1 //===- IntrinsicEmitter.cpp - Generate intrinsic information --------------===// 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 // This tablegen backend emits information about intrinsic functions. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "CodeGenIntrinsics.h" 15 #include "CodeGenTarget.h" 16 #include "SequenceToOffsetTable.h" 17 #include "TableGenBackends.h" 18 #include "llvm/ADT/StringExtras.h" 19 #include "llvm/TableGen/Error.h" 20 #include "llvm/TableGen/Record.h" 21 #include "llvm/TableGen/StringMatcher.h" 22 #include "llvm/TableGen/TableGenBackend.h" 23 #include <algorithm> 24 using namespace llvm; 25 26 namespace { 27 class IntrinsicEmitter { 28 RecordKeeper &Records; 29 bool TargetOnly; 30 std::string TargetPrefix; 31 32 public: 33 IntrinsicEmitter(RecordKeeper &R, bool T) 34 : Records(R), TargetOnly(T) {} 35 36 void run(raw_ostream &OS); 37 38 void EmitPrefix(raw_ostream &OS); 39 40 void EmitEnumInfo(const std::vector<CodeGenIntrinsic> &Ints, 41 raw_ostream &OS); 42 43 void EmitFnNameRecognizer(const std::vector<CodeGenIntrinsic> &Ints, 44 raw_ostream &OS); 45 void EmitIntrinsicToNameTable(const std::vector<CodeGenIntrinsic> &Ints, 46 raw_ostream &OS); 47 void EmitIntrinsicToOverloadTable(const std::vector<CodeGenIntrinsic> &Ints, 48 raw_ostream &OS); 49 void EmitGenerator(const std::vector<CodeGenIntrinsic> &Ints, 50 raw_ostream &OS); 51 void EmitAttributes(const std::vector<CodeGenIntrinsic> &Ints, 52 raw_ostream &OS); 53 void EmitIntrinsicToGCCBuiltinMap(const std::vector<CodeGenIntrinsic> &Ints, 54 raw_ostream &OS); 55 void EmitIntrinsicToMSBuiltinMap(const std::vector<CodeGenIntrinsic> &Ints, 56 raw_ostream &OS); 57 void EmitSuffix(raw_ostream &OS); 58 }; 59 } // End anonymous namespace 60 61 //===----------------------------------------------------------------------===// 62 // IntrinsicEmitter Implementation 63 //===----------------------------------------------------------------------===// 64 65 void IntrinsicEmitter::run(raw_ostream &OS) { 66 emitSourceFileHeader("Intrinsic Function Source Fragment", OS); 67 68 std::vector<CodeGenIntrinsic> Ints = LoadIntrinsics(Records, TargetOnly); 69 70 if (TargetOnly && !Ints.empty()) 71 TargetPrefix = Ints[0].TargetPrefix; 72 73 EmitPrefix(OS); 74 75 // Emit the enum information. 76 EmitEnumInfo(Ints, OS); 77 78 // Emit the intrinsic ID -> name table. 79 EmitIntrinsicToNameTable(Ints, OS); 80 81 // Emit the intrinsic ID -> overload table. 82 EmitIntrinsicToOverloadTable(Ints, OS); 83 84 // Emit the function name recognizer. 85 EmitFnNameRecognizer(Ints, OS); 86 87 // Emit the intrinsic declaration generator. 88 EmitGenerator(Ints, OS); 89 90 // Emit the intrinsic parameter attributes. 91 EmitAttributes(Ints, OS); 92 93 // Emit code to translate GCC builtins into LLVM intrinsics. 94 EmitIntrinsicToGCCBuiltinMap(Ints, OS); 95 96 // Emit code to translate MS builtins into LLVM intrinsics. 97 EmitIntrinsicToMSBuiltinMap(Ints, OS); 98 99 EmitSuffix(OS); 100 } 101 102 void IntrinsicEmitter::EmitPrefix(raw_ostream &OS) { 103 OS << "// VisualStudio defines setjmp as _setjmp\n" 104 "#if defined(_MSC_VER) && defined(setjmp) && \\\n" 105 " !defined(setjmp_undefined_for_msvc)\n" 106 "# pragma push_macro(\"setjmp\")\n" 107 "# undef setjmp\n" 108 "# define setjmp_undefined_for_msvc\n" 109 "#endif\n\n"; 110 } 111 112 void IntrinsicEmitter::EmitSuffix(raw_ostream &OS) { 113 OS << "#if defined(_MSC_VER) && defined(setjmp_undefined_for_msvc)\n" 