1193323Sed//===- IntrinsicEmitter.cpp - Generate intrinsic information --------------===// 2193323Sed// 3193323Sed// The LLVM Compiler Infrastructure 4193323Sed// 5193323Sed// This file is distributed under the University of Illinois Open Source 6193323Sed// License. See LICENSE.TXT for details. 7193323Sed// 8193323Sed//===----------------------------------------------------------------------===// 9193323Sed// 10193323Sed// This tablegen backend emits information about intrinsic functions. 11193323Sed// 12193323Sed//===----------------------------------------------------------------------===// 13193323Sed 14239462Sdim#include "CodeGenIntrinsics.h" 15193323Sed#include "CodeGenTarget.h" 16239462Sdim#include "SequenceToOffsetTable.h" 17239462Sdim#include "llvm/ADT/StringExtras.h" 18243830Sdim#include "llvm/TableGen/Error.h" 19226633Sdim#include "llvm/TableGen/Record.h" 20239462Sdim#include "llvm/TableGen/StringMatcher.h" 21239462Sdim#include "llvm/TableGen/TableGenBackend.h" 22193323Sed#include <algorithm> 23193323Sedusing namespace llvm; 24193323Sed 25239462Sdimnamespace { 26239462Sdimclass IntrinsicEmitter { 27239462Sdim RecordKeeper &Records; 28239462Sdim bool TargetOnly; 29239462Sdim std::string TargetPrefix; 30239462Sdim 31239462Sdimpublic: 32239462Sdim IntrinsicEmitter(RecordKeeper &R, bool T) 33239462Sdim : Records(R), TargetOnly(T) {} 34239462Sdim 35239462Sdim void run(raw_ostream &OS); 36239462Sdim 37239462Sdim void EmitPrefix(raw_ostream &OS); 38239462Sdim 39239462Sdim void EmitEnumInfo(const std::vector<CodeGenIntrinsic> &Ints, 40239462Sdim raw_ostream &OS); 41239462Sdim 42239462Sdim void EmitFnNameRecognizer(const std::vector<CodeGenIntrinsic> &Ints, 43239462Sdim raw_ostream &OS); 44239462Sdim void EmitIntrinsicToNameTable(const std::vector<CodeGenIntrinsic> &Ints, 45239462Sdim raw_ostream &OS); 46239462Sdim void EmitIntrinsicToOverloadTable(const std::vector<CodeGenIntrinsic> &Ints, 47239462Sdim raw_ostream &OS); 48239462Sdim void EmitVerifier(const std::vector<CodeGenIntrinsic> &Ints, 49239462Sdim raw_ostream &OS); 50239462Sdim void EmitGenerator(const std::vector<CodeGenIntrinsic> &Ints, 51239462Sdim raw_ostream &OS); 52239462Sdim void EmitAttributes(const std::vector<CodeGenIntrinsic> &Ints, 53239462Sdim raw_ostream &OS); 54239462Sdim void EmitModRefBehavior(const std::vector<CodeGenIntrinsic> &Ints, 55239462Sdim raw_ostream &OS); 56239462Sdim void EmitIntrinsicToGCCBuiltinMap(const std::vector<CodeGenIntrinsic> &Ints, 57239462Sdim raw_ostream &OS); 58239462Sdim void EmitSuffix(raw_ostream &OS); 59239462Sdim}; 60239462Sdim} // End anonymous namespace 61239462Sdim 62193323Sed//===----------------------------------------------------------------------===// 63193323Sed// IntrinsicEmitter Implementation 64193323Sed//===----------------------------------------------------------------------===// 65193323Sed 66195340Sedvoid IntrinsicEmitter::run(raw_ostream &OS) { 67239462Sdim emitSourceFileHeader("Intrinsic Function Source Fragment", OS); 68239462Sdim 69193323Sed std::vector<CodeGenIntrinsic> Ints = LoadIntrinsics(Records, TargetOnly); 70239462Sdim 71193323Sed if (TargetOnly && !Ints.empty()) 72193323Sed TargetPrefix = Ints[0].TargetPrefix; 73193323Sed 74208599Srdivacky EmitPrefix(OS); 75208599Srdivacky 76193323Sed // Emit the enum information. 77193323Sed EmitEnumInfo(Ints, OS); 78193323Sed 79193323Sed // Emit the intrinsic ID -> name table. 80193323Sed EmitIntrinsicToNameTable(Ints, OS); 81193323Sed 82193323Sed // Emit the intrinsic ID -> overload table. 83193323Sed EmitIntrinsicToOverloadTable(Ints, OS); 84193323Sed 85193323Sed // Emit the function name recognizer. 86193323Sed EmitFnNameRecognizer(Ints, OS); 87263508Sdim 88193323Sed // Emit the intrinsic declaration generator. 89193323Sed EmitGenerator(Ints, OS); 90263508Sdim 91193323Sed // Emit the intrinsic parameter attributes. 92193323Sed EmitAttributes(Ints, OS); 93193323Sed 94193323Sed // Emit intrinsic alias analysis mod/ref behavior. 95193323Sed EmitModRefBehavior(Ints, OS); 96193323Sed 97193323Sed // Emit code to translate GCC builtins into LLVM intrinsics. 