LLVM  8.0.0svn
Function.cpp
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1 //===- Function.cpp - Implement the Global object classes -----------------===//
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 file implements the Function class for the IR library.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #include "llvm/IR/Function.h"
16 #include "llvm/ADT/ArrayRef.h"
17 #include "llvm/ADT/DenseSet.h"
18 #include "llvm/ADT/None.h"
19 #include "llvm/ADT/STLExtras.h"
20 #include "llvm/ADT/SmallString.h"
21 #include "llvm/ADT/SmallVector.h"
22 #include "llvm/ADT/StringExtras.h"
23 #include "llvm/ADT/StringRef.h"
24 #include "llvm/IR/Argument.h"
25 #include "llvm/IR/Attributes.h"
26 #include "llvm/IR/BasicBlock.h"
27 #include "llvm/IR/CallSite.h"
28 #include "llvm/IR/Constant.h"
29 #include "llvm/IR/Constants.h"
30 #include "llvm/IR/DerivedTypes.h"
31 #include "llvm/IR/GlobalValue.h"
32 #include "llvm/IR/InstIterator.h"
33 #include "llvm/IR/Instruction.h"
34 #include "llvm/IR/Instructions.h"
35 #include "llvm/IR/IntrinsicInst.h"
36 #include "llvm/IR/Intrinsics.h"
37 #include "llvm/IR/LLVMContext.h"
38 #include "llvm/IR/MDBuilder.h"
39 #include "llvm/IR/Metadata.h"
40 #include "llvm/IR/Module.h"
42 #include "llvm/IR/Type.h"
43 #include "llvm/IR/Use.h"
44 #include "llvm/IR/User.h"
45 #include "llvm/IR/Value.h"
47 #include "llvm/Support/Casting.h"
48 #include "llvm/Support/Compiler.h"
50 #include <algorithm>
51 #include <cassert>
52 #include <cstddef>
53 #include <cstdint>
54 #include <cstring>
55 #include <string>
56 
57 using namespace llvm;
59 
60 // Explicit instantiations of SymbolTableListTraits since some of the methods
61 // are not in the public header file...
63 
64 //===----------------------------------------------------------------------===//
65 // Argument Implementation
66 //===----------------------------------------------------------------------===//
67 
68 Argument::Argument(Type *Ty, const Twine &Name, Function *Par, unsigned ArgNo)
69  : Value(Ty, Value::ArgumentVal), Parent(Par), ArgNo(ArgNo) {
70  setName(Name);
71 }
72 
73 void Argument::setParent(Function *parent) {
74  Parent = parent;
75 }
76 
78  if (!getType()->isPointerTy()) return false;
79  if (getParent()->hasParamAttribute(getArgNo(), Attribute::NonNull))
80  return true;
81  else if (getDereferenceableBytes() > 0 &&
83  getType()->getPointerAddressSpace()))
84  return true;
85  return false;
86 }
87 
88 bool Argument::hasByValAttr() const {
89  if (!getType()->isPointerTy()) return false;
90  return hasAttribute(Attribute::ByVal);
91 }
92 
94  return getParent()->hasParamAttribute(getArgNo(), Attribute::SwiftSelf);
95 }
96 
98  return getParent()->hasParamAttribute(getArgNo(), Attribute::SwiftError);
99 }
100 
102  if (!getType()->isPointerTy()) return false;
103  return hasAttribute(Attribute::InAlloca);
104 }
105 
107  if (!getType()->isPointerTy()) return false;
109  return Attrs.hasParamAttribute(getArgNo(), Attribute::ByVal) ||
110  Attrs.hasParamAttribute(getArgNo(), Attribute::InAlloca);
111 }
112 
113 unsigned Argument::getParamAlignment() const {
114  assert(getType()->isPointerTy() && "Only pointers have alignments");
115  return getParent()->getParamAlignment(getArgNo());
116 }
117 
119  assert(getType()->isPointerTy() &&
120  "Only pointers have dereferenceable bytes");
122 }
123 
125  assert(getType()->isPointerTy() &&
126  "Only pointers have dereferenceable bytes");
128 }
129 
130 bool Argument::hasNestAttr() const {
131  if (!getType()->isPointerTy()) return false;
132  return hasAttribute(Attribute::Nest);
133 }
134 
136  if (!getType()->isPointerTy()) return false;
138 }
139 
141  if (!getType()->isPointerTy()) return false;
142  return hasAttribute(Attribute::NoCapture);
143 }
144 
146  if (!getType()->isPointerTy()) return false;
147  return hasAttribute(Attribute::StructRet);
148 }
149 
151  return hasAttribute(Attribute::Returned);
152 }
153 
154 bool Argument::hasZExtAttr() const {
155  return hasAttribute(Attribute::ZExt);
156 }
157 
158 bool Argument::hasSExtAttr() const {
159  return hasAttribute(Attribute::SExt);
160 }
161 
164  return Attrs.hasParamAttribute(getArgNo(), Attribute::ReadOnly) ||
165  Attrs.hasParamAttribute(getArgNo(), Attribute::ReadNone);
166 }
167 
170  AL = AL.addParamAttributes(Parent->getContext(), getArgNo(), B);
171  getParent()->setAttributes(AL);
172 }
173 
175  getParent()->addParamAttr(getArgNo(), Kind);
176 }
177 
179  getParent()->addParamAttr(getArgNo(), Attr);
180 }
181 
183  getParent()->removeParamAttr(getArgNo(), Kind);
184 }
185 
187  return getParent()->hasParamAttribute(getArgNo(), Kind);
188 }
189 
190 //===----------------------------------------------------------------------===//
191 // Helper Methods in Function
192 //===----------------------------------------------------------------------===//
193 
195  return getType()->getContext();
196 }
197 
199  unsigned NumInstrs = 0;
200  for (BasicBlock &BB : BasicBlocks)
201  NumInstrs += std::distance(BB.instructionsWithoutDebug().begin(),
202  BB.instructionsWithoutDebug().end());
203  return NumInstrs;
204 }
205 
207  getParent()->getFunctionList().remove(getIterator());
208 }
209 
211  getParent()->getFunctionList().erase(getIterator());
212 }
213 
214 //===----------------------------------------------------------------------===//
215 // Function Implementation
216 //===----------------------------------------------------------------------===//
217 
218 Function::Function(FunctionType *Ty, LinkageTypes Linkage, const Twine &name,
219  Module *ParentModule)
220  : GlobalObject(Ty, Value::FunctionVal,
221  OperandTraits<Function>::op_begin(this), 0, Linkage, name),
222  NumArgs(Ty->getNumParams()) {
223  assert(FunctionType::isValidReturnType(getReturnType()) &&
224  "invalid return type");
225  setGlobalObjectSubClassData(0);
226 
227  // We only need a symbol table for a function if the context keeps value names
228  if (!getContext().shouldDiscardValueNames())
229  SymTab = make_unique<ValueSymbolTable>();
230 
231  // If the function has arguments, mark them as lazily built.
232  if (Ty->getNumParams())
233  setValueSubclassData(1); // Set the "has lazy arguments" bit.
234 
235  if (ParentModule)
236  ParentModule->getFunctionList().push_back(this);
237 
238  HasLLVMReservedName = getName().startswith("llvm.");
239  // Ensure intrinsics have the right parameter attributes.
240  // Note, the IntID field will have been set in Value::setName if this function
241  // name is a valid intrinsic ID.
242  if (IntID)
243  setAttributes(Intrinsic::getAttributes(getContext(), IntID));
244 }
245 
247  dropAllReferences(); // After this it is safe to delete instructions.
248 
249  // Delete all of the method arguments and unlink from symbol table...
250  if (Arguments)
251  clearArguments();
252 
253  // Remove the function from the on-the-side GC table.
254  clearGC();
255 }
256 
257 void Function::BuildLazyArguments() const {
258  // Create the arguments vector, all arguments start out unnamed.
259  auto *FT = getFunctionType();
260  if (NumArgs > 0) {
261  Arguments = std::allocator<Argument>().allocate(NumArgs);
262  for (unsigned i = 0, e = NumArgs; i != e; ++i) {
263  Type *ArgTy = FT->getParamType(i);
264  assert(!ArgTy->isVoidTy() && "Cannot have void typed arguments!");
265  new (Arguments + i) Argument(ArgTy, "", const_cast<Function *>(this), i);
266  }
267  }
268 
269  // Clear the lazy arguments bit.
270  unsigned SDC = getSubclassDataFromValue();
271  const_cast<Function*>(this)->setValueSubclassData(SDC &= ~(1<<0));
272  assert(!hasLazyArguments());
273 }
274 
276  return MutableArrayRef<Argument>(Args, Count);
277 }
278 
279 void Function::clearArguments() {
280  for (Argument &A : makeArgArray(Arguments, NumArgs)) {
281  A.setName("");
282  A.~Argument();
283  }
284  std::allocator<Argument>().deallocate(Arguments, NumArgs);
285  Arguments = nullptr;
286 }
287 
289  assert(isDeclaration() && "Expected no references to current arguments");
290 
291  // Drop the current arguments, if any, and set the lazy argument bit.