114 "// let's return it to _setjmp state\n" 115 "# pragma pop_macro(\"setjmp\")\n" 116 "# undef setjmp_undefined_for_msvc\n" 117 "#endif\n\n"; 118 } 119 120 void IntrinsicEmitter::EmitEnumInfo(const std::vector<CodeGenIntrinsic> &Ints, 121 raw_ostream &OS) { 122 OS << "// Enum values for Intrinsics.h\n"; 123 OS << "#ifdef GET_INTRINSIC_ENUM_VALUES\n"; 124 for (unsigned i = 0, e = Ints.size(); i != e; ++i) { 125 OS << " " << Ints[i].EnumName; 126 OS << ((i != e-1) ? ", " : " "); 127 if (Ints[i].EnumName.size() < 40) 128 OS << std::string(40-Ints[i].EnumName.size(), ' '); 129 OS << " // " << Ints[i].Name << "\n"; 130 } 131 OS << "#endif\n\n"; 132 } 133 134 void IntrinsicEmitter:: 135 EmitFnNameRecognizer(const std::vector<CodeGenIntrinsic> &Ints, 136 raw_ostream &OS) { 137 // Build a 'first character of function name' -> intrinsic # mapping. 138 std::map<char, std::vector<unsigned> > IntMapping; 139 for (unsigned i = 0, e = Ints.size(); i != e; ++i) 140 IntMapping[Ints[i].Name[5]].push_back(i); 141 142 OS << "// Function name -> enum value recognizer code.\n"; 143 OS << "#ifdef GET_FUNCTION_RECOGNIZER\n"; 144 OS << " StringRef NameR(Name+6, Len-6); // Skip over 'llvm.'\n"; 145 OS << " switch (Name[5]) { // Dispatch on first letter.\n"; 146 OS << " default: break;\n"; 147 // Emit the intrinsic matching stuff by first letter. 148 for (std::map<char, std::vector<unsigned> >::iterator I = IntMapping.begin(), 149 E = IntMapping.end(); I != E; ++I) { 150 OS << " case '" << I->first << "':\n"; 151 std::vector<unsigned> &IntList = I->second; 152 153 // Sort in reverse order of intrinsic name so "abc.def" appears after 154 // "abd.def.ghi" in the overridden name matcher 155 std::sort(IntList.begin(), IntList.end(), [&](unsigned i, unsigned j) { 156 return Ints[i].Name > Ints[j].Name; 157 }); 158 159 // Emit all the overloaded intrinsics first, build a table of the 160 // non-overloaded ones. 161 std::vector<StringMatcher::StringPair> MatchTable; 162 163 for (unsigned i = 0, e = IntList.size(); i != e; ++i) { 164 unsigned IntNo = IntList[i]; 165 std::string Result = "return " + TargetPrefix + "Intrinsic::" + 166 Ints[IntNo].EnumName + ";"; 167 168 if (!Ints[IntNo].isOverloaded) { 169 MatchTable.push_back(std::make_pair(Ints[IntNo].Name.substr(6),Result)); 170 continue; 171 } 172 173 // For overloaded intrinsics, only the prefix needs to match 174 std::string TheStr = Ints[IntNo].Name.substr(6); 175 TheStr += '.'; // Require "bswap." instead of bswap. 176 OS << " if (NameR.startswith(\"" << TheStr << "\")) " 177 << Result << '\n'; 178 } 179 180 // Emit the matcher logic for the fixed length strings. 181 StringMatcher("NameR", MatchTable, OS).Emit(1); 182 OS << " break; // end of '" << I->first << "' case.\n"; 183 } 184 185 OS << " }\n"; 186 OS << "#endif\n\n"; 187 } 188 189 void IntrinsicEmitter:: 190 EmitIntrinsicToNameTable(const std::vector<CodeGenIntrinsic> &Ints, 191 raw_ostream &OS) { 192 OS << "// Intrinsic ID to name table\n"; 193 OS << "#ifdef GET_INTRINSIC_NAME_TABLE\n"; 194 OS << " // Note that entry #0 is the invalid intrinsic!\n"; 195 for (unsigned i = 0, e = Ints.size(); i != e; ++i) 196 OS << " \"" << Ints[i].Name << "\",\n"; 197 OS << "#endif\n\n"; 198 } 199 200 void IntrinsicEmitter:: 201 EmitIntrinsicToOverloadTable(const std::vector<CodeGenIntrinsic> &Ints, 202 raw_ostream &OS) { 203 OS << "// Intrinsic ID to overload bitset\n"; 204 OS << "#ifdef GET_INTRINSIC_OVERLOAD_TABLE\n"; 205 OS << "static const uint8_t OTable[] = {\n"; 206 OS << " 0"; 207 for (unsigned i = 0, e = Ints.size(); i != e; ++i) { 208 // Add one to the index so we emit a null bit for the invalid #0 intrinsic. 