1//===--- ToolChain.cpp - Collections of tools for one platform ------------===//
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 "clang/Basic/ObjCRuntime.h"
12#include "clang/Driver/Action.h"
13#include "clang/Driver/Driver.h"
14#include "clang/Driver/DriverDiagnostic.h"
15#include "clang/Driver/Options.h"
16#include "clang/Driver/SanitizerArgs.h"
17#include "clang/Driver/ToolChain.h"
18#include "llvm/ADT/StringSwitch.h"
19#include "llvm/Option/Arg.h"
20#include "llvm/Option/ArgList.h"
21#include "llvm/Option/Option.h"
22#include "llvm/Support/ErrorHandling.h"
23#include "llvm/Support/FileSystem.h"
24using namespace clang::driver;
25using namespace clang;
26using namespace llvm::opt;
27
28ToolChain::ToolChain(const Driver &D, const llvm::Triple &T,
29 const ArgList &A)
30 : D(D), Triple(T), Args(A) {
31}
32
33ToolChain::~ToolChain() {
34}
35
36const Driver &ToolChain::getDriver() const {
37 return D;
38}
39
40bool ToolChain::useIntegratedAs() const {
41 return Args.hasFlag(options::OPT_integrated_as,
42 options::OPT_no_integrated_as,
43 IsIntegratedAssemblerDefault());
44}
45
46const SanitizerArgs& ToolChain::getSanitizerArgs() const {
47 if (!SanitizerArguments.get())
48 SanitizerArguments.reset(new SanitizerArgs(*this, Args));
49 return *SanitizerArguments.get();
50}
51
52std::string ToolChain::getDefaultUniversalArchName() const {
53 // In universal driver terms, the arch name accepted by -arch isn't exactly
54 // the same as the ones that appear in the triple. Roughly speaking, this is
55 // an inverse of the darwin::getArchTypeForDarwinArchName() function, but the
56 // only interesting special case is powerpc.
57 switch (Triple.getArch()) {
58 case llvm::Triple::ppc:
59 return "ppc";
60 case llvm::Triple::ppc64:
61 return "ppc64";
62 case llvm::Triple::ppc64le:
63 return "ppc64le";
64 default:
65 return Triple.getArchName();
66 }
67}
68
69bool ToolChain::IsUnwindTablesDefault() const {
70 return false;
71}
72
73Tool *ToolChain::getClang() const {
74 if (!Clang)
75 Clang.reset(new tools::Clang(*this));
76 return Clang.get();
77}
78
79Tool *ToolChain::buildAssembler() const {
80 return new tools::ClangAs(*this);
81}
82
83Tool *ToolChain::buildLinker() const {
84 llvm_unreachable("Linking is not supported by this toolchain");
85}
86
87Tool *ToolChain::getAssemble() const {
88 if (!Assemble)
89 Assemble.reset(buildAssembler());
90 return Assemble.get();
91}
92
93Tool *ToolChain::getClangAs() const {
94 if (!Assemble)
95 Assemble.reset(new tools::ClangAs(*this));
96 return Assemble.get();
97}
98
99Tool *ToolChain::getLink() const {
100 if (!Link)
101 Link.reset(buildLinker());
102 return Link.get();
103}
104
105Tool *ToolChain::getTool(Action::ActionClass AC) const {
106 switch (AC) {
107 case Action::AssembleJobClass:
108 return getAssemble();
109
110 case Action::LinkJobClass:
111 return getLink();
112
113 case Action::InputClass:
114 case Action::BindArchClass:
115 case Action::LipoJobClass:
116 case Action::DsymutilJobClass:
117 case Action::VerifyJobClass:
118 llvm_unreachable("Invalid tool kind.");
119
120 case Action::CompileJobClass:
121 case Action::PrecompileJobClass:
122 case Action::PreprocessJobClass:
123 case Action::AnalyzeJobClass:
124 case Action::MigrateJobClass:
125 return getClang();
126 }
127
128 llvm_unreachable("Invalid tool kind.");
129}
130
131Tool *ToolChain::SelectTool(const JobAction &JA) const {
132 if (getDriver().ShouldUseClangCompiler(JA))
133 return getClang();
134 Action::ActionClass AC = JA.getKind();
135 if (AC == Action::AssembleJobClass && useIntegratedAs())
136 return getClangAs();
137 return getTool(AC);
138}
139
140std::string ToolChain::GetFilePath(const char *Name) const {
141 return D.GetFilePath(Name, *this);
142
143}
144
145std::string ToolChain::GetProgramPath(const char *Name) const {
146 return D.GetProgramPath(Name, *this);
147}
148
149types::ID ToolChain::LookupTypeForExtension(const char *Ext) const {
150 return types::lookupTypeForExtension(Ext);
151}
152
153bool ToolChain::HasNativeLLVMSupport() const {
154 return false;
155}
156
157ObjCRuntime ToolChain::getDefaultObjCRuntime(bool isNonFragile) const {
158 return ObjCRuntime(isNonFragile ? ObjCRuntime::GNUstep : ObjCRuntime::GCC,
159 VersionTuple());
160}
161
162/// getARMTargetCPU - Get the (LLVM) name of the ARM cpu we are targeting.