292  if (!hasLazyArguments()) {
294  [](const Argument &A) { return A.use_empty(); }) &&
295  "Expected arguments to be unused in declaration");
296  clearArguments();
298  }
299 
300  // Nothing to steal if Src has lazy arguments.
301  if (Src.hasLazyArguments())
302  return;
303 
304  // Steal arguments from Src, and fix the lazy argument bits.
305  assert(arg_size() == Src.arg_size());
306  Arguments = Src.Arguments;
307  Src.Arguments = nullptr;
308  for (Argument &A : makeArgArray(Arguments, NumArgs)) {
309  // FIXME: This does the work of transferNodesFromList inefficiently.
311  if (A.hasName())
312  Name = A.getName();
313  if (!Name.empty())
314  A.setName("");
315  A.setParent(this);
316  if (!Name.empty())
317  A.setName(Name);
318  }
319 
321  assert(!hasLazyArguments());
322  Src.setValueSubclassData(Src.getSubclassDataFromValue() | (1 << 0));
323 }
324 
325 // dropAllReferences() - This function causes all the subinstructions to "let
326 // go" of all references that they are maintaining. This allows one to
327 // 'delete' a whole class at a time, even though there may be circular
328 // references... first all references are dropped, and all use counts go to
329 // zero. Then everything is deleted for real. Note that no operations are
330 // valid on an object that has "dropped all references", except operator
331 // delete.
332 //
334  setIsMaterializable(false);
335 
336  for (BasicBlock &BB : *this)
337  BB.dropAllReferences();
338 
339  // Delete all basic blocks. They are now unused, except possibly by
340  // blockaddresses, but BasicBlock's destructor takes care of those.
341  while (!BasicBlocks.empty())
342  BasicBlocks.begin()->eraseFromParent();
343 
344  // Drop uses of any optional data (real or placeholder).
345  if (getNumOperands()) {
347  setNumHungOffUseOperands(0);
349  }
350 
351  // Metadata is stored in a side-table.
352  clearMetadata();
353 }
354 
357  PAL = PAL.addAttribute(getContext(), i, Kind);
358  setAttributes(PAL);
359 }
360 
361 void Function::addAttribute(unsigned i, Attribute Attr) {
363  PAL = PAL.addAttribute(getContext(), i, Attr);
364  setAttributes(PAL);
365 }
366 
367 void Function::addAttributes(unsigned i, const AttrBuilder &Attrs) {
369  PAL = PAL.addAttributes(getContext(), i, Attrs);
370  setAttributes(PAL);
371 }
372 
375  PAL = PAL.addParamAttribute(getContext(), ArgNo, Kind);
376  setAttributes(PAL);
377 }
378 
379 void Function::addParamAttr(unsigned ArgNo, Attribute Attr) {
381  PAL = PAL.addParamAttribute(getContext(), ArgNo, Attr);
382  setAttributes(PAL);
383 }
384 
385 void Function::addParamAttrs(unsigned ArgNo, const AttrBuilder &Attrs) {
387  PAL = PAL.addParamAttributes(getContext(), ArgNo, Attrs);
388  setAttributes(PAL);
389 }
390 
393  PAL = PAL.removeAttribute(getContext(), i, Kind);
394  setAttributes(PAL);
395 }
396 
399  PAL = PAL.removeAttribute(getContext(), i, Kind);
400  setAttributes(PAL);
401 }
402 
403 void Function::removeAttributes(unsigned i, const AttrBuilder &Attrs) {
405  PAL = PAL.removeAttributes(getContext(), i, Attrs);
406  setAttributes(PAL);
407 }
408 
411  PAL = PAL.removeParamAttribute(getContext(), ArgNo, Kind);
412  setAttributes(PAL);
413 }
414 
415 void Function::removeParamAttr(unsigned ArgNo, StringRef Kind) {
417  PAL = PAL.removeParamAttribute(getContext(), ArgNo, Kind);
418  setAttributes(PAL);
419 }
420 
421 void Function::removeParamAttrs(unsigned ArgNo, const AttrBuilder &Attrs) {
423  PAL = PAL.removeParamAttributes(getContext(), ArgNo, Attrs);
424  setAttributes(PAL);
425 }
426 
427 void Function::addDereferenceableAttr(unsigned i, uint64_t Bytes) {
429  PAL = PAL.addDereferenceableAttr(getContext(), i, Bytes);
430  setAttributes(PAL);
431 }
432 
433 void Function::addDereferenceableParamAttr(unsigned ArgNo, uint64_t Bytes) {
435  PAL = PAL.addDereferenceableParamAttr(getContext(), ArgNo, Bytes);
436  setAttributes(PAL);
437 }
438 
439 void Function::addDereferenceableOrNullAttr(unsigned i, uint64_t Bytes) {
441  PAL = PAL.addDereferenceableOrNullAttr(getContext(), i, Bytes);
442  setAttributes(PAL);
443 }
444 
446  uint64_t Bytes) {
448  PAL = PAL.addDereferenceableOrNullParamAttr(getContext(), ArgNo, Bytes);
449  setAttributes(PAL);
450 }
451 
452 const std::string &Function::getGC() const {
453  assert(hasGC() && "Function has no collector");
454  return getContext().getGC(*this);
455 }
456 
457 void Function::setGC(std::string Str) {
458  setValueSubclassDataBit(14, !Str.empty());
459  getContext().setGC(*this, std::move(Str));
460 }
461 
463  if (!hasGC())
464  return;
465  getContext().deleteGC(*this);
466  setValueSubclassDataBit(14, false);
467 }
468 
469 /// Copy all additional attributes (those not needed to create a Function) from
470 /// the Function Src to this one.
473  setCallingConv(Src->getCallingConv());
474  setAttributes(Src->getAttributes());
475  if (Src->hasGC())
476  setGC(Src->getGC());
477  else
478  clearGC();
479  if (Src->hasPersonalityFn())
480  setPersonalityFn(Src->getPersonalityFn());
481  if (Src->hasPrefixData())
482  setPrefixData(Src->getPrefixData());
483  if (Src->hasPrologueData())
484  setPrologueData(Src->getPrologueData());
485 }
486 
487 /// Table of string intrinsic names indexed by enum value.
488 static const char * const IntrinsicNameTable[] = {
489  "not_intrinsic",
490 #define GET_INTRINSIC_NAME_TABLE
491 #include "llvm/IR/IntrinsicImpl.inc"
492 #undef GET_INTRINSIC_NAME_TABLE
493 };
494 
495 /// Table of per-target intrinsic name tables.
496 #define GET_INTRINSIC_TARGET_DATA
497 #include "llvm/IR/IntrinsicImpl.inc"
498 #undef GET_INTRINSIC_TARGET_DATA
499 
500 /// Find the segment of \c IntrinsicNameTable for intrinsics with the same
501 /// target as \c Name, or the generic table if \c Name is not target specific.
502 ///
503 /// Returns the relevant slice of \c IntrinsicNameTable
505  assert(Name.startswith("llvm."));
506 
507  ArrayRef<IntrinsicTargetInfo> Targets(TargetInfos);
508  // Drop "llvm." and take the first dotted component. That will be the target
509  // if this is target specific.
510  StringRef Target = Name.drop_front(5).split('.').first;
511  auto It = std::lower_bound(Targets.begin(), Targets.end(), Target,
512  [](const IntrinsicTargetInfo &TI,
513  StringRef Target) { return TI.Name < Target; });
514  // We've either found the target or just fall back to the generic set, which
515  // is always first.
516  const auto &TI = It != Targets.end() && It->Name == Target ? *It : Targets[0];
517  return makeArrayRef(&IntrinsicNameTable[1] + TI.Offset, TI.Count);
518 }
519 
520 /// This does the actual lookup of an intrinsic ID which
521 /// matches the given function name.
523  ArrayRef<const char *> NameTable = findTargetSubtable(Name);
524  int Idx = Intrinsic::lookupLLVMIntrinsicByName(NameTable, Name);
525  if (Idx == -1)
527 
528  // Intrinsic IDs correspond to the location in IntrinsicNameTable, but we have
529  // an index into a sub-table.
530  int Adjust = NameTable.data() - IntrinsicNameTable;
531  Intrinsic::ID ID = static_cast<Intrinsic::ID>(Idx + Adjust);
532 
533  // If the intrinsic is not overloaded, require an exact match. If it is
534  // overloaded, require either exact or prefix match.