209 if ((i+1)%8 == 0) 210 OS << ",\n 0"; 211 if (Ints[i].isOverloaded) 212 OS << " | (1<<" << (i+1)%8 << ')'; 213 } 214 OS << "\n};\n\n"; 215 // OTable contains a true bit at the position if the intrinsic is overloaded. 216 OS << "return (OTable[id/8] & (1 << (id%8))) != 0;\n"; 217 OS << "#endif\n\n"; 218 } 219 220 221 // NOTE: This must be kept in synch with the copy in lib/VMCore/Function.cpp! 222 enum IIT_Info { 223 // Common values should be encoded with 0-15. 224 IIT_Done = 0, 225 IIT_I1 = 1, 226 IIT_I8 = 2, 227 IIT_I16 = 3, 228 IIT_I32 = 4, 229 IIT_I64 = 5, 230 IIT_F16 = 6, 231 IIT_F32 = 7, 232 IIT_F64 = 8, 233 IIT_V2 = 9, 234 IIT_V4 = 10, 235 IIT_V8 = 11, 236 IIT_V16 = 12, 237 IIT_V32 = 13, 238 IIT_PTR = 14, 239 IIT_ARG = 15, 240 241 // Values from 16+ are only encodable with the inefficient encoding. 242 IIT_V64 = 16, 243 IIT_MMX = 17, 244 IIT_TOKEN = 18, 245 IIT_METADATA = 19, 246 IIT_EMPTYSTRUCT = 20, 247 IIT_STRUCT2 = 21, 248 IIT_STRUCT3 = 22, 249 IIT_STRUCT4 = 23, 250 IIT_STRUCT5 = 24, 251 IIT_EXTEND_ARG = 25, 252 IIT_TRUNC_ARG = 26, 253 IIT_ANYPTR = 27, 254 IIT_V1 = 28, 255 IIT_VARARG = 29, 256 IIT_HALF_VEC_ARG = 30, 257 IIT_SAME_VEC_WIDTH_ARG = 31, 258 IIT_PTR_TO_ARG = 32, 259 IIT_VEC_OF_PTRS_TO_ELT = 33, 260 IIT_I128 = 34, 261 IIT_V512 = 35, 262 IIT_V1024 = 36 263 }; 264 265 266 static void EncodeFixedValueType(MVT::SimpleValueType VT, 267 std::vector<unsigned char> &Sig) { 268 if (MVT(VT).isInteger()) { 269 unsigned BitWidth = MVT(VT).getSizeInBits(); 270 switch (BitWidth) { 271 default: PrintFatalError("unhandled integer type width in intrinsic!"); 272 case 1: return Sig.push_back(IIT_I1); 273 case 8: return Sig.push_back(IIT_I8); 274 case 16: return Sig.push_back(IIT_I16); 275 case 32: return Sig.push_back(IIT_I32); 276 case 64: return Sig.push_back(IIT_I64); 277 case 128: return Sig.push_back(IIT_I128); 278 } 279 } 280 281 switch (VT) { 282 default: PrintFatalError("unhandled MVT in intrinsic!"); 283 case MVT::f16: return Sig.push_back(IIT_F16); 284 case MVT::f32: return Sig.push_back(IIT_F32); 285 case MVT::f64: return Sig.push_back(IIT_F64); 286 case MVT::token: return Sig.push_back(IIT_TOKEN); 287 case MVT::Metadata: return Sig.push_back(IIT_METADATA); 288 case MVT::x86mmx: return Sig.push_back(IIT_MMX); 289 // MVT::OtherVT is used to mean the empty struct type here. 290 case MVT::Other: return Sig.push_back(IIT_EMPTYSTRUCT); 291 // MVT::isVoid is used to represent varargs here. 292 case MVT::isVoid: return Sig.push_back(IIT_VARARG); 293 } 294 } 295 296 #if defined(_MSC_VER) && !defined(__clang__) 297 #pragma optimize("",off) // MSVC 2010 optimizer can't deal with this function. 298 #endif 299 300 static void EncodeFixedType(Record *R, std::vector<unsigned char> &ArgCodes, 301 std::vector<unsigned char> &Sig) { 302 303 if (R->isSubClassOf("LLVMMatchType")) { 304 unsigned Number = R->getValueAsInt("Number"); 305 assert(Number < ArgCodes.size() && "Invalid matching number!"); 306 if (R->isSubClassOf("LLVMExtendedType")) 307 Sig.push_back(IIT_EXTEND_ARG); 308 else if (R->isSubClassOf("LLVMTruncatedType")) 309 Sig.push_back(IIT_TRUNC_ARG); 310 else if (R->isSubClassOf("LLVMHalfElementsVectorType")) 311 