163//
164// FIXME: tblgen this.
165static const char *getARMTargetCPU(const ArgList &Args,
166 const llvm::Triple &Triple) {
167 // For Darwin targets, the -arch option (which is translated to a
168 // corresponding -march option) should determine the architecture
169 // (and the Mach-O slice) regardless of any -mcpu options.
170 if (!Triple.isOSDarwin()) {
171 // FIXME: Warn on inconsistent use of -mcpu and -march.
172 // If we have -mcpu=, use that.
173 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
174 return A->getValue();
175 }
176
177 StringRef MArch;
178 if (Arg *A = Args.getLastArg(options::OPT_march_EQ)) {
179 // Otherwise, if we have -march= choose the base CPU for that arch.
180 MArch = A->getValue();
181 } else {
182 // Otherwise, use the Arch from the triple.
183 MArch = Triple.getArchName();
184 }
185
186 if (Triple.getOS() == llvm::Triple::NetBSD) {
187 if (MArch == "armv6")
188 return "arm1176jzf-s";
189 }
190
191 const char *result = llvm::StringSwitch<const char *>(MArch)
192 .Cases("armv2", "armv2a","arm2")
193 .Case("armv3", "arm6")
194 .Case("armv3m", "arm7m")
195 .Case("armv4", "strongarm")
196 .Case("armv4t", "arm7tdmi")
197 .Cases("armv5", "armv5t", "arm10tdmi")
198 .Cases("armv5e", "armv5te", "arm1026ejs")
199 .Case("armv5tej", "arm926ej-s")
200 .Cases("armv6", "armv6k", "arm1136jf-s")
201 .Case("armv6j", "arm1136j-s")
202 .Cases("armv6z", "armv6zk", "arm1176jzf-s")
203 .Case("armv6t2", "arm1156t2-s")
204 .Cases("armv6m", "armv6-m", "cortex-m0")
205 .Cases("armv7", "armv7a", "armv7-a", "cortex-a8")
206 .Cases("armv7l", "armv7-l", "cortex-a8")
207 .Cases("armv7f", "armv7-f", "cortex-a9-mp")
208 .Cases("armv7s", "armv7-s", "swift")
209 .Cases("armv7r", "armv7-r", "cortex-r4")
210 .Cases("armv7m", "armv7-m", "cortex-m3")
211 .Cases("armv7em", "armv7e-m", "cortex-m4")
212 .Cases("armv8", "armv8a", "armv8-a", "cortex-a53")
213 .Case("ep9312", "ep9312")
214 .Case("iwmmxt", "iwmmxt")
215 .Case("xscale", "xscale")
216 // If all else failed, return the most base CPU with thumb interworking
217 // supported by LLVM.
218 .Default(0);
219
220 if (result)
221 return result;
222
223 return
224 Triple.getEnvironment() == llvm::Triple::GNUEABIHF
225 ? "arm1176jzf-s"
226 : "arm7tdmi";
227}
228
229/// getLLVMArchSuffixForARM - Get the LLVM arch name to use for a particular
230/// CPU.
231//
232// FIXME: This is redundant with -mcpu, why does LLVM use this.
233// FIXME: tblgen this, or kill it!