535  const auto MatchSize = strlen(NameTable[Idx]);
536  assert(Name.size() >= MatchSize && "Expected either exact or prefix match");
537  bool IsExactMatch = Name.size() == MatchSize;
538  return IsExactMatch || isOverloaded(ID) ? ID : Intrinsic::not_intrinsic;
539 }
540 
542  StringRef Name = getName();
543  if (!Name.startswith("llvm.")) {
544  HasLLVMReservedName = false;
545  IntID = Intrinsic::not_intrinsic;
546  return;
547  }
548  HasLLVMReservedName = true;
549  IntID = lookupIntrinsicID(Name);
550 }
551 
552 /// Returns a stable mangling for the type specified for use in the name
553 /// mangling scheme used by 'any' types in intrinsic signatures. The mangling
554 /// of named types is simply their name. Manglings for unnamed types consist
555 /// of a prefix ('p' for pointers, 'a' for arrays, 'f_' for functions)
556 /// combined with the mangling of their component types. A vararg function
557 /// type will have a suffix of 'vararg'. Since function types can contain
558 /// other function types, we close a function type mangling with suffix 'f'
559 /// which can't be confused with it's prefix. This ensures we don't have
560 /// collisions between two unrelated function types. Otherwise, you might
561 /// parse ffXX as f(fXX) or f(fX)X. (X is a placeholder for any other type.)
562 ///
563 static std::string getMangledTypeStr(Type* Ty) {
564  std::string Result;
565  if (PointerType* PTyp = dyn_cast<PointerType>(Ty)) {
566  Result += "p" + utostr(PTyp->getAddressSpace()) +
567  getMangledTypeStr(PTyp->getElementType());
568  } else if (ArrayType* ATyp = dyn_cast<ArrayType>(Ty)) {
569  Result += "a" + utostr(ATyp->getNumElements()) +
570  getMangledTypeStr(ATyp->getElementType());
571  } else if (StructType *STyp = dyn_cast<StructType>(Ty)) {
572  if (!STyp->isLiteral()) {
573  Result += "s_";
574  Result += STyp->getName();
575  } else {
576  Result += "sl_";
577  for (auto Elem : STyp->elements())
578  Result += getMangledTypeStr(Elem);
579  }
580  // Ensure nested structs are distinguishable.
581  Result += "s";
582  } else if (FunctionType *FT = dyn_cast<FunctionType>(Ty)) {
583  Result += "f_" + getMangledTypeStr(FT->getReturnType());
584  for (size_t i = 0; i < FT->getNumParams(); i++)
585  Result += getMangledTypeStr(FT->getParamType(i));
586  if (FT->isVarArg())
587  Result += "vararg";
588  // Ensure nested function types are distinguishable.
589  Result += "f";
590  } else if (isa<VectorType>(Ty)) {
591  Result += "v" + utostr(Ty->getVectorNumElements()) +
593  } else if (Ty) {
594  switch (Ty->getTypeID()) {
595  default: llvm_unreachable("Unhandled type");
596  case Type::VoidTyID: Result += "isVoid"; break;
597  case Type::MetadataTyID: Result += "Metadata"; break;
598  case Type::HalfTyID: Result += "f16"; break;
599  case Type::FloatTyID: Result += "f32"; break;
600  case Type::DoubleTyID: Result += "f64"; break;
601  case Type::X86_FP80TyID: Result += "f80"; break;
602  case Type::FP128TyID: Result += "f128"; break;
603  case Type::PPC_FP128TyID: Result += "ppcf128"; break;
604  case Type::X86_MMXTyID: Result += "x86mmx"; break;
605  case Type::IntegerTyID:
606  Result += "i" + utostr(cast<IntegerType>(Ty)->getBitWidth());
607  break;
608  }
609  }
610  return Result;
611 }
612 
614  assert(id < num_intrinsics && "Invalid intrinsic ID!");
615  assert(!isOverloaded(id) &&
616  "This version of getName does not support overloading");
617  return IntrinsicNameTable[id];
618 }
619 
620 std::string Intrinsic::getName(ID id, ArrayRef<Type*> Tys) {
621  assert(id < num_intrinsics && "Invalid intrinsic ID!");
622  std::string Result(IntrinsicNameTable[id]);
623  for (Type *Ty : Tys) {
624  Result += "." + getMangledTypeStr(Ty);
625  }
626  return Result;
627 }
628 
629 /// IIT_Info - These are enumerators that describe the entries returned by the
630 /// getIntrinsicInfoTableEntries function.
631 ///
632 /// NOTE: This must be kept in synch with the copy in TblGen/IntrinsicEmitter!
633 enum IIT_Info {
634  // Common values should be encoded with 0-15.
635  IIT_Done = 0,
636  IIT_I1 = 1,
637  IIT_I8 = 2,
638  IIT_I16 = 3,
639  IIT_I32 = 4,
640  IIT_I64 = 5,
641  IIT_F16 = 6,
642  IIT_F32 = 7,
643  IIT_F64 = 8,
644  IIT_V2 = 9,
645  IIT_V4 = 10,
646  IIT_V8 = 11,
647  IIT_V16 = 12,
648  IIT_V32 = 13,
649  IIT_PTR = 14,
650  IIT_ARG = 15,
651 
652  // Values from 16+ are only encodable with the inefficient encoding.
653  IIT_V64 = 16,
654  IIT_MMX = 17,
655  IIT_TOKEN = 18,
665  IIT_V1 = 28,
672  IIT_I128 = 35,
673  IIT_V512 = 36,
674  IIT_V1024 = 37,
678  IIT_F128 = 41
679 };
680 
681 static void DecodeIITType(unsigned &NextElt, ArrayRef<unsigned char> Infos,
683  using namespace Intrinsic;
684 
685  IIT_Info Info = IIT_Info(Infos[NextElt++]);
686  unsigned StructElts = 2;
687 
688  switch (Info) {
689  case IIT_Done:
690  OutputTable.push_back(IITDescriptor::get(IITDescriptor::Void, 0));
691  return;
692  case IIT_VARARG:
693  OutputTable.push_back(IITDescriptor::get(IITDescriptor::VarArg, 0));
694  return;
695  case IIT_MMX:
696  OutputTable.push_back(IITDescriptor::get(IITDescriptor::MMX, 0));
697  return;
698  case IIT_TOKEN:
699  OutputTable.push_back(IITDescriptor::get(IITDescriptor::Token, 0));
700  return;
701  case IIT_METADATA:
702  OutputTable.push_back(IITDescriptor::get(IITDescriptor::Metadata, 0));
703  return;
704  case IIT_F16:
705  OutputTable.push_back(IITDescriptor::get(IITDescriptor::Half, 0));
706  return;
707  case IIT_F32:
708  OutputTable.push_back(IITDescriptor::get(IITDescriptor::Float, 0));
709  return;
710  case IIT_F64:
711  OutputTable.push_back(IITDescriptor::get(IITDescriptor::Double, 0));
712  return;
713  case IIT_F128:
714  OutputTable.push_back(IITDescriptor::get(IITDescriptor::Quad, 0));
715  return;
716  case IIT_I1:
717  OutputTable.push_back(IITDescriptor::get(IITDescriptor::Integer, 1));
718  return;
719  case IIT_I8:
720  OutputTable.push_back(IITDescriptor::get(IITDescriptor::Integer, 8));
721  return;
722  case IIT_I16:
723  OutputTable.push_back(IITDescriptor::get(IITDescriptor::Integer,16));
724  return;
725  case IIT_I32:
726  OutputTable.push_back(IITDescriptor::get(IITDescriptor::Integer, 32));
727  return;
728  case IIT_I64:
729  OutputTable.push_back(IITDescriptor::get(IITDescriptor::Integer, 64));
730  return;
731  case IIT_I128:
732  OutputTable.push_back(IITDescriptor::get(IITDescriptor::Integer, 128));
733  return;
734  case IIT_V1:
735  OutputTable.push_back(IITDescriptor::get(IITDescriptor::Vector, 1));
736  DecodeIITType(NextElt, Infos, OutputTable);
737  return;
738  case IIT_V2:
739  OutputTable.push_back(IITDescriptor::get(IITDescriptor::Vector, 2));
740  DecodeIITType(NextElt, Infos, OutputTable);
741  return;
742  case IIT_V4:
743  OutputTable.push_back(IITDescriptor::get(IITDescriptor::Vector, 4));
744  DecodeIITType(NextElt, Infos, OutputTable);
745  return;
746  case IIT_V8:
747  OutputTable.push_back(IITDescriptor::get(IITDescriptor::Vector, 8));
748  DecodeIITType(NextElt, Infos, OutputTable);
749  return;
750  case IIT_V16:
751  OutputTable.push_back(IITDescriptor::get(IITDescriptor::Vector, 16));
752  DecodeIITType(NextElt, Infos, OutputTable);
753  return;
754  case IIT_V32:
755  OutputTable.push_back(IITDescriptor::get(IITDescriptor::Vector, 32));
756  DecodeIITType(NextElt, Infos, OutputTable);
757  return;
758  case IIT_V64:
759  OutputTable.push_back(IITDescriptor::get(IITDescriptor::Vector, 64));
760  DecodeIITType(NextElt, Infos, OutputTable);
761  return;
762  case IIT_V512:
763  OutputTable.push_back(IITDescriptor::get(IITDescriptor::Vector, 512));
764  DecodeIITType(NextElt, Infos, OutputTable);
765  return;
766  case IIT_V1024:
767  OutputTable.push_back(IITDescriptor::get(IITDescriptor::Vector, 1024));
768  DecodeIITType(NextElt, Infos, OutputTable);
769  return;
770  case IIT_PTR:
771  OutputTable.push_back(IITDescriptor::get(IITDescriptor::Pointer, 0));
772  DecodeIITType(NextElt, Infos, OutputTable);