98193323Sed EmitIntrinsicToGCCBuiltinMap(Ints, OS); 99208599Srdivacky 100208599Srdivacky EmitSuffix(OS); 101193323Sed} 102193323Sed 103208599Srdivackyvoid IntrinsicEmitter::EmitPrefix(raw_ostream &OS) { 104208599Srdivacky OS << "// VisualStudio defines setjmp as _setjmp\n" 105218893Sdim "#if defined(_MSC_VER) && defined(setjmp) && \\\n" 106218893Sdim " !defined(setjmp_undefined_for_msvc)\n" 107218893Sdim "# pragma push_macro(\"setjmp\")\n" 108218893Sdim "# undef setjmp\n" 109218893Sdim "# define setjmp_undefined_for_msvc\n" 110208599Srdivacky "#endif\n\n"; 111208599Srdivacky} 112208599Srdivacky 113208599Srdivackyvoid IntrinsicEmitter::EmitSuffix(raw_ostream &OS) { 114218893Sdim OS << "#if defined(_MSC_VER) && defined(setjmp_undefined_for_msvc)\n" 115208599Srdivacky "// let's return it to _setjmp state\n" 116218893Sdim "# pragma pop_macro(\"setjmp\")\n" 117218893Sdim "# undef setjmp_undefined_for_msvc\n" 118208599Srdivacky "#endif\n\n"; 119208599Srdivacky} 120208599Srdivacky 121193323Sedvoid IntrinsicEmitter::EmitEnumInfo(const std::vector<CodeGenIntrinsic> &Ints, 122195340Sed raw_ostream &OS) { 123193323Sed OS << "// Enum values for Intrinsics.h\n"; 124193323Sed OS << "#ifdef GET_INTRINSIC_ENUM_VALUES\n"; 125193323Sed for (unsigned i = 0, e = Ints.size(); i != e; ++i) { 126193323Sed OS << " " << Ints[i].EnumName; 127193323Sed OS << ((i != e-1) ? ", " : " "); 128263508Sdim OS << std::string(40-Ints[i].EnumName.size(), ' ') 129193323Sed << "// " << Ints[i].Name << "\n"; 130193323Sed } 131193323Sed OS << "#endif\n\n"; 132193323Sed} 133193323Sed 134263508Sdimstruct IntrinsicNameSorter { 135263508Sdim IntrinsicNameSorter(const std::vector<CodeGenIntrinsic> &I) 136263508Sdim : Ints(I) {} 137263508Sdim 138263508Sdim // Sort in reverse order of intrinsic name so "abc.def" appears after 139263508Sdim // "abd.def.ghi" in the overridden name matcher 140263508Sdim bool operator()(unsigned i, unsigned j) { 141263508Sdim return Ints[i].Name > Ints[j].Name; 142263508Sdim } 143263508Sdim 144263508Sdimprivate: 145263508Sdim const std::vector<CodeGenIntrinsic> &Ints; 146263508Sdim}; 147263508Sdim 148193323Sedvoid IntrinsicEmitter:: 149263508SdimEmitFnNameRecognizer(const std::vector<CodeGenIntrinsic> &Ints, 150195340Sed raw_ostream &OS) { 151218893Sdim // Build a 'first character of function name' -> intrinsic # mapping. 152218893Sdim std::map<char, std::vector<unsigned> > IntMapping; 153193323Sed for (unsigned i = 0, e = Ints.size(); i != e; ++i) 154218893Sdim IntMapping[Ints[i].Name[5]].push_back(i); 155263508Sdim 156193323Sed OS << "// Function name -> enum value recognizer code.\n"; 157193323Sed OS << "#ifdef GET_FUNCTION_RECOGNIZER\n"; 158218893Sdim OS << " StringRef NameR(Name+6, Len-6); // Skip over 'llvm.'\n"; 159218893Sdim OS << " switch (Name[5]) { // Dispatch on first letter.\n"; 160218893Sdim OS << " default: break;\n"; 161263508Sdim IntrinsicNameSorter Sorter(Ints); 162218893Sdim // Emit the intrinsic matching stuff by first letter. 163218893Sdim for (std::map<char, std::vector<unsigned> >::iterator I = IntMapping.begin(), 164193323Sed E = IntMapping.end(); I != E; ++I) { 165218893Sdim OS << " case '" << I->first << "':\n"; 166218893Sdim std::vector<unsigned> &IntList = I->second; 167218893Sdim 168263508Sdim // Sort intrinsics in reverse order of their names 169263508Sdim std::sort(IntList.begin(), IntList.end(), Sorter); 170263508Sdim 171218893Sdim // Emit all the overloaded intrinsics first, build a table of the 172218893Sdim // non-overloaded ones. 173218893Sdim std::vector<StringMatcher::StringPair> MatchTable; 174263508Sdim 175218893Sdim for (unsigned i = 0, e = IntList.size(); i != e; ++i) { 176218893Sdim unsigned IntNo = IntList[i]; 177218893Sdim std::string Result = "return " + TargetPrefix + "Intrinsic::" + 178218893Sdim Ints[IntNo].EnumName + ";"; 179218893Sdim 180218893Sdim if (!Ints[IntNo].isOverloaded) { 181218893Sdim MatchTable.push_back(std::make_pair(Ints[IntNo].Name.substr(6),Result)); 182218893Sdim continue; 183218893Sdim } 184218893Sdim 185218893Sdim // For overloaded intrinsics, only the prefix needs to match 186218893Sdim std::string TheStr = Ints[IntNo].Name.substr(6); 187218893Sdim TheStr += '.'; // Require "bswap." instead of bswap. 188218893Sdim OS << " if (NameR.startswith(\"" << TheStr << "\")) " 189218893Sdim << Result << '\n'; 190193323Sed } 191263508Sdim 192218893Sdim // Emit the matcher logic for the fixed length strings. 