; 4240 if (!customGCCName.empty()) 4241 GCCName = customGCCName.c_str(); 4242 else if (D.CCCIsCXX()) { 4243 GCCName = "g++"; 4244 } else 4245 GCCName = "gcc"; 4246 4247 const char *Exec = 4248 Args.MakeArgString(getToolChain().GetProgramPath(GCCName)); 4249 C.addCommand(new Command(JA, *this, Exec, CmdArgs)); 4250} 4251 4252void gcc::Preprocess::RenderExtraToolArgs(const JobAction &JA, 4253 ArgStringList &CmdArgs) const { 4254 CmdArgs.push_back("-E"); 4255} 4256 4257void gcc::Precompile::RenderExtraToolArgs(const JobAction &JA, 4258 ArgStringList &CmdArgs) const { 4259 // The type is good enough. 4260} 4261 4262void gcc::Compile::RenderExtraToolArgs(const JobAction &JA, 4263 ArgStringList &CmdArgs) const { 4264 const Driver &D = getToolChain().getDriver(); 4265 4266 // If -flto, etc. are present then make sure not to force assembly output. 4267 if (JA.getType() == types::TY_LLVM_IR || JA.getType() == types::TY_LTO_IR || 4268 JA.getType() == types::TY_LLVM_BC || JA.getType() == types::TY_LTO_BC) 4269 CmdArgs.push_back("-c"); 4270 else { 4271 if (JA.getType() != types::TY_PP_Asm) 4272 D.Diag(diag::err_drv_invalid_gcc_output_type) 4273 << getTypeName(JA.getType()); 4274 4275 CmdArgs.push_back("-S"); 4276 } 4277} 4278 4279void gcc::Assemble::RenderExtraToolArgs(const JobAction &JA, 4280 ArgStringList &CmdArgs) const { 4281 CmdArgs.push_back("-c"); 4282} 4283 4284void gcc::Link::RenderExtraToolArgs(const JobAction &JA, 4285 ArgStringList &CmdArgs) const { 4286 // The types are (hopefully) good enough. 4287} 4288 4289// Hexagon tools start. 4290void hexagon::Assemble::RenderExtraToolArgs(const JobAction &JA, 4291 ArgStringList &CmdArgs) const { 4292 4293} 4294void hexagon::Assemble::ConstructJob(Compilation &C, const JobAction &JA, 4295 const InputInfo &Output, 4296 const InputInfoList &Inputs, 4297 const ArgList &Args, 4298 const char *LinkingOutput) const { 4299 4300 const Driver &D = getToolChain().getDriver(); 4301 ArgStringList CmdArgs; 4302 4303 std::string MarchString = "-march="; 4304 MarchString += toolchains::Hexagon_TC::GetTargetCPU(Args); 4305 CmdArgs.push_back(Args.MakeArgString(MarchString)); 4306 4307 RenderExtraToolArgs(JA, CmdArgs); 4308 4309 if (Output.isFilename()) { 4310 CmdArgs.push_back("-o"); 4311 CmdArgs.push_back(Output.getFilename()); 4312 } else { 4313 assert(Output.isNothing() && "Unexpected output"); 4314 CmdArgs.push_back("-fsyntax-only"); 4315 } 4316 4317 std::string SmallDataThreshold = GetHexagonSmallDataThresholdValue(Args); 4318 if (!SmallDataThreshold.empty()) 4319 CmdArgs.push_back( 4320 Args.MakeArgString(std::string("-G") + SmallDataThreshold)); 4321 4322 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, 4323 options::OPT_Xassembler); 4324 4325 // Only pass -x if gcc will understand it; otherwise hope gcc 4326 // understands the suffix correctly. The main use case this would go 4327 // wrong in is for linker inputs if they happened to have an odd 4328 // suffix; really the only way to get this to happen is a command 4329 // like '-x foobar a.c' which will treat a.c like a linker input. 4330 // 4331 // FIXME: For the linker case specifically, can we safely convert 4332 // inputs into '-Wl,' options? 4333 for (InputInfoList::const_iterator 4334 it = Inputs.begin(), ie = Inputs.end(); it != ie; ++it) { 4335 const InputInfo &II = *it; 4336 4337 // Don't try to pass LLVM or AST inputs to a generic gcc. 4338 if (II.getType() == types::TY_LLVM_IR || II.getType() == types::TY_LTO_IR || 4339 II.getType() == types::TY_LLVM_BC || II.getType() == types::TY_LTO_BC) 4340 D.Diag(clang::diag::err_drv_no_linker_llvm_support) 4341 << getToolChain().getTripleString(); 4342 else if (II.getType() == types::TY_AST) 4343 D.Diag(clang::diag::err_drv_no_ast_support) 4344 << getToolChain().getTripleString(); 4345 else if (II.getType() == types::TY_ModuleFile) 4346 D.Diag(diag::err_drv_no_module_support) 4347 << getToolChain().getTripleString(); 4348 4349 if (II.isFilename()) 4350 CmdArgs.push_back(II.getFilename()); 4351 else 4352 // Don't render as input, we need gcc to do the translations. FIXME: Pranav: What is this ? 4353 II.getInputArg().render(Args, CmdArgs); 4354 } 4355 4356 const char *GCCName = "hexagon-as"; 4357 const char *Exec = 4358 Args.MakeArgString(getToolChain().GetProgramPath(GCCName)); 4359 C.addCommand(new Command(JA, *this, Exec, CmdArgs)); 4360 4361} 4362void hexagon::Link::RenderExtraToolArgs(const JobAction &JA, 4363 ArgStringList &CmdArgs) const { 4364 // The types are (hopefully) good enough. 4365} 4366 4367void hexagon::Link::ConstructJob(Compilation &C, const JobAction &JA, 4368 const InputInfo &Output, 4369 const InputInfoList &Inputs, 4370 const ArgList &Args, 4371 const char *LinkingOutput) const { 4372 4373 const toolchains::Hexagon_TC& ToolChain = 4374 static_cast<const toolchains::Hexagon_TC&>(getToolChain()); 4375 const Driver &D = ToolChain.getDriver(); 4376 4377 ArgStringList CmdArgs; 4378 4379 //---------------------------------------------------------------------------- 4380 // 4381 //---------------------------------------------------------------------------- 4382 bool hasStaticArg = Args.hasArg(options::OPT_static); 4383 bool buildingLib = Args.hasArg(options::OPT_shared); 4384 bool buildPIE = Args.hasArg(options::OPT_pie); 4385 bool incStdLib = !Args.hasArg(options::OPT_nostdlib); 4386 bool incStartFiles = !Args.hasArg(options::OPT_nostartfiles); 4387 bool incDefLibs = !Args.hasArg(options::OPT_nodefaultlibs); 4388 bool useShared = buildingLib && !hasStaticArg; 4389 4390 //---------------------------------------------------------------------------- 4391 // Silence warnings for various options 4392 //---------------------------------------------------------------------------- 4393 4394 Args.ClaimAllArgs(options::OPT_g_Group); 4395 Args.ClaimAllArgs(options::OPT_emit_llvm); 4396 Args.ClaimAllArgs(options::OPT_w); // Other warning options are already 4397 // handled somewhere else. 4398 Args.ClaimAllArgs(options::OPT_static_libgcc); 4399 4400 //---------------------------------------------------------------------------- 4401 // 4402 //---------------------------------------------------------------------------- 4403 for (std::vector<std::string>::const_iterator i = ToolChain.ExtraOpts.begin(), 4404 e = ToolChain.ExtraOpts.end(); 4405 i != e; ++i) 4406 CmdArgs.push_back(i->c_str()); 4407 4408 std::string MarchString = toolchains::Hexagon_TC::GetTargetCPU(Args); 4409 CmdArgs.push_back(Args.MakeArgString("-m" + MarchString)); 4410 4411 if (buildingLib) { 4412 CmdArgs.push_back("-shared"); 4413 CmdArgs.push_back("-call_shared"); // should be the default, but doing as 4414 // hexagon-gcc does 4415 } 4416 4417 if (hasStaticArg) 4418 CmdArgs.push_back("-static"); 4419 4420 if (buildPIE && !buildingLib) 4421 CmdArgs.push_back("-pie"); 4422 4423 std::string SmallDataThreshold = GetHexagonSmallDataThresholdValue(Args); 4424 if (!SmallDataThreshold.empty()) { 4425 CmdArgs.push_back( 4426 Args.MakeArgString(std::string("-G") + SmallDataThreshold)); 4427 } 4428 4429 //---------------------------------------------------------------------------- 4430 // 4431 //---------------------------------------------------------------------------- 4432 CmdArgs.push_back("-o"); 4433 CmdArgs.push_back(Output.getFilename()); 4434 4435 const std::string MarchSuffix = "/" + MarchString; 4436 const std::string G0Suffix = "/G0"; 4437 const std::string MarchG0Suffix = MarchSuffix + G0Suffix; 4438 const std::string RootDir = toolchains::Hexagon_TC::GetGnuDir(D.InstalledDir) 4439 + "/"; 4440 const std::string StartFilesDir = RootDir 4441 + "hexagon/lib" 4442 + (buildingLib 4443 ? MarchG0Suffix : MarchSuffix); 4444 4445 //---------------------------------------------------------------------------- 4446 // moslib 4447 //---------------------------------------------------------------------------- 4448 std::vector<std::string> oslibs; 4449 bool hasStandalone= false; 4450 4451 for (arg_iterator it = Args.filtered_begin(options::OPT_moslib_EQ), 4452 ie = Args.filtered_end(); it != ie; ++it) { 4453 (*it)->claim(); 4454 oslibs.push_back((*it)->getValue()); 4455 hasStandalone = hasStandalone || (oslibs.back() == "standalone"); 4456 } 4457 if (oslibs.empty()) { 4458 oslibs.push_back("standalone"); 4459 hasStandalone = true; 4460 } 4461 4462 //---------------------------------------------------------------------------- 4463 // Start Files 4464 //---------------------------------------------------------------------------- 4465 if (incStdLib && incStartFiles) { 4466 4467 if (!buildingLib) { 4468 if (hasStandalone) { 4469 CmdArgs.push_back( 4470 Args.MakeArgString(StartFilesDir + "/crt0_standalone.o")); 4471 } 4472 CmdArgs.push_back(Args.MakeArgString(StartFilesDir + "/crt0.o")); 4473 } 4474 std::string initObj = useShared ? "/initS.o" : "/init.o"; 4475 CmdArgs.push_back(Args.MakeArgString(StartFilesDir + initObj)); 4476 } 4477 4478 //---------------------------------------------------------------------------- 4479 // Library Search Paths 4480 //---------------------------------------------------------------------------- 4481 const ToolChain::path_list &LibPaths = ToolChain.getFilePaths(); 4482 for (ToolChain::path_list::const_iterator 4483 i = LibPaths.begin(), 4484 e = LibPaths.end(); 4485 i != e; 4486 ++i) 4487 CmdArgs.push_back(Args.MakeArgString(StringRef("-L") + *i)); 4488 4489 //---------------------------------------------------------------------------- 4490 // 4491 //---------------------------------------------------------------------------- 4492 Args.AddAllArgs(CmdArgs, options::OPT_T_Group); 4493 Args.AddAllArgs(CmdArgs, options::OPT_e); 4494 Args.AddAllArgs(CmdArgs, options::OPT_s); 4495 Args.AddAllArgs(CmdArgs, options::OPT_t); 4496 Args.AddAllArgs(CmdArgs, options::OPT_u_Group); 4497 4498 AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs); 4499 4500 //---------------------------------------------------------------------------- 4501 // Libraries 4502 //---------------------------------------------------------------------------- 4503 if (incStdLib && incDefLibs) { 4504 if (D.CCCIsCXX()) { 4505 ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs); 4506 CmdArgs.push_back("-lm"); 4507 } 4508 4509 CmdArgs.push_back("--start-group"); 4510 4511 if (!buildingLib) { 4512 for(std::vector<std::string>::iterator i = oslibs.begin(), 4513 e = oslibs.end(); i != e; ++i) 4514 CmdArgs.push_back(Args.MakeArgString("-l" + *i)); 4515 CmdArgs.push_back("-lc"); 4516 } 4517 CmdArgs.push_back("-lgcc"); 4518 4519 CmdArgs.push_back("--end-group"); 4520 } 4521 4522 //---------------------------------------------------------------------------- 4523 // End files 4524 //---------------------------------------------------------------------------- 4525 if (incStdLib && incStartFiles) { 4526 std::string finiObj = useShared ? "/finiS.o" : "/fini.o"; 4527 CmdArgs.push_back(Args.MakeArgString(StartFilesDir + finiObj)); 4528 } 4529 4530 std::string Linker = ToolChain.GetProgramPath("hexagon-ld"); 4531 C.addCommand(new Command(JA, *this, Args.MakeArgString(Linker), CmdArgs)); 4532} 4533// Hexagon tools end. 4534 4535llvm::Triple::ArchType darwin::getArchTypeForDarwinArchName(StringRef Str) { 4536 // See arch(3) and llvm-gcc's driver-driver.c. We don't implement support for 4537 // archs which Darwin doesn't use. 4538 4539 // The matching this routine does is fairly pointless, since it is neither the 4540 // complete architecture list, nor a reasonable subset. The problem is that 4541 // historically the driver driver accepts this and also ties its -march= 4542 // handling to the architecture name, so we need to be careful before removing 4543 // support for it. 4544 4545 // This code must be kept in sync with Clang's Darwin specific argument 4546 // translation. 4547 4548 return llvm::StringSwitch<llvm::Triple::ArchType>(Str) 4549 .Cases("ppc", "ppc601", "ppc603", "ppc604", "ppc604e", llvm::Triple::ppc) 4550 .Cases("ppc750", "ppc7400", "ppc7450", "ppc970", llvm::Triple::ppc) 4551 .Case("ppc64", llvm::Triple::ppc64) 4552 .Cases("i386", "i486", "i486SX", "i586", "i686", llvm::Triple::x86) 4553 .Cases("pentium", "pentpro", "pentIIm3", "pentIIm5", "pentium4", 4554 llvm::Triple::x86) 4555 .Cases("x86_64", "x86_64h", llvm::Triple::x86_64) 4556 // This is derived from the driver driver. 4557 .Cases("arm", "armv4t", "armv5", "armv6", "armv6m", llvm::Triple::arm) 4558 .Cases("armv7", "armv7em", "armv7f", "armv7k", "armv7m", llvm::Triple::arm) 4559 .Cases("armv7s", "xscale", llvm::Triple::arm) 4560 .Case("r600", llvm::Triple::r600) 4561 .Case("nvptx", llvm::Triple::nvptx) 4562 .Case("nvptx64", llvm::Triple::nvptx64) 4563 .Case("amdil", llvm::Triple::amdil) 4564 .Case("spir", llvm::Triple::spir) 4565 .Default(llvm::Triple::UnknownArch); 4566} 4567 4568const char *Clang::getBaseInputName(const ArgList &Args, 4569 const InputInfoList &Inputs) { 4570 return Args.MakeArgString( 4571 llvm::sys::path::filename(Inputs[0].getBaseInput())); 4572} 4573 4574const char *Clang::getBaseInputStem(const ArgList &Args, 4575 const InputInfoList &Inputs) { 4576 const char *Str = getBaseInputName(Args, Inputs); 4577 4578 if (const char *End = strrchr(Str, '.')) 