773  return;
774  case IIT_ANYPTR: { // [ANYPTR addrspace, subtype]
775  OutputTable.push_back(IITDescriptor::get(IITDescriptor::Pointer,
776  Infos[NextElt++]));
777  DecodeIITType(NextElt, Infos, OutputTable);
778  return;
779  }
780  case IIT_ARG: {
781  unsigned ArgInfo = (NextElt == Infos.size() ? 0 : Infos[NextElt++]);
782  OutputTable.push_back(IITDescriptor::get(IITDescriptor::Argument, ArgInfo));
783  return;
784  }
785  case IIT_EXTEND_ARG: {
786  unsigned ArgInfo = (NextElt == Infos.size() ? 0 : Infos[NextElt++]);
787  OutputTable.push_back(IITDescriptor::get(IITDescriptor::ExtendArgument,
788  ArgInfo));
789  return;
790  }
791  case IIT_TRUNC_ARG: {
792  unsigned ArgInfo = (NextElt == Infos.size() ? 0 : Infos[NextElt++]);
793  OutputTable.push_back(IITDescriptor::get(IITDescriptor::TruncArgument,
794  ArgInfo));
795  return;
796  }
797  case IIT_HALF_VEC_ARG: {
798  unsigned ArgInfo = (NextElt == Infos.size() ? 0 : Infos[NextElt++]);
799  OutputTable.push_back(IITDescriptor::get(IITDescriptor::HalfVecArgument,
800  ArgInfo));
801  return;
802  }
803  case IIT_SAME_VEC_WIDTH_ARG: {
804  unsigned ArgInfo = (NextElt == Infos.size() ? 0 : Infos[NextElt++]);
805  OutputTable.push_back(IITDescriptor::get(IITDescriptor::SameVecWidthArgument,
806  ArgInfo));
807  return;
808  }
809  case IIT_PTR_TO_ARG: {
810  unsigned ArgInfo = (NextElt == Infos.size() ? 0 : Infos[NextElt++]);
811  OutputTable.push_back(IITDescriptor::get(IITDescriptor::PtrToArgument,
812  ArgInfo));
813  return;
814  }
815  case IIT_PTR_TO_ELT: {
816  unsigned ArgInfo = (NextElt == Infos.size() ? 0 : Infos[NextElt++]);
817  OutputTable.push_back(IITDescriptor::get(IITDescriptor::PtrToElt, ArgInfo));
818  return;
819  }
821  unsigned short ArgNo = (NextElt == Infos.size() ? 0 : Infos[NextElt++]);
822  unsigned short RefNo = (NextElt == Infos.size() ? 0 : Infos[NextElt++]);
823  OutputTable.push_back(
824  IITDescriptor::get(IITDescriptor::VecOfAnyPtrsToElt, ArgNo, RefNo));
825  return;
826  }
827  case IIT_EMPTYSTRUCT:
828  OutputTable.push_back(IITDescriptor::get(IITDescriptor::Struct, 0));
829  return;
830  case IIT_STRUCT8: ++StructElts; LLVM_FALLTHROUGH;
831  case IIT_STRUCT7: ++StructElts; LLVM_FALLTHROUGH;
832  case IIT_STRUCT6: ++StructElts; LLVM_FALLTHROUGH;
833  case IIT_STRUCT5: ++StructElts; LLVM_FALLTHROUGH;
834  case IIT_STRUCT4: ++StructElts; LLVM_FALLTHROUGH;
835  case IIT_STRUCT3: ++StructElts; LLVM_FALLTHROUGH;
836  case IIT_STRUCT2: {
837  OutputTable.push_back(IITDescriptor::get(IITDescriptor::Struct,StructElts));
838 
839  for (unsigned i = 0; i != StructElts; ++i)
840  DecodeIITType(NextElt, Infos, OutputTable);
841  return;
842  }
843  }
844  llvm_unreachable("unhandled");
845 }
846 
847 #define GET_INTRINSIC_GENERATOR_GLOBAL
848 #include "llvm/IR/IntrinsicImpl.inc"
849 #undef GET_INTRINSIC_GENERATOR_GLOBAL
850 
853  // Check to see if the intrinsic's type was expressible by the table.
854  unsigned TableVal = IIT_Table[id-1];
855 
856  // Decode the TableVal into an array of IITValues.
858  ArrayRef<unsigned char> IITEntries;
859  unsigned NextElt = 0;
860  if ((TableVal >> 31) != 0) {
861  // This is an offset into the IIT_LongEncodingTable.
862  IITEntries = IIT_LongEncodingTable;
863 
864  // Strip sentinel bit.
865  NextElt = (TableVal << 1) >> 1;
866  } else {
867  // Decode the TableVal into an array of IITValues. If the entry was encoded
868  // into a single word in the table itself, decode it now.
869  do {
870  IITValues.push_back(TableVal & 0xF);
871  TableVal >>= 4;
872  } while (TableVal);
873 
874  IITEntries = IITValues;
875  NextElt = 0;
876  }
877 
878  // Okay, decode the table into the output vector of IITDescriptors.
879  DecodeIITType(NextElt, IITEntries, T);
880  while (NextElt != IITEntries.size() && IITEntries[NextElt] != 0)
881  DecodeIITType(NextElt, IITEntries, T);
882 }
883 
886  using namespace Intrinsic;
887 
888  IITDescriptor D = Infos.front();
889  Infos = Infos.slice(1);
890 
891  switch (D.Kind) {
892  case IITDescriptor::Void: return Type::getVoidTy(Context);
893  case IITDescriptor::VarArg: return Type::getVoidTy(Context);
894  case IITDescriptor::MMX: return Type::getX86_MMXTy(Context);
895  case IITDescriptor::Token: return Type::getTokenTy(Context);
896  case IITDescriptor::Metadata: return Type::getMetadataTy(Context);
897  case IITDescriptor::Half: return Type::getHalfTy(Context);
898  case IITDescriptor::Float: return Type::getFloatTy(Context);
899  case IITDescriptor::Double: return Type::getDoubleTy(Context);
900  case IITDescriptor::Quad: return Type::getFP128Ty(Context);
901 
903  return IntegerType::get(Context, D.Integer_Width);
904  case IITDescriptor::Vector:
905  return VectorType::get(DecodeFixedType(Infos, Tys, Context),D.Vector_Width);
906  case IITDescriptor::Pointer:
907  return PointerType::get(DecodeFixedType(Infos, Tys, Context),
908  D.Pointer_AddressSpace);
909  case IITDescriptor::Struct: {
911  for (unsigned i = 0, e = D.Struct_NumElements; i != e; ++i)
912  Elts.push_back(DecodeFixedType(Infos, Tys, Context));
913  return StructType::get(Context, Elts);
914  }
915  case IITDescriptor::Argument:
916  return Tys[D.getArgumentNumber()];
917  case IITDescriptor::ExtendArgument: {
918  Type *Ty = Tys[D.getArgumentNumber()];
919  if (VectorType *VTy = dyn_cast<VectorType>(Ty))
921 
922  return IntegerType::get(Context, 2 * cast<IntegerType>(Ty)->getBitWidth());
923  }
924  case IITDescriptor::TruncArgument: {
925  Type *Ty = Tys[D.getArgumentNumber()];
926  if (VectorType *VTy = dyn_cast<VectorType>(Ty))
928 
929  IntegerType *ITy = cast<IntegerType>(Ty);
930  assert(ITy->getBitWidth() % 2 == 0);
931  return IntegerType::get(Context, ITy->getBitWidth() / 2);
932  }
933  case IITDescriptor::HalfVecArgument:
934  return VectorType::getHalfElementsVectorType(cast<VectorType>(
935  Tys[D.getArgumentNumber()]));
936  case IITDescriptor::SameVecWidthArgument: {
937  Type *EltTy = DecodeFixedType(Infos, Tys, Context);
938  Type *Ty = Tys[D.getArgumentNumber()];
939  if (VectorType *VTy = dyn_cast<VectorType>(Ty)) {
940  return VectorType::get(EltTy, VTy->getNumElements());
941  }
942  llvm_unreachable("unhandled");
943  }
944  case IITDescriptor::PtrToArgument: {
945  Type *Ty = Tys[D.getArgumentNumber()];
946  return PointerType::getUnqual(Ty);
947  }
948  case IITDescriptor::PtrToElt: {
949  Type *Ty = Tys[D.getArgumentNumber()];
950  VectorType *VTy = dyn_cast<VectorType>(Ty);
951  if (!VTy)
952  llvm_unreachable("Expected an argument of Vector Type");
953  Type *EltTy = VTy->getVectorElementType();
954  return PointerType::getUnqual(EltTy);
955  }
956  case IITDescriptor::VecOfAnyPtrsToElt:
957  // Return the overloaded type (which determines the pointers address space)
958  return Tys[D.getOverloadArgNumber()];
959  }
960  llvm_unreachable("unhandled");
961 }
962 
964  ID id, ArrayRef<Type*> Tys) {
966  getIntrinsicInfoTableEntries(id, Table);
967 
969  Type *ResultTy = DecodeFixedType(TableRef, Tys, Context);
970 
971  SmallVector<Type*, 8> ArgTys;
972  while (!TableRef.empty())
973  ArgTys.push_back(DecodeFixedType(TableRef, Tys, Context));
974 
975  // DecodeFixedType returns Void for IITDescriptor::Void and IITDescriptor::VarArg
976  // If we see void type as the type of the last argument, it is vararg intrinsic
977  if (!ArgTys.empty() && ArgTys.back()->isVoidTy()) {
978  ArgTys.pop_back();
979  return FunctionType::get(ResultTy, ArgTys, true);
980  }
981  return FunctionType::get(ResultTy, ArgTys, false);
982 }
983 
985 #define GET_INTRINSIC_OVERLOAD_TABLE
986 #include "llvm/IR/IntrinsicImpl.inc"
987 #undef GET_INTRINSIC_OVERLOAD_TABLE
988 }
989 
991  switch (id) {
992  default:
993  return true;
994 
995  case Intrinsic::experimental_gc_statepoint:
996  case Intrinsic::experimental_patchpoint_void:
997  case Intrinsic::experimental_patchpoint_i64:
998  return false;
999  }
1000 }
1001 
1002 /// This defines the "Intrinsic::getAttributes(ID id)" method.