193218893Sdim StringMatcher("NameR", MatchTable, OS).Emit(1); 194218893Sdim OS << " break; // end of '" << I->first << "' case.\n"; 195193323Sed } 196263508Sdim 197193323Sed OS << " }\n"; 198193323Sed OS << "#endif\n\n"; 199193323Sed} 200193323Sed 201193323Sedvoid IntrinsicEmitter:: 202263508SdimEmitIntrinsicToNameTable(const std::vector<CodeGenIntrinsic> &Ints, 203195340Sed raw_ostream &OS) { 204193323Sed OS << "// Intrinsic ID to name table\n"; 205193323Sed OS << "#ifdef GET_INTRINSIC_NAME_TABLE\n"; 206193323Sed OS << " // Note that entry #0 is the invalid intrinsic!\n"; 207193323Sed for (unsigned i = 0, e = Ints.size(); i != e; ++i) 208193323Sed OS << " \"" << Ints[i].Name << "\",\n"; 209193323Sed OS << "#endif\n\n"; 210193323Sed} 211193323Sed 212193323Sedvoid IntrinsicEmitter:: 213263508SdimEmitIntrinsicToOverloadTable(const std::vector<CodeGenIntrinsic> &Ints, 214195340Sed raw_ostream &OS) { 215234353Sdim OS << "// Intrinsic ID to overload bitset\n"; 216193323Sed OS << "#ifdef GET_INTRINSIC_OVERLOAD_TABLE\n"; 217234353Sdim OS << "static const uint8_t OTable[] = {\n"; 218234353Sdim OS << " 0"; 219193323Sed for (unsigned i = 0, e = Ints.size(); i != e; ++i) { 220234353Sdim // Add one to the index so we emit a null bit for the invalid #0 intrinsic. 221234353Sdim if ((i+1)%8 == 0) 222234353Sdim OS << ",\n 0"; 223193323Sed if (Ints[i].isOverloaded) 224234353Sdim OS << " | (1<<" << (i+1)%8 << ')'; 225193323Sed } 226234353Sdim OS << "\n};\n\n"; 227234353Sdim // OTable contains a true bit at the position if the intrinsic is overloaded. 228234353Sdim OS << "return (OTable[id/8] & (1 << (id%8))) != 0;\n"; 229193323Sed OS << "#endif\n\n"; 230193323Sed} 231193323Sed 232239462Sdim 233239462Sdim// NOTE: This must be kept in synch with the copy in lib/VMCore/Function.cpp! 234239462Sdimenum IIT_Info { 235239462Sdim // Common values should be encoded with 0-15. 236239462Sdim IIT_Done = 0, 237239462Sdim IIT_I1 = 1, 238239462Sdim IIT_I8 = 2, 239239462Sdim IIT_I16 = 3, 240239462Sdim IIT_I32 = 4, 241239462Sdim IIT_I64 = 5, 242249423Sdim IIT_F16 = 6, 243249423Sdim IIT_F32 = 7, 244249423Sdim IIT_F64 = 8, 245249423Sdim IIT_V2 = 9, 246249423Sdim IIT_V4 = 10, 247249423Sdim IIT_V8 = 11, 248249423Sdim IIT_V16 = 12, 249249423Sdim IIT_V32 = 13, 250239462Sdim IIT_PTR = 14, 251239462Sdim IIT_ARG = 15, 252249423Sdim 253239462Sdim // Values from 16+ are only encodable with the inefficient encoding. 254249423Sdim IIT_MMX = 16, 255249423Sdim IIT_METADATA = 17, 256249423Sdim IIT_EMPTYSTRUCT = 18, 257249423Sdim IIT_STRUCT2 = 19, 258249423Sdim IIT_STRUCT3 = 20, 259249423Sdim IIT_STRUCT4 = 21, 260249423Sdim IIT_STRUCT5 = 22, 261249423Sdim IIT_EXTEND_VEC_ARG = 23, 262249423Sdim IIT_TRUNC_VEC_ARG = 24, 263263508Sdim IIT_ANYPTR = 25, 264263508Sdim IIT_V1 = 26, 265263508Sdim IIT_VARARG = 27 266239462Sdim}; 267239462Sdim 268239462Sdim 269239462Sdimstatic void EncodeFixedValueType(MVT::SimpleValueType VT, 270239462Sdim std::vector<unsigned char> &Sig) { 271198090Srdivacky if (EVT(VT).isInteger()) { 272198090Srdivacky unsigned BitWidth = EVT(VT).getSizeInBits(); 273239462Sdim switch (BitWidth) { 274243830Sdim default: PrintFatalError("unhandled integer type width in intrinsic!"); 275239462Sdim case 1: return Sig.push_back(IIT_I1); 276239462Sdim case 8: return Sig.push_back(IIT_I8); 277239462Sdim case 16: return Sig.push_back(IIT_I16); 278239462Sdim case 32: return Sig.push_back(IIT_I32); 279239462Sdim case 64: return Sig.push_back(IIT_I64); 280239462Sdim } 281193323Sed } 282263508Sdim 283239462Sdim switch (VT) { 284243830Sdim default: PrintFatalError("unhandled MVT in intrinsic!"); 285249423Sdim case MVT::f16: return Sig.push_back(IIT_F16); 286239462Sdim case MVT::f32: return Sig.push_back(IIT_F32); 287239462Sdim case MVT::f64: return Sig.push_back(IIT_F64); 288239462Sdim case MVT::Metadata: return Sig.push_back(IIT_METADATA); 289239462Sdim case MVT::x86mmx: return Sig.push_back(IIT_MMX); 290239462Sdim // MVT::OtherVT is used to mean the empty struct type here. 291239462Sdim case MVT::Other: return Sig.push_back(IIT_EMPTYSTRUCT); 292263508Sdim // MVT::isVoid is used to represent varargs here. 293263508Sdim case MVT::isVoid: return Sig.push_back(IIT_VARARG); 294239462Sdim } 295193323Sed} 296193323Sed 297239462Sdim#ifdef _MSC_VER 298239462Sdim#pragma optimize("",off) // MSVC 2010 optimizer can't deal with this function. 