4579 return Args.MakeArgString(std::string(Str, End)); 4580 4581 return Str; 4582} 4583 4584const char *Clang::getDependencyFileName(const ArgList &Args, 4585 const InputInfoList &Inputs) { 4586 // FIXME: Think about this more. 4587 std::string Res; 4588 4589 if (Arg *OutputOpt = Args.getLastArg(options::OPT_o)) { 4590 std::string Str(OutputOpt->getValue()); 4591 Res = Str.substr(0, Str.rfind('.')); 4592 } else { 4593 Res = getBaseInputStem(Args, Inputs); 4594 } 4595 return Args.MakeArgString(Res + ".d"); 4596} 4597 4598void darwin::Assemble::ConstructJob(Compilation &C, const JobAction &JA, 4599 const InputInfo &Output, 4600 const InputInfoList &Inputs, 4601 const ArgList &Args, 4602 const char *LinkingOutput) const { 4603 ArgStringList CmdArgs; 4604 4605 assert(Inputs.size() == 1 && "Unexpected number of inputs."); 4606 const InputInfo &Input = Inputs[0]; 4607 4608 // Determine the original source input. 4609 const Action *SourceAction = &JA; 4610 while (SourceAction->getKind() != Action::InputClass) { 4611 assert(!SourceAction->getInputs().empty() && "unexpected root action!"); 4612 SourceAction = SourceAction->getInputs()[0]; 4613 } 4614 4615 // If -no_integrated_as is used add -Q to the darwin assember driver to make 4616 // sure it runs its system assembler not clang's integrated assembler. 4617 if (Args.hasArg(options::OPT_no_integrated_as)) 4618 CmdArgs.push_back("-Q"); 4619 4620 // Forward -g, assuming we are dealing with an actual assembly file. 4621 if (SourceAction->getType() == types::TY_Asm || 4622 SourceAction->getType() == types::TY_PP_Asm) { 4623 if (Args.hasArg(options::OPT_gstabs)) 4624 CmdArgs.push_back("--gstabs"); 4625 else if (Args.hasArg(options::OPT_g_Group)) 4626 CmdArgs.push_back("-g"); 4627 } 4628 4629 // Derived from asm spec. 4630 AddDarwinArch(Args, CmdArgs); 4631 4632 // Use -force_cpusubtype_ALL on x86 by default. 4633 if (getToolChain().getArch() == llvm::Triple::x86 || 4634 getToolChain().getArch() == llvm::Triple::x86_64 || 4635 Args.hasArg(options::OPT_force__cpusubtype__ALL)) 4636 CmdArgs.push_back("-force_cpusubtype_ALL"); 4637 4638 if (getToolChain().getArch() != llvm::Triple::x86_64 && 4639 (((Args.hasArg(options::OPT_mkernel) || 4640 Args.hasArg(options::OPT_fapple_kext)) && 4641 (!getDarwinToolChain().isTargetIPhoneOS() || 4642 getDarwinToolChain().isIPhoneOSVersionLT(6, 0))) || 4643 Args.hasArg(options::OPT_static))) 4644 CmdArgs.push_back("-static"); 4645 4646 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, 4647 options::OPT_Xassembler); 4648 4649 assert(Output.isFilename() && "Unexpected lipo output."); 4650 CmdArgs.push_back("-o"); 4651 CmdArgs.push_back(Output.getFilename()); 4652 4653 assert(Input.isFilename() && "Invalid input."); 4654 CmdArgs.push_back(Input.getFilename()); 4655 4656 // asm_final spec is empty. 4657 4658 const char *Exec = 4659 Args.MakeArgString(getToolChain().GetProgramPath("as")); 4660 C.addCommand(new Command(JA, *this, Exec, CmdArgs)); 4661} 4662 4663void darwin::DarwinTool::anchor() {} 4664 4665void darwin::DarwinTool::AddDarwinArch(const ArgList &Args, 4666 ArgStringList &CmdArgs) const { 4667 StringRef ArchName = getDarwinToolChain().getDarwinArchName(Args); 4668 4669 // Derived from darwin_arch spec. 4670 CmdArgs.push_back("-arch"); 4671 CmdArgs.push_back(Args.MakeArgString(ArchName)); 4672 4673 // FIXME: Is this needed anymore? 4674 if (ArchName == "arm") 4675 CmdArgs.push_back("-force_cpusubtype_ALL"); 4676} 4677 4678bool darwin::Link::NeedsTempPath(const InputInfoList &Inputs) const { 4679 // We only need to generate a temp path for LTO if we aren't compiling object 4680 // files. When compiling source files, we run 'dsymutil' after linking. We 4681 // don't run 'dsymutil' when compiling object files. 4682 for (InputInfoList::const_iterator 4683 it = Inputs.begin(), ie = Inputs.end(); it != ie; ++it) 4684 if (it->getType() != types::TY_Object) 4685 return true; 4686 4687 return false; 4688} 4689 4690void darwin::Link::AddLinkArgs(Compilation &C, 4691 const ArgList &Args, 4692 ArgStringList &CmdArgs, 4693 const InputInfoList &Inputs) const { 4694 const Driver &D = getToolChain().getDriver(); 4695 const toolchains::Darwin &DarwinTC = getDarwinToolChain(); 4696 4697 unsigned Version[3] = { 0, 0, 0 }; 4698 if (Arg *A = Args.getLastArg(options::OPT_mlinker_version_EQ)) { 4699 bool HadExtra; 4700 if (!Driver::GetReleaseVersion(A->getValue(), Version[0], 4701 Version[1], Version[2], HadExtra) || 4702 HadExtra) 4703 D.Diag(diag::err_drv_invalid_version_number) 4704 << A->getAsString(Args); 4705 } 4706 4707 // Newer linkers support -demangle, pass it if supported and not disabled by 4708 // the user. 4709 if (Version[0] >= 100 && !Args.hasArg(options::OPT_Z_Xlinker__no_demangle)) { 4710 // Don't pass -demangle to ld_classic. 4711 // 4712 // FIXME: This is a temporary workaround, ld should be handling this. 4713 bool UsesLdClassic = (getToolChain().getArch() == llvm::Triple::x86 && 4714 Args.hasArg(options::OPT_static)); 4715 if (getToolChain().getArch() == llvm::Triple::x86) { 4716 for (arg_iterator it = Args.filtered_begin(options::OPT_Xlinker, 4717 options::OPT_Wl_COMMA), 4718 ie = Args.filtered_end(); it != ie; ++it) { 4719 const Arg *A = *it; 4720 for (unsigned i = 0, e = A->getNumValues(); i != e; ++i) 4721 if (StringRef(A->getValue(i)) == "-kext") 4722 UsesLdClassic = true; 4723 } 4724 } 4725 if (!UsesLdClassic) 4726 CmdArgs.push_back("-demangle"); 4727 } 4728 4729 if (Args.hasArg(options::OPT_rdynamic) && Version[0] >= 137) 4730 CmdArgs.push_back("-export_dynamic"); 4731 4732 // If we are using LTO, then automatically create a temporary file path for 4733 // the linker to use, so that it's lifetime will extend past a possible 4734 // dsymutil step. 4735 if (Version[0] >= 116 && D.IsUsingLTO(Args) && NeedsTempPath(Inputs)) { 4736 const char *TmpPath = C.getArgs().MakeArgString( 4737 D.GetTemporaryPath("cc", types::getTypeTempSuffix(types::TY_Object))); 4738 C.addTempFile(TmpPath); 4739 CmdArgs.push_back("-object_path_lto"); 4740 CmdArgs.push_back(TmpPath); 4741 } 4742 4743 // Derived from the "link" spec. 4744 Args.AddAllArgs(CmdArgs, options::OPT_static); 4745 if (!Args.hasArg(options::OPT_static)) 4746 CmdArgs.push_back("-dynamic"); 4747 if (Args.hasArg(options::OPT_fgnu_runtime)) { 4748 // FIXME: gcc replaces -lobjc in forward args with -lobjc-gnu 4749 // here. How do we wish to handle such things? 4750 } 4751 4752 if (!Args.hasArg(options::OPT_dynamiclib)) { 4753 AddDarwinArch(Args, CmdArgs); 4754 // FIXME: Why do this only on this path? 4755 Args.AddLastArg(CmdArgs, options::OPT_force__cpusubtype__ALL); 4756 4757 Args.AddLastArg(CmdArgs, options::OPT_bundle); 4758 Args.AddAllArgs(CmdArgs, options::OPT_bundle__loader); 4759 Args.AddAllArgs(CmdArgs, options::OPT_client__name); 4760 4761 Arg *A; 4762 if ((A = Args.getLastArg(options::OPT_compatibility__version)) || 4763 (A = Args.getLastArg(options::OPT_current__version)) || 4764 (A = Args.getLastArg(options::OPT_install__name))) 4765 D.Diag(diag::err_drv_argument_only_allowed_with) 4766 << A->getAsString(Args) << "-dynamiclib"; 4767 4768 Args.AddLastArg(CmdArgs, options::OPT_force__flat__namespace); 4769 Args.AddLastArg(CmdArgs, options::OPT_keep__private__externs); 4770 Args.AddLastArg(CmdArgs, options::OPT_private__bundle); 4771 } else { 4772 CmdArgs.push_back("-dylib"); 4773 4774 Arg *A; 4775 if ((A = Args.getLastArg(options::OPT_bundle)) || 4776 (A = Args.getLastArg(options::OPT_bundle__loader)) || 4777 (A = Args.getLastArg(options::OPT_client__name)) || 4778 (A = Args.getLastArg(options::OPT_force__flat__namespace)) || 4779 (A = Args.getLastArg(options::OPT_keep__private__externs)) || 4780 (A = Args.getLastArg(options::OPT_private__bundle))) 4781 D.Diag(diag::err_drv_argument_not_allowed_with) 4782 << A->getAsString(Args) << "-dynamiclib"; 4783 4784 Args.AddAllArgsTranslated(CmdArgs, options::OPT_compatibility__version, 4785 "-dylib_compatibility_version"); 4786 Args.AddAllArgsTranslated(CmdArgs, options::OPT_current__version, 4787 "-dylib_current_version"); 4788 4789 AddDarwinArch(Args, CmdArgs); 4790 4791 Args.AddAllArgsTranslated(CmdArgs, options::OPT_install__name, 4792 "-dylib_install_name"); 4793 } 4794 4795 Args.AddLastArg(CmdArgs, options::OPT_all__load); 4796 Args.AddAllArgs(CmdArgs, options::OPT_allowable__client); 4797 Args.AddLastArg(CmdArgs, options::OPT_bind__at__load); 4798 if (DarwinTC.isTargetIPhoneOS()) 4799 Args.AddLastArg(CmdArgs, options::OPT_arch__errors__fatal); 4800 Args.AddLastArg(CmdArgs, options::OPT_dead__strip); 4801 Args.AddLastArg(CmdArgs, options::OPT_no__dead__strip__inits__and__terms); 4802 Args.AddAllArgs(CmdArgs, options::OPT_dylib__file); 4803 Args.AddLastArg(CmdArgs, options::OPT_dynamic); 4804 Args.AddAllArgs(CmdArgs, options::OPT_exported__symbols__list); 4805 Args.AddLastArg(CmdArgs, options::OPT_flat__namespace); 4806 Args.AddAllArgs(CmdArgs, options::OPT_force__load); 4807 Args.AddAllArgs(CmdArgs, options::OPT_headerpad__max__install__names); 4808 Args.AddAllArgs(CmdArgs, options::OPT_image__base); 4809 Args.AddAllArgs(CmdArgs, options::OPT_init); 4810 4811 // Add the deployment target. 4812 VersionTuple TargetVersion = DarwinTC.getTargetVersion(); 4813 4814 // If we had an explicit -mios-simulator-version-min argument, honor that, 4815 // otherwise use the traditional deployment targets. We can't just check the 4816 // is-sim attribute because existing code follows this path, and the linker 4817 // may not handle the argument. 4818 // 4819 // FIXME: We may be able to remove this, once we can verify no one depends on 4820 // it. 4821 if (Args.hasArg(options::OPT_mios_simulator_version_min_EQ)) 4822 CmdArgs.push_back("-ios_simulator_version_min"); 4823 else if (DarwinTC.isTargetIPhoneOS()) 4824 CmdArgs.push_back("-iphoneos_version_min"); 4825 else 4826 CmdArgs.push_back("-macosx_version_min"); 4827 CmdArgs.push_back(Args.MakeArgString(TargetVersion.getAsString())); 4828 4829 Args.AddLastArg(CmdArgs, options::OPT_nomultidefs); 4830 Args.AddLastArg(CmdArgs, options::OPT_multi__module); 4831 Args.AddLastArg(CmdArgs, options::OPT_single__module); 4832 Args.AddAllArgs(CmdArgs, options::OPT_multiply__defined); 4833 Args.AddAllArgs(CmdArgs, options::OPT_multiply__defined__unused); 4834 4835 if (const Arg *A = Args.getLastArg(options::OPT_fpie, options::OPT_fPIE, 4836 options::OPT_fno_pie, 4837 options::OPT_fno_PIE)) { 4838 if (A->getOption().matches(options::OPT_fpie) || 4839 A->getOption().matches(options::OPT_fPIE)) 4840 CmdArgs.push_back("-pie"); 4841 else 4842 CmdArgs.push_back("-no_pie"); 4843 } 4844 4845 Args.AddLastArg(CmdArgs, options::OPT_prebind); 4846 Args.AddLastArg(CmdArgs, options::OPT_noprebind); 4847 Args.AddLastArg(CmdArgs, options::OPT_nofixprebinding); 4848 Args.AddLastArg(CmdArgs, options::OPT_prebind__all__twolevel__modules); 4849 Args.AddLastArg(CmdArgs, options::OPT_read__only__relocs); 4850 Args.AddAllArgs(CmdArgs, options::OPT_sectcreate); 4851 Args.AddAllArgs(CmdArgs, options::OPT_sectorder); 4852 Args.AddAllArgs(CmdArgs, options::OPT_seg1addr); 4853 Args.AddAllArgs(CmdArgs, options::OPT_segprot); 4854 Args.AddAllArgs(CmdArgs, options::OPT_segaddr); 4855 Args.AddAllArgs(CmdArgs, options::OPT_segs__read__only__addr); 4856 Args.AddAllArgs(CmdArgs, options::OPT_segs__read__write__addr); 4857 Args.AddAllArgs(CmdArgs, options::OPT_seg__addr__table); 4858 Args.AddAllArgs(CmdArgs, options::OPT_seg__addr__table__filename); 4859 Args.AddAllArgs(CmdArgs, options::OPT_sub__library); 4860 Args.AddAllArgs(CmdArgs, options::OPT_sub__umbrella); 4861 4862 // Give --sysroot= preference, over the Apple specific behavior to also use 4863 // --isysroot as the syslibroot. 4864 StringRef sysroot = C.getSysRoot(); 4865 if (sysroot != "") { 4866 CmdArgs.push_back("-syslibroot"); 4867 CmdArgs.push_back(C.getArgs().MakeArgString(sysroot)); 4868 } else if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) { 4869 CmdArgs.push_back("-syslibroot"); 4870 CmdArgs.push_back(A->getValue()); 4871 } 4872 4873 Args.AddLastArg(CmdArgs, options::OPT_twolevel__namespace); 4874 Args.AddLastArg(CmdArgs, options::OPT_twolevel__namespace__hints); 4875 Args.AddAllArgs(CmdArgs, options::OPT_umbrella); 4876 Args.AddAllArgs(CmdArgs, options::OPT_undefined); 4877 Args.AddAllArgs(CmdArgs, options::OPT_unexported__symbols__list); 4878 Args.AddAllArgs(CmdArgs, options::OPT_weak__reference__mismatches); 4879 Args.AddLastArg(CmdArgs, options::OPT_X_Flag); 4880 Args.AddAllArgs(CmdArgs, options::OPT_y); 4881 Args.AddLastArg(CmdArgs, options::OPT_w); 4882 Args.AddAllArgs(CmdArgs, options::OPT_pagezero__size); 4883 Args.AddAllArgs(CmdArgs, options::OPT_segs__read__); 4884 Args.AddLastArg(CmdArgs, options::OPT_seglinkedit); 4885 Args.AddLastArg(CmdArgs, options::OPT_noseglinkedit); 4886 Args.AddAllArgs(CmdArgs, options::OPT_sectalign); 4887 Args.AddAllArgs(CmdArgs, options::OPT_sectobjectsymbols); 4888 Args.AddAllArgs(CmdArgs, options::OPT_segcreate); 4889 Args.AddLastArg(CmdArgs, options::OPT_whyload); 4890 Args.AddLastArg(CmdArgs, options::OPT_whatsloaded); 4891 Args.AddAllArgs(CmdArgs, options::OPT_dylinker__install__name); 4892 Args.AddLastArg(CmdArgs, options::OPT_dylinker); 4893 Args.AddLastArg(CmdArgs, options::OPT_Mach); 4894} 4895 4896void darwin::Link::ConstructJob(Compilation &C, const JobAction &JA, 4897 const InputInfo &Output, 4898 const InputInfoList &Inputs, 4899 const ArgList &Args, 4900 const char *LinkingOutput) const { 4901 assert(Output.getType() == types::TY_Image && "Invalid linker output type."); 4902 4903 // The logic here is derived from gcc's behavior; most of which 4904 // comes from specs (starting with link_command). Consult gcc for 4905 // more information. 