1003 #define GET_INTRINSIC_ATTRIBUTES
1004 #include "llvm/IR/IntrinsicImpl.inc"
1005 #undef GET_INTRINSIC_ATTRIBUTES
1006 
1008  // There can never be multiple globals with the same name of different types,
1009  // because intrinsics must be a specific type.
1010  return
1011  cast<Function>(M->getOrInsertFunction(getName(id, Tys),
1012  getType(M->getContext(), id, Tys)));
1013 }
1014 
1015 // This defines the "Intrinsic::getIntrinsicForGCCBuiltin()" method.
1016 #define GET_LLVM_INTRINSIC_FOR_GCC_BUILTIN
1017 #include "llvm/IR/IntrinsicImpl.inc"
1018 #undef GET_LLVM_INTRINSIC_FOR_GCC_BUILTIN
1019 
1020 // This defines the "Intrinsic::getIntrinsicForMSBuiltin()" method.
1021 #define GET_LLVM_INTRINSIC_FOR_MS_BUILTIN
1022 #include "llvm/IR/IntrinsicImpl.inc"
1023 #undef GET_LLVM_INTRINSIC_FOR_MS_BUILTIN
1024 
1026  SmallVectorImpl<Type*> &ArgTys) {
1027  using namespace Intrinsic;
1028 
1029  // If we ran out of descriptors, there are too many arguments.
1030  if (Infos.empty()) return true;
1031  IITDescriptor D = Infos.front();
1032  Infos = Infos.slice(1);
1033 
1034  switch (D.Kind) {
1035  case IITDescriptor::Void: return !Ty->isVoidTy();
1036  case IITDescriptor::VarArg: return true;
1037  case IITDescriptor::MMX: return !Ty->isX86_MMXTy();
1038  case IITDescriptor::Token: return !Ty->isTokenTy();
1039  case IITDescriptor::Metadata: return !Ty->isMetadataTy();
1040  case IITDescriptor::Half: return !Ty->isHalfTy();
1041  case IITDescriptor::Float: return !Ty->isFloatTy();
1042  case IITDescriptor::Double: return !Ty->isDoubleTy();
1043  case IITDescriptor::Quad: return !Ty->isFP128Ty();
1044  case IITDescriptor::Integer: return !Ty->isIntegerTy(D.Integer_Width);
1045  case IITDescriptor::Vector: {
1046  VectorType *VT = dyn_cast<VectorType>(Ty);
1047  return !VT || VT->getNumElements() != D.Vector_Width ||
1048  matchIntrinsicType(VT->getElementType(), Infos, ArgTys);
1049  }
1050  case IITDescriptor::Pointer: {
1051  PointerType *PT = dyn_cast<PointerType>(Ty);
1052  return !PT || PT->getAddressSpace() != D.Pointer_AddressSpace ||
1053  matchIntrinsicType(PT->getElementType(), Infos, ArgTys);
1054  }
1055 
1056  case IITDescriptor::Struct: {
1057  StructType *ST = dyn_cast<StructType>(Ty);
1058  if (!ST || ST->getNumElements() != D.Struct_NumElements)
1059  return true;
1060 
1061  for (unsigned i = 0, e = D.Struct_NumElements; i != e; ++i)
1062  if (matchIntrinsicType(ST->getElementType(i), Infos, ArgTys))
1063  return true;
1064  return false;
1065  }
1066 
1067  case IITDescriptor::Argument:
1068  // Two cases here - If this is the second occurrence of an argument, verify
1069  // that the later instance matches the previous instance.
1070  if (D.getArgumentNumber() < ArgTys.size())
1071  return Ty != ArgTys[D.getArgumentNumber()];
1072 
1073  // Otherwise, if this is the first instance of an argument, record it and
1074  // verify the "Any" kind.
1075  assert(D.getArgumentNumber() == ArgTys.size() && "Table consistency error");
1076  ArgTys.push_back(Ty);
1077 
1078  switch (D.getArgumentKind()) {
1079  case IITDescriptor::AK_Any: return false; // Success
1080  case IITDescriptor::AK_AnyInteger: return !Ty->isIntOrIntVectorTy();
1081  case IITDescriptor::AK_AnyFloat: return !Ty->isFPOrFPVectorTy();
1082  case IITDescriptor::AK_AnyVector: return !isa<VectorType>(Ty);
1083  case IITDescriptor::AK_AnyPointer: return !isa<PointerType>(Ty);
1084  }
1085  llvm_unreachable("all argument kinds not covered");
1086 
1087  case IITDescriptor::ExtendArgument: {
1088  // This may only be used when referring to a previous vector argument.
1089  if (D.getArgumentNumber() >= ArgTys.size())
1090  return true;
1091 
1092  Type *NewTy = ArgTys[D.getArgumentNumber()];
1093  if (VectorType *VTy = dyn_cast<VectorType>(NewTy))
1095  else if (IntegerType *ITy = dyn_cast<IntegerType>(NewTy))
1096  NewTy = IntegerType::get(ITy->getContext(), 2 * ITy->getBitWidth());
1097  else
1098  return true;
1099 
1100  return Ty != NewTy;
1101  }
1102  case IITDescriptor::TruncArgument: {
1103  // This may only be used when referring to a previous vector argument.
1104  if (D.getArgumentNumber() >= ArgTys.size())
1105  return true;
1106 
1107  Type *NewTy = ArgTys[D.getArgumentNumber()];
1108  if (VectorType *VTy = dyn_cast<VectorType>(NewTy))
1110  else if (IntegerType *ITy = dyn_cast<IntegerType>(NewTy))
1111  NewTy = IntegerType::get(ITy->getContext(), ITy->getBitWidth() / 2);
1112  else
1113  return true;
1114 
1115  return Ty != NewTy;
1116  }
1117  case IITDescriptor::HalfVecArgument:
1118  // This may only be used when referring to a previous vector argument.
1119  return D.getArgumentNumber() >= ArgTys.size() ||
1120  !isa<VectorType>(ArgTys[D.getArgumentNumber()]) ||
1122  cast<VectorType>(ArgTys[D.getArgumentNumber()])) != Ty;
1123  case IITDescriptor::SameVecWidthArgument: {
1124  if (D.getArgumentNumber() >= ArgTys.size())
1125  return true;
1126  VectorType * ReferenceType =
1127  dyn_cast<VectorType>(ArgTys[D.getArgumentNumber()]);
1128  VectorType *ThisArgType = dyn_cast<VectorType>(Ty);
1129  if (!ThisArgType || !ReferenceType ||
1130  (ReferenceType->getVectorNumElements() !=
1131  ThisArgType->getVectorNumElements()))
1132  return true;
1133  return matchIntrinsicType(ThisArgType->getVectorElementType(),
1134  Infos, ArgTys);
1135  }
1136  case IITDescriptor::PtrToArgument: {
1137  if (D.getArgumentNumber() >= ArgTys.size())
1138  return true;
1139  Type * ReferenceType = ArgTys[D.getArgumentNumber()];
1140  PointerType *ThisArgType = dyn_cast<PointerType>(Ty);
1141  return (!ThisArgType || ThisArgType->getElementType() != ReferenceType);
1142  }
1143  case IITDescriptor::PtrToElt: {
1144  if (D.getArgumentNumber() >= ArgTys.size())
1145  return true;
1146  VectorType * ReferenceType =
1147  dyn_cast<VectorType> (ArgTys[D.getArgumentNumber()]);
1148  PointerType *ThisArgType = dyn_cast<PointerType>(Ty);
1149 
1150  return (!ThisArgType || !ReferenceType ||
1151  ThisArgType->getElementType() != ReferenceType->getElementType());
1152  }
1153  case IITDescriptor::VecOfAnyPtrsToElt: {
1154  unsigned RefArgNumber = D.getRefArgNumber();
1155 
1156  // This may only be used when referring to a previous argument.