234static const char *getLLVMArchSuffixForARM(StringRef CPU) {
235 return llvm::StringSwitch<const char *>(CPU)
236 .Case("strongarm", "v4")
237 .Cases("arm7tdmi", "arm7tdmi-s", "arm710t", "v4t")
238 .Cases("arm720t", "arm9", "arm9tdmi", "v4t")
239 .Cases("arm920", "arm920t", "arm922t", "v4t")
240 .Cases("arm940t", "ep9312","v4t")
241 .Cases("arm10tdmi", "arm1020t", "v5")
242 .Cases("arm9e", "arm926ej-s", "arm946e-s", "v5e")
243 .Cases("arm966e-s", "arm968e-s", "arm10e", "v5e")
244 .Cases("arm1020e", "arm1022e", "xscale", "iwmmxt", "v5e")
245 .Cases("arm1136j-s", "arm1136jf-s", "arm1176jz-s", "v6")
246 .Cases("arm1176jzf-s", "mpcorenovfp", "mpcore", "v6")
247 .Cases("arm1156t2-s", "arm1156t2f-s", "v6t2")
248 .Cases("cortex-a5", "cortex-a7", "cortex-a8", "v7")
249 .Cases("cortex-a9", "cortex-a12", "cortex-a15", "v7")
250 .Cases("cortex-r4", "cortex-r5", "v7r")
251 .Case("cortex-m0", "v6m")
252 .Case("cortex-m3", "v7m")
253 .Case("cortex-m4", "v7em")
254 .Case("cortex-a9-mp", "v7f")
255 .Case("swift", "v7s")
256 .Cases("cortex-a53", "cortex-a57", "v8")
257 .Default("");
258}
259
260std::string ToolChain::ComputeLLVMTriple(const ArgList &Args,
261 types::ID InputType) const {
262 switch (getTriple().getArch()) {
263 default:
264 return getTripleString();
265
266 case llvm::Triple::x86_64: {
267 llvm::Triple Triple = getTriple();
268 if (!Triple.isOSDarwin())
269 return getTripleString();
270
271 if (Arg *A = Args.getLastArg(options::OPT_march_EQ)) {
272 // x86_64h goes in the triple. Other -march options just use the
273 // vanilla triple we already have.
274 StringRef MArch = A->getValue();
275 if (MArch == "x86_64h")
276 Triple.setArchName(MArch);
277 }
278 return Triple.getTriple();
279 }
280 case llvm::Triple::arm:
281 case llvm::Triple::thumb: {
282 // FIXME: Factor into subclasses.
283 llvm::Triple Triple = getTriple();
284
285 // Thumb2 is the default for V7 on Darwin.
286 //
287 // FIXME: Thumb should just be another -target-feaure, not in the triple.
288 StringRef Suffix =
289 getLLVMArchSuffixForARM(getARMTargetCPU(Args, Triple));
290 bool ThumbDefault = Suffix.startswith("v6m") ||
291 (Suffix.startswith("v7") && getTriple().isOSDarwin());
292 std::string ArchName = "arm";
293
294 // Assembly files should start in ARM mode.
295 if (InputType != types::TY_PP_Asm &&
296 Args.hasFlag(options::OPT_mthumb, options::OPT_mno_thumb, ThumbDefault))
297 ArchName = "thumb";
298 Triple.setArchName(ArchName + Suffix.str());
299
300 return Triple.getTriple();
301 }
302 }
303}
304
305std::string ToolChain::ComputeEffectiveClangTriple(const ArgList &Args,
306 types::ID InputType) const {
307 // Diagnose use of Darwin OS deployment target arguments on non-Darwin.
308 if (Arg *A = Args.getLastArg(options::OPT_mmacosx_version_min_EQ,
309 options::OPT_miphoneos_version_min_EQ,
310 options::OPT_mios_simulator_version_min_EQ))
311 getDriver().Diag(diag::err_drv_clang_unsupported)
312 << A->getAsString(Args);
313
314 return ComputeLLVMTriple(Args, InputType);
315}
316
317void ToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
318 ArgStringList &CC1Args) const {
319 // Each toolchain should provide the appropriate include flags.