Sig.push_back(IIT_HALF_VEC_ARG); 312 else if (R->isSubClassOf("LLVMVectorSameWidth")) { 313 Sig.push_back(IIT_SAME_VEC_WIDTH_ARG); 314 Sig.push_back((Number << 3) | ArgCodes[Number]); 315 MVT::SimpleValueType VT = getValueType(R->getValueAsDef("ElTy")); 316 EncodeFixedValueType(VT, Sig); 317 return; 318 } 319 else if (R->isSubClassOf("LLVMPointerTo")) 320 Sig.push_back(IIT_PTR_TO_ARG); 321 else if (R->isSubClassOf("LLVMVectorOfPointersToElt")) 322 Sig.push_back(IIT_VEC_OF_PTRS_TO_ELT); 323 else 324 Sig.push_back(IIT_ARG); 325 return Sig.push_back((Number << 3) | ArgCodes[Number]); 326 } 327 328 MVT::SimpleValueType VT = getValueType(R->getValueAsDef("VT")); 329 330 unsigned Tmp = 0; 331 switch (VT) { 332 default: break; 333 case MVT::iPTRAny: ++Tmp; // FALL THROUGH. 334 case MVT::vAny: ++Tmp; // FALL THROUGH. 335 case MVT::fAny: ++Tmp; // FALL THROUGH. 336 case MVT::iAny: ++Tmp; // FALL THROUGH. 337 case MVT::Any: { 338 // If this is an "any" valuetype, then the type is the type of the next 339 // type in the list specified to getIntrinsic(). 340 Sig.push_back(IIT_ARG); 341 342 // Figure out what arg # this is consuming, and remember what kind it was. 343 unsigned ArgNo = ArgCodes.size(); 344 ArgCodes.push_back(Tmp); 345 346 // Encode what sort of argument it must be in the low 3 bits of the ArgNo. 347 return Sig.push_back((ArgNo << 3) | Tmp); 348 } 349 350 case MVT::iPTR: { 351 unsigned AddrSpace = 0; 352 if (R->isSubClassOf("LLVMQualPointerType")) { 353 AddrSpace = R->getValueAsInt("AddrSpace"); 354 assert(AddrSpace < 256 && "Address space exceeds 255"); 355 } 356 if (AddrSpace) { 357 Sig.push_back(IIT_ANYPTR); 358 Sig.push_back(AddrSpace); 359 } else { 360 Sig.push_back(IIT_PTR); 361 } 362 return EncodeFixedType(R->getValueAsDef("ElTy"), ArgCodes, Sig); 363 } 364 } 365 366 if (MVT(VT).isVector()) { 367 MVT VVT = VT; 368 switch (VVT.getVectorNumElements()) { 369 default: PrintFatalError("unhandled vector type width in intrinsic!"); 370 case 1: Sig.push_back(IIT_V1); break; 371 case 2: Sig.push_back(IIT_V2); break; 372 case 4: Sig.push_back(IIT_V4); break; 373 case 8: Sig.push_back(IIT_V8); break; 374 case 16: Sig.push_back(IIT_V16); break; 375 case 32: Sig.push_back(IIT_V32); break; 376 case 64: Sig.push_back(IIT_V64); break; 377 case 512: Sig.push_back(IIT_V512); break; 378 case 1024: Sig.push_back(IIT_V1024); break; 379 } 380 381 return EncodeFixedValueType(VVT.getVectorElementType().SimpleTy, Sig); 382 } 383 384 EncodeFixedValueType(VT, Sig); 385 } 386 387 #if defined(_MSC_VER) && !defined(__clang__) 388 #pragma optimize("",on) 389 #endif 390 391 /// ComputeFixedEncoding - If we can encode the type signature for this 392 /// intrinsic into 32 bits, return it. If not, return ~0U. 393 static void ComputeFixedEncoding(const CodeGenIntrinsic &Int, 394 std::vector<unsigned char> &TypeSig) { 395 std::vector<unsigned char> ArgCodes; 396 397 if (Int.IS.RetVTs.empty()) 398 TypeSig.push_back(IIT_Done); 399 else if (Int.IS.RetVTs.size() == 1 && 400 Int.IS.RetVTs[0] == MVT::isVoid) 401 TypeSig.push_back(IIT_Done); 402 else { 403 switch (Int.IS.RetVTs.size()) { 404 case 1: break; 405 case 2: TypeSig.push_back(IIT_STRUCT2); break; 406 case 3: TypeSig.push_back(IIT_STRUCT3); break; 407 case 4: TypeSig.push_back(IIT_STRUCT4); break; 408 case 5: TypeSig.push_back(IIT_STRUCT5); break; 409 default: llvm_unreachable("Unhandled case in struct"); 410 } 411 412 for (unsigned i = 0, e = Int.IS.RetVTs.size(); i != e; ++i) 413 EncodeFixedType(Int.IS.RetTypeDefs[i], ArgCodes, TypeSig); 414 } 415 416 for (unsigned i = 0, e = Int.IS.ParamTypeDefs.size(); i != e; ++i) 417 EncodeFixedType(Int.IS.ParamTypeDefs[i], ArgCodes, TypeSig); 418 } 419 420 static void printIITEntry(raw_ostream &OS, unsigned char X) { 421 OS << (unsigned)X; 422 } 423 424 void IntrinsicEmitter::EmitGenerator(const std::vector<CodeGenIntrinsic> &Ints, 425 raw_ostream &OS) { 426 // If we can compute a 32-bit fixed encoding for this intrinsic, do so and 427 // capture it in this vector, otherwise store a ~0U. 428 std::vector<unsigned> FixedEncodings; 429 430 SequenceToOffsetTable<std::vector<unsigned char> > LongEncodingTable; 431 432 std::vector<unsigned char> TypeSig; 433 434 // Compute the unique argument type info. 435 for (unsigned i = 0, e = Ints.size(); i != e; ++i) { 436 // Get the signature for the intrinsic. 437 TypeSig.clear(); 438 ComputeFixedEncoding(Ints[i], TypeSig); 439 440 // Check to see if we can encode it into a 32-bit word. We can only encode 441 // 8 nibbles into a 32-bit word. 442 if (TypeSig.size() <= 8) { 443 bool Failed = false; 444 unsigned Result = 0; 445 for (unsigned i = 0, e = TypeSig.size(); i != e; ++i) { 446 // If we had an unencodable argument, bail out. 447 if (TypeSig[i] > 15) { 448 Failed = true; 449 break; 450 } 451 Result = (Result << 4) | TypeSig[e-i-1]; 452 } 453 454 // If this could be encoded into a 31-bit word, return it. 455 if (!Failed && (Result >> 31) == 0) { 456 FixedEncodings.push_back(Result); 457 continue; 458 } 459 } 460 461 // Otherwise, we're going to unique the sequence into the 462 // LongEncodingTable, and use its offset in the 32-bit table instead. 463 LongEncodingTable.add(TypeSig); 464 465 // This is a placehold that we'll replace after the table is laid out. 466 FixedEncodings.push_back(~0U); 467 } 468 469 LongEncodingTable.layout(); 470 471 OS << "// Global intrinsic function declaration type table.\n"; 472 OS << "#ifdef GET_INTRINSIC_GENERATOR_GLOBAL\n"; 473 474 OS << "static const unsigned IIT_Table[] = {\n "; 475 476 for (unsigned i = 0, e = FixedEncodings.size(); i != e; ++i) { 477 if ((i & 7) == 7) 478 OS << "\n "; 479 480 // If the entry fit in the table, just emit it. 481 if (FixedEncodings[i] != ~0U) { 482 OS << "0x" << utohexstr(FixedEncodings[i]) << ", "; 483 continue; 484 } 485 486 TypeSig.clear(); 487 ComputeFixedEncoding(Ints[i], TypeSig); 488 489 490 // Otherwise, emit the offset into the long encoding table. We emit it this 491 // way so that it is easier to read the offset in the .def file. 492 OS << "(1U<<31) | " << LongEncodingTable.get(TypeSig) << ", "; 493 } 494 495 OS << "0\n};\n\n"; 496 497 // Emit the shared table of register lists. 498 OS << "static const unsigned char IIT_LongEncodingTable[] = {\n"; 499 if (!LongEncodingTable.empty()) 500 LongEncodingTable.emit(OS, printIITEntry); 501 OS << " 255\n};\n\n"; 502 503 OS << "#endif\n\n"; // End of GET_INTRINSIC_GENERATOR_GLOBAL 504 } 505 506 namespace { 507 struct AttributeComparator { 508 bool operator()(const CodeGenIntrinsic *L, const CodeGenIntrinsic *R) const { 509 // Sort throwing intrinsics after non-throwing intrinsics. 510 if (L->canThrow != R->canThrow) 511 return R->canThrow; 512 513 if (L->isNoDuplicate != R->isNoDuplicate) 514 return R->isNoDuplicate; 515 516 if (L->isNoReturn != R->isNoReturn) 517 return R->isNoReturn; 518 519 if (L->isConvergent != R->isConvergent) 520 return R->isConvergent; 521 522 // Try to order by readonly/readnone attribute. 