299263508Sdim#endif 300193323Sed 301239462Sdimstatic void EncodeFixedType(Record *R, std::vector<unsigned char> &ArgCodes, 302239462Sdim std::vector<unsigned char> &Sig) { 303263508Sdim 304239462Sdim if (R->isSubClassOf("LLVMMatchType")) { 305239462Sdim unsigned Number = R->getValueAsInt("Number"); 306239462Sdim assert(Number < ArgCodes.size() && "Invalid matching number!"); 307239462Sdim if (R->isSubClassOf("LLVMExtendedElementVectorType")) 308239462Sdim Sig.push_back(IIT_EXTEND_VEC_ARG); 309239462Sdim else if (R->isSubClassOf("LLVMTruncatedElementVectorType")) 310239462Sdim Sig.push_back(IIT_TRUNC_VEC_ARG); 311239462Sdim else 312239462Sdim Sig.push_back(IIT_ARG); 313239462Sdim return Sig.push_back((Number << 2) | ArgCodes[Number]); 314239462Sdim } 315263508Sdim 316239462Sdim MVT::SimpleValueType VT = getValueType(R->getValueAsDef("VT")); 317193323Sed 318239462Sdim unsigned Tmp = 0; 319239462Sdim switch (VT) { 320239462Sdim default: break; 321239462Sdim case MVT::iPTRAny: ++Tmp; // FALL THROUGH. 322239462Sdim case MVT::vAny: ++Tmp; // FALL THROUGH. 323239462Sdim case MVT::fAny: ++Tmp; // FALL THROUGH. 324239462Sdim case MVT::iAny: { 325239462Sdim // If this is an "any" valuetype, then the type is the type of the next 326263508Sdim // type in the list specified to getIntrinsic(). 327239462Sdim Sig.push_back(IIT_ARG); 328263508Sdim 329239462Sdim // Figure out what arg # this is consuming, and remember what kind it was. 330239462Sdim unsigned ArgNo = ArgCodes.size(); 331239462Sdim ArgCodes.push_back(Tmp); 332263508Sdim 333239462Sdim // Encode what sort of argument it must be in the low 2 bits of the ArgNo. 334239462Sdim return Sig.push_back((ArgNo << 2) | Tmp); 335193323Sed } 336263508Sdim 337239462Sdim case MVT::iPTR: { 338239462Sdim unsigned AddrSpace = 0; 339239462Sdim if (R->isSubClassOf("LLVMQualPointerType")) { 340239462Sdim AddrSpace = R->getValueAsInt("AddrSpace"); 341239462Sdim assert(AddrSpace < 256 && "Address space exceeds 255"); 342239462Sdim } 343239462Sdim if (AddrSpace) { 344239462Sdim Sig.push_back(IIT_ANYPTR); 345239462Sdim Sig.push_back(AddrSpace); 346239462Sdim } else { 347239462Sdim Sig.push_back(IIT_PTR); 348239462Sdim } 349239462Sdim return EncodeFixedType(R->getValueAsDef("ElTy"), ArgCodes, Sig); 350239462Sdim } 351239462Sdim } 352263508Sdim 353239462Sdim if (EVT(VT).isVector()) { 354239462Sdim EVT VVT = VT; 355239462Sdim switch (VVT.getVectorNumElements()) { 356243830Sdim default: PrintFatalError("unhandled vector type width in intrinsic!"); 357263508Sdim case 1: Sig.push_back(IIT_V1); break; 358239462Sdim case 2: Sig.push_back(IIT_V2); break; 359239462Sdim case 4: Sig.push_back(IIT_V4); break; 360239462Sdim case 8: Sig.push_back(IIT_V8); break; 361239462Sdim case 16: Sig.push_back(IIT_V16); break; 362239462Sdim case 32: Sig.push_back(IIT_V32); break; 363239462Sdim } 364263508Sdim 365239462Sdim return EncodeFixedValueType(VVT.getVectorElementType(). 366239462Sdim getSimpleVT().SimpleTy, Sig); 367239462Sdim } 368193323Sed 369239462Sdim EncodeFixedValueType(VT, Sig); 370193323Sed} 371193323Sed 372239462Sdim#ifdef _MSC_VER 373239462Sdim#pragma optimize("",on) 374239462Sdim#endif 375193323Sed 376239462Sdim/// ComputeFixedEncoding - If we can encode the type signature for this 377239462Sdim/// intrinsic into 32 bits, return it. If not, return ~0U. 378239462Sdimstatic void ComputeFixedEncoding(const CodeGenIntrinsic &Int, 379239462Sdim std::vector<unsigned char> &TypeSig) { 380239462Sdim std::vector<unsigned char> ArgCodes; 381263508Sdim 382239462Sdim if (Int.IS.RetVTs.empty()) 383239462Sdim TypeSig.push_back(IIT_Done); 384239462Sdim else if (Int.IS.RetVTs.size() == 1 && 385239462Sdim Int.IS.RetVTs[0] == MVT::isVoid) 386239462Sdim TypeSig.push_back(IIT_Done); 387239462Sdim else { 388239462Sdim switch (Int.IS.RetVTs.size()) { 389239462Sdim case 1: break; 390239462Sdim case 2: TypeSig.push_back(IIT_STRUCT2); break; 391239462Sdim case 3: TypeSig.push_back(IIT_STRUCT3); break; 392239462Sdim case 4: TypeSig.push_back(IIT_STRUCT4); break; 393239462Sdim case 5: TypeSig.push_back(IIT_STRUCT5); break; 394239462Sdim default: assert(0 && "Unhandled case in struct"); 