320}
321
322void ToolChain::addClangTargetOptions(const ArgList &DriverArgs,
323 ArgStringList &CC1Args) const {
324}
325
326ToolChain::RuntimeLibType ToolChain::GetRuntimeLibType(
327 const ArgList &Args) const
328{
329 if (Arg *A = Args.getLastArg(options::OPT_rtlib_EQ)) {
330 StringRef Value = A->getValue();
331 if (Value == "compiler-rt")
332 return ToolChain::RLT_CompilerRT;
333 if (Value == "libgcc")
334 return ToolChain::RLT_Libgcc;
335 getDriver().Diag(diag::err_drv_invalid_rtlib_name)
336 << A->getAsString(Args);
337 }
338
339 return GetDefaultRuntimeLibType();
340}
341
342ToolChain::CXXStdlibType ToolChain::GetCXXStdlibType(const ArgList &Args) const{
343 if (Arg *A = Args.getLastArg(options::OPT_stdlib_EQ)) {
344 StringRef Value = A->getValue();
345 if (Value == "libc++")
346 return ToolChain::CST_Libcxx;
347 if (Value == "libstdc++")
348 return ToolChain::CST_Libstdcxx;
349 getDriver().Diag(diag::err_drv_invalid_stdlib_name)
350 << A->getAsString(Args);
351 }
352
353 return ToolChain::CST_Libstdcxx;
354}
355
356/// \brief Utility function to add a system include directory to CC1 arguments.
357/*static*/ void ToolChain::addSystemInclude(const ArgList &DriverArgs,
358 ArgStringList &CC1Args,
359 const Twine &Path) {
360 CC1Args.push_back("-internal-isystem");
361 CC1Args.push_back(DriverArgs.MakeArgString(Path));
362}
363
364/// \brief Utility function to add a system include directory with extern "C"
365/// semantics to CC1 arguments.
366///
367/// Note that this should be used rarely, and only for directories that
368/// historically and for legacy reasons are treated as having implicit extern
369/// "C" semantics. These semantics are *ignored* by and large today, but its
370/// important to preserve the preprocessor changes resulting from the
371/// classification.
372/*static*/ void ToolChain::addExternCSystemInclude(const ArgList &DriverArgs,
373 ArgStringList &CC1Args,
374 const Twine &Path) {
375 CC1Args.push_back("-internal-externc-isystem");
376 CC1Args.push_back(DriverArgs.MakeArgString(Path));
377}
378
379void ToolChain::addExternCSystemIncludeIfExists(const ArgList &DriverArgs,
380 ArgStringList &CC1Args,
381 const Twine &Path) {
382 if (llvm::sys::fs::exists(Path))
383 addExternCSystemInclude(DriverArgs, CC1Args, Path);
384}
385
386/// \brief Utility function to add a list of system include directories to CC1.
387/*static*/ void ToolChain::addSystemIncludes(const ArgList &DriverArgs,
388 ArgStringList &CC1Args,
389 ArrayRef<StringRef> Paths) {
390 for (ArrayRef<StringRef>::iterator I = Paths.begin(), E = Paths.end();
391 I != E; ++I) {
392 CC1Args.push_back("-internal-isystem");
393 CC1Args.push_back(DriverArgs.MakeArgString(*I));
394 }
395}
396
397void ToolChain::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
398 ArgStringList &CC1Args) const {
399 // Header search paths should be handled by each of the subclasses.
400 // Historically, they have not been, and instead have been handled inside of
401 // the CC1-layer frontend. As the logic is hoisted out, this generic function
402 // will slowly stop being called.
403 //
404 // While it is being called, replicate a bit of a hack to propagate the
405 // '-stdlib=' flag down to CC1 so that it can in turn customize the C++
406 // header search paths with it. Once all systems are overriding this
407 // function, the CC1 flag and this line can be removed.