523 CodeGenIntrinsic::ModRefKind LK = L->ModRef; 524 CodeGenIntrinsic::ModRefKind RK = R->ModRef; 525 if (LK != RK) return (LK > RK); 526 527 // Order by argument attributes. 528 // This is reliable because each side is already sorted internally. 529 return (L->ArgumentAttributes < R->ArgumentAttributes); 530 } 531 }; 532 } // End anonymous namespace 533 534 /// EmitAttributes - This emits the Intrinsic::getAttributes method. 535 void IntrinsicEmitter:: 536 EmitAttributes(const std::vector<CodeGenIntrinsic> &Ints, raw_ostream &OS) { 537 OS << "// Add parameter attributes that are not common to all intrinsics.\n"; 538 OS << "#ifdef GET_INTRINSIC_ATTRIBUTES\n"; 539 if (TargetOnly) 540 OS << "static AttributeSet getAttributes(LLVMContext &C, " << TargetPrefix 541 << "Intrinsic::ID id) {\n"; 542 else 543 OS << "AttributeSet Intrinsic::getAttributes(LLVMContext &C, ID id) {\n"; 544 545 // Compute the maximum number of attribute arguments and the map 546 typedef std::map<const CodeGenIntrinsic*, unsigned, 547 AttributeComparator> UniqAttrMapTy; 548 UniqAttrMapTy UniqAttributes; 549 unsigned maxArgAttrs = 0; 550 unsigned AttrNum = 0; 551 for (unsigned i = 0, e = Ints.size(); i != e; ++i) { 552 const CodeGenIntrinsic &intrinsic = Ints[i]; 553 maxArgAttrs = 554 std::max(maxArgAttrs, unsigned(intrinsic.ArgumentAttributes.size())); 555 unsigned &N = UniqAttributes[&intrinsic]; 556 if (N) continue; 557 assert(AttrNum < 256 && "Too many unique attributes for table!"); 558 N = ++AttrNum; 559 } 560 561 // Emit an array of AttributeSet. Most intrinsics will have at least one 562 // entry, for the function itself (index ~1), which is usually nounwind. 563 OS << " static const uint8_t IntrinsicsToAttributesMap[] = {\n"; 564 565 for (unsigned i = 0, e = Ints.size(); i != e; ++i) { 566 const CodeGenIntrinsic &intrinsic = Ints[i]; 567 568 OS << " " << UniqAttributes[&intrinsic] << ", // " 569 << intrinsic.Name << "\n"; 570 } 571 OS << " };\n\n"; 572 573 OS << " AttributeSet AS[" << maxArgAttrs+1 << "];\n"; 574 OS << " unsigned NumAttrs = 0;\n"; 575 OS << " if (id != 0) {\n"; 576 OS << " switch(IntrinsicsToAttributesMap[id - "; 577 if (TargetOnly) 578 OS << "Intrinsic::num_intrinsics"; 579 else 580 OS << "1"; 581 OS << "]) {\n"; 582 OS << " default: llvm_unreachable(\"Invalid attribute number\");\n"; 583 for (UniqAttrMapTy::const_iterator I = UniqAttributes.begin(), 584 E = UniqAttributes.end(); I != E; ++I) { 585 OS << " case " << I->second << ": {\n"; 586 587 const CodeGenIntrinsic &intrinsic = *(I->first); 588 589 // Keep track of the number of attributes we're writing out. 590 unsigned numAttrs = 0; 591 592 // The argument attributes are alreadys sorted by argument index. 593 unsigned ai = 0, ae = intrinsic.ArgumentAttributes.size(); 594 if (ae) { 595 while (ai != ae) { 596 unsigned argNo = intrinsic.ArgumentAttributes[ai].first; 597 598 OS << " const Attribute::AttrKind AttrParam" << argNo + 1 <<"[]= {"; 599 bool addComma = false; 600 601 do { 602 switch (intrinsic.ArgumentAttributes[ai].second) { 603 case CodeGenIntrinsic::NoCapture: 604 if (addComma) 605 OS << ","; 606 OS << "Attribute::NoCapture"; 607 addComma = true; 608 break; 609 case CodeGenIntrinsic::ReadOnly: 610 if (addComma) 611 OS << ","; 612 OS << "Attribute::ReadOnly"; 613 addComma = true; 614 break; 615 case CodeGenIntrinsic::ReadNone: 616 