4906 ArgStringList CmdArgs; 4907 4908 /// Hack(tm) to ignore linking errors when we are doing ARC migration. 4909 if (Args.hasArg(options::OPT_ccc_arcmt_check, 4910 options::OPT_ccc_arcmt_migrate)) { 4911 for (ArgList::const_iterator I = Args.begin(), E = Args.end(); I != E; ++I) 4912 (*I)->claim(); 4913 const char *Exec = 4914 Args.MakeArgString(getToolChain().GetProgramPath("touch")); 4915 CmdArgs.push_back(Output.getFilename()); 4916 C.addCommand(new Command(JA, *this, Exec, CmdArgs)); 4917 return; 4918 } 4919 4920 // I'm not sure why this particular decomposition exists in gcc, but 4921 // we follow suite for ease of comparison. 4922 AddLinkArgs(C, Args, CmdArgs, Inputs); 4923 4924 Args.AddAllArgs(CmdArgs, options::OPT_d_Flag); 4925 Args.AddAllArgs(CmdArgs, options::OPT_s); 4926 Args.AddAllArgs(CmdArgs, options::OPT_t); 4927 Args.AddAllArgs(CmdArgs, options::OPT_Z_Flag); 4928 Args.AddAllArgs(CmdArgs, options::OPT_u_Group); 4929 Args.AddLastArg(CmdArgs, options::OPT_e); 4930 Args.AddAllArgs(CmdArgs, options::OPT_r); 4931 4932 // Forward -ObjC when either -ObjC or -ObjC++ is used, to force loading 4933 // members of static archive libraries which implement Objective-C classes or 4934 // categories. 4935 if (Args.hasArg(options::OPT_ObjC) || Args.hasArg(options::OPT_ObjCXX)) 4936 CmdArgs.push_back("-ObjC"); 4937 4938 CmdArgs.push_back("-o"); 4939 CmdArgs.push_back(Output.getFilename()); 4940 4941 if (!Args.hasArg(options::OPT_nostdlib) && 4942 !Args.hasArg(options::OPT_nostartfiles)) { 4943 // Derived from startfile spec. 4944 if (Args.hasArg(options::OPT_dynamiclib)) { 4945 // Derived from darwin_dylib1 spec. 4946 if (getDarwinToolChain().isTargetIOSSimulator()) { 4947 // The simulator doesn't have a versioned crt1 file. 4948 CmdArgs.push_back("-ldylib1.o"); 4949 } else if (getDarwinToolChain().isTargetIPhoneOS()) { 4950 if (getDarwinToolChain().isIPhoneOSVersionLT(3, 1)) 4951 CmdArgs.push_back("-ldylib1.o"); 4952 } else { 4953 if (getDarwinToolChain().isMacosxVersionLT(10, 5)) 4954 CmdArgs.push_back("-ldylib1.o"); 4955 else if (getDarwinToolChain().isMacosxVersionLT(10, 6)) 4956 CmdArgs.push_back("-ldylib1.10.5.o"); 4957 } 4958 } else { 4959 if (Args.hasArg(options::OPT_bundle)) { 4960 if (!Args.hasArg(options::OPT_static)) { 4961 // Derived from darwin_bundle1 spec. 4962 if (getDarwinToolChain().isTargetIOSSimulator()) { 4963 // The simulator doesn't have a versioned crt1 file. 4964 CmdArgs.push_back("-lbundle1.o"); 4965 } else if (getDarwinToolChain().isTargetIPhoneOS()) { 4966 if (getDarwinToolChain().isIPhoneOSVersionLT(3, 1)) 4967 CmdArgs.push_back("-lbundle1.o"); 4968 } else { 4969 if (getDarwinToolChain().isMacosxVersionLT(10, 6)) 4970 CmdArgs.push_back("-lbundle1.o"); 4971 } 4972 } 4973 } else { 4974 if (Args.hasArg(options::OPT_pg) && 4975 getToolChain().SupportsProfiling()) { 4976 if (Args.hasArg(options::OPT_static) || 4977 Args.hasArg(options::OPT_object) || 4978 Args.hasArg(options::OPT_preload)) { 4979 CmdArgs.push_back("-lgcrt0.o"); 4980 } else { 4981 CmdArgs.push_back("-lgcrt1.o"); 4982 4983 // darwin_crt2 spec is empty. 4984 } 4985 // By default on OS X 10.8 and later, we don't link with a crt1.o 4986 // file and the linker knows to use _main as the entry point. But, 4987 // when compiling with -pg, we need to link with the gcrt1.o file, 4988 // so pass the -no_new_main option to tell the linker to use the 4989 // "start" symbol as the entry point. 4990 if (getDarwinToolChain().isTargetMacOS() && 4991 !getDarwinToolChain().isMacosxVersionLT(10, 8)) 4992 CmdArgs.push_back("-no_new_main"); 4993 } else { 4994 if (Args.hasArg(options::OPT_static) || 4995 Args.hasArg(options::OPT_object) || 4996 Args.hasArg(options::OPT_preload)) { 4997 CmdArgs.push_back("-lcrt0.o"); 4998 } else { 4999 // Derived from darwin_crt1 spec. 5000 if (getDarwinToolChain().isTargetIOSSimulator()) { 5001 // The simulator doesn't have a versioned crt1 file. 5002 CmdArgs.push_back("-lcrt1.o"); 5003 } else if (getDarwinToolChain().isTargetIPhoneOS()) { 5004 if (getDarwinToolChain().isIPhoneOSVersionLT(3, 1)) 5005 CmdArgs.push_back("-lcrt1.o"); 5006 else if (getDarwinToolChain().isIPhoneOSVersionLT(6, 0)) 5007 CmdArgs.push_back("-lcrt1.3.1.o"); 5008 } else { 5009 if (getDarwinToolChain().isMacosxVersionLT(10, 5)) 5010 CmdArgs.push_back("-lcrt1.o"); 5011 else if (getDarwinToolChain().isMacosxVersionLT(10, 6)) 5012 CmdArgs.push_back("-lcrt1.10.5.o"); 5013 else if (getDarwinToolChain().isMacosxVersionLT(10, 8)) 5014 CmdArgs.push_back("-lcrt1.10.6.o"); 5015 5016 // darwin_crt2 spec is empty. 5017 } 5018 } 5019 } 5020 } 5021 } 5022 5023 if (!getDarwinToolChain().isTargetIPhoneOS() && 5024 Args.hasArg(options::OPT_shared_libgcc) && 5025 getDarwinToolChain().isMacosxVersionLT(10, 5)) { 5026 const char *Str = 5027 Args.MakeArgString(getToolChain().GetFilePath("crt3.o")); 5028 CmdArgs.push_back(Str); 5029 } 5030 } 5031 5032 Args.AddAllArgs(CmdArgs, options::OPT_L); 5033 5034 if (Args.hasArg(options::OPT_fopenmp)) 5035 // This is more complicated in gcc... 5036 CmdArgs.push_back("-lgomp"); 5037 5038 AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs); 5039 5040 if (isObjCRuntimeLinked(Args) && 5041 !Args.hasArg(options::OPT_nostdlib) && 5042 !Args.hasArg(options::OPT_nodefaultlibs)) { 5043 // Avoid linking compatibility stubs on i386 mac. 5044 if (!getDarwinToolChain().isTargetMacOS() || 5045 getDarwinToolChain().getArch() != llvm::Triple::x86) { 5046 // If we don't have ARC or subscripting runtime support, link in the 5047 // runtime stubs. We have to do this *before* adding any of the normal 5048 // linker inputs so that its initializer gets run first. 5049 ObjCRuntime runtime = 5050 getDarwinToolChain().getDefaultObjCRuntime(/*nonfragile*/ true); 5051 // We use arclite library for both ARC and subscripting support. 5052 if ((!runtime.hasNativeARC() && isObjCAutoRefCount(Args)) || 5053 !runtime.hasSubscripting()) 5054 getDarwinToolChain().AddLinkARCArgs(Args, CmdArgs); 5055 } 5056 CmdArgs.push_back("-framework"); 5057 CmdArgs.push_back("Foundation"); 5058 // Link libobj. 5059 CmdArgs.push_back("-lobjc"); 5060 } 5061 5062 if (LinkingOutput) { 5063 CmdArgs.push_back("-arch_multiple"); 5064 CmdArgs.push_back("-final_output"); 5065 CmdArgs.push_back(LinkingOutput); 5066 } 5067 5068 if (Args.hasArg(options::OPT_fnested_functions)) 5069 CmdArgs.push_back("-allow_stack_execute"); 5070 5071 if (!Args.hasArg(options::OPT_nostdlib) && 5072 !Args.hasArg(options::OPT_nodefaultlibs)) { 5073 if (getToolChain().getDriver().CCCIsCXX()) 5074 getToolChain().AddCXXStdlibLibArgs(Args, CmdArgs); 5075 5076 // link_ssp spec is empty. 5077 5078 // Let the tool chain choose which runtime library to link. 5079 getDarwinToolChain().AddLinkRuntimeLibArgs(Args, CmdArgs); 5080 } 5081 5082 if (!Args.hasArg(options::OPT_nostdlib) && 5083 !Args.hasArg(options::OPT_nostartfiles)) { 5084 // endfile_spec is empty. 5085 } 5086 5087 Args.AddAllArgs(CmdArgs, options::OPT_T_Group); 5088 Args.AddAllArgs(CmdArgs, options::OPT_F); 5089 5090 const char *Exec = 5091 Args.MakeArgString(getToolChain().GetProgramPath("ld")); 5092 C.addCommand(new Command(JA, *this, Exec, CmdArgs)); 5093} 5094 5095void darwin::Lipo::ConstructJob(Compilation &C, const JobAction &JA, 5096 const InputInfo &Output, 5097 const InputInfoList &Inputs, 5098 const ArgList &Args, 5099 const char *LinkingOutput) const { 5100 ArgStringList CmdArgs; 5101 5102 CmdArgs.push_back("-create"); 5103 assert(Output.isFilename() && "Unexpected lipo output."); 5104 5105 CmdArgs.push_back("-output"); 5106 CmdArgs.push_back(Output.getFilename()); 5107 5108 for (InputInfoList::const_iterator 5109 it = Inputs.begin(), ie = Inputs.end(); it != ie; ++it) { 5110 const InputInfo &II = *it; 5111 assert(II.isFilename() && "Unexpected lipo input."); 5112 CmdArgs.push_back(II.getFilename()); 5113 } 5114 const char *Exec = 5115 Args.MakeArgString(getToolChain().GetProgramPath("lipo")); 5116 C.addCommand(new Command(JA, *this, Exec, CmdArgs)); 5117} 5118 5119void darwin::Dsymutil::ConstructJob(Compilation &C, const JobAction &JA, 5120 const InputInfo &Output, 5121 const InputInfoList &Inputs, 5122 const ArgList &Args, 5123 const char *LinkingOutput) const { 5124 ArgStringList CmdArgs; 5125 5126 CmdArgs.push_back("-o"); 5127 CmdArgs.push_back(Output.getFilename()); 5128 5129 assert(Inputs.size() == 1 && "Unable to handle multiple inputs."); 5130 const InputInfo &Input = Inputs[0]; 5131 assert(Input.isFilename() && "Unexpected dsymutil input."); 5132 CmdArgs.push_back(Input.getFilename()); 5133 5134 const char *Exec = 5135 Args.MakeArgString(getToolChain().GetProgramPath("dsymutil")); 5136 C.addCommand(new Command(JA, *this, Exec, CmdArgs)); 5137} 5138 5139void darwin::VerifyDebug::ConstructJob(Compilation &C, const JobAction &JA, 5140 const InputInfo &Output, 5141 const InputInfoList &Inputs, 5142 const ArgList &Args, 5143 const char *LinkingOutput) const { 5144 ArgStringList CmdArgs; 5145 CmdArgs.push_back("--verify"); 5146 CmdArgs.push_back("--debug-info"); 5147 CmdArgs.push_back("--eh-frame"); 5148 CmdArgs.push_back("--quiet"); 5149 5150 assert(Inputs.size() == 1 && "Unable to handle multiple inputs."); 5151 const InputInfo &Input = Inputs[0]; 5152 assert(Input.isFilename() && "Unexpected verify input"); 5153 5154 // Grabbing the output of the earlier dsymutil run. 5155 CmdArgs.push_back(Input.getFilename()); 5156 5157 const char *Exec = 5158 Args.MakeArgString(getToolChain().GetProgramPath("dwarfdump")); 5159 C.addCommand(new Command(JA, *this, Exec, CmdArgs)); 5160} 5161 5162void solaris::Assemble::ConstructJob(Compilation &C, const JobAction &JA, 5163 const InputInfo &Output, 5164 const InputInfoList &Inputs, 5165 const ArgList &Args, 5166 const char *LinkingOutput) const { 5167 ArgStringList CmdArgs; 5168 5169 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, 5170 options::OPT_Xassembler); 5171 5172 CmdArgs.push_back("-o"); 5173 CmdArgs.push_back(Output.getFilename()); 5174 5175 for (InputInfoList::const_iterator 5176 it = Inputs.begin(), ie = Inputs.end(); it != ie; ++it) { 5177 const InputInfo &II = *it; 5178 CmdArgs.push_back(II.getFilename()); 5179 } 5180 5181 const char *Exec = 5182 Args.MakeArgString(getToolChain().GetProgramPath("as")); 5183 C.addCommand(new Command(JA, *this, Exec, CmdArgs)); 5184} 5185 5186 5187void solaris::Link::ConstructJob(Compilation &C, const JobAction &JA, 5188 const InputInfo &Output, 5189 const InputInfoList &Inputs, 5190 const ArgList &Args, 5191 const char *LinkingOutput) const { 5192 // FIXME: Find a real GCC, don't hard-code versions here 5193 std::string GCCLibPath = "/usr/gcc/4.5/lib/gcc/"; 5194 const llvm::Triple &T = getToolChain().getTriple(); 5195 std::string LibPath = "/usr/lib/"; 5196 llvm::Triple::ArchType Arch = T.getArch(); 5197 switch (Arch) { 5198 case llvm::Triple::x86: 5199 GCCLibPath += 5200 ("i386-" + T.getVendorName() + "-" + T.getOSName()).str() + "/4.5.2/"; 5201 break; 5202 case llvm::Triple::x86_64: 5203 GCCLibPath += ("i386-" + T.getVendorName() + "-" + T.getOSName()).str(); 5204 GCCLibPath += "/4.5.2/amd64/"; 5205 LibPath += "amd64/"; 5206 break; 5207 default: 5208 llvm_unreachable("Unsupported architecture"); 5209 } 5210 5211 ArgStringList CmdArgs; 5212 5213 // Demangle C++ names in errors 5214 CmdArgs.push_back("-C"); 5215 5216 if ((!Args.hasArg(options::OPT_nostdlib)) && 5217 (!Args.hasArg(options::OPT_shared))) { 5218 CmdArgs.push_back("-e"); 5219 CmdArgs.push_back("_start"); 5220 } 5221 5222 if (Args.hasArg(options::OPT_static)) { 5223 CmdArgs.push_back("-Bstatic"); 5224 CmdArgs.push_back("-dn"); 5225 } else { 5226 CmdArgs.push_back("-Bdynamic"); 5227 if (Args.hasArg(options::OPT_shared)) { 5228 CmdArgs.push_back("-shared"); 5229 } else { 5230 CmdArgs.push_back("--dynamic-linker"); 5231 CmdArgs.push_back(Args.MakeArgString(LibPath + "ld.so.1")); 5232 } 5233 } 5234 5235 if (Output.isFilename()) { 5236 CmdArgs.push_back("-o"); 5237 CmdArgs.push_back(Output.getFilename()); 5238 } else { 5239 assert(Output.isNothing() && "Invalid output."); 5240 } 5241 5242 if (!Args.hasArg(options::OPT_nostdlib) && 5243 !Args.hasArg(options::OPT_nostartfiles)) { 5244 if (!Args.hasArg(options::OPT_shared)) { 5245 CmdArgs.push_back(Args.MakeArgString(LibPath + "crt1.o")); 5246 CmdArgs.push_back(Args.MakeArgString(LibPath + "crti.o")); 5247 CmdArgs.push_back(Args.MakeArgString(LibPath + "values-Xa.o")); 5248 CmdArgs.push_back(Args.MakeArgString(GCCLibPath + "crtbegin.o")); 5249 } else { 5250 CmdArgs.push_back(Args.MakeArgString(LibPath + "crti.o")); 5251 CmdArgs.push_back(Args.MakeArgString(LibPath + "values-Xa.o")); 5252 CmdArgs.push_back(Args.MakeArgString(GCCLibPath + "crtbegin.o")); 5253 } 5254 if (getToolChain().getDriver().CCCIsCXX()) 5255 CmdArgs.push_back(Args.MakeArgString(LibPath + "cxa_finalize.o")); 5256 } 5257 5258 CmdArgs.push_back(Args.MakeArgString("-L" + GCCLibPath)); 5259 5260 Args.AddAllArgs(CmdArgs, options::OPT_L); 5261 Args.AddAllArgs(CmdArgs, options::OPT_T_Group); 5262 Args.AddAllArgs(CmdArgs, options::OPT_e); 5263 Args.AddAllArgs(CmdArgs, options::OPT_r); 5264 5265 AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs); 5266 5267 if (!Args.hasArg(options::OPT_nostdlib) && 5268 !Args.hasArg(options::OPT_nodefaultlibs)) { 