408 DriverArgs.AddAllArgs(CC1Args, options::OPT_stdlib_EQ);
409}
410
411void ToolChain::AddCXXStdlibLibArgs(const ArgList &Args,
412 ArgStringList &CmdArgs) const {
413 CXXStdlibType Type = GetCXXStdlibType(Args);
414
415 switch (Type) {
416 case ToolChain::CST_Libcxx:
417 CmdArgs.push_back("-lc++");
418 break;
419
420 case ToolChain::CST_Libstdcxx:
421 CmdArgs.push_back("-lstdc++");
422 break;
423 }
424}
425
426void ToolChain::AddCCKextLibArgs(const ArgList &Args,
427 ArgStringList &CmdArgs) const {
428 CmdArgs.push_back("-lcc_kext");
429}
430
431bool ToolChain::AddFastMathRuntimeIfAvailable(const ArgList &Args,
432 ArgStringList &CmdArgs) const {
| 1//===--- ToolChain.cpp - Collections of tools for one platform ------------===//
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 "clang/Basic/ObjCRuntime.h"
12#include "clang/Driver/Action.h"
13#include "clang/Driver/Driver.h"
14#include "clang/Driver/DriverDiagnostic.h"
15#include "clang/Driver/Options.h"
16#include "clang/Driver/SanitizerArgs.h"
17#include "clang/Driver/ToolChain.h"
18#include "llvm/ADT/StringSwitch.h"
19#include "llvm/Option/Arg.h"
20#include "llvm/Option/ArgList.h"
21#include "llvm/Option/Option.h"
22#include "llvm/Support/ErrorHandling.h"
23#include "llvm/Support/FileSystem.h"
24using namespace clang::driver;
25using namespace clang;
26using namespace llvm::opt;
27
28ToolChain::ToolChain(const Driver &D, const llvm::Triple &T,
29 const ArgList &A)
30 : D(D), Triple(T), Args(A) {
31}
32
33ToolChain::~ToolChain() {
34}
35
36const Driver &ToolChain::getDriver() const {
37 return D;
38}
39
40bool ToolChain::useIntegratedAs() const {
41 return Args.hasFlag(options::OPT_integrated_as,
42 options::OPT_no_integrated_as,
43 IsIntegratedAssemblerDefault());
44}
45
46const SanitizerArgs& ToolChain::getSanitizerArgs() const {
47 if (!SanitizerArguments.get())
48 SanitizerArguments.reset(new SanitizerArgs(*this, Args));
49 return *SanitizerArguments.get();
50}
51
52std::string ToolChain::getDefaultUniversalArchName() const {
53 // In universal driver terms, the arch name accepted by -arch isn't exactly
54 // the same as the ones that appear in the triple. Roughly speaking, this is
55 // an inverse of the darwin::getArchTypeForDarwinArchName() function, but the
56 // only interesting special case is powerpc.
57 switch (Triple.getArch()) {
58 case llvm::Triple::ppc:
59 return "ppc";
60 case llvm::Triple::ppc64:
61 return "ppc64";
62 case llvm::Triple::ppc64le:
63 return "ppc64le";
64 default:
65 return Triple.getArchName();
66 }
67}
68
69bool ToolChain::IsUnwindTablesDefault() const {
70 return false;
71}
72
73Tool *ToolChain::getClang() const {
74 if (!Clang)
75 Clang.reset(new tools::Clang(*this));
76 return Clang.get();
77}
78
79Tool *ToolChain::buildAssembler() const {
80 return new tools::ClangAs(*this);
81}
82
83Tool *ToolChain::buildLinker() const {
84 llvm_unreachable("Linking is not supported by this toolchain");
85}
86
87Tool *ToolChain::getAssemble() const {
88 if (!Assemble)
89 Assemble.reset(buildAssembler());
90 return Assemble.get();
91}
92
93Tool *ToolChain::getClangAs() const {
94 if (!Assemble)
95 Assemble.reset(new tools::ClangAs(*this));
96 return Assemble.get();
97}
98
99Tool *ToolChain::getLink() const {
100 if (!Link)
101 Link.reset(buildLinker());
102 return Link.get();
103}
104
105Tool *ToolChain::getTool(Action::ActionClass AC) const {
106 switch (AC) {
107 case Action::AssembleJobClass:
108 return getAssemble();
109
110 case Action::LinkJobClass:
111 return getLink();
112
113 case Action::InputClass:
114 case Action::BindArchClass:
115 case Action::LipoJobClass:
116 case Action::DsymutilJobClass:
117 case Action::VerifyJobClass:
118 llvm_unreachable("Invalid tool kind.");
119
120 case Action::CompileJobClass:
121 case Action::PrecompileJobClass:
122 case Action::PreprocessJobClass:
123 case Action::AnalyzeJobClass:
124 case Action::MigrateJobClass:
125 return getClang();
126 }
127
128 llvm_unreachable("Invalid tool kind.");
129}
130
131Tool *ToolChain::SelectTool(const JobAction &JA) const {
132 if (getDriver().ShouldUseClangCompiler(JA))
133 return getClang();
134 Action::ActionClass AC = JA.getKind();
135 if (AC == Action::AssembleJobClass && useIntegratedAs())
136 return getClangAs();
137 return getTool(AC);
138}
139
140std::string ToolChain::GetFilePath(const char *Name) const {
141 return D.GetFilePath(Name, *this);
142
143}
144
145std::string ToolChain::GetProgramPath(const char *Name) const {
146 return D.GetProgramPath(Name, *this);
147}
148
149types::ID ToolChain::LookupTypeForExtension(const char *Ext) const {
150 return types::lookupTypeForExtension(Ext);
151}
152
153bool ToolChain::HasNativeLLVMSupport() const {
154 return false;
155}
156
157ObjCRuntime ToolChain::getDefaultObjCRuntime(bool isNonFragile) const {
158 return ObjCRuntime(isNonFragile ? ObjCRuntime::GNUstep : ObjCRuntime::GCC,
159 VersionTuple());
160}
161
162/// getARMTargetCPU - Get the (LLVM) name of the ARM cpu we are targeting.