395239462Sdim } 396263508Sdim 397239462Sdim for (unsigned i = 0, e = Int.IS.RetVTs.size(); i != e; ++i) 398239462Sdim EncodeFixedType(Int.IS.RetTypeDefs[i], ArgCodes, TypeSig); 399193323Sed } 400263508Sdim 401239462Sdim for (unsigned i = 0, e = Int.IS.ParamTypeDefs.size(); i != e; ++i) 402239462Sdim EncodeFixedType(Int.IS.ParamTypeDefs[i], ArgCodes, TypeSig); 403193323Sed} 404193323Sed 405239462Sdimstatic void printIITEntry(raw_ostream &OS, unsigned char X) { 406239462Sdim OS << (unsigned)X; 407193323Sed} 408193323Sed 409263508Sdimvoid IntrinsicEmitter::EmitGenerator(const std::vector<CodeGenIntrinsic> &Ints, 410239462Sdim raw_ostream &OS) { 411239462Sdim // If we can compute a 32-bit fixed encoding for this intrinsic, do so and 412239462Sdim // capture it in this vector, otherwise store a ~0U. 413239462Sdim std::vector<unsigned> FixedEncodings; 414263508Sdim 415239462Sdim SequenceToOffsetTable<std::vector<unsigned char> > LongEncodingTable; 416263508Sdim 417239462Sdim std::vector<unsigned char> TypeSig; 418263508Sdim 419193323Sed // Compute the unique argument type info. 420239462Sdim for (unsigned i = 0, e = Ints.size(); i != e; ++i) { 421239462Sdim // Get the signature for the intrinsic. 422239462Sdim TypeSig.clear(); 423239462Sdim ComputeFixedEncoding(Ints[i], TypeSig); 424193323Sed 425239462Sdim // Check to see if we can encode it into a 32-bit word. We can only encode 426239462Sdim // 8 nibbles into a 32-bit word. 427239462Sdim if (TypeSig.size() <= 8) { 428239462Sdim bool Failed = false; 429239462Sdim unsigned Result = 0; 430239462Sdim for (unsigned i = 0, e = TypeSig.size(); i != e; ++i) { 431239462Sdim // If we had an unencodable argument, bail out. 432239462Sdim if (TypeSig[i] > 15) { 433239462Sdim Failed = true; 434239462Sdim break; 435239462Sdim } 436239462Sdim Result = (Result << 4) | TypeSig[e-i-1]; 437193323Sed } 438263508Sdim 439239462Sdim // If this could be encoded into a 31-bit word, return it. 440239462Sdim if (!Failed && (Result >> 31) == 0) { 441239462Sdim FixedEncodings.push_back(Result); 442239462Sdim continue; 443239462Sdim } 444193323Sed } 445193323Sed 446239462Sdim // Otherwise, we're going to unique the sequence into the 447239462Sdim // LongEncodingTable, and use its offset in the 32-bit table instead. 448239462Sdim LongEncodingTable.add(TypeSig); 449263508Sdim 450239462Sdim // This is a placehold that we'll replace after the table is laid out. 451239462Sdim FixedEncodings.push_back(~0U); 452193323Sed } 453263508Sdim 454239462Sdim LongEncodingTable.layout(); 455263508Sdim 456239462Sdim OS << "// Global intrinsic function declaration type table.\n"; 457239462Sdim OS << "#ifdef GET_INTRINSIC_GENERATOR_GLOBAL\n"; 458193323Sed 459239462Sdim OS << "static const unsigned IIT_Table[] = {\n "; 460263508Sdim 461239462Sdim for (unsigned i = 0, e = FixedEncodings.size(); i != e; ++i) { 462239462Sdim if ((i & 7) == 7) 463239462Sdim OS << "\n "; 464263508Sdim 465239462Sdim // If the entry fit in the table, just emit it. 466239462Sdim if (FixedEncodings[i] != ~0U) { 467239462Sdim OS << "0x" << utohexstr(FixedEncodings[i]) << ", "; 468239462Sdim continue; 469193323Sed } 470263508Sdim 471239462Sdim TypeSig.clear(); 472239462Sdim ComputeFixedEncoding(Ints[i], TypeSig); 473193323Sed 474263508Sdim 475239462Sdim // Otherwise, emit the offset into the long encoding table. We emit it this 476239462Sdim // way so that it is easier to read the offset in the .def file. 477239462Sdim OS << "(1U<<31) | " << LongEncodingTable.get(TypeSig) << ", "; 478239462Sdim } 479263508Sdim 480239462Sdim OS << "0\n};\n\n"; 481263508Sdim 482239462Sdim // Emit the shared table of register lists. 