5269 if (getToolChain().getDriver().CCCIsCXX()) 5270 getToolChain().AddCXXStdlibLibArgs(Args, CmdArgs); 5271 CmdArgs.push_back("-lgcc_s"); 5272 if (!Args.hasArg(options::OPT_shared)) { 5273 CmdArgs.push_back("-lgcc"); 5274 CmdArgs.push_back("-lc"); 5275 CmdArgs.push_back("-lm"); 5276 } 5277 } 5278 5279 if (!Args.hasArg(options::OPT_nostdlib) && 5280 !Args.hasArg(options::OPT_nostartfiles)) { 5281 CmdArgs.push_back(Args.MakeArgString(GCCLibPath + "crtend.o")); 5282 } 5283 CmdArgs.push_back(Args.MakeArgString(LibPath + "crtn.o")); 5284 5285 addProfileRT(getToolChain(), Args, CmdArgs, getToolChain().getTriple()); 5286 5287 const char *Exec = 5288 Args.MakeArgString(getToolChain().GetProgramPath("ld")); 5289 C.addCommand(new Command(JA, *this, Exec, CmdArgs)); 5290} 5291 5292void auroraux::Assemble::ConstructJob(Compilation &C, const JobAction &JA, 5293 const InputInfo &Output, 5294 const InputInfoList &Inputs, 5295 const ArgList &Args, 5296 const char *LinkingOutput) const { 5297 ArgStringList CmdArgs; 5298 5299 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, 5300 options::OPT_Xassembler); 5301 5302 CmdArgs.push_back("-o"); 5303 CmdArgs.push_back(Output.getFilename()); 5304 5305 for (InputInfoList::const_iterator 5306 it = Inputs.begin(), ie = Inputs.end(); it != ie; ++it) { 5307 const InputInfo &II = *it; 5308 CmdArgs.push_back(II.getFilename()); 5309 } 5310 5311 const char *Exec = 5312 Args.MakeArgString(getToolChain().GetProgramPath("gas")); 5313 C.addCommand(new Command(JA, *this, Exec, CmdArgs)); 5314} 5315 5316void auroraux::Link::ConstructJob(Compilation &C, const JobAction &JA, 5317 const InputInfo &Output, 5318 const InputInfoList &Inputs, 5319 const ArgList &Args, 5320 const char *LinkingOutput) const { 5321 ArgStringList CmdArgs; 5322 5323 if ((!Args.hasArg(options::OPT_nostdlib)) && 5324 (!Args.hasArg(options::OPT_shared))) { 5325 CmdArgs.push_back("-e"); 5326 CmdArgs.push_back("_start"); 5327 } 5328 5329 if (Args.hasArg(options::OPT_static)) { 5330 CmdArgs.push_back("-Bstatic"); 5331 CmdArgs.push_back("-dn"); 5332 } else { 5333// CmdArgs.push_back("--eh-frame-hdr"); 5334 CmdArgs.push_back("-Bdynamic"); 5335 if (Args.hasArg(options::OPT_shared)) { 5336 CmdArgs.push_back("-shared"); 5337 } else { 5338 CmdArgs.push_back("--dynamic-linker"); 5339 CmdArgs.push_back("/lib/ld.so.1"); // 64Bit Path /lib/amd64/ld.so.1 5340 } 5341 } 5342 5343 if (Output.isFilename()) { 5344 CmdArgs.push_back("-o"); 5345 CmdArgs.push_back(Output.getFilename()); 5346 } else { 5347 assert(Output.isNothing() && "Invalid output."); 5348 } 5349 5350 if (!Args.hasArg(options::OPT_nostdlib) && 5351 !Args.hasArg(options::OPT_nostartfiles)) { 5352 if (!Args.hasArg(options::OPT_shared)) { 5353 CmdArgs.push_back(Args.MakeArgString( 5354 getToolChain().GetFilePath("crt1.o"))); 5355 CmdArgs.push_back(Args.MakeArgString( 5356 getToolChain().GetFilePath("crti.o"))); 5357 CmdArgs.push_back(Args.MakeArgString( 5358 getToolChain().GetFilePath("crtbegin.o"))); 5359 } else { 5360 CmdArgs.push_back(Args.MakeArgString( 5361 getToolChain().GetFilePath("crti.o"))); 5362 } 5363 CmdArgs.push_back(Args.MakeArgString( 5364 getToolChain().GetFilePath("crtn.o"))); 5365 } 5366 5367 CmdArgs.push_back(Args.MakeArgString("-L/opt/gcc4/lib/gcc/" 5368 + getToolChain().getTripleString() 5369 + "/4.2.4")); 5370 5371 Args.AddAllArgs(CmdArgs, options::OPT_L); 5372 Args.AddAllArgs(CmdArgs, options::OPT_T_Group); 5373 Args.AddAllArgs(CmdArgs, options::OPT_e); 5374 5375 AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs); 5376 5377 if (!Args.hasArg(options::OPT_nostdlib) && 5378 !Args.hasArg(options::OPT_nodefaultlibs)) { 5379 // FIXME: For some reason GCC passes -lgcc before adding 5380 // the default system libraries. Just mimic this for now. 5381 CmdArgs.push_back("-lgcc"); 5382 5383 if (Args.hasArg(options::OPT_pthread)) 5384 CmdArgs.push_back("-pthread"); 5385 if (!Args.hasArg(options::OPT_shared)) 5386 CmdArgs.push_back("-lc"); 5387 CmdArgs.push_back("-lgcc"); 5388 } 5389 5390 if (!Args.hasArg(options::OPT_nostdlib) && 5391 !Args.hasArg(options::OPT_nostartfiles)) { 5392 if (!Args.hasArg(options::OPT_shared)) 5393 CmdArgs.push_back(Args.MakeArgString( 5394 getToolChain().GetFilePath("crtend.o"))); 5395 } 5396 5397 addProfileRT(getToolChain(), Args, CmdArgs, getToolChain().getTriple()); 5398 5399 const char *Exec = 5400 Args.MakeArgString(getToolChain().GetProgramPath("ld")); 5401 C.addCommand(new Command(JA, *this, Exec, CmdArgs)); 5402} 5403 5404void openbsd::Assemble::ConstructJob(Compilation &C, const JobAction &JA, 5405 const InputInfo &Output, 5406 const InputInfoList &Inputs, 5407 const ArgList &Args, 5408 const char *LinkingOutput) const { 5409 ArgStringList CmdArgs; 5410 5411 // When building 32-bit code on OpenBSD/amd64, we have to explicitly 5412 // instruct as in the base system to assemble 32-bit code. 5413 if (getToolChain().getArch() == llvm::Triple::x86) 5414 CmdArgs.push_back("--32"); 5415 else if (getToolChain().getArch() == llvm::Triple::ppc) { 5416 CmdArgs.push_back("-mppc"); 5417 CmdArgs.push_back("-many"); 5418 } else if (getToolChain().getArch() == llvm::Triple::mips64 || 5419 getToolChain().getArch() == llvm::Triple::mips64el) { 5420 StringRef CPUName; 5421 StringRef ABIName; 5422 getMipsCPUAndABI(Args, getToolChain().getTriple(), CPUName, ABIName); 5423 5424 CmdArgs.push_back("-mabi"); 5425 CmdArgs.push_back(getGnuCompatibleMipsABIName(ABIName).data()); 5426 5427 if (getToolChain().getArch() == llvm::Triple::mips64) 5428 CmdArgs.push_back("-EB"); 5429 else 5430 CmdArgs.push_back("-EL"); 5431 5432 Arg *LastPICArg = Args.getLastArg(options::OPT_fPIC, options::OPT_fno_PIC, 5433 options::OPT_fpic, options::OPT_fno_pic, 5434 options::OPT_fPIE, options::OPT_fno_PIE, 5435 options::OPT_fpie, options::OPT_fno_pie); 5436 if (LastPICArg && 5437 (LastPICArg->getOption().matches(options::OPT_fPIC) || 5438 LastPICArg->getOption().matches(options::OPT_fpic) || 5439 LastPICArg->getOption().matches(options::OPT_fPIE) || 5440 LastPICArg->getOption().matches(options::OPT_fpie))) { 5441 CmdArgs.push_back("-KPIC"); 5442 } 5443 } 5444 5445 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, 5446 options::OPT_Xassembler); 5447 5448 CmdArgs.push_back("-o"); 5449 CmdArgs.push_back(Output.getFilename()); 5450 5451 for (InputInfoList::const_iterator 5452 it = Inputs.begin(), ie = Inputs.end(); it != ie; ++it) { 5453 const InputInfo &II = *it; 5454 CmdArgs.push_back(II.getFilename()); 5455 } 5456 5457 const char *Exec = 5458 Args.MakeArgString(getToolChain().GetProgramPath("as")); 5459 C.addCommand(new Command(JA, *this, Exec, CmdArgs)); 5460} 5461 5462void openbsd::Link::ConstructJob(Compilation &C, const JobAction &JA, 5463 const InputInfo &Output, 5464 const InputInfoList &Inputs, 5465 const ArgList &Args, 5466 const char *LinkingOutput) const { 5467 const Driver &D = getToolChain().getDriver(); 5468 ArgStringList CmdArgs; 5469 5470 // Silence warning for "clang -g foo.o -o foo" 5471 Args.ClaimAllArgs(options::OPT_g_Group); 5472 // and "clang -emit-llvm foo.o -o foo" 5473 Args.ClaimAllArgs(options::OPT_emit_llvm); 5474 // and for "clang -w foo.o -o foo". Other warning options are already 5475 // handled somewhere else. 5476 Args.ClaimAllArgs(options::OPT_w); 5477 5478 if (getToolChain().getArch() == llvm::Triple::mips64) 5479 CmdArgs.push_back("-EB"); 5480 else if (getToolChain().getArch() == llvm::Triple::mips64el) 5481 CmdArgs.push_back("-EL"); 5482 5483 if ((!Args.hasArg(options::OPT_nostdlib)) && 5484 (!Args.hasArg(options::OPT_shared))) { 5485 CmdArgs.push_back("-e"); 5486 CmdArgs.push_back("__start"); 5487 } 5488 5489 if (Args.hasArg(options::OPT_static)) { 5490 CmdArgs.push_back("-Bstatic"); 5491 } else { 5492 if (Args.hasArg(options::OPT_rdynamic)) 5493 CmdArgs.push_back("-export-dynamic"); 5494 CmdArgs.push_back("--eh-frame-hdr"); 5495 CmdArgs.push_back("-Bdynamic"); 5496 if (Args.hasArg(options::OPT_shared)) { 5497 CmdArgs.push_back("-shared"); 5498 } else { 5499 CmdArgs.push_back("-dynamic-linker"); 5500 CmdArgs.push_back("/usr/libexec/ld.so"); 5501 } 5502 } 5503 5504 if (Args.hasArg(options::OPT_nopie)) 5505 CmdArgs.push_back("-nopie"); 5506 5507 if (Output.isFilename()) { 5508 CmdArgs.push_back("-o"); 5509 CmdArgs.push_back(Output.getFilename()); 5510 } else { 5511 assert(Output.isNothing() && "Invalid output."); 5512 } 5513 5514 if (!Args.hasArg(options::OPT_nostdlib) && 5515 !Args.hasArg(options::OPT_nostartfiles)) { 5516 if (!Args.hasArg(options::OPT_shared)) { 5517 if (Args.hasArg(options::OPT_pg)) 5518 CmdArgs.push_back(Args.MakeArgString( 5519 getToolChain().GetFilePath("gcrt0.o"))); 5520 else 5521 CmdArgs.push_back(Args.MakeArgString( 5522 getToolChain().GetFilePath("crt0.o"))); 5523 CmdArgs.push_back(Args.MakeArgString( 5524 getToolChain().GetFilePath("crtbegin.o"))); 5525 } else { 5526 CmdArgs.push_back(Args.MakeArgString( 5527 getToolChain().GetFilePath("crtbeginS.o"))); 5528 } 5529 } 5530 5531 std::string Triple = getToolChain().getTripleString(); 5532 if (Triple.substr(0, 6) == "x86_64") 5533 Triple.replace(0, 6, "amd64"); 5534 CmdArgs.push_back(Args.MakeArgString("-L/usr/lib/gcc-lib/" + Triple + 5535 "/4.2.1")); 5536 5537 Args.AddAllArgs(CmdArgs, options::OPT_L); 5538 Args.AddAllArgs(CmdArgs, options::OPT_T_Group); 5539 Args.AddAllArgs(CmdArgs, options::OPT_e); 5540 Args.AddAllArgs(CmdArgs, options::OPT_s); 5541 Args.AddAllArgs(CmdArgs, options::OPT_t); 5542 Args.AddAllArgs(CmdArgs, options::OPT_Z_Flag); 5543 Args.AddAllArgs(CmdArgs, options::OPT_r); 5544 5545 AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs); 5546 5547 if (!Args.hasArg(options::OPT_nostdlib) && 5548 !Args.hasArg(options::OPT_nodefaultlibs)) { 5549 if (D.CCCIsCXX()) { 5550 getToolChain().AddCXXStdlibLibArgs(Args, CmdArgs); 5551 if (Args.hasArg(options::OPT_pg)) 5552 CmdArgs.push_back("-lm_p"); 5553 else 5554 CmdArgs.push_back("-lm"); 5555 } 5556 5557 // FIXME: For some reason GCC passes -lgcc before adding 5558 // the default system libraries. Just mimic this for now. 5559 CmdArgs.push_back("-lgcc"); 5560 5561 if (Args.hasArg(options::OPT_pthread)) { 5562 if (!Args.hasArg(options::OPT_shared) && 5563 Args.hasArg(options::OPT_pg)) 5564 CmdArgs.push_back("-lpthread_p"); 5565 else 5566 CmdArgs.push_back("-lpthread"); 5567 } 5568 5569 if (!Args.hasArg(options::OPT_shared)) { 5570 if (Args.hasArg(options::OPT_pg)) 5571 CmdArgs.push_back("-lc_p"); 5572 else 5573 CmdArgs.push_back("-lc"); 5574 } 5575 5576 CmdArgs.push_back("-lgcc"); 5577 } 5578 5579 if (!Args.hasArg(options::OPT_nostdlib) && 5580 !Args.hasArg(options::OPT_nostartfiles)) { 5581 if (!Args.hasArg(options::OPT_shared)) 5582 CmdArgs.push_back(Args.MakeArgString( 5583 getToolChain().GetFilePath("crtend.o"))); 5584 else 5585 CmdArgs.push_back(Args.MakeArgString( 5586 getToolChain().GetFilePath("crtendS.o"))); 5587 } 5588 5589 const char *Exec = 5590 Args.MakeArgString(getToolChain().GetProgramPath("ld")); 5591 C.addCommand(new Command(JA, *this, Exec, CmdArgs)); 5592} 5593 5594void bitrig::Assemble::ConstructJob(Compilation &C, const JobAction &JA, 5595 const InputInfo &Output, 5596 const InputInfoList &Inputs, 5597 const ArgList &Args, 5598 const char *LinkingOutput) const { 5599 ArgStringList CmdArgs; 5600 5601 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, 5602 options::OPT_Xassembler); 5603 5604 CmdArgs.push_back("-o"); 5605 CmdArgs.push_back(Output.getFilename()); 5606 5607 for (InputInfoList::const_iterator 5608 it = Inputs.begin(), ie = Inputs.end(); it != ie; ++it) { 5609 const InputInfo &II = *it; 5610 CmdArgs.push_back(II.getFilename()); 5611 } 5612 5613 const char *Exec = 5614 Args.MakeArgString(getToolChain().GetProgramPath("as")); 5615 C.addCommand(new Command(JA, *this, Exec, CmdArgs)); 5616} 5617 5618void bitrig::Link::ConstructJob(Compilation &C, const JobAction &JA, 5619 const InputInfo &Output, 5620 const InputInfoList &Inputs, 5621 const ArgList &Args, 5622 const char *LinkingOutput) const { 5623 const Driver &D = getToolChain().getDriver(); 5624 ArgStringList CmdArgs; 5625 5626 if ((!Args.hasArg(options::OPT_nostdlib)) && 5627 (!Args.hasArg(options::OPT_shared))) { 5628 CmdArgs.push_back("-e"); 5629 CmdArgs.push_back("__start"); 5630 } 5631 5632 if (Args.hasArg(options::OPT_static)) { 5633 CmdArgs.push_back("-Bstatic"); 5634 } else { 5635 if (Args.hasArg(options::OPT_rdynamic)) 5636 CmdArgs.push_back("-export-dynamic"); 5637 CmdArgs.push_back("--eh-frame-hdr"); 5638 CmdArgs.push_back("-Bdynamic"); 5639 if (Args.hasArg(options::OPT_shared)) { 5640 CmdArgs.push_back("-shared"); 5641 } else { 5642 CmdArgs.push_back("-dynamic-linker"); 5643 CmdArgs.push_back("/usr/libexec/ld.so"); 5644 } 5645 } 5646 5647 if (Output.isFilename()) { 5648 CmdArgs.push_back("-o"); 5649 CmdArgs.push_back(Output.getFilename()); 5650 } else { 5651 assert(Output.isNothing() && "Invalid output."); 5652 } 5653 5654 if (!Args.hasArg(options::OPT_nostdlib) && 5655 !Args.hasArg(options::OPT_nostartfiles)) { 5656 if (!Args.hasArg(options::OPT_shared)) { 5657 if (Args.hasArg(options::OPT_pg)) 5658 CmdArgs.push_back(Args.MakeArgString( 5659 getToolChain().GetFilePath("gcrt0.o"))); 5660 else 5661 CmdArgs.push_back(Args.MakeArgString( 5662 getToolChain().GetFilePath("crt0.o"))); 5663 CmdArgs.push_back(Args.MakeArgString( 5664 getToolChain().GetFilePath("crtbegin.o"))); 5665 } else { 5666 