1157  if (RefArgNumber >= ArgTys.size())
1158  return true;
1159 
1160  // Record the overloaded type
1161  assert(D.getOverloadArgNumber() == ArgTys.size() &&
1162  "Table consistency error");
1163  ArgTys.push_back(Ty);
1164 
1165  // Verify the overloaded type "matches" the Ref type.
1166  // i.e. Ty is a vector with the same width as Ref.
1167  // Composed of pointers to the same element type as Ref.
1168  VectorType *ReferenceType = dyn_cast<VectorType>(ArgTys[RefArgNumber]);
1169  VectorType *ThisArgVecTy = dyn_cast<VectorType>(Ty);
1170  if (!ThisArgVecTy || !ReferenceType ||
1171  (ReferenceType->getVectorNumElements() !=
1172  ThisArgVecTy->getVectorNumElements()))
1173  return true;
1174  PointerType *ThisArgEltTy =
1175  dyn_cast<PointerType>(ThisArgVecTy->getVectorElementType());
1176  if (!ThisArgEltTy)
1177  return true;
1178  return ThisArgEltTy->getElementType() !=
1179  ReferenceType->getVectorElementType();
1180  }
1181  }
1182  llvm_unreachable("unhandled");
1183 }
1184 
1185 bool
1188  // If there are no descriptors left, then it can't be a vararg.
1189  if (Infos.empty())
1190  return isVarArg;
1191 
1192  // There should be only one descriptor remaining at this point.
1193  if (Infos.size() != 1)
1194  return true;
1195 
1196  // Check and verify the descriptor.
1197  IITDescriptor D = Infos.front();
1198  Infos = Infos.slice(1);
1199  if (D.Kind == IITDescriptor::VarArg)
1200  return !isVarArg;
1201 
1202  return true;
1203 }
1204 
1207  if (!ID)
1208  return None;
1209 
1210  FunctionType *FTy = F->getFunctionType();
1211  // Accumulate an array of overloaded types for the given intrinsic
1212  SmallVector<Type *, 4> ArgTys;
1213  {
1215  getIntrinsicInfoTableEntries(ID, Table);
1217 
1218  // If we encounter any problems matching the signature with the descriptor
1219  // just give up remangling. It's up to verifier to report the discrepancy.
1220  if (Intrinsic::matchIntrinsicType(FTy->getReturnType(), TableRef, ArgTys))
1221  return None;
1222  for (auto Ty : FTy->params())
1223  if (Intrinsic::matchIntrinsicType(Ty, TableRef, ArgTys))
1224  return None;
1225  if (Intrinsic::matchIntrinsicVarArg(FTy->isVarArg(), TableRef))
1226  return None;
1227  }
1228 
1229  StringRef Name = F->getName();
1230  if (Name == Intrinsic::getName(ID, ArgTys))
1231  return None;
1232 
1233  auto NewDecl = Intrinsic::getDeclaration(F->getParent(), ID, ArgTys);
1234  NewDecl->setCallingConv(F->getCallingConv());
1235  assert(NewDecl->getFunctionType() == FTy && "Shouldn't change the signature");
1236  return NewDecl;
1237 }
1238 
1239 /// hasAddressTaken - returns true if there are any uses of this function
1240 /// other than direct calls or invokes to it.
1241 bool Function::hasAddressTaken(const User* *PutOffender) const {
1242  for (const Use &U : uses()) {
1243  const User *FU = U.getUser();
1244  if (isa<BlockAddress>(FU))
1245  continue;
1246  if (!isa<CallInst>(FU) && !isa<InvokeInst>(FU)) {
1247  if (PutOffender)
1248  *PutOffender = FU;
1249  return true;
1250  }
1251  ImmutableCallSite CS(cast<Instruction>(FU));
1252  if (!CS.isCallee(&U)) {
1253  if (PutOffender)
1254  *PutOffender = FU;
1255  return true;
1256  }
1257  }
1258  return false;
1259 }
1260 
1262  // Check the linkage
1263  if (!hasLinkOnceLinkage() && !hasLocalLinkage() &&
1264  !hasAvailableExternallyLinkage())
1265  return false;
1266 
1267  // Check if the function is used by anything other than a blockaddress.
1268  for (const User *U : users())
1269  if (!isa<BlockAddress>(U))
1270  return false;
1271 
1272  return true;
1273 }
1274 
1275 /// callsFunctionThatReturnsTwice - Return true if the function has a call to
1276 /// setjmp or other function that gcc recognizes as "returning twice".
1278  for (const_inst_iterator
1279  I = inst_begin(this), E = inst_end(this); I != E; ++I) {
1280  ImmutableCallSite CS(&*I);
1281  if (CS && CS.hasFnAttr(Attribute::ReturnsTwice))
1282  return true;
1283  }
1284 
1285  return false;
1286 }
1287 
1289  assert(hasPersonalityFn() && getNumOperands());
1290  return cast<Constant>(Op<0>());
1291 }
1292 
1294  setHungoffOperand<0>(Fn);
1295  setValueSubclassDataBit(3, Fn != nullptr);
1296 }
1297 
1299  assert(hasPrefixData() && getNumOperands());
1300  return cast<Constant>(Op<1>());
1301 }
1302 
1304  setHungoffOperand<1>(PrefixData);
1305  setValueSubclassDataBit(1, PrefixData != nullptr);
1306 }
1307 
1309  assert(hasPrologueData() && getNumOperands());
1310  return cast<Constant>(Op<2>());
1311 }
1312 
1314  setHungoffOperand<2>(PrologueData);
1315  setValueSubclassDataBit(2, PrologueData != nullptr);
1316 }
1317 
1318 void Function::allocHungoffUselist() {
1319  // If we've already allocated a uselist, stop here.
1320  if (getNumOperands())
1321  return;
1322 
1323  allocHungoffUses(3, /*IsPhi=*/ false);
1324  setNumHungOffUseOperands(3);
1325 
1326  // Initialize the uselist with placeholder operands to allow traversal.
1328  Op<0>().set(CPN);
1329  Op<1>().set(CPN);
1330  Op<2>().set(CPN);
1331 }
1332 
1333 template <int Idx>
1334 void Function::setHungoffOperand(Constant *C) {
1335  if (C) {
1336  allocHungoffUselist();
1337  Op<Idx>().set(C);
1338  } else if (getNumOperands()) {
1339  Op<Idx>().set(
1341  }
1342 }
1343 
1344 void Function::setValueSubclassDataBit(unsigned Bit, bool On) {
1345  assert(Bit < 16 && "SubclassData contains only 16 bits");
1346  if (On)
1348  else
1350 }
1351 
1353  const DenseSet<GlobalValue::GUID> *S) {
1354  assert(Count.hasValue());
1355 #if !defined(NDEBUG)
1356  auto PrevCount = getEntryCount();
1357  assert(!PrevCount.hasValue() || PrevCount.getType() == Count.getType());
1358 #endif
1359  MDBuilder MDB(getContext());
1360  setMetadata(
1362  MDB.createFunctionEntryCount(Count.getCount(), Count.isSynthetic(), S));
1363 }
1364 
1366  const DenseSet<GlobalValue::GUID> *Imports) {
1367  setEntryCount(ProfileCount(Count, Type), Imports);
1368 }
1369 
1371  MDNode *MD = getMetadata(LLVMContext::MD_prof);
1372  if (MD && MD->getOperand(0))
1373  if (MDString *MDS = dyn_cast<MDString>(MD->getOperand(0))) {
1374  if (MDS->getString().equals("function_entry_count")) {
1375  ConstantInt *CI = mdconst::extract<ConstantInt>(MD->getOperand(1));
1376  uint64_t Count = CI->getValue().getZExtValue();
1377  // A value of -1 is used for SamplePGO when there were no samples.
1378  // Treat this the same as unknown.