483239462Sdim OS << "static const unsigned char IIT_LongEncodingTable[] = {\n"; 484239462Sdim if (!LongEncodingTable.empty()) 485239462Sdim LongEncodingTable.emit(OS, printIITEntry); 486239462Sdim OS << " 255\n};\n\n"; 487263508Sdim 488239462Sdim OS << "#endif\n\n"; // End of GET_INTRINSIC_GENERATOR_GLOBAL 489239462Sdim} 490193323Sed 491239462Sdimenum ModRefKind { 492239462Sdim MRK_none, 493239462Sdim MRK_readonly, 494239462Sdim MRK_readnone 495239462Sdim}; 496239462Sdim 497239462Sdimstatic ModRefKind getModRefKind(const CodeGenIntrinsic &intrinsic) { 498239462Sdim switch (intrinsic.ModRef) { 499239462Sdim case CodeGenIntrinsic::NoMem: 500239462Sdim return MRK_readnone; 501239462Sdim case CodeGenIntrinsic::ReadArgMem: 502239462Sdim case CodeGenIntrinsic::ReadMem: 503239462Sdim return MRK_readonly; 504239462Sdim case CodeGenIntrinsic::ReadWriteArgMem: 505239462Sdim case CodeGenIntrinsic::ReadWriteMem: 506239462Sdim return MRK_none; 507193323Sed } 508239462Sdim llvm_unreachable("bad mod-ref kind"); 509193323Sed} 510193323Sed 511223017Sdimnamespace { 512239462Sdimstruct AttributeComparator { 513239462Sdim bool operator()(const CodeGenIntrinsic *L, const CodeGenIntrinsic *R) const { 514239462Sdim // Sort throwing intrinsics after non-throwing intrinsics. 515239462Sdim if (L->canThrow != R->canThrow) 516239462Sdim return R->canThrow; 517223017Sdim 518239462Sdim if (L->isNoReturn != R->isNoReturn) 519239462Sdim return R->isNoReturn; 520223017Sdim 521239462Sdim // Try to order by readonly/readnone attribute. 522239462Sdim ModRefKind LK = getModRefKind(*L); 523239462Sdim ModRefKind RK = getModRefKind(*R); 524239462Sdim if (LK != RK) return (LK > RK); 525223017Sdim 526239462Sdim // Order by argument attributes. 527239462Sdim // This is reliable because each side is already sorted internally. 528239462Sdim return (L->ArgumentAttributes < R->ArgumentAttributes); 529239462Sdim } 530239462Sdim}; 531239462Sdim} // End anonymous namespace 532223017Sdim 533193323Sed/// EmitAttributes - This emits the Intrinsic::getAttributes method. 534193323Sedvoid IntrinsicEmitter:: 535195340SedEmitAttributes(const std::vector<CodeGenIntrinsic> &Ints, raw_ostream &OS) { 536193323Sed OS << "// Add parameter attributes that are not common to all intrinsics.\n"; 537193323Sed OS << "#ifdef GET_INTRINSIC_ATTRIBUTES\n"; 538193323Sed if (TargetOnly) 539249423Sdim OS << "static AttributeSet getAttributes(LLVMContext &C, " << TargetPrefix 540223017Sdim << "Intrinsic::ID id) {\n"; 541193323Sed else 542249423Sdim OS << "AttributeSet Intrinsic::getAttributes(LLVMContext &C, ID id) {\n"; 543223017Sdim 544234353Sdim // Compute the maximum number of attribute arguments and the map 545234353Sdim typedef std::map<const CodeGenIntrinsic*, unsigned, 546234353Sdim AttributeComparator> UniqAttrMapTy; 547234353Sdim UniqAttrMapTy UniqAttributes; 548223017Sdim unsigned maxArgAttrs = 0; 549234353Sdim unsigned AttrNum = 0; 550193323Sed for (unsigned i = 0, e = Ints.size(); i != e; ++i) { 551223017Sdim const CodeGenIntrinsic &intrinsic = Ints[i]; 552223017Sdim maxArgAttrs = 553223017Sdim std::max(maxArgAttrs, unsigned(intrinsic.ArgumentAttributes.size())); 554234353Sdim unsigned &N = UniqAttributes[&intrinsic]; 555234353Sdim if (N) continue; 556234353Sdim assert(AttrNum < 256 && "Too many unique attributes for table!"); 557234353Sdim N = ++AttrNum; 558193323Sed } 559223017Sdim 560249423Sdim // Emit an array of AttributeSet. Most intrinsics will have at least one 561249423Sdim // entry, for the function itself (index ~1), which is usually nounwind. 562234353Sdim OS << " static const uint8_t IntrinsicsToAttributesMap[] = {\n"; 563193323Sed 564234353Sdim for (unsigned i = 0, e = Ints.size(); i != e; ++i) { 565234353Sdim const CodeGenIntrinsic &intrinsic = Ints[i]; 566193323Sed 567234353Sdim OS << " " << UniqAttributes[&intrinsic] << ", // " 568234353Sdim << intrinsic.Name << "\n"; 569234353Sdim } 570234353Sdim OS << " };\n\n"; 571193323Sed 572249423Sdim OS << " AttributeSet AS[" << maxArgAttrs+1 << "];\n"; 573234353Sdim OS << " unsigned NumAttrs = 0;\n"; 574234353Sdim OS << " if (id != 0) {\n"; 575234353Sdim OS << " switch(IntrinsicsToAttributesMap[id - "; 576234353Sdim if (TargetOnly) 577234353Sdim OS << "Intrinsic::num_intrinsics"; 578234353Sdim else 579234353Sdim OS << "1"; 580234353Sdim OS << "]) {\n"; 581234353Sdim OS << " default: llvm_unreachable(\"Invalid attribute number\");\n"; 582234353Sdim for (UniqAttrMapTy::const_iterator I = UniqAttributes.begin(), 583234353Sdim E = UniqAttributes.end(); I != E; ++I) { 584263508Sdim OS << " case " << I->second << ": {\n"; 585223017Sdim 586234353Sdim const CodeGenIntrinsic &intrinsic = *(I->first); 587223017Sdim 588223017Sdim // Keep track of the number of attributes we're writing out. 589223017Sdim unsigned numAttrs = 0; 590223017Sdim 591223017Sdim // The argument attributes are alreadys sorted by argument index. 