CmdArgs.push_back(Args.MakeArgString( 5667 getToolChain().GetFilePath("crtbeginS.o"))); 5668 } 5669 } 5670 5671 Args.AddAllArgs(CmdArgs, options::OPT_L); 5672 Args.AddAllArgs(CmdArgs, options::OPT_T_Group); 5673 Args.AddAllArgs(CmdArgs, options::OPT_e); 5674 5675 AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs); 5676 5677 if (!Args.hasArg(options::OPT_nostdlib) && 5678 !Args.hasArg(options::OPT_nodefaultlibs)) { 5679 if (D.CCCIsCXX()) { 5680 getToolChain().AddCXXStdlibLibArgs(Args, CmdArgs); 5681 if (Args.hasArg(options::OPT_pg)) 5682 CmdArgs.push_back("-lm_p"); 5683 else 5684 CmdArgs.push_back("-lm"); 5685 } 5686 5687 if (Args.hasArg(options::OPT_pthread)) { 5688 if (!Args.hasArg(options::OPT_shared) && 5689 Args.hasArg(options::OPT_pg)) 5690 CmdArgs.push_back("-lpthread_p"); 5691 else 5692 CmdArgs.push_back("-lpthread"); 5693 } 5694 5695 if (!Args.hasArg(options::OPT_shared)) { 5696 if (Args.hasArg(options::OPT_pg)) 5697 CmdArgs.push_back("-lc_p"); 5698 else 5699 CmdArgs.push_back("-lc"); 5700 } 5701 5702 StringRef MyArch; 5703 switch (getToolChain().getTriple().getArch()) { 5704 case llvm::Triple::arm: 5705 MyArch = "arm"; 5706 break; 5707 case llvm::Triple::x86: 5708 MyArch = "i386"; 5709 break; 5710 case llvm::Triple::x86_64: 5711 MyArch = "amd64"; 5712 break; 5713 default: 5714 llvm_unreachable("Unsupported architecture"); 5715 } 5716 CmdArgs.push_back(Args.MakeArgString("-lclang_rt." + MyArch)); 5717 } 5718 5719 if (!Args.hasArg(options::OPT_nostdlib) && 5720 !Args.hasArg(options::OPT_nostartfiles)) { 5721 if (!Args.hasArg(options::OPT_shared)) 5722 CmdArgs.push_back(Args.MakeArgString( 5723 getToolChain().GetFilePath("crtend.o"))); 5724 else 5725 CmdArgs.push_back(Args.MakeArgString( 5726 getToolChain().GetFilePath("crtendS.o"))); 5727 } 5728 5729 const char *Exec = 5730 Args.MakeArgString(getToolChain().GetProgramPath("ld")); 5731 C.addCommand(new Command(JA, *this, Exec, CmdArgs)); 5732} 5733 5734void freebsd::Assemble::ConstructJob(Compilation &C, const JobAction &JA, 5735 const InputInfo &Output, 5736 const InputInfoList &Inputs, 5737 const ArgList &Args, 5738 const char *LinkingOutput) const { 5739 ArgStringList CmdArgs; 5740 5741 // When building 32-bit code on FreeBSD/amd64, we have to explicitly 5742 // instruct as in the base system to assemble 32-bit code. 5743 if (getToolChain().getArch() == llvm::Triple::x86) 5744 CmdArgs.push_back("--32"); 5745 else if (getToolChain().getArch() == llvm::Triple::ppc) 5746 CmdArgs.push_back("-a32"); 5747 else if (getToolChain().getArch() == llvm::Triple::mips || 5748 getToolChain().getArch() == llvm::Triple::mipsel || 5749 getToolChain().getArch() == llvm::Triple::mips64 || 5750 getToolChain().getArch() == llvm::Triple::mips64el) { 5751 StringRef CPUName; 5752 StringRef ABIName; 5753 getMipsCPUAndABI(Args, getToolChain().getTriple(), CPUName, ABIName); 5754 5755 CmdArgs.push_back("-march"); 5756 CmdArgs.push_back(CPUName.data()); 5757 5758 CmdArgs.push_back("-mabi"); 5759 CmdArgs.push_back(getGnuCompatibleMipsABIName(ABIName).data()); 5760 5761 if (getToolChain().getArch() == llvm::Triple::mips || 5762 getToolChain().getArch() == llvm::Triple::mips64) 5763 CmdArgs.push_back("-EB"); 5764 else 5765 CmdArgs.push_back("-EL"); 5766 5767 Arg *LastPICArg = Args.getLastArg(options::OPT_fPIC, options::OPT_fno_PIC, 5768 options::OPT_fpic, options::OPT_fno_pic, 5769 options::OPT_fPIE, options::OPT_fno_PIE, 5770 options::OPT_fpie, options::OPT_fno_pie); 5771 if (LastPICArg && 5772 (LastPICArg->getOption().matches(options::OPT_fPIC) || 5773 LastPICArg->getOption().matches(options::OPT_fpic) || 5774 LastPICArg->getOption().matches(options::OPT_fPIE) || 5775 LastPICArg->getOption().matches(options::OPT_fpie))) { 5776 CmdArgs.push_back("-KPIC"); 5777 } 5778 } else if (getToolChain().getArch() == llvm::Triple::arm || 5779 getToolChain().getArch() == llvm::Triple::thumb) { 5780 CmdArgs.push_back("-mfpu=softvfp"); 5781 switch(getToolChain().getTriple().getEnvironment()) { 5782 case llvm::Triple::GNUEABI: 5783 case llvm::Triple::EABI: 5784 CmdArgs.push_back("-meabi=5"); 5785 break; 5786 5787 default: 5788 CmdArgs.push_back("-matpcs"); 5789 } 5790 } else if (getToolChain().getArch() == llvm::Triple::sparc || 5791 getToolChain().getArch() == llvm::Triple::sparcv9) { 5792 if (getToolChain().getArch() == llvm::Triple::sparc) 5793 CmdArgs.push_back("-Av8plusa"); 5794 else 5795 CmdArgs.push_back("-Av9a"); 5796 5797 Arg *LastPICArg = Args.getLastArg(options::OPT_fPIC, options::OPT_fno_PIC, 5798 options::OPT_fpic, options::OPT_fno_pic, 5799 options::OPT_fPIE, options::OPT_fno_PIE, 5800 options::OPT_fpie, options::OPT_fno_pie); 5801 if (LastPICArg && 5802 (LastPICArg->getOption().matches(options::OPT_fPIC) || 5803 LastPICArg->getOption().matches(options::OPT_fpic) || 5804 LastPICArg->getOption().matches(options::OPT_fPIE) || 5805 LastPICArg->getOption().matches(options::OPT_fpie))) { 5806 CmdArgs.push_back("-KPIC"); 5807 } 5808 } 5809 5810 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, 5811 options::OPT_Xassembler); 5812 5813 CmdArgs.push_back("-o"); 5814 CmdArgs.push_back(Output.getFilename()); 5815 5816 for (InputInfoList::const_iterator 5817 it = Inputs.begin(), ie = Inputs.end(); it != ie; ++it) { 5818 const InputInfo &II = *it; 5819 CmdArgs.push_back(II.getFilename()); 5820 } 5821 5822 const char *Exec = 5823 Args.MakeArgString(getToolChain().GetProgramPath("as")); 5824 C.addCommand(new Command(JA, *this, Exec, CmdArgs)); 5825} 5826 5827void freebsd::Link::ConstructJob(Compilation &C, const JobAction &JA, 5828 const InputInfo &Output, 5829 const InputInfoList &Inputs, 5830 const ArgList &Args, 5831 const char *LinkingOutput) const { 5832 const toolchains::FreeBSD& ToolChain = 5833 static_cast<const toolchains::FreeBSD&>(getToolChain()); 5834 const Driver &D = ToolChain.getDriver(); 5835 ArgStringList CmdArgs; 5836 5837 // Silence warning for "clang -g foo.o -o foo" 5838 Args.ClaimAllArgs(options::OPT_g_Group); 5839 // and "clang -emit-llvm foo.o -o foo" 5840 Args.ClaimAllArgs(options::OPT_emit_llvm); 5841 // and for "clang -w foo.o -o foo". Other warning options are already 5842 // handled somewhere else. 5843 Args.ClaimAllArgs(options::OPT_w); 5844 5845 if (!D.SysRoot.empty()) 5846 CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot)); 5847 5848 if (Args.hasArg(options::OPT_pie)) 5849 CmdArgs.push_back("-pie"); 5850 5851 if (Args.hasArg(options::OPT_static)) { 5852 CmdArgs.push_back("-Bstatic"); 5853 } else { 5854 if (Args.hasArg(options::OPT_rdynamic)) 5855 CmdArgs.push_back("-export-dynamic"); 5856 CmdArgs.push_back("--eh-frame-hdr"); 5857 if (Args.hasArg(options::OPT_shared)) { 5858 CmdArgs.push_back("-Bshareable"); 5859 } else { 5860 CmdArgs.push_back("-dynamic-linker"); 5861 CmdArgs.push_back("/libexec/ld-elf.so.1"); 5862 } 5863 if (ToolChain.getTriple().getOSMajorVersion() >= 9) { 5864 llvm::Triple::ArchType Arch = ToolChain.getArch(); 5865 if (Arch == llvm::Triple::arm || Arch == llvm::Triple::sparc || 5866 Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64) { 5867 CmdArgs.push_back("--hash-style=both"); 5868 } 5869 } 5870 CmdArgs.push_back("--enable-new-dtags"); 5871 } 5872 5873 // When building 32-bit code on FreeBSD/amd64, we have to explicitly 5874 // instruct ld in the base system to link 32-bit code. 5875 if (ToolChain.getArch() == llvm::Triple::x86) { 5876 CmdArgs.push_back("-m"); 5877 CmdArgs.push_back("elf_i386_fbsd"); 5878 } 5879 5880 if (ToolChain.getArch() == llvm::Triple::ppc) { 5881 CmdArgs.push_back("-m"); 5882 CmdArgs.push_back("elf32ppc_fbsd"); 5883 } 5884 5885 if (Output.isFilename()) { 5886 CmdArgs.push_back("-o"); 5887 CmdArgs.push_back(Output.getFilename()); 5888 } else { 5889 assert(Output.isNothing() && "Invalid output."); 5890 } 5891 5892 if (!Args.hasArg(options::OPT_nostdlib) && 5893 !Args.hasArg(options::OPT_nostartfiles)) { 5894 const char *crt1 = NULL; 5895 if (!Args.hasArg(options::OPT_shared)) { 5896 if (Args.hasArg(options::OPT_pg)) 5897 crt1 = "gcrt1.o"; 5898 else if (Args.hasArg(options::OPT_pie)) 5899 crt1 = "Scrt1.o"; 5900 else 5901 crt1 = "crt1.o"; 5902 } 5903 if (crt1) 5904 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crt1))); 5905 5906 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o"))); 5907 5908 const char *crtbegin = NULL; 5909 if (Args.hasArg(options::OPT_static)) 5910 crtbegin = "crtbeginT.o"; 5911 else if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_pie)) 5912 crtbegin = "crtbeginS.o"; 5913 else 5914 crtbegin = "crtbegin.o"; 5915 5916 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crtbegin))); 5917 } 5918 5919 Args.AddAllArgs(CmdArgs, options::OPT_L); 5920 const ToolChain::path_list Paths = ToolChain.getFilePaths(); 5921 for (ToolChain::path_list::const_iterator i = Paths.begin(), e = Paths.end(); 5922 i != e; ++i) 5923 CmdArgs.push_back(Args.MakeArgString(StringRef("-L") + *i)); 5924 Args.AddAllArgs(CmdArgs, options::OPT_T_Group); 5925 Args.AddAllArgs(CmdArgs, options::OPT_e); 5926 Args.AddAllArgs(CmdArgs, options::OPT_s); 5927 Args.AddAllArgs(CmdArgs, options::OPT_t); 5928 Args.AddAllArgs(CmdArgs, options::OPT_Z_Flag); 5929 Args.AddAllArgs(CmdArgs, options::OPT_r); 5930 5931 // Tell the linker to load the plugin. This has to come before AddLinkerInputs 5932 // as gold requires -plugin to come before any -plugin-opt that -Wl might 5933 // forward. 5934 if (D.IsUsingLTO(Args)) { 5935 CmdArgs.push_back("-plugin"); 5936 std::string Plugin = ToolChain.getDriver().Dir + "/../lib/LLVMgold.so"; 5937 CmdArgs.push_back(Args.MakeArgString(Plugin)); 5938 5939 // Try to pass driver level flags relevant to LTO code generation down to 5940 // the plugin. 5941 5942 // Handle flags for selecting CPU variants. 5943 std::string CPU = getCPUName(Args, ToolChain.getTriple()); 5944 if (!CPU.empty()) { 5945 CmdArgs.push_back( 5946 Args.MakeArgString(Twine("-plugin-opt=mcpu=") + 5947 CPU)); 5948 } 5949 } 5950 5951 AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs); 5952 5953 if (!Args.hasArg(options::OPT_nostdlib) && 5954 !Args.hasArg(options::OPT_nodefaultlibs)) { 5955 if (D.CCCIsCXX()) { 5956 ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs); 5957 if (Args.hasArg(options::OPT_pg)) 5958 CmdArgs.push_back("-lm_p"); 5959 else 5960 CmdArgs.push_back("-lm"); 5961 } 5962 // FIXME: For some reason GCC passes -lgcc and -lgcc_s before adding 5963 // the default system libraries. Just mimic this for now. 5964 if (Args.hasArg(options::OPT_pg)) 5965 CmdArgs.push_back("-lgcc_p"); 5966 else 5967 CmdArgs.push_back("-lgcc"); 5968 if (Args.hasArg(options::OPT_static)) { 5969 CmdArgs.push_back("-lgcc_eh"); 5970 } else if (Args.hasArg(options::OPT_pg)) { 5971 CmdArgs.push_back("-lgcc_eh_p"); 5972 } else { 5973 CmdArgs.push_back("--as-needed"); 5974 CmdArgs.push_back("-lgcc_s"); 5975 CmdArgs.push_back("--no-as-needed"); 5976 } 5977 5978 if (Args.hasArg(options::OPT_pthread)) { 5979 if (Args.hasArg(options::OPT_pg)) 5980 CmdArgs.push_back("-lpthread_p"); 5981 else 5982 CmdArgs.push_back("-lpthread"); 5983 } 5984 5985 if (Args.hasArg(options::OPT_pg)) { 5986 if (Args.hasArg(options::OPT_shared)) 5987 CmdArgs.push_back("-lc"); 5988 else 5989 CmdArgs.push_back("-lc_p"); 5990 CmdArgs.push_back("-lgcc_p"); 5991 } else { 5992 CmdArgs.push_back("-lc"); 5993 CmdArgs.push_back("-lgcc"); 5994 } 5995 5996 if (Args.hasArg(options::OPT_static)) { 5997 CmdArgs.push_back("-lgcc_eh"); 5998 } else if (Args.hasArg(options::OPT_pg)) { 5999 CmdArgs.push_back("-lgcc_eh_p"); 6000 } else { 6001 CmdArgs.push_back("--as-needed"); 6002 CmdArgs.push_back("-lgcc_s"); 6003 CmdArgs.push_back("--no-as-needed"); 6004 } 6005 } 6006 6007 if (!Args.hasArg(options::OPT_nostdlib) && 6008 !Args.hasArg(options::OPT_nostartfiles)) { 6009 if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_pie)) 6010 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtendS.o"))); 6011 else 6012 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtend.o"))); 6013 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o"))); 6014 } 6015 6016 addProfileRT(ToolChain, Args, CmdArgs, ToolChain.getTriple()); 6017 6018 const char *Exec = 6019 Args.MakeArgString(ToolChain.GetProgramPath("ld")); 6020 C.addCommand(new Command(JA, *this, Exec, CmdArgs)); 6021} 6022 6023void netbsd::Assemble::ConstructJob(Compilation &C, const JobAction &JA, 6024 const InputInfo &Output, 6025 const InputInfoList &Inputs, 6026 const ArgList &Args, 6027 const char *LinkingOutput) const { 6028 ArgStringList CmdArgs; 6029 6030 // When building 32-bit code on NetBSD/amd64, we have to explicitly 6031 // instruct as in the base system to assemble 32-bit code. 6032 if (getToolChain().getArch() == llvm::Triple::x86) 6033 CmdArgs.push_back("--32"); 6034 6035 // Pass the target CPU to GNU as for ARM, since the source code might 6036 // not have the correct .cpu annotation. 