if (addComma) 617 OS << ","; 618 OS << "Attribute::ReadNone"; 619 addComma = true; 620 break; 621 } 622 623 ++ai; 624 } while (ai != ae && intrinsic.ArgumentAttributes[ai].first == argNo); 625 OS << "};\n"; 626 OS << " AS[" << numAttrs++ << "] = AttributeSet::get(C, " 627 << argNo+1 << ", AttrParam" << argNo +1 << ");\n"; 628 } 629 } 630 631 if (!intrinsic.canThrow || 632 intrinsic.ModRef != CodeGenIntrinsic::ReadWriteMem || 633 intrinsic.isNoReturn || intrinsic.isNoDuplicate || 634 intrinsic.isConvergent) { 635 OS << " const Attribute::AttrKind Atts[] = {"; 636 bool addComma = false; 637 if (!intrinsic.canThrow) { 638 OS << "Attribute::NoUnwind"; 639 addComma = true; 640 } 641 if (intrinsic.isNoReturn) { 642 if (addComma) 643 OS << ","; 644 OS << "Attribute::NoReturn"; 645 addComma = true; 646 } 647 if (intrinsic.isNoDuplicate) { 648 if (addComma) 649 OS << ","; 650 OS << "Attribute::NoDuplicate"; 651 addComma = true; 652 } 653 if (intrinsic.isConvergent) { 654 if (addComma) 655 OS << ","; 656 OS << "Attribute::Convergent"; 657 addComma = true; 658 } 659 660 switch (intrinsic.ModRef) { 661 case CodeGenIntrinsic::NoMem: 662 if (addComma) 663 OS << ","; 664 OS << "Attribute::ReadNone"; 665 break; 666 case CodeGenIntrinsic::ReadArgMem: 667 if (addComma) 668 OS << ","; 669 OS << "Attribute::ReadOnly,"; 670 OS << "Attribute::ArgMemOnly"; 671 break; 672 case CodeGenIntrinsic::ReadMem: 673 if (addComma) 674 OS << ","; 675 OS << "Attribute::ReadOnly"; 676 break; 677 case CodeGenIntrinsic::ReadWriteArgMem: 678 if (addComma) 679 OS << ","; 680 OS << "Attribute::ArgMemOnly"; 681 break; 682 case CodeGenIntrinsic::ReadWriteMem: 683 break; 684 } 685 OS << "};\n"; 686 OS << " AS[" << numAttrs++ << "] = AttributeSet::get(C, " 687 << "AttributeSet::FunctionIndex, Atts);\n"; 688 } 689 690 if (numAttrs) { 691 OS << " NumAttrs = " << numAttrs << ";\n"; 692 OS << " break;\n"; 693 OS << " }\n"; 694 } else { 695 OS << " return AttributeSet();\n"; 696 OS << " }\n"; 697 } 698 } 699 700 OS << " }\n"; 701 OS << " }\n"; 702 OS << " return AttributeSet::get(C, makeArrayRef(AS, NumAttrs));\n"; 703 OS << "}\n"; 704 OS << "#endif // GET_INTRINSIC_ATTRIBUTES\n\n"; 705 } 706 707 /// EmitTargetBuiltins - All of the builtins in the specified map are for the 708 /// same target, and we already checked it. 709 static void EmitTargetBuiltins(const std::map<std::string, std::string> &BIM, 710 const std::string &TargetPrefix, 711 raw_ostream &OS) { 712 713 std::vector<StringMatcher::StringPair> Results; 714 715 for (std::map<std::string, std::string>::const_iterator I = BIM.begin(), 716 E = BIM.end(); I != E; ++I) { 717 std::string ResultCode = 718 "return " + TargetPrefix + "Intrinsic::" + I->second + ";"; 719 Results.emplace_back(I->first, ResultCode); 720 } 721 722 StringMatcher("BuiltinName", Results, OS).Emit(); 723 } 724 725 726 void IntrinsicEmitter:: 727 EmitIntrinsicToGCCBuiltinMap(const std::vector<CodeGenIntrinsic> &Ints, 728 raw_ostream &OS) { 729 typedef std::map<std::string, std::map<std::string, std::string> > BIMTy; 730 BIMTy BuiltinMap; 731 for (unsigned i = 0, e = Ints.size(); i != e; ++i) { 732 if (!Ints[i].GCCBuiltinName.empty()) { 733 // Get the map for this target prefix. 734 std::map<std::string, std::string> &BIM =BuiltinMap[Ints[i].TargetPrefix]; 735 736 if (!BIM.insert(std::make_pair(Ints[i].GCCBuiltinName, 737 Ints[i].EnumName)).second) 738 PrintFatalError("Intrinsic '" + Ints[i].TheDef->getName() + 739 "': duplicate GCC builtin name!"); 740 } 741 } 742 743 OS << "// Get the LLVM intrinsic that corresponds to a GCC builtin.