1379  if (Count == (uint64_t)-1)
1380  return ProfileCount::getInvalid();
1381  return ProfileCount(Count, PCT_Real);
1382  } else if (MDS->getString().equals("synthetic_function_entry_count")) {
1383  ConstantInt *CI = mdconst::extract<ConstantInt>(MD->getOperand(1));
1384  uint64_t Count = CI->getValue().getZExtValue();
1385  return ProfileCount(Count, PCT_Synthetic);
1386  }
1387  }
1388  return ProfileCount::getInvalid();
1389 }
1390 
1393  if (MDNode *MD = getMetadata(LLVMContext::MD_prof))
1394  if (MDString *MDS = dyn_cast<MDString>(MD->getOperand(0)))
1395  if (MDS->getString().equals("function_entry_count"))
1396  for (unsigned i = 2; i < MD->getNumOperands(); i++)
1397  R.insert(mdconst::extract<ConstantInt>(MD->getOperand(i))
1398  ->getValue()
1399  .getZExtValue());
1400  return R;
1401 }
1402 
1404  MDBuilder MDB(getContext());
1406  MDB.createFunctionSectionPrefix(Prefix));
1407 }
1408 
1410  if (MDNode *MD = getMetadata(LLVMContext::MD_section_prefix)) {
1411  assert(cast<MDString>(MD->getOperand(0))
1412  ->getString()
1413  .equals("function_section_prefix") &&
1414  "Metadata not match");
1415  return cast<MDString>(MD->getOperand(1))->getString();
1416  }
1417  return None;
1418 }
1419 
1421  return getFnAttribute("null-pointer-is-valid")
1422  .getValueAsString()
1423  .equals("true");
1424 }
1425 
1426 bool llvm::NullPointerIsDefined(const Function *F, unsigned AS) {
1427  if (F && F->nullPointerIsDefined())
1428  return true;
1429 
1430  if (AS != 0)
1431  return true;
1432 
1433  return false;
1434 }
static unsigned getBitWidth(Type *Ty, const DataLayout &DL)
Returns the bitwidth of the given scalar or pointer type.
const T & front() const
front - Get the first element.
Definition: ArrayRef.h:152
bool hasNestAttr() const
Return true if this argument has the nest attribute.
Definition: Function.cpp:130
Type * getVectorElementType() const
Definition: Type.h:371
uint64_t CallInst * C
unsigned short getSubclassDataFromValue() const
Definition: Value.h:655
unsigned getInstructionCount()
Returns the number of non-debug IR instructions in this function.
Definition: Function.cpp:198
iterator_range< use_iterator > uses()
Definition: Value.h:355
bool hasAttribute(Attribute::AttrKind Kind) const
Check if an argument has a given attribute.
Definition: Function.cpp:186
void removeParamAttr(unsigned ArgNo, Attribute::AttrKind Kind)
removes the attribute from the list of attributes.
Definition: Function.cpp:409
static Type * getDoubleTy(LLVMContext &C)
Definition: Type.cpp:165
uint64_t getZExtValue() const
Get zero extended value.
Definition: APInt.h:1557
This class represents an incoming formal argument to a Function.
Definition: Argument.h:30
LLVMContext & Context
uint64_t getDereferenceableOrNullBytes() const
If this argument has the dereferenceable_or_null attribute, return the number of bytes known to be de...
Definition: Function.cpp:124
ArgKind getArgumentKind() const
Definition: Intrinsics.h:130
void dropAllReferences()
Drop all references to operands.
Definition: User.h:295
uint64_t getParamDereferenceableBytes(unsigned ArgNo) const
Extract the number of dereferenceable bytes for a parameter.
Definition: Function.h:427
bool isMetadataTy() const
Return true if this is &#39;metadata&#39;.
Definition: Type.h:191
Compute iterated dominance frontiers using a linear time algorithm.
Definition: AllocatorList.h:24
Type * getElementType(unsigned N) const
Definition: DerivedTypes.h:314
void removeAttr(Attribute::AttrKind Kind)
Remove attributes from an argument.
Definition: Function.cpp:182
Argument(Type *Ty, const Twine &Name="", Function *F=nullptr, unsigned ArgNo=0)
Argument constructor.
Definition: Function.cpp:68
Constant * getOrInsertFunction(StringRef Name, FunctionType *T, AttributeList AttributeList)
Look up the specified function in the module symbol table.
Definition: Module.cpp:142
void addParamAttr(unsigned ArgNo, Attribute::AttrKind Kind)
adds the attribute to the list of attributes for the given arg.
Definition: Function.cpp:373
A Module instance is used to store all the information related to an LLVM module. ...
Definition: Module.h:63
#define LLVM_FALLTHROUGH
Definition: Compiler.h:86
2: 32-bit floating point type
Definition: Type.h:59
const std::string & getGC(const Function &Fn)
Return the GC for a function.
void addDereferenceableAttr(unsigned i, uint64_t Bytes)
adds the dereferenceable attribute to the list of attributes.
Definition: Function.cpp:427
Implements a dense probed hash-table based set.
Definition: DenseSet.h:221
unsigned getNumElements() const
Random access to the elements.
Definition: DerivedTypes.h:313
void clearGC()
Definition: Function.cpp:462
unsigned getParamAlignment(unsigned ArgNo) const
Extract the alignment for a call or parameter (0=unknown).
Definition: Function.h:414
bool hasByValOrInAllocaAttr() const
Return true if this argument has the byval attribute or inalloca attribute.
Definition: Function.cpp:106
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE size_t size() const
size - Get the string size.
Definition: StringRef.h:138
bool isFP128Ty() const
Return true if this is &#39;fp128&#39;.
Definition: Type.h:156
void setGC(const Function &Fn, std::string GCName)
Define the GC for a function.
void setGC(std::string Str)
Definition: Function.cpp:457
This file contains the declarations for metadata subclasses.
static PointerType * get(Type *ElementType, unsigned AddressSpace)
This constructs a pointer to an object of the specified type in a numbered address space...
Definition: Type.cpp:617
The two locations do not alias at all.
Definition: AliasAnalysis.h:85
void addAttrs(AttrBuilder &B)
Add attributes to an argument.
Definition: Function.cpp:168
bool isOverloaded(ID id)
Returns true if the intrinsic can be overloaded.
Definition: Function.cpp:984
LLVMContext & getContext() const
All values hold a context through their type.
Definition: Value.cpp:714
static MutableArrayRef< Argument > makeArgArray(Argument *Args, size_t Count)
Definition: Function.cpp:275
bool hasPrologueData() const
Check whether this function has prologue data.
Definition: Function.h:706
void setSectionPrefix(StringRef Prefix)
Set the section prefix for this function.
Definition: Function.cpp:1403
bool all_of(R &&range, UnaryPredicate P)
Provide wrappers to std::all_of which take ranges instead of having to pass begin/end explicitly...
Definition: STLExtras.h:1030
Metadata node.
Definition: Metadata.h:862
F(f)
4: 80-bit floating point type (X87)
Definition: Type.h:61
This is a type descriptor which explains the type requirements of an intrinsic.
Definition: Intrinsics.h:98
static bool isValidReturnType(Type *RetTy)
Return true if the specified type is valid as a return type.
Definition: Type.cpp:321
const MDOperand & getOperand(unsigned I) const
Definition: Metadata.h:1067
1: 16-bit floating point type
Definition: Type.h:58
static Type * getMetadataTy(LLVMContext &C)
Definition: Type.cpp:166
This defines the Use class.
static VectorType * getTruncatedElementVectorType(VectorType *VTy)
This static method is like getInteger except that the element types are half as wide as the elements ...
Definition: DerivedTypes.h:423
static Type * getX86_MMXTy(LLVMContext &C)
Definition: Type.cpp:171
bool hasByValAttr() const
Return true if this argument has the byval attribute.
Definition: Function.cpp:88
void removeFromParent()
removeFromParent - This method unlinks &#39;this&#39; from the containing module, but does not delete it...
Definition: Function.cpp:206
DenseSet< GlobalValue::GUID > getImportGUIDs() const
Returns the set of GUIDs that needs to be imported to the function for sample PGO, to enable the same inlines as the profiled optimized binary.
Definition: Function.cpp:1391
Constant * getPrologueData() const
Get the prologue data associated with this function.
Definition: Function.cpp:1308
LLVMContext & getContext() const
Return the LLVMContext in which this type was uniqued.
Definition: Type.h:130
AttributeList addDereferenceableParamAttr(LLVMContext &C, unsigned ArgNo, uint64_t Bytes) const
Add the dereferenceable attribute to the attribute set at the given arg index.
Definition: Attributes.h:475
bool hasPrefixData() const
Check whether this function has prefix data.
Definition: Function.h:697
static Type * getTokenTy(LLVMContext &C)
Definition: Type.cpp:167
inst_iterator inst_begin(Function *F)
Definition: InstIterator.h:132
StringRef getName(ID id)
Return the LLVM name for an intrinsic, such as "llvm.ppc.altivec.lvx".
Definition: Function.cpp:613
ProfileCount getEntryCount() const
Get the entry count for this function.