6037 if (getToolChain().getArch() == llvm::Triple::arm) { 6038 std::string MArch(getARMTargetCPU(Args, getToolChain().getTriple())); 6039 CmdArgs.push_back(Args.MakeArgString("-mcpu=" + MArch)); 6040 } 6041 6042 if (getToolChain().getArch() == llvm::Triple::mips || 6043 getToolChain().getArch() == llvm::Triple::mipsel || 6044 getToolChain().getArch() == llvm::Triple::mips64 || 6045 getToolChain().getArch() == llvm::Triple::mips64el) { 6046 StringRef CPUName; 6047 StringRef ABIName; 6048 getMipsCPUAndABI(Args, getToolChain().getTriple(), CPUName, ABIName); 6049 6050 CmdArgs.push_back("-march"); 6051 CmdArgs.push_back(CPUName.data()); 6052 6053 CmdArgs.push_back("-mabi"); 6054 CmdArgs.push_back(getGnuCompatibleMipsABIName(ABIName).data()); 6055 6056 if (getToolChain().getArch() == llvm::Triple::mips || 6057 getToolChain().getArch() == llvm::Triple::mips64) 6058 CmdArgs.push_back("-EB"); 6059 else 6060 CmdArgs.push_back("-EL"); 6061 6062 Arg *LastPICArg = Args.getLastArg(options::OPT_fPIC, options::OPT_fno_PIC, 6063 options::OPT_fpic, options::OPT_fno_pic, 6064 options::OPT_fPIE, options::OPT_fno_PIE, 6065 options::OPT_fpie, options::OPT_fno_pie); 6066 if (LastPICArg && 6067 (LastPICArg->getOption().matches(options::OPT_fPIC) || 6068 LastPICArg->getOption().matches(options::OPT_fpic) || 6069 LastPICArg->getOption().matches(options::OPT_fPIE) || 6070 LastPICArg->getOption().matches(options::OPT_fpie))) { 6071 CmdArgs.push_back("-KPIC"); 6072 } 6073 } 6074 6075 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, 6076 options::OPT_Xassembler); 6077 6078 CmdArgs.push_back("-o"); 6079 CmdArgs.push_back(Output.getFilename()); 6080 6081 for (InputInfoList::const_iterator 6082 it = Inputs.begin(), ie = Inputs.end(); it != ie; ++it) { 6083 const InputInfo &II = *it; 6084 CmdArgs.push_back(II.getFilename()); 6085 } 6086 6087 const char *Exec = Args.MakeArgString((getToolChain().GetProgramPath("as"))); 6088 C.addCommand(new Command(JA, *this, Exec, CmdArgs)); 6089} 6090 6091void netbsd::Link::ConstructJob(Compilation &C, const JobAction &JA, 6092 const InputInfo &Output, 6093 const InputInfoList &Inputs, 6094 const ArgList &Args, 6095 const char *LinkingOutput) const { 6096 const Driver &D = getToolChain().getDriver(); 6097 ArgStringList CmdArgs; 6098 6099 if (!D.SysRoot.empty()) 6100 CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot)); 6101 6102 if (Args.hasArg(options::OPT_static)) { 6103 CmdArgs.push_back("-Bstatic"); 6104 } else { 6105 if (Args.hasArg(options::OPT_rdynamic)) 6106 CmdArgs.push_back("-export-dynamic"); 6107 CmdArgs.push_back("--eh-frame-hdr"); 6108 if (Args.hasArg(options::OPT_shared)) { 6109 CmdArgs.push_back("-Bshareable"); 6110 } else { 6111 CmdArgs.push_back("-dynamic-linker"); 6112 CmdArgs.push_back("/libexec/ld.elf_so"); 6113 } 6114 } 6115 6116 // When building 32-bit code on NetBSD/amd64, we have to explicitly 6117 // instruct ld in the base system to link 32-bit code. 6118 if (getToolChain().getArch() == llvm::Triple::x86) { 6119 CmdArgs.push_back("-m"); 6120 CmdArgs.push_back("elf_i386"); 6121 } 6122 6123 if (Output.isFilename()) { 6124 CmdArgs.push_back("-o"); 6125 CmdArgs.push_back(Output.getFilename()); 6126 } else { 6127 assert(Output.isNothing() && "Invalid output."); 6128 } 6129 6130 if (!Args.hasArg(options::OPT_nostdlib) && 6131 !Args.hasArg(options::OPT_nostartfiles)) { 6132 if (!Args.hasArg(options::OPT_shared)) { 6133 CmdArgs.push_back(Args.MakeArgString( 6134 getToolChain().GetFilePath("crt0.o"))); 6135 CmdArgs.push_back(Args.MakeArgString( 6136 getToolChain().GetFilePath("crti.o"))); 6137 CmdArgs.push_back(Args.MakeArgString( 6138 getToolChain().GetFilePath("crtbegin.o"))); 6139 } else { 6140 CmdArgs.push_back(Args.MakeArgString( 6141 getToolChain().GetFilePath("crti.o"))); 6142 CmdArgs.push_back(Args.MakeArgString( 6143 getToolChain().GetFilePath("crtbeginS.o"))); 6144 } 6145 } 6146 6147 Args.AddAllArgs(CmdArgs, options::OPT_L); 6148 Args.AddAllArgs(CmdArgs, options::OPT_T_Group); 6149 Args.AddAllArgs(CmdArgs, options::OPT_e); 6150 Args.AddAllArgs(CmdArgs, options::OPT_s); 6151 Args.AddAllArgs(CmdArgs, options::OPT_t); 6152 Args.AddAllArgs(CmdArgs, options::OPT_Z_Flag); 6153 Args.AddAllArgs(CmdArgs, options::OPT_r); 6154 6155 AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs); 6156 6157 unsigned Major, Minor, Micro; 6158 getToolChain().getTriple().getOSVersion(Major, Minor, Micro); 6159 bool useLibgcc = true; 6160 if (Major >= 7 || (Major == 6 && Minor == 99 && Micro >= 23) || Major == 0) { 6161 if (getToolChain().getArch() == llvm::Triple::x86 || 6162 getToolChain().getArch() == llvm::Triple::x86_64) 6163 useLibgcc = false; 6164 } 6165 6166 if (!Args.hasArg(options::OPT_nostdlib) && 6167 !Args.hasArg(options::OPT_nodefaultlibs)) { 6168 if (D.CCCIsCXX()) { 6169 getToolChain().AddCXXStdlibLibArgs(Args, CmdArgs); 6170 CmdArgs.push_back("-lm"); 6171 } 6172 if (Args.hasArg(options::OPT_pthread)) 6173 CmdArgs.push_back("-lpthread"); 6174 CmdArgs.push_back("-lc"); 6175 6176 if (useLibgcc) { 6177 if (Args.hasArg(options::OPT_static)) { 6178 // libgcc_eh depends on libc, so resolve as much as possible, 6179 // pull in any new requirements from libc and then get the rest 6180 // of libgcc. 6181 CmdArgs.push_back("-lgcc_eh"); 6182 CmdArgs.push_back("-lc"); 6183 CmdArgs.push_back("-lgcc"); 6184 } else { 6185 CmdArgs.push_back("-lgcc"); 6186 CmdArgs.push_back("--as-needed"); 6187 CmdArgs.push_back("-lgcc_s"); 6188 CmdArgs.push_back("--no-as-needed"); 6189 } 6190 } 6191 } 6192 6193 if (!Args.hasArg(options::OPT_nostdlib) && 6194 !Args.hasArg(options::OPT_nostartfiles)) { 6195 if (!Args.hasArg(options::OPT_shared)) 6196 CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath( 6197 "crtend.o"))); 6198 else 6199 CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath( 6200 "crtendS.o"))); 6201 CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath( 6202 "crtn.o"))); 6203 } 6204 6205 addProfileRT(getToolChain(), Args, CmdArgs, getToolChain().getTriple()); 6206 6207 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("ld")); 6208 C.addCommand(new Command(JA, *this, Exec, CmdArgs)); 6209} 6210 6211void gnutools::Assemble::ConstructJob(Compilation &C, const JobAction &JA, 6212 const InputInfo &Output, 6213 const InputInfoList &Inputs, 6214 const ArgList &Args, 6215 const char *LinkingOutput) const { 6216 ArgStringList CmdArgs; 6217 bool NeedsKPIC = false; 6218 6219 // Add --32/--64 to make sure we get the format we want. 6220 // This is incomplete 6221 if (getToolChain().getArch() == llvm::Triple::x86) { 6222 CmdArgs.push_back("--32"); 6223 } else if (getToolChain().getArch() == llvm::Triple::x86_64) { 6224 CmdArgs.push_back("--64"); 6225 } else if (getToolChain().getArch() == llvm::Triple::ppc) { 6226 CmdArgs.push_back("-a32"); 6227 CmdArgs.push_back("-mppc"); 6228 CmdArgs.push_back("-many"); 6229 } else if (getToolChain().getArch() == llvm::Triple::ppc64) { 6230 CmdArgs.push_back("-a64"); 6231 CmdArgs.push_back("-mppc64"); 6232 CmdArgs.push_back("-many"); 6233 } else if (getToolChain().getArch() == llvm::Triple::ppc64le) { 6234 CmdArgs.push_back("-a64"); 6235 CmdArgs.push_back("-mppc64le"); 6236 CmdArgs.push_back("-many"); 6237 } else if (getToolChain().getArch() == llvm::Triple::sparc) { 6238 CmdArgs.push_back("-32"); 6239 CmdArgs.push_back("-Av8plusa"); 6240 NeedsKPIC = true; 6241 } else if (getToolChain().getArch() == llvm::Triple::sparcv9) { 6242 CmdArgs.push_back("-64"); 6243 CmdArgs.push_back("-Av9a"); 6244 NeedsKPIC = true; 6245 } else if (getToolChain().getArch() == llvm::Triple::arm) { 6246 StringRef MArch = getToolChain().getArchName(); 6247 if (MArch == "armv7" || MArch == "armv7a" || MArch == "armv7-a") 6248 CmdArgs.push_back("-mfpu=neon"); 6249 if (MArch == "armv8" || MArch == "armv8a" || MArch == "armv8-a") 6250 CmdArgs.push_back("-mfpu=crypto-neon-fp-armv8"); 6251 6252 StringRef ARMFloatABI = getARMFloatABI(getToolChain().getDriver(), Args, 6253 getToolChain().getTriple()); 6254 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=" + ARMFloatABI)); 6255 6256 Args.AddLastArg(CmdArgs, options::OPT_march_EQ); 6257 Args.AddLastArg(CmdArgs, options::OPT_mcpu_EQ); 6258 Args.AddLastArg(CmdArgs, options::OPT_mfpu_EQ); 6259 } else if (getToolChain().getArch() == llvm::Triple::mips || 6260 getToolChain().getArch() == llvm::Triple::mipsel || 6261 getToolChain().getArch() == llvm::Triple::mips64 || 6262 getToolChain().getArch() == llvm::Triple::mips64el) { 6263 StringRef CPUName; 6264 StringRef ABIName; 6265 getMipsCPUAndABI(Args, getToolChain().getTriple(), CPUName, ABIName); 6266 6267 CmdArgs.push_back("-march"); 6268 CmdArgs.push_back(CPUName.data()); 6269 6270 CmdArgs.push_back("-mabi"); 6271 CmdArgs.push_back(getGnuCompatibleMipsABIName(ABIName).data()); 6272 6273 if (getToolChain().getArch() == llvm::Triple::mips || 6274 getToolChain().getArch() == llvm::Triple::mips64) 6275 CmdArgs.push_back("-EB"); 6276 else 6277 CmdArgs.push_back("-EL"); 6278 6279 if (Arg *A = Args.getLastArg(options::OPT_mnan_EQ)) { 6280 if (StringRef(A->getValue()) == "2008") 6281 CmdArgs.push_back(Args.MakeArgString("-mnan=2008")); 6282 } 6283 6284 if (Arg *A = Args.getLastArg(options::OPT_mfp32, options::OPT_mfp64)) { 6285 if (A->getOption().matches(options::OPT_mfp32)) 6286 CmdArgs.push_back(Args.MakeArgString("-mfp32")); 6287 else 6288 CmdArgs.push_back(Args.MakeArgString("-mfp64")); 6289 } 6290 6291 Args.AddLastArg(CmdArgs, options::OPT_mips16, options::OPT_mno_mips16); 6292 Args.AddLastArg(CmdArgs, options::OPT_mmicromips, 6293 options::OPT_mno_micromips); 6294 Args.AddLastArg(CmdArgs, options::OPT_mdsp, options::OPT_mno_dsp); 6295 Args.AddLastArg(CmdArgs, options::OPT_mdspr2, options::OPT_mno_dspr2); 6296 6297 if (Arg *A = Args.getLastArg(options::OPT_mmsa, options::OPT_mno_msa)) { 6298 // Do not use AddLastArg because not all versions of MIPS assembler 6299 // support -mmsa / -mno-msa options. 6300 if (A->getOption().matches(options::OPT_mmsa)) 6301 CmdArgs.push_back(Args.MakeArgString("-mmsa")); 6302 } 6303 6304 NeedsKPIC = true; 6305 } else if (getToolChain().getArch() == llvm::Triple::systemz) { 6306 // Always pass an -march option, since our default of z10 is later 6307 // than the GNU assembler's default. 6308 StringRef CPUName = getSystemZTargetCPU(Args); 6309 CmdArgs.push_back(Args.MakeArgString("-march=" + CPUName)); 6310 } 6311 6312 if (NeedsKPIC) { 6313 Arg *LastPICArg = Args.getLastArg(options::OPT_fPIC, options::OPT_fno_PIC, 6314 options::OPT_fpic, options::OPT_fno_pic, 6315 options::OPT_fPIE, options::OPT_fno_PIE, 6316 options::OPT_fpie, options::OPT_fno_pie); 6317 if (LastPICArg && 6318 (LastPICArg->getOption().matches(options::OPT_fPIC) || 6319 LastPICArg->getOption().matches(options::OPT_fpic) || 6320 LastPICArg->getOption().matches(options::OPT_fPIE) || 6321 LastPICArg->getOption().matches(options::OPT_fpie))) { 6322 CmdArgs.push_back("-KPIC"); 6323 } 6324 } 6325 6326 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, 6327 options::OPT_Xassembler); 6328 6329 CmdArgs.push_back("-o"); 6330 CmdArgs.push_back(Output.getFilename()); 6331 6332 for (InputInfoList::const_iterator 6333 it = Inputs.begin(), ie = Inputs.end(); it != ie; ++it) { 6334 const InputInfo &II = *it; 6335 CmdArgs.push_back(II.getFilename()); 6336 } 6337 6338 const char *Exec = 6339 Args.MakeArgString(getToolChain().GetProgramPath("as")); 6340 C.addCommand(new Command(JA, *this, Exec, CmdArgs)); 6341 6342 // Handle the debug info splitting at object creation time if we're 6343 // creating an object. 6344 // TODO: Currently only works on linux with newer objcopy. 6345 if (Args.hasArg(options::OPT_gsplit_dwarf) && 6346 getToolChain().getTriple().isOSLinux()) 6347 SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output, 6348 SplitDebugName(Args, Inputs)); 6349} 6350 6351static void AddLibgcc(llvm::Triple Triple, const Driver &D, 6352 ArgStringList &CmdArgs, const ArgList &Args) { 6353 bool isAndroid = Triple.getEnvironment() == llvm::Triple::Android; 6354 bool StaticLibgcc = Args.hasArg(options::OPT_static_libgcc) || 6355 Args.hasArg(options::OPT_static); 6356 if (!D.CCCIsCXX()) 6357 CmdArgs.push_back("-lgcc"); 6358 6359 if (StaticLibgcc || isAndroid) { 6360 if (D.CCCIsCXX()) 6361 CmdArgs.push_back("-lgcc"); 6362 } else { 6363 if (!D.CCCIsCXX()) 6364 CmdArgs.push_back("--as-needed"); 6365 CmdArgs.push_back("-lgcc_s"); 6366 if (!D.CCCIsCXX()) 6367 CmdArgs.push_back("--no-as-needed"); 6368 } 6369 6370 if (StaticLibgcc && !isAndroid) 6371 CmdArgs.push_back("-lgcc_eh"); 6372 else if (!Args.hasArg(options::OPT_shared) && D.CCCIsCXX()) 6373 CmdArgs.push_back("-lgcc"); 6374 6375 // According to Android ABI, we have to link with libdl if we are 6376 // linking with non-static libgcc. 6377 // 6378 // NOTE: This fixes a link error on Android MIPS as well. The non-static 6379 // libgcc for MIPS relies on _Unwind_Find_FDE and dl_iterate_phdr from libdl. 