163//
164// FIXME: tblgen this.
165static const char *getARMTargetCPU(const ArgList &Args,
166 const llvm::Triple &Triple) {
167 // For Darwin targets, the -arch option (which is translated to a
168 // corresponding -march option) should determine the architecture
169 // (and the Mach-O slice) regardless of any -mcpu options.
170 if (!Triple.isOSDarwin()) {
171 // FIXME: Warn on inconsistent use of -mcpu and -march.
172 // If we have -mcpu=, use that.
173 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
174 return A->getValue();
175 }
176
177 StringRef MArch;
178 if (Arg *A = Args.getLastArg(options::OPT_march_EQ)) {
179 // Otherwise, if we have -march= choose the base CPU for that arch.
180 MArch = A->getValue();
181 } else {
182 // Otherwise, use the Arch from the triple.
183 MArch = Triple.getArchName();
184 }
185
186 if (Triple.getOS() == llvm::Triple::NetBSD) {
187 if (MArch == "armv6")
188 return "arm1176jzf-s";
189 }
190
191 const char *result = llvm::StringSwitch<const char *>(MArch)
192 .Cases("armv2", "armv2a","arm2")
193 .Case("armv3", "arm6")
194 .Case("armv3m", "arm7m")
195 .Case("armv4", "strongarm")
196 .Case("armv4t", "arm7tdmi")
197 .Cases("armv5", "armv5t", "arm10tdmi")
198 .Cases("armv5e", "armv5te", "arm1026ejs")
199 .Case("armv5tej", "arm926ej-s")
200 .Cases("armv6", "armv6k", "arm1136jf-s")
201 .Case("armv6j", "arm1136j-s")
202 .Cases("armv6z", "armv6zk", "arm1176jzf-s")
203 .Case("armv6t2", "arm1156t2-s")
204 .Cases("armv6m", "armv6-m", "cortex-m0")
205 .Cases("armv7", "armv7a", "armv7-a", "cortex-a8")
206 .Cases("armv7l", "armv7-l", "cortex-a8")
207 .Cases("armv7f", "armv7-f", "cortex-a9-mp")
208 .Cases("armv7s", "armv7-s", "swift")
209 .Cases("armv7r", "armv7-r", "cortex-r4")
210 .Cases("armv7m", "armv7-m", "cortex-m3")
211 .Cases("armv7em", "armv7e-m", "cortex-m4")
212 .Cases("armv8", "armv8a", "armv8-a", "cortex-a53")
213 .Case("ep9312", "ep9312")
214 .Case("iwmmxt", "iwmmxt")
215 .Case("xscale", "xscale")
216 // If all else failed, return the most base CPU with thumb interworking
217 // supported by LLVM.
218 .Default(0);
219
220 if (result)
221 return result;
222
223 return
224 Triple.getEnvironment() == llvm::Triple::GNUEABIHF
225 ? "arm1176jzf-s"
226 : "arm7tdmi";
227}
228
229/// getLLVMArchSuffixForARM - Get the LLVM arch name to use for a particular
230/// CPU.
231//
232// FIXME: This is redundant with -mcpu, why does LLVM use this.
233// FIXME: tblgen this, or kill it!
