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