Definition: Function.cpp:1370
AttributeList addDereferenceableOrNullParamAttr(LLVMContext &C, unsigned ArgNo, uint64_t Bytes) const
Add the dereferenceable_or_null attribute to the attribute set at the given arg index.
Definition: Attributes.h:488
Twine - A lightweight data structure for efficiently representing the concatenation of temporary valu...
Definition: Twine.h:81
void setEntryCount(ProfileCount Count, const DenseSet< GlobalValue::GUID > *Imports=nullptr)
Set the entry count for this function.
Definition: Function.cpp:1352
static Type * getFloatTy(LLVMContext &C)
Definition: Type.cpp:164
ArrayRef< T > makeArrayRef(const T &OneElt)
Construct an ArrayRef from a single element.
Definition: ArrayRef.h:451
TypeID getTypeID() const
Return the type id for the type.
Definition: Type.h:138
AttributeList addParamAttribute(LLVMContext &C, unsigned ArgNo, Attribute::AttrKind Kind) const
Add an argument attribute to the list.
Definition: Attributes.h:397
Class to represent struct types.
Definition: DerivedTypes.h:201
LLVMContext & getContext() const
Get the global data context.
Definition: Module.h:242
A Use represents the edge between a Value definition and its users.
Definition: Use.h:56
void deleteGC(const Function &Fn)
Remove the GC for a function.
This class consists of common code factored out of the SmallVector class to reduce code duplication b...
Definition: APFloat.h:42
bool isIntegerTy() const
True if this is an instance of IntegerType.
Definition: Type.h:197
This file contains the simple types necessary to represent the attributes associated with functions a...
bool hasParamAttribute(unsigned ArgNo, Attribute::AttrKind Kind) const
check if an attributes is in the list of attributes.
Definition: Function.h:384
void setName(const Twine &Name)
Change the name of the value.
Definition: Value.cpp:295
uint64_t getNumElements() const
Definition: DerivedTypes.h:359
unsigned getArgumentNumber() const
Definition: Intrinsics.h:123
static StructType * get(LLVMContext &Context, ArrayRef< Type *> Elements, bool isPacked=false)
This static method is the primary way to create a literal StructType.
Definition: Type.cpp:336
Constant * getPrefixData() const
Get the prefix data associated with this function.
Definition: Function.cpp:1298
AttributeList getAttributes(LLVMContext &C, ID id)
Return the attributes for an intrinsic.
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE bool startswith(StringRef Prefix) const
Check if this string starts with the given Prefix.
Definition: StringRef.h:267
llvm::Optional< Function * > remangleIntrinsicFunction(Function *F)
Definition: Function.cpp:1205
Class to represent function types.
Definition: DerivedTypes.h:103
IIT_Info
IIT_Info - These are enumerators that describe the entries returned by the getIntrinsicInfoTableEntri...
Definition: Function.cpp:633
Type * getType() const
All values are typed, get the type of this value.
Definition: Value.h:245
AttributeList removeAttributes(LLVMContext &C, unsigned Index, const AttrBuilder &AttrsToRemove) const
Remove the specified attributes at the specified index from this attribute list.
bool onlyReadsMemory() const
Return true if this argument has the readonly or readnone attribute.
Definition: Function.cpp:162
Class to represent array types.
Definition: DerivedTypes.h:369
bool isVarArg() const
Definition: DerivedTypes.h:123
ArrayRef - Represent a constant reference to an array (0 or more elements consecutively in memory)...
Definition: APInt.h:33
const APInt & getValue() const
Return the constant as an APInt value reference.
Definition: Constants.h:138
auto lower_bound(R &&Range, ForwardIt I) -> decltype(adl_begin(Range))
Provide wrappers to std::lower_bound which take ranges instead of having to pass begin/end explicitly...
Definition: STLExtras.h:1126
const std::string & getGC() const
Definition: Function.cpp:452
void addDereferenceableOrNullAttr(unsigned i, uint64_t Bytes)
adds the dereferenceable_or_null attribute to the list of attributes.
Definition: Function.cpp:439
AttributeList getAttributes() const
Return the attribute list for this Function.
Definition: Function.h:210
bool hasPersonalityFn() const
Check whether this function has a personality function.
Definition: Function.h:688
bool isIntOrIntVectorTy() const
Return true if this is an integer type or a vector of integer types.
Definition: Type.h:203
static Type * DecodeFixedType(ArrayRef< Intrinsic::IITDescriptor > &Infos, ArrayRef< Type *> Tys, LLVMContext &Context)
Definition: Function.cpp:884
constexpr char Attrs[]
Key for Kernel::Metadata::mAttrs.
unsigned getBitWidth() const
Get the number of bits in this IntegerType.
Definition: DerivedTypes.h:66
uint64_t getParamDereferenceableOrNullBytes(unsigned ArgNo) const
Extract the number of dereferenceable_or_null bytes for a parameter.
Definition: Function.h:441
Function * getDeclaration(Module *M, ID id, ArrayRef< Type *> Tys=None)
Create or insert an LLVM Function declaration for an intrinsic, and return it.
Definition: Function.cpp:1007
Class to represent pointers.
Definition: DerivedTypes.h:467
bool hasNoAliasAttr() const
Return true if this argument has the noalias attribute.
Definition: Function.cpp:135
11: Arbitrary bit width integers
Definition: Type.h:71
static std::string getMangledTypeStr(Type *Ty)
Returns a stable mangling for the type specified for use in the name mangling scheme used by &#39;any&#39; ty...
Definition: Function.cpp:563
bool isVoidTy() const
Return true if this is &#39;void&#39;.
Definition: Type.h:141
bool isFloatTy() const
Return true if this is &#39;float&#39;, a 32-bit IEEE fp type.
Definition: Type.h:147
0: type with no size
Definition: Type.h:57
void setCallingConv(CallingConv::ID CC)
Definition: Function.h:203
void addParamAttrs(unsigned ArgNo, const AttrBuilder &Attrs)
adds the attributes to the list of attributes for the given arg.
Definition: Function.cpp:385
void addAttr(Attribute::AttrKind Kind)
Definition: Function.cpp:174
static VectorType * getHalfElementsVectorType(VectorType *VTy)
This static method returns a VectorType with half as many elements as the input type and the same ele...
Definition: DerivedTypes.h:433
void stealArgumentListFrom(Function &Src)
Steal arguments from another function.
Definition: Function.cpp:288
static GCRegistry::Add< OcamlGC > B("ocaml", "ocaml 3.10-compatible GC")
AttributeList addDereferenceableOrNullAttr(LLVMContext &C, unsigned Index, uint64_t Bytes) const
Add the dereferenceable_or_null attribute to the attribute set at the given index.
static ConstantPointerNull * get(PointerType *T)
Static factory methods - Return objects of the specified value.
Definition: Constants.cpp:1378
MutableArrayRef - Represent a mutable reference to an array (0 or more elements consecutively in memo...
Definition: ArrayRef.h:291
bool isLeaf(ID id)
Returns true if the intrinsic is a leaf, i.e.
Definition: Function.cpp:990
static Intrinsic::ID lookupIntrinsicID(StringRef Name)
This does the actual lookup of an intrinsic ID which matches the given function name.
Definition: Function.cpp:522
uint64_t getCount() const
Definition: Function.h:258
const FunctionListType & getFunctionList() const
Get the Module&#39;s list of functions (constant).
Definition: Module.h:519
LLVM Basic Block Representation.
Definition: BasicBlock.h:59
The instances of the Type class are immutable: once they are created, they are never changed...
Definition: Type.h:46
This is an important class for using LLVM in a threaded context.
Definition: LLVMContext.h:69
bool hasNonNullAttr() const
Return true if this argument has the nonnull attribute.
Definition: Function.cpp:77
size_t size() const
size - Get the array size.
Definition: ArrayRef.h:149
static GCRegistry::Add< CoreCLRGC > E("coreclr", "CoreCLR-compatible GC")
This is an important base class in LLVM.
Definition: Constant.h:42
bool hasStructRetAttr() const
Return true if this argument has the sret attribute.
Definition: Function.cpp:145
void copyAttributesFrom(const Function *Src)
copyAttributesFrom - copy all additional attributes (those not needed to create a Function) from the ...
Definition: Function.cpp:471
bool hasFnAttr(Attribute::AttrKind Kind) const
Return true if this function has the given attribute.
Definition: CallSite.h:362
This file contains the declarations for the subclasses of Constant, which represent the different fla...
bool hasSExtAttr() const
Return true if this argument has the sext attribute.
Definition: Function.cpp:158
void removeAttribute(unsigned i, Attribute::AttrKind Kind)
removes the attribute from the list of attributes.
Definition: Function.cpp:391
unsigned getNumParams() const
Return the number of fixed parameters this function type requires.
Definition: DerivedTypes.h:139
AMDGPU Lower Kernel Arguments
ArrayRef< Type * > params() const
Definition: DerivedTypes.h:130
void addAttribute(unsigned i, Attribute::AttrKind Kind)
adds the