234static const char *getLLVMArchSuffixForARM(StringRef CPU) {
235 return llvm::StringSwitch<const char *>(CPU)
236 .Case("strongarm", "v4")
237 .Cases("arm7tdmi", "arm7tdmi-s", "arm710t", "v4t")
238 .Cases("arm720t", "arm9", "arm9tdmi", "v4t")
239 .Cases("arm920", "arm920t", "arm922t", "v4t")
240 .Cases("arm940t", "ep9312","v4t")
241 .Cases("arm10tdmi", "arm1020t", "v5")
242 .Cases("arm9e", "arm926ej-s", "arm946e-s", "v5e")
243 .Cases("arm966e-s", "arm968e-s", "arm10e", "v5e")
244 .Cases("arm1020e", "arm1022e", "xscale", "iwmmxt", "v5e")
245 .Cases("arm1136j-s", "arm1136jf-s", "arm1176jz-s", "v6")
246 .Cases("arm1176jzf-s", "mpcorenovfp", "mpcore", "v6")
247 .Cases("arm1156t2-s", "arm1156t2f-s", "v6t2")
248 .Cases("cortex-a5", "cortex-a7", "cortex-a8", "v7")
249 .Cases("cortex-a9", "cortex-a12", "cortex-a15", "v7")
250 .Cases("cortex-r4", "cortex-r5", "v7r")
251 .Case("cortex-m0", "v6m")
252 .Case("cortex-m3", "v7m")
253 .Case("cortex-m4", "v7em")
254 .Case("cortex-a9-mp", "v7f")
255 .Case("swift", "v7s")
256 .Cases("cortex-a53", "cortex-a57", "v8")
257 .Default("");
258}
259
260std::string ToolChain::ComputeLLVMTriple(const ArgList &Args,
261 types::ID InputType) const {
262 switch (getTriple().getArch()) {
263 default:
264 return getTripleString();
265
266 case llvm::Triple::x86_64: {
267 llvm::Triple Triple = getTriple();
268 if (!Triple.isOSDarwin())
269 return getTripleString();
270
271 if (Arg *A = Args.getLastArg(options::OPT_march_EQ)) {
272 // x86_64h goes in the triple. Other -march options just use the
273 // vanilla triple we already have.
274 StringRef MArch = A->getValue();
275 if (MArch == "x86_64h")
276 Triple.setArchName(MArch);
277 }
278 return Triple.getTriple();
279 }
280 case llvm::Triple::arm:
281 case llvm::Triple::thumb: {
282 // FIXME: Factor into subclasses.
283 llvm::Triple Triple = getTriple();
284
285 // Thumb2 is the default for V7 on Darwin.
286 //
287 // FIXME: Thumb should just be another -target-feaure, not in the triple.
288 StringRef Suffix =
289 getLLVMArchSuffixForARM(getARMTargetCPU(Args, Triple));
290 bool ThumbDefault = Suffix.startswith("v6m") ||
291 (Suffix.startswith("v7") && getTriple().isOSDarwin());
292 std::string ArchName = "arm";
293
294 // Assembly files should start in ARM mode.
295 if (InputType != types::TY_PP_Asm &&
296 Args.hasFlag(options::OPT_mthumb, options::OPT_mno_thumb, ThumbDefault))
297 ArchName = "thumb";
298 Triple.setArchName(ArchName + Suffix.str());
299
300 return Triple.getTriple();
301 }
302 }
303}
304
305std::string ToolChain::ComputeEffectiveClangTriple(const ArgList &Args,
306 types::ID InputType) const {
307 // Diagnose use of Darwin OS deployment target arguments on non-Darwin.
308 if (Arg *A = Args.getLastArg(options::OPT_mmacosx_version_min_EQ,
309 options::OPT_miphoneos_version_min_EQ,
310 options::OPT_mios_simulator_version_min_EQ))
311 getDriver().Diag(diag::err_drv_clang_unsupported)
312 << A->getAsString(Args);
313
314 return ComputeLLVMTriple(Args, InputType);
315}
316
317void ToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
318 ArgStringList &CC1Args) const {
319 // Each toolchain should provide the appropriate include flags.