6380 if (isAndroid && !StaticLibgcc) 6381 CmdArgs.push_back("-ldl"); 6382} 6383 6384static bool hasMipsN32ABIArg(const ArgList &Args) { 6385 Arg *A = Args.getLastArg(options::OPT_mabi_EQ); 6386 return A && (A->getValue() == StringRef("n32")); 6387} 6388 6389static StringRef getLinuxDynamicLinker(const ArgList &Args, 6390 const toolchains::Linux &ToolChain) { 6391 if (ToolChain.getTriple().getEnvironment() == llvm::Triple::Android) 6392 return "/system/bin/linker"; 6393 else if (ToolChain.getArch() == llvm::Triple::x86 || 6394 ToolChain.getArch() == llvm::Triple::sparc) 6395 return "/lib/ld-linux.so.2"; 6396 else if (ToolChain.getArch() == llvm::Triple::aarch64) 6397 return "/lib/ld-linux-aarch64.so.1"; 6398 else if (ToolChain.getArch() == llvm::Triple::arm || 6399 ToolChain.getArch() == llvm::Triple::thumb) { 6400 if (ToolChain.getTriple().getEnvironment() == llvm::Triple::GNUEABIHF) 6401 return "/lib/ld-linux-armhf.so.3"; 6402 else 6403 return "/lib/ld-linux.so.3"; 6404 } else if (ToolChain.getArch() == llvm::Triple::mips || 6405 ToolChain.getArch() == llvm::Triple::mipsel) 6406 return "/lib/ld.so.1"; 6407 else if (ToolChain.getArch() == llvm::Triple::mips64 || 6408 ToolChain.getArch() == llvm::Triple::mips64el) { 6409 if (hasMipsN32ABIArg(Args)) 6410 return "/lib32/ld.so.1"; 6411 else 6412 return "/lib64/ld.so.1"; 6413 } else if (ToolChain.getArch() == llvm::Triple::ppc) 6414 return "/lib/ld.so.1"; 6415 else if (ToolChain.getArch() == llvm::Triple::ppc64 || 6416 ToolChain.getArch() == llvm::Triple::ppc64le || 6417 ToolChain.getArch() == llvm::Triple::systemz) 6418 return "/lib64/ld64.so.1"; 6419 else if (ToolChain.getArch() == llvm::Triple::sparcv9) 6420 return "/lib64/ld-linux.so.2"; 6421 else 6422 return "/lib64/ld-linux-x86-64.so.2"; 6423} 6424 6425void gnutools::Link::ConstructJob(Compilation &C, const JobAction &JA, 6426 const InputInfo &Output, 6427 const InputInfoList &Inputs, 6428 const ArgList &Args, 6429 const char *LinkingOutput) const { 6430 const toolchains::Linux& ToolChain = 6431 static_cast<const toolchains::Linux&>(getToolChain()); 6432 const Driver &D = ToolChain.getDriver(); 6433 const bool isAndroid = 6434 ToolChain.getTriple().getEnvironment() == llvm::Triple::Android; 6435 const SanitizerArgs &Sanitize = ToolChain.getSanitizerArgs(); 6436 const bool IsPIE = 6437 !Args.hasArg(options::OPT_shared) && 6438 (Args.hasArg(options::OPT_pie) || Sanitize.hasZeroBaseShadow()); 6439 6440 ArgStringList CmdArgs; 6441 6442 // Silence warning for "clang -g foo.o -o foo" 6443 Args.ClaimAllArgs(options::OPT_g_Group); 6444 // and "clang -emit-llvm foo.o -o foo" 6445 Args.ClaimAllArgs(options::OPT_emit_llvm); 6446 // and for "clang -w foo.o -o foo". Other warning options are already 6447 // handled somewhere else. 6448 Args.ClaimAllArgs(options::OPT_w); 6449 6450 if (!D.SysRoot.empty()) 6451 CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot)); 6452 6453 if (IsPIE) 6454 CmdArgs.push_back("-pie"); 6455 6456 if (Args.hasArg(options::OPT_rdynamic)) 6457 CmdArgs.push_back("-export-dynamic"); 6458 6459 if (Args.hasArg(options::OPT_s)) 6460 CmdArgs.push_back("-s"); 6461 6462 for (std::vector<std::string>::const_iterator i = ToolChain.ExtraOpts.begin(), 6463 e = ToolChain.ExtraOpts.end(); 6464 i != e; ++i) 6465 CmdArgs.push_back(i->c_str()); 6466 6467 if (!Args.hasArg(options::OPT_static)) { 6468 CmdArgs.push_back("--eh-frame-hdr"); 6469 } 6470 6471 CmdArgs.push_back("-m"); 6472 if (ToolChain.getArch() == llvm::Triple::x86) 6473 CmdArgs.push_back("elf_i386"); 6474 else if (ToolChain.getArch() == llvm::Triple::aarch64) 6475 CmdArgs.push_back("aarch64linux"); 6476 else if (ToolChain.getArch() == llvm::Triple::arm 6477 || ToolChain.getArch() == llvm::Triple::thumb) 6478 CmdArgs.push_back("armelf_linux_eabi"); 6479 else if (ToolChain.getArch() == llvm::Triple::ppc) 6480 CmdArgs.push_back("elf32ppclinux"); 6481 else if (ToolChain.getArch() == llvm::Triple::ppc64) 6482 CmdArgs.push_back("elf64ppc"); 6483 else if (ToolChain.getArch() == llvm::Triple::sparc) 6484 CmdArgs.push_back("elf32_sparc"); 6485 else if (ToolChain.getArch() == llvm::Triple::sparcv9) 6486 CmdArgs.push_back("elf64_sparc"); 6487 else if (ToolChain.getArch() == llvm::Triple::mips) 6488 CmdArgs.push_back("elf32btsmip"); 6489 else if (ToolChain.getArch() == llvm::Triple::mipsel) 6490 CmdArgs.push_back("elf32ltsmip"); 6491 else if (ToolChain.getArch() == llvm::Triple::mips64) { 6492 if (hasMipsN32ABIArg(Args)) 6493 CmdArgs.push_back("elf32btsmipn32"); 6494 else 6495 CmdArgs.push_back("elf64btsmip"); 6496 } 6497 else if (ToolChain.getArch() == llvm::Triple::mips64el) { 6498 if (hasMipsN32ABIArg(Args)) 6499 CmdArgs.push_back("elf32ltsmipn32"); 6500 else 6501 CmdArgs.push_back("elf64ltsmip"); 6502 } 6503 else if (ToolChain.getArch() == llvm::Triple::systemz) 6504 CmdArgs.push_back("elf64_s390"); 6505 else 6506 CmdArgs.push_back("elf_x86_64"); 6507 6508 if (Args.hasArg(options::OPT_static)) { 6509 if (ToolChain.getArch() == llvm::Triple::arm 6510 || ToolChain.getArch() == llvm::Triple::thumb) 6511 CmdArgs.push_back("-Bstatic"); 6512 else 6513 CmdArgs.push_back("-static"); 6514 } else if (Args.hasArg(options::OPT_shared)) { 6515 CmdArgs.push_back("-shared"); 6516 if (isAndroid) { 6517 CmdArgs.push_back("-Bsymbolic"); 6518 } 6519 } 6520 6521 if (ToolChain.getArch() == llvm::Triple::arm || 6522 ToolChain.getArch() == llvm::Triple::thumb || 6523 (!Args.hasArg(options::OPT_static) && 6524 !Args.hasArg(options::OPT_shared))) { 6525 CmdArgs.push_back("-dynamic-linker"); 6526 CmdArgs.push_back(Args.MakeArgString( 6527 D.DyldPrefix + getLinuxDynamicLinker(Args, ToolChain))); 6528 } 6529 6530 CmdArgs.push_back("-o"); 6531 CmdArgs.push_back(Output.getFilename()); 6532 6533 if (!Args.hasArg(options::OPT_nostdlib) && 6534 !Args.hasArg(options::OPT_nostartfiles)) { 6535 if (!isAndroid) { 6536 const char *crt1 = NULL; 6537 if (!Args.hasArg(options::OPT_shared)){ 6538 if (Args.hasArg(options::OPT_pg)) 6539 crt1 = "gcrt1.o"; 6540 else if (IsPIE) 6541 crt1 = "Scrt1.o"; 6542 else 6543 crt1 = "crt1.o"; 6544 } 6545 if (crt1) 6546 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crt1))); 6547 6548 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o"))); 6549 } 6550 6551 const char *crtbegin; 6552 if (Args.hasArg(options::OPT_static)) 6553 crtbegin = isAndroid ? "crtbegin_static.o" : "crtbeginT.o"; 6554 else if (Args.hasArg(options::OPT_shared)) 6555 crtbegin = isAndroid ? "crtbegin_so.o" : "crtbeginS.o"; 6556 else if (IsPIE) 6557 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbeginS.o"; 6558 else 6559 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbegin.o"; 6560 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crtbegin))); 6561 6562 // Add crtfastmath.o if available and fast math is enabled. 6563 ToolChain.AddFastMathRuntimeIfAvailable(Args, CmdArgs); 6564 } 6565 6566 Args.AddAllArgs(CmdArgs, options::OPT_L); 6567 6568 const ToolChain::path_list Paths = ToolChain.getFilePaths(); 6569 6570 for (ToolChain::path_list::const_iterator i = Paths.begin(), e = Paths.end(); 6571 i != e; ++i) 6572 CmdArgs.push_back(Args.MakeArgString(StringRef("-L") + *i)); 6573 6574 // Tell the linker to load the plugin. This has to come before AddLinkerInputs 6575 // as gold requires -plugin to come before any -plugin-opt that -Wl might 6576 // forward. 6577 if (D.IsUsingLTO(Args)) { 6578 CmdArgs.push_back("-plugin"); 6579 std::string Plugin = ToolChain.getDriver().Dir + "/../lib/LLVMgold.so"; 6580 CmdArgs.push_back(Args.MakeArgString(Plugin)); 6581 6582 // Try to pass driver level flags relevant to LTO code generation down to 6583 // the plugin. 6584 6585 // Handle flags for selecting CPU variants. 6586 std::string CPU = getCPUName(Args, ToolChain.getTriple()); 6587 if (!CPU.empty()) { 6588 CmdArgs.push_back( 6589 Args.MakeArgString(Twine("-plugin-opt=mcpu=") + 6590 CPU)); 6591 } 6592 } 6593 6594 6595 if (Args.hasArg(options::OPT_Z_Xlinker__no_demangle)) 6596 CmdArgs.push_back("--no-demangle"); 6597 6598 AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs); 6599 6600 // Call these before we add the C++ ABI library. 6601 if (Sanitize.needsUbsanRt()) 6602 addUbsanRTLinux(getToolChain(), Args, CmdArgs, D.CCCIsCXX(), 6603 Sanitize.needsAsanRt() || Sanitize.needsTsanRt() || 6604 Sanitize.needsMsanRt() || Sanitize.needsLsanRt()); 6605 if (Sanitize.needsAsanRt()) 6606 addAsanRTLinux(getToolChain(), Args, CmdArgs); 6607 if (Sanitize.needsTsanRt()) 6608 addTsanRTLinux(getToolChain(), Args, CmdArgs); 6609 if (Sanitize.needsMsanRt()) 6610 addMsanRTLinux(getToolChain(), Args, CmdArgs); 6611 if (Sanitize.needsLsanRt()) 6612 addLsanRTLinux(getToolChain(), Args, CmdArgs); 6613 if (Sanitize.needsDfsanRt()) 6614 addDfsanRTLinux(getToolChain(), Args, CmdArgs); 6615 6616 // The profile runtime also needs access to system libraries. 6617 addProfileRTLinux(getToolChain(), Args, CmdArgs); 6618 6619 if (D.CCCIsCXX() && 6620 !Args.hasArg(options::OPT_nostdlib) && 6621 !Args.hasArg(options::OPT_nodefaultlibs)) { 6622 bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) && 6623 !Args.hasArg(options::OPT_static); 6624 if (OnlyLibstdcxxStatic) 6625 CmdArgs.push_back("-Bstatic"); 6626 ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs); 6627 if (OnlyLibstdcxxStatic) 6628 CmdArgs.push_back("-Bdynamic"); 6629 CmdArgs.push_back("-lm"); 6630 } 6631 6632 if (!Args.hasArg(options::OPT_nostdlib)) { 6633 if (!Args.hasArg(options::OPT_nodefaultlibs)) { 6634 if (Args.hasArg(options::OPT_static)) 6635 CmdArgs.push_back("--start-group"); 6636 6637 bool OpenMP = Args.hasArg(options::OPT_fopenmp); 6638 if (OpenMP) { 6639 CmdArgs.push_back("-lgomp"); 6640 6641 // FIXME: Exclude this for platforms whith libgomp that doesn't require 6642 // librt. Most modern Linux platfroms require it, but some may not. 6643 CmdArgs.push_back("-lrt"); 6644 } 6645 6646 AddLibgcc(ToolChain.getTriple(), D, CmdArgs, Args); 6647 6648 if (Args.hasArg(options::OPT_pthread) || 6649 Args.hasArg(options::OPT_pthreads) || OpenMP) 6650 CmdArgs.push_back("-lpthread"); 6651 6652 CmdArgs.push_back("-lc"); 6653 6654 if (Args.hasArg(options::OPT_static)) 6655 CmdArgs.push_back("--end-group"); 6656 else 6657 AddLibgcc(ToolChain.getTriple(), D, CmdArgs, Args); 6658 } 6659 6660 if (!Args.hasArg(options::OPT_nostartfiles)) { 6661 const char *crtend; 6662 if (Args.hasArg(options::OPT_shared)) 6663 crtend = isAndroid ? "crtend_so.o" : "crtendS.o"; 6664 else if (IsPIE) 6665 crtend = isAndroid ? "crtend_android.o" : "crtendS.o"; 6666 else 6667 crtend = isAndroid ? "crtend_android.o" : "crtend.o"; 6668 6669 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crtend))); 6670 if (!isAndroid) 6671 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o"))); 6672 } 6673 } 6674 6675 C.addCommand(new Command(JA, *this, ToolChain.Linker.c_str(), CmdArgs)); 6676} 6677 6678void minix::Assemble::ConstructJob(Compilation &C, const JobAction &JA, 6679 const InputInfo &Output, 6680 const InputInfoList &Inputs, 6681 const ArgList &Args, 6682 const char *LinkingOutput) const { 6683 ArgStringList CmdArgs; 6684 6685 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, 6686 options::OPT_Xassembler); 6687 6688 CmdArgs.push_back("-o"); 6689 CmdArgs.push_back(Output.getFilename()); 6690 6691 for (InputInfoList::const_iterator 6692 it = Inputs.begin(), ie = Inputs.end(); it != ie; ++it) { 6693 const InputInfo &II = *it; 6694 CmdArgs.push_back(II.getFilename()); 6695 } 6696 6697 const char *Exec = 6698 Args.MakeArgString(getToolChain().GetProgramPath("as")); 6699 C.addCommand(new Command(JA, *this, Exec, CmdArgs)); 6700} 6701 6702void minix::Link::ConstructJob(Compilation &C, const JobAction &JA, 6703 const InputInfo &Output, 6704 const InputInfoList &Inputs, 6705 const ArgList &Args, 6706 const char *LinkingOutput) const { 6707 const Driver &D = getToolChain().getDriver(); 6708 ArgStringList CmdArgs; 6709 6710 if (Output.isFilename()) { 6711 CmdArgs.push_back("-o"); 6712 CmdArgs.push_back(Output.getFilename()); 6713 } else { 6714 assert(Output.isNothing() && "Invalid output."); 6715 } 6716 6717 if (!Args.hasArg(options::OPT_nostdlib) && 6718 !Args.hasArg(options::OPT_nostartfiles)) { 6719 CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("crt1.o"))); 6720 CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("crti.o"))); 6721 CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("crtbegin.o"))); 6722 CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("crtn.o"))); 6723 } 6724 6725 Args.AddAllArgs(CmdArgs, options::OPT_L); 6726 Args.AddAllArgs(CmdArgs, options::OPT_T_Group); 6727 Args.AddAllArgs(CmdArgs, options::OPT_e); 6728 6729 AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs); 6730 6731 addProfileRT(getToolChain(), Args, CmdArgs, getToolChain().getTriple()); 6732 6733 if (!Args.hasArg(options::OPT_nostdlib) && 6734 !Args.hasArg(options::OPT_nodefaultlibs)) { 6735 if (D.CCCIsCXX()) { 6736 getToolChain().AddCXXStdlibLibArgs(Args, CmdArgs); 6737 CmdArgs.push_back("-lm"); 6738 } 6739 } 6740 6741 if (!Args.hasArg(options::OPT_nostdlib) && 6742 !Args.hasArg(options::OPT_nostartfiles)) { 6743 if (Args.hasArg(options::OPT_pthread)) 6744 CmdArgs.push_back("-lpthread"); 6745 CmdArgs.push_back("-lc"); 6746 CmdArgs.push_back("-lCompilerRT-Generic"); 6747 CmdArgs.push_back("-L/usr/pkg/compiler-rt/lib"); 6748 CmdArgs.push_back( 6749 Args.MakeArgString(getToolChain().GetFilePath("crtend.o"))); 6750 } 6751 6752 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("ld")); 6753 C.addCommand(new Command(JA, *this, Exec, CmdArgs)); 6754} 6755 6756/// DragonFly Tools 6757 6758// For now, DragonFly Assemble does just about the same as for 6759// FreeBSD, but this may change soon. 6760void dragonfly::Assemble::ConstructJob(Compilation &C, const JobAction &JA, 6761 const InputInfo &Output, 6762 const InputInfoList &Inputs, 6763 const ArgList &Args, 6764 const char *LinkingOutput) const { 6765 ArgStringList CmdArgs; 6766 6767 // When building 32-bit code on DragonFly/pc64, we have to explicitly 6768 // instruct as in the base system to assemble 32-bit code. 6769 if (getToolChain().getArch() == llvm::Triple::x86) 6770 CmdArgs.push_back("--32"); 6771 6772 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, 6773 options::OPT_Xassembler); 6774 6775 CmdArgs.push_back("-o"); 6776 CmdArgs.push_back(Output.getFilename()); 6777 6778 for (InputInfoList::const_iterator 6779 