\n"; 744 OS << "// This is used by the C front-end. The GCC builtin name is passed\n"; 745 OS << "// in as BuiltinName, and a target prefix (e.g. 'ppc') is passed\n"; 746 OS << "// in as TargetPrefix. The result is assigned to 'IntrinsicID'.\n"; 747 OS << "#ifdef GET_LLVM_INTRINSIC_FOR_GCC_BUILTIN\n"; 748 749 if (TargetOnly) { 750 OS << "static " << TargetPrefix << "Intrinsic::ID " 751 << "getIntrinsicForGCCBuiltin(const char " 752 << "*TargetPrefixStr, const char *BuiltinNameStr) {\n"; 753 } else { 754 OS << "Intrinsic::ID Intrinsic::getIntrinsicForGCCBuiltin(const char " 755 << "*TargetPrefixStr, const char *BuiltinNameStr) {\n"; 756 } 757 758 OS << " StringRef BuiltinName(BuiltinNameStr);\n"; 759 OS << " StringRef TargetPrefix(TargetPrefixStr);\n\n"; 760 761 // Note: this could emit significantly better code if we cared. 762 for (BIMTy::iterator I = BuiltinMap.begin(), E = BuiltinMap.end();I != E;++I){ 763 OS << " "; 764 if (!I->first.empty()) 765 OS << "if (TargetPrefix == \"" << I->first << "\") "; 766 else 767 OS << "/* Target Independent Builtins */ "; 768 OS << "{\n"; 769 770 // Emit the comparisons for this target prefix. 771 EmitTargetBuiltins(I->second, TargetPrefix, OS); 772 OS << " }\n"; 773 } 774 OS << " return "; 775 if (!TargetPrefix.empty()) 776 OS << "(" << TargetPrefix << "Intrinsic::ID)"; 777 OS << "Intrinsic::not_intrinsic;\n"; 778 OS << "}\n"; 779 OS << "#endif\n\n"; 780 } 781 782 void IntrinsicEmitter:: 783 EmitIntrinsicToMSBuiltinMap(const std::vector<CodeGenIntrinsic> &Ints, 784 raw_ostream &OS) { 785 std::map<std::string, std::map<std::string, std::string>> TargetBuiltins; 786 787 for (const auto &Intrinsic : Ints) { 788 if (Intrinsic.MSBuiltinName.empty()) 789 continue; 790 791 auto &Builtins = TargetBuiltins[Intrinsic.TargetPrefix]; 792 if (!Builtins.insert(std::make_pair(Intrinsic.MSBuiltinName, 793 Intrinsic.EnumName)).second) 794 PrintFatalError("Intrinsic '" + Intrinsic.TheDef->getName() + "': " 795 "duplicate MS builtin name!"); 796 } 797 798 OS << "// Get the LLVM intrinsic that corresponds to a MS builtin.\n" 799 "// This is used by the C front-end. The MS builtin name is passed\n" 800 "// in as a BuiltinName, and a target prefix (e.g. 'arm') is passed\n" 801 "// in as a TargetPrefix. The result is assigned to 'IntrinsicID'.\n" 802 "#ifdef GET_LLVM_INTRINSIC_FOR_MS_BUILTIN\n"; 803 804 OS << (TargetOnly ? "static " + TargetPrefix : "") << "Intrinsic::ID " 805 << (TargetOnly ? "" : "Intrinsic::") 806 << "getIntrinsicForMSBuiltin(const char *TP, const char *BN) {\n"; 807 OS << " StringRef BuiltinName(BN);\n" 808 " StringRef TargetPrefix(TP);\n" 809 "\n"; 810 811 for (const auto &Builtins : TargetBuiltins) { 812 OS << " "; 813 if (Builtins.first.empty()) 814 OS << "/* Target Independent Builtins */ "; 815 else 816 OS << "if (TargetPrefix == \"" << Builtins.first << "\") "; 817 OS << "{\n"; 818 EmitTargetBuiltins(Builtins.second, TargetPrefix, OS); 819 OS << "}"; 820 } 821 822 OS << " return "; 823 if (!TargetPrefix.empty()) 824 OS << "(" << TargetPrefix << "Intrinsic::ID)"; 825 OS << "Intrinsic::not_intrinsic;\n"; 826 OS << "}\n"; 827 828 OS << "#endif\n\n"; 829 } 830 831 void llvm::EmitIntrinsics(RecordKeeper &RK, raw_ostream &OS, bool TargetOnly) { 832 IntrinsicEmitter(RK, TargetOnly).run(OS); 833 } 834