320}
321
322void ToolChain::addClangTargetOptions(const ArgList &DriverArgs,
323 ArgStringList &CC1Args) const {
324}
325
326ToolChain::RuntimeLibType ToolChain::GetRuntimeLibType(
327 const ArgList &Args) const
328{
329 if (Arg *A = Args.getLastArg(options::OPT_rtlib_EQ)) {
330 StringRef Value = A->getValue();
331 if (Value == "compiler-rt")
332 return ToolChain::RLT_CompilerRT;
333 if (Value == "libgcc")
334 return ToolChain::RLT_Libgcc;
335 getDriver().Diag(diag::err_drv_invalid_rtlib_name)
336 << A->getAsString(Args);
337 }
338
339 return GetDefaultRuntimeLibType();
340}
341
342ToolChain::CXXStdlibType ToolChain::GetCXXStdlibType(const ArgList &Args) const{
343 if (Arg *A = Args.getLastArg(options::OPT_stdlib_EQ)) {
344 StringRef Value = A->getValue();
345 if (Value == "libc++")
346 return ToolChain::CST_Libcxx;
347 if (Value == "libstdc++")
348 return ToolChain::CST_Libstdcxx;
349 getDriver().Diag(diag::err_drv_invalid_stdlib_name)
350 << A->getAsString(Args);
351 }
352
353 return ToolChain::CST_Libstdcxx;
354}
355
356/// \brief Utility function to add a system include directory to CC1 arguments.
357/*static*/ void ToolChain::addSystemInclude(const ArgList &DriverArgs,
358 ArgStringList &CC1Args,
359 const Twine &Path) {
360 CC1Args.push_back("-internal-isystem");
361 CC1Args.push_back(DriverArgs.MakeArgString(Path));
362}
363
364/// \brief Utility function to add a system include directory with extern "C"
365/// semantics to CC1 arguments.
366///
367/// Note that this should be used rarely, and only for directories that
368/// historically and for legacy reasons are treated as having implicit extern
369/// "C" semantics. These semantics are *ignored* by and large today, but its
370/// important to preserve the preprocessor changes resulting from the
371/// classification.
372/*static*/ void ToolChain::addExternCSystemInclude(const ArgList &DriverArgs,
373 ArgStringList &CC1Args,
374 const Twine &Path) {
375 CC1Args.push_back("-internal-externc-isystem");
376 CC1Args.push_back(DriverArgs.MakeArgString(Path));
377}
378
379void ToolChain::addExternCSystemIncludeIfExists(const ArgList &DriverArgs,
380 ArgStringList &CC1Args,
381 const Twine &Path) {
382 if (llvm::sys::fs::exists(Path))
383 addExternCSystemInclude(DriverArgs, CC1Args, Path);
384}
385
386/// \brief Utility function to add a list of system include directories to CC1.
387/*static*/ void ToolChain::addSystemIncludes(const ArgList &DriverArgs,
388 ArgStringList &CC1Args,
389 ArrayRef<StringRef> Paths) {
390 for (ArrayRef<StringRef>::iterator I = Paths.begin(), E = Paths.end();
391 I != E; ++I) {
392 CC1Args.push_back("-internal-isystem");
393 CC1Args.push_back(DriverArgs.MakeArgString(*I));
394 }
395}
396
397void ToolChain::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
398 ArgStringList &CC1Args) const {
399 // Header search paths should be handled by each of the subclasses.
400 // Historically, they have not been, and instead have been handled inside of
401 // the CC1-layer frontend. As the logic is hoisted out, this generic function
402 // will slowly stop being called.
403 //
404 // While it is being called, replicate a bit of a hack to propagate the
405 // '-stdlib=' flag down to CC1 so that it can in turn customize the C++
406 // header search paths with it. Once all systems are overriding this
407 // function, the CC1 flag and this line can be removed.
408 DriverArgs.AddAllArgs(CC1Args, options::OPT_stdlib_EQ);
409}
410
411void ToolChain::AddCXXStdlibLibArgs(const ArgList &Args,
412 ArgStringList &CmdArgs) const {
413 CXXStdlibType Type = GetCXXStdlibType(Args);
414
415 switch (Type) {
416 case ToolChain::CST_Libcxx:
417 CmdArgs.push_back("-lc++");
418 break;
419
420 case ToolChain::CST_Libstdcxx:
421 CmdArgs.push_back("-lstdc++");
422 break;
423 }
424}
425
426void ToolChain::AddCCKextLibArgs(const ArgList &Args,
427 ArgStringList &CmdArgs) const {
428 CmdArgs.push_back("-lcc_kext");
429}
430
431bool ToolChain::AddFastMathRuntimeIfAvailable(const ArgList &Args,
432 ArgStringList &CmdArgs) const {
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