it = Inputs.begin(), ie = Inputs.end(); it != ie; ++it) { 6780 const InputInfo &II = *it; 6781 CmdArgs.push_back(II.getFilename()); 6782 } 6783 6784 const char *Exec = 6785 Args.MakeArgString(getToolChain().GetProgramPath("as")); 6786 C.addCommand(new Command(JA, *this, Exec, CmdArgs)); 6787} 6788 6789void dragonfly::Link::ConstructJob(Compilation &C, const JobAction &JA, 6790 const InputInfo &Output, 6791 const InputInfoList &Inputs, 6792 const ArgList &Args, 6793 const char *LinkingOutput) const { 6794 bool UseGCC47 = false; 6795 const Driver &D = getToolChain().getDriver(); 6796 ArgStringList CmdArgs; 6797 6798 if (llvm::sys::fs::exists("/usr/lib/gcc47", UseGCC47)) 6799 UseGCC47 = false; 6800 6801 if (!D.SysRoot.empty()) 6802 CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot)); 6803 6804 CmdArgs.push_back("--eh-frame-hdr"); 6805 if (Args.hasArg(options::OPT_static)) { 6806 CmdArgs.push_back("-Bstatic"); 6807 } else { 6808 if (Args.hasArg(options::OPT_rdynamic)) 6809 CmdArgs.push_back("-export-dynamic"); 6810 if (Args.hasArg(options::OPT_shared)) 6811 CmdArgs.push_back("-Bshareable"); 6812 else { 6813 CmdArgs.push_back("-dynamic-linker"); 6814 CmdArgs.push_back("/usr/libexec/ld-elf.so.2"); 6815 } 6816 CmdArgs.push_back("--hash-style=both"); 6817 } 6818 6819 // When building 32-bit code on DragonFly/pc64, we have to explicitly 6820 // instruct ld in the base system to link 32-bit code. 6821 if (getToolChain().getArch() == llvm::Triple::x86) { 6822 CmdArgs.push_back("-m"); 6823 CmdArgs.push_back("elf_i386"); 6824 } 6825 6826 if (Output.isFilename()) { 6827 CmdArgs.push_back("-o"); 6828 CmdArgs.push_back(Output.getFilename()); 6829 } else { 6830 assert(Output.isNothing() && "Invalid output."); 6831 } 6832 6833 if (!Args.hasArg(options::OPT_nostdlib) && 6834 !Args.hasArg(options::OPT_nostartfiles)) { 6835 if (!Args.hasArg(options::OPT_shared)) { 6836 if (Args.hasArg(options::OPT_pg)) 6837 CmdArgs.push_back(Args.MakeArgString( 6838 getToolChain().GetFilePath("gcrt1.o"))); 6839 else { 6840 if (Args.hasArg(options::OPT_pie)) 6841 CmdArgs.push_back(Args.MakeArgString( 6842 getToolChain().GetFilePath("Scrt1.o"))); 6843 else 6844 CmdArgs.push_back(Args.MakeArgString( 6845 getToolChain().GetFilePath("crt1.o"))); 6846 } 6847 } 6848 CmdArgs.push_back(Args.MakeArgString( 6849 getToolChain().GetFilePath("crti.o"))); 6850 if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_pie)) 6851 CmdArgs.push_back(Args.MakeArgString( 6852 getToolChain().GetFilePath("crtbeginS.o"))); 6853 else 6854 CmdArgs.push_back(Args.MakeArgString( 6855 getToolChain().GetFilePath("crtbegin.o"))); 6856 } 6857 6858 Args.AddAllArgs(CmdArgs, options::OPT_L); 6859 Args.AddAllArgs(CmdArgs, options::OPT_T_Group); 6860 Args.AddAllArgs(CmdArgs, options::OPT_e); 6861 6862 AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs); 6863 6864 if (!Args.hasArg(options::OPT_nostdlib) && 6865 !Args.hasArg(options::OPT_nodefaultlibs)) { 6866 // FIXME: GCC passes on -lgcc, -lgcc_pic and a whole lot of 6867 // rpaths 6868 if (UseGCC47) 6869 CmdArgs.push_back("-L/usr/lib/gcc47"); 6870 else 6871 CmdArgs.push_back("-L/usr/lib/gcc44"); 6872 6873 if (!Args.hasArg(options::OPT_static)) { 6874 if (UseGCC47) { 6875 CmdArgs.push_back("-rpath"); 6876 CmdArgs.push_back("/usr/lib/gcc47"); 6877 } else { 6878 CmdArgs.push_back("-rpath"); 6879 CmdArgs.push_back("/usr/lib/gcc44"); 6880 } 6881 } 6882 6883 if (D.CCCIsCXX()) { 6884 getToolChain().AddCXXStdlibLibArgs(Args, CmdArgs); 6885 CmdArgs.push_back("-lm"); 6886 } 6887 6888 if (Args.hasArg(options::OPT_pthread)) 6889 CmdArgs.push_back("-lpthread"); 6890 6891 if (!Args.hasArg(options::OPT_nolibc)) { 6892 CmdArgs.push_back("-lc"); 6893 } 6894 6895 if (UseGCC47) { 6896 if (Args.hasArg(options::OPT_static) || 6897 Args.hasArg(options::OPT_static_libgcc)) { 6898 CmdArgs.push_back("-lgcc"); 6899 CmdArgs.push_back("-lgcc_eh"); 6900 } else { 6901 if (Args.hasArg(options::OPT_shared_libgcc)) { 6902 CmdArgs.push_back("-lgcc_pic"); 6903 if (!Args.hasArg(options::OPT_shared)) 6904 CmdArgs.push_back("-lgcc"); 6905 } else { 6906 CmdArgs.push_back("-lgcc"); 6907 CmdArgs.push_back("--as-needed"); 6908 CmdArgs.push_back("-lgcc_pic"); 6909 CmdArgs.push_back("--no-as-needed"); 6910 } 6911 } 6912 } else { 6913 if (Args.hasArg(options::OPT_shared)) { 6914 CmdArgs.push_back("-lgcc_pic"); 6915 } else { 6916 CmdArgs.push_back("-lgcc"); 6917 } 6918 } 6919 } 6920 6921 if (!Args.hasArg(options::OPT_nostdlib) && 6922 !Args.hasArg(options::OPT_nostartfiles)) { 6923 if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_pie)) 6924 CmdArgs.push_back(Args.MakeArgString( 6925 getToolChain().GetFilePath("crtendS.o"))); 6926 else 6927 CmdArgs.push_back(Args.MakeArgString( 6928 getToolChain().GetFilePath("crtend.o"))); 6929 CmdArgs.push_back(Args.MakeArgString( 6930 getToolChain().GetFilePath("crtn.o"))); 6931 } 6932 6933 addProfileRT(getToolChain(), Args, CmdArgs, getToolChain().getTriple()); 6934 6935 const char *Exec = 6936 Args.MakeArgString(getToolChain().GetProgramPath("ld")); 6937 C.addCommand(new Command(JA, *this, Exec, CmdArgs)); 6938} 6939 6940void visualstudio::Link::ConstructJob(Compilation &C, const JobAction &JA, 6941 const InputInfo &Output, 6942 const InputInfoList &Inputs, 6943 const ArgList &Args, 6944 const char *LinkingOutput) const { 6945 ArgStringList CmdArgs; 6946 6947 if (Output.isFilename()) { 6948 CmdArgs.push_back(Args.MakeArgString(std::string("-out:") + 6949 Output.getFilename())); 6950 } else { 6951 assert(Output.isNothing() && "Invalid output."); 6952 } 6953 6954 if (!Args.hasArg(options::OPT_nostdlib) && 6955 !Args.hasArg(options::OPT_nostartfiles) && 6956 !C.getDriver().IsCLMode()) { 6957 CmdArgs.push_back("-defaultlib:libcmt"); 6958 } 6959 6960 CmdArgs.push_back("-nologo"); 6961 6962 bool DLL = Args.hasArg(options::OPT__SLASH_LD, options::OPT__SLASH_LDd); 6963 6964 if (DLL) { 6965 CmdArgs.push_back(Args.MakeArgString("-dll")); 6966 6967 SmallString<128> ImplibName(Output.getFilename()); 6968 llvm::sys::path::replace_extension(ImplibName, "lib"); 6969 CmdArgs.push_back(Args.MakeArgString(std::string("-implib:") + 6970 ImplibName.str())); 6971 } 6972 6973 if (getToolChain().getSanitizerArgs().needsAsanRt()) { 6974 CmdArgs.push_back(Args.MakeArgString("-debug")); 6975 CmdArgs.push_back(Args.MakeArgString("-incremental:no")); 6976 SmallString<128> LibSanitizer(getToolChain().getDriver().ResourceDir); 6977 llvm::sys::path::append(LibSanitizer, "lib", "windows"); 6978 if (DLL) { 6979 llvm::sys::path::append(LibSanitizer, "clang_rt.asan_dll_thunk-i386.lib"); 6980 } else { 6981 llvm::sys::path::append(LibSanitizer, "clang_rt.asan-i386.lib"); 6982 } 6983 // FIXME: Handle 64-bit. 6984 CmdArgs.push_back(Args.MakeArgString(LibSanitizer)); 6985 } 6986 6987 Args.AddAllArgValues(CmdArgs, options::OPT_l); 6988 Args.AddAllArgValues(CmdArgs, options::OPT__SLASH_link); 6989 6990 // Add filenames immediately. 6991 for (InputInfoList::const_iterator 6992 it = Inputs.begin(), ie = Inputs.end(); it != ie; ++it) { 6993 if (it->isFilename()) 6994 CmdArgs.push_back(it->getFilename()); 6995 else 6996 it->getInputArg().renderAsInput(Args, CmdArgs); 6997 } 6998 6999 const char *Exec = 7000 Args.MakeArgString(getToolChain().GetProgramPath("link.exe")); 7001 C.addCommand(new Command(JA, *this, Exec, CmdArgs)); 7002} 7003 7004void visualstudio::Compile::ConstructJob(Compilation &C, const JobAction &JA, 7005 const InputInfo &Output, 7006 const InputInfoList &Inputs, 7007 const ArgList &Args, 7008 const char *LinkingOutput) const { 7009 C.addCommand(GetCommand(C, JA, Output, Inputs, Args, LinkingOutput)); 7010} 7011 7012// Try to find FallbackName on PATH that is not identical to ClangProgramPath. 7013// If one cannot be found, return FallbackName. 7014// We do this special search to prevent clang-cl from falling back onto itself 7015// if it's available as cl.exe on the path. 7016static std::string FindFallback(const char *FallbackName, 7017 const char *ClangProgramPath) { 7018 llvm::Optional<std::string> OptPath = llvm::sys::Process::GetEnv("PATH"); 7019 if (!OptPath.hasValue()) 7020 return FallbackName; 7021 7022#ifdef LLVM_ON_WIN32 7023 const StringRef PathSeparators = ";"; 7024#else 7025 const StringRef PathSeparators = ":"; 7026#endif 7027 7028 SmallVector<StringRef, 8> PathSegments; 7029 llvm::SplitString(OptPath.getValue(), PathSegments, PathSeparators); 7030 7031 for (size_t i = 0, e = PathSegments.size(); i != e; ++i) { 7032 const StringRef &PathSegment = PathSegments[i]; 7033 if (PathSegment.empty()) 7034 continue; 7035 7036 SmallString<128> FilePath(PathSegment); 7037 llvm::sys::path::append(FilePath, FallbackName); 7038 if (llvm::sys::fs::can_execute(Twine(FilePath)) && 7039 !llvm::sys::fs::equivalent(Twine(FilePath), ClangProgramPath)) 7040 return FilePath.str(); 7041 } 7042 7043 return FallbackName; 7044} 7045 7046Command *visualstudio::Compile::GetCommand(Compilation &C, const JobAction &JA, 7047 const InputInfo &Output, 7048 const InputInfoList &Inputs, 7049 const ArgList &Args, 7050 const char *LinkingOutput) const { 7051 ArgStringList CmdArgs; 7052 CmdArgs.push_back("/nologo"); 7053 CmdArgs.push_back("/c"); // Compile only. 7054 CmdArgs.push_back("/W0"); // No warnings. 7055 7056 // The goal is to be able to invoke this tool correctly based on 7057 // any flag accepted by clang-cl. 7058 7059 // These are spelled the same way in clang and cl.exe,. 7060 Args.AddAllArgs(CmdArgs, options::OPT_D, options::OPT_U); 7061 Args.AddAllArgs(CmdArgs, options::OPT_I); 7062 7063 // Optimization level. 7064 if (Arg *A = Args.getLastArg(options::OPT_O, options::OPT_O0)) { 7065 if (A->getOption().getID() == options::OPT_O0) { 7066 CmdArgs.push_back("/Od"); 7067 } else { 7068 StringRef OptLevel = A->getValue(); 7069 if (OptLevel == "1" || OptLevel == "2" || OptLevel == "s") 7070 A->render(Args, CmdArgs); 7071 else if (OptLevel == "3") 7072 CmdArgs.push_back("/Ox"); 7073 } 7074 } 7075 7076 // Flags for which clang-cl have an alias. 7077 // FIXME: How can we ensure this stays in sync with relevant clang-cl options? 7078 7079 if (Arg *A = Args.getLastArg(options::OPT_frtti, options::OPT_fno_rtti)) 7080 CmdArgs.push_back(A->getOption().getID() == options::OPT_frtti ? "/GR" 7081 : "/GR-"); 7082 if (Args.hasArg(options::OPT_fsyntax_only)) 7083 CmdArgs.push_back("/Zs"); 7084 7085 std::vector<std::string> Includes = Args.getAllArgValues(options::OPT_include); 7086 for (size_t I = 0, E = Includes.size(); I != E; ++I) 7087 CmdArgs.push_back(Args.MakeArgString(std::string("/FI") + Includes[I])); 7088 7089 // Flags that can simply be passed through. 7090 Args.AddAllArgs(CmdArgs, options::OPT__SLASH_LD); 7091 Args.AddAllArgs(CmdArgs, options::OPT__SLASH_LDd); 7092 7093 // The order of these flags is relevant, so pick the last one. 7094 if (Arg *A = Args.getLastArg(options::OPT__SLASH_MD, options::OPT__SLASH_MDd, 7095 options::OPT__SLASH_MT, options::OPT__SLASH_MTd)) 7096 A->render(Args, CmdArgs); 7097 7098 7099 // Input filename. 7100 assert(Inputs.size() == 1); 7101 const InputInfo &II = Inputs[0]; 7102 assert(II.getType() == types::TY_C || II.getType() == types::TY_CXX); 7103 CmdArgs.push_back(II.getType() == types::TY_C ? "/Tc" : "/Tp"); 7104 if (II.isFilename()) 7105 CmdArgs.push_back(II.getFilename()); 7106 else 7107 II.getInputArg().renderAsInput(Args, CmdArgs); 7108 7109 // Output filename. 7110 assert(Output.getType() == types::TY_Object); 7111 const char *Fo = Args.MakeArgString(std::string("/Fo") + 7112 Output.getFilename()); 7113 CmdArgs.push_back(Fo); 7114 7115 const Driver &D = getToolChain().getDriver(); 7116 std::string Exec = FindFallback("cl.exe", D.getClangProgramPath()); 7117 7118 return new Command(JA, *this, Args.MakeArgString(Exec), CmdArgs); 7119} 7120 7121 7122/// XCore Tools 7123// We pass assemble and link construction to the xcc tool. 7124 7125void XCore::Assemble::ConstructJob(Compilation &C, const JobAction &JA, 7126 const InputInfo &Output, 7127 const InputInfoList &Inputs, 7128 const ArgList &Args, 7129 const char *LinkingOutput) const { 7130 ArgStringList CmdArgs; 7131 7132 CmdArgs.push_back("-o"); 7133 CmdArgs.push_back(Output.getFilename()); 7134 7135 CmdArgs.push_back("-c"); 7136 7137 if (Args.hasArg(options::OPT_g_Group)) { 7138 CmdArgs.push_back("-g"); 7139 } 7140 7141 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, 7142 options::OPT_Xassembler); 7143 7144 for (InputInfoList::const_iterator 7145 it = Inputs.begin(), ie = Inputs.end(); it != ie; ++it) { 7146 const InputInfo &II = *it; 7147 CmdArgs.push_back(II.getFilename()); 7148 } 7149 7150 const char *Exec = 7151 Args.MakeArgString(getToolChain().GetProgramPath("xcc")); 7152 C.addCommand(new Command(JA, *this, Exec, CmdArgs)); 7153} 7154 7155void XCore::Link::ConstructJob(Compilation &C, const JobAction &JA, 7156 const InputInfo &Output, 7157 const InputInfoList &Inputs, 7158 const ArgList &Args, 7159 const char *LinkingOutput) const { 7160 ArgStringList CmdArgs; 7161 7162 if (Output.isFilename()) { 7163 CmdArgs.push_back("-o"); 7164 CmdArgs.push_back(Output.getFilename()); 7165 } else { 7166 assert(Output.isNothing() && "Invalid output."); 7167 } 7168 7169 AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs); 7170 7171 const char *Exec = 7172 Args.MakeArgString(getToolChain().GetProgramPath("xcc")); 7173 C.addCommand(new Command(JA, *this, Exec, CmdArgs)); 7174} 7175