592243830Sdim unsigned ai = 0, ae = intrinsic.ArgumentAttributes.size(); 593243830Sdim if (ae) { 594243830Sdim while (ai != ae) { 595243830Sdim unsigned argNo = intrinsic.ArgumentAttributes[ai].first; 596234353Sdim 597263508Sdim OS << " const Attribute::AttrKind AttrParam" << argNo + 1 <<"[]= {"; 598263508Sdim bool addComma = false; 599193323Sed 600243830Sdim do { 601243830Sdim switch (intrinsic.ArgumentAttributes[ai].second) { 602243830Sdim case CodeGenIntrinsic::NoCapture: 603263508Sdim if (addComma) 604263508Sdim OS << ","; 605263508Sdim OS << "Attribute::NoCapture"; 606263508Sdim addComma = true; 607243830Sdim break; 608263508Sdim case CodeGenIntrinsic::ReadOnly: 609263508Sdim if (addComma) 610263508Sdim OS << ","; 611263508Sdim OS << "Attribute::ReadOnly"; 612263508Sdim addComma = true; 613263508Sdim break; 614263508Sdim case CodeGenIntrinsic::ReadNone: 615263508Sdim if (addComma) 616263508Sdim OS << ","; 617263508Sdim OS << "Attributes::ReadNone"; 618263508Sdim addComma = true; 619263508Sdim break; 620243830Sdim } 621223017Sdim 622243830Sdim ++ai; 623243830Sdim } while (ai != ae && intrinsic.ArgumentAttributes[ai].first == argNo); 624263508Sdim OS << "};\n"; 625249423Sdim OS << " AS[" << numAttrs++ << "] = AttributeSet::get(C, " 626263508Sdim << argNo+1 << ", AttrParam" << argNo +1 << ");\n"; 627243830Sdim } 628223017Sdim } 629223017Sdim 630223017Sdim ModRefKind modRef = getModRefKind(intrinsic); 631223017Sdim 632239462Sdim if (!intrinsic.canThrow || modRef || intrinsic.isNoReturn) { 633263508Sdim OS << " const Attribute::AttrKind Atts[] = {"; 634263508Sdim bool addComma = false; 635263508Sdim if (!intrinsic.canThrow) { 636263508Sdim OS << "Attribute::NoUnwind"; 637263508Sdim addComma = true; 638263508Sdim } 639263508Sdim if (intrinsic.isNoReturn) { 640263508Sdim if (addComma) 641263508Sdim OS << ","; 642263508Sdim OS << "Attribute::NoReturn"; 643263508Sdim addComma = true; 644263508Sdim } 645239462Sdim 646223017Sdim switch (modRef) { 647223017Sdim case MRK_none: break; 648239462Sdim case MRK_readonly: 649263508Sdim if (addComma) 650263508Sdim OS << ","; 651263508Sdim OS << "Attribute::ReadOnly"; 652239462Sdim break; 653239462Sdim case MRK_readnone: 654263508Sdim if (addComma) 655263508Sdim OS << ","; 656263508Sdim OS << "Attribute::ReadNone"; 657239462Sdim break; 658223017Sdim } 659263508Sdim OS << "};\n"; 660249423Sdim OS << " AS[" << numAttrs++ << "] = AttributeSet::get(C, " 661263508Sdim << "AttributeSet::FunctionIndex, Atts);\n"; 662193323Sed } 663223017Sdim 664223017Sdim if (numAttrs) { 665234353Sdim OS << " NumAttrs = " << numAttrs << ";\n"; 666234353Sdim OS << " break;\n"; 667263508Sdim OS << " }\n"; 668223017Sdim } else { 669249423Sdim OS << " return AttributeSet();\n"; 670223017Sdim } 671193323Sed } 672263508Sdim 673234353Sdim OS << " }\n"; 674193323Sed OS << " }\n"; 675249423Sdim OS << " return AttributeSet::get(C, ArrayRef<AttributeSet>(AS, " 676239462Sdim "NumAttrs));\n"; 677193323Sed OS << "}\n"; 678193323Sed OS << "#endif // GET_INTRINSIC_ATTRIBUTES\n\n"; 679193323Sed} 680193323Sed 681193323Sed/// EmitModRefBehavior - Determine intrinsic alias analysis mod/ref behavior. 682193323Sedvoid IntrinsicEmitter:: 683195340SedEmitModRefBehavior(const std::vector<CodeGenIntrinsic> &Ints, raw_ostream &OS){ 684234353Sdim OS << "// Determine intrinsic alias analysis mod/ref behavior.\n" 685234353Sdim << "#ifdef GET_INTRINSIC_MODREF_BEHAVIOR\n" 686234353Sdim << "assert(iid <= Intrinsic::" << Ints.back().EnumName << " && " 687234353Sdim << "\"Unknown intrinsic.\");\n\n"; 688234353Sdim 689234353Sdim OS << "static const uint8_t IntrinsicModRefBehavior[] = {\n" 690234353Sdim << " /* invalid */ UnknownModRefBehavior,\n"; 691193323Sed for (unsigned i = 0, e = Ints.size(); i != e; ++i) { 692234353Sdim OS << " /* " << TargetPrefix << Ints[i].EnumName << " */ "; 693193323Sed switch (Ints[i].ModRef) { 694193323Sed case CodeGenIntrinsic::NoMem: 695234353Sdim OS << "DoesNotAccessMemory,\n"; 696193323Sed break; 697193323Sed case CodeGenIntrinsic::ReadArgMem: 698234353Sdim OS << "OnlyReadsArgumentPointees,\n"; 699218893Sdim break; 700193323Sed case CodeGenIntrinsic::ReadMem: 701234353Sdim OS << "OnlyReadsMemory,\n"; 702193323Sed break; 703212904Sdim case CodeGenIntrinsic::ReadWriteArgMem: 704234353Sdim OS << "OnlyAccessesArgumentPointees,\n"; 705193323Sed break; 706234353Sdim case CodeGenIntrinsic::ReadWriteMem: 707234353Sdim OS << "UnknownModRefBehavior,\n"; 708234353Sdim break; 709193323Sed } 710193323Sed } 711234353Sdim OS << "};\n\n" 712234353Sdim << "return static_cast<ModRefBehavior>(IntrinsicModRefBehavior[iid]);\n" 713234353Sdim << "#endif // GET_INTRINSIC_MODREF_BEHAVIOR\n\n"; 714193323Sed} 715193323Sed 716193323Sed/// EmitTargetBuiltins - All of the builtins in the specified map are for the 717193323Sed/// same target, and we already checked it. 718193323Sedstatic void EmitTargetBuiltins(const std::map<std::string, std::string> &BIM, 719193323Sed const std::string &TargetPrefix, 720195340Sed raw_ostream &OS) { 721263508Sdim 722218893Sdim std::vector<StringMatcher::StringPair> Results; 723263508Sdim 724218893Sdim for (std::map<std::string, std::string>::const_iterator I = BIM.begin(), 725218893Sdim E = BIM.end(); I != E; ++I) { 726218893Sdim std::string ResultCode = 727218893Sdim "return " + TargetPrefix + "Intrinsic::" + I->second + ";"; 728218893Sdim Results.push_back(StringMatcher::StringPair(I->first, ResultCode)); 729193323Sed } 730218893Sdim 731218893Sdim StringMatcher("BuiltinName", Results, OS).Emit(); 732193323Sed} 733193323Sed 734263508Sdim 735193323Sedvoid IntrinsicEmitter:: 736263508SdimEmitIntrinsicToGCCBuiltinMap(const std::vector<CodeGenIntrinsic> &Ints, 737195340Sed raw_ostream &OS) { 738193323Sed typedef std::map<std::string, std::map<std::string, std::string> > BIMTy; 739193323Sed BIMTy BuiltinMap; 740193323Sed for (unsigned i = 0, e = Ints.size(); i != e; ++i) { 741193323Sed if (!Ints[i].GCCBuiltinName.empty()) { 742193323Sed // Get the map for this target prefix. 743193323Sed std::map<std::string, std::string> &BIM =BuiltinMap[Ints[i].TargetPrefix]; 744263508Sdim 745193323Sed if (!BIM.insert(std::make_pair(Ints[i].GCCBuiltinName, 746193323Sed Ints[i].EnumName)).second) 747243830Sdim PrintFatalError("Intrinsic '" + Ints[i].TheDef->getName() + 748243830Sdim "': duplicate GCC builtin name!"); 749193323Sed } 750193323Sed } 751263508Sdim 752193323Sed OS << "// Get the LLVM intrinsic that corresponds to a GCC builtin.\n"; 753193323Sed OS << "// This is used by the C front-end. The GCC builtin name is passed\n"; 754193323Sed OS << "// in as BuiltinName, and a target prefix (e.g. 'ppc') is passed\n"; 755193323Sed OS << "// in as TargetPrefix. The result is assigned to 'IntrinsicID'.\n"; 756193323Sed OS << "#ifdef GET_LLVM_INTRINSIC_FOR_GCC_BUILTIN\n"; 757263508Sdim 758193323Sed if (TargetOnly) { 759193323Sed OS << "static " << TargetPrefix << "Intrinsic::ID " 760193323Sed << "getIntrinsicForGCCBuiltin(const char " 761218893Sdim << "*TargetPrefixStr, const char *BuiltinNameStr) {\n"; 762193323Sed } else { 763193323Sed OS << "Intrinsic::ID Intrinsic::getIntrinsicForGCCBuiltin(const char " 764218893Sdim << "*TargetPrefixStr, const char *BuiltinNameStr) {\n"; 765193323Sed } 766263508Sdim 767218893Sdim OS << " StringRef BuiltinName(BuiltinNameStr);\n"; 768218893Sdim OS << " StringRef TargetPrefix(TargetPrefixStr);\n\n"; 769263508Sdim 770193323Sed // Note: this could emit significantly better code if we cared. 771193323Sed for (BIMTy::iterator I = BuiltinMap.begin(), E = BuiltinMap.end();I != E;++I){ 772193323Sed OS << " "; 773193323Sed if (!I->first.empty()) 774218893Sdim OS << "if (TargetPrefix == \"" << I->first << "\") "; 775193323Sed else 776193323Sed OS << "/* Target Independent Builtins */ "; 777193323Sed OS << "{\n"; 778193323Sed 779193323Sed // Emit the comparisons for this target prefix. 780193323Sed EmitTargetBuiltins(I->second, TargetPrefix, OS); 781193323Sed OS << " }\n"; 782193323Sed } 783218893Sdim OS << " return "; 784218893Sdim if (!TargetPrefix.empty()) 785218893Sdim OS << "(" << TargetPrefix << "Intrinsic::ID)"; 786218893Sdim OS << "Intrinsic::not_intrinsic;\n"; 787193323Sed OS << "}\n"; 788193323Sed OS << "#endif\n\n"; 789193323Sed} 790239462Sdim 791239462Sdimnamespace llvm { 792239462Sdim 793239462Sdimvoid EmitIntrinsics(RecordKeeper &RK, raw_ostream &OS, bool TargetOnly = false) { 794239462Sdim IntrinsicEmitter(RK, TargetOnly).run(OS); 795239462Sdim} 796239462Sdim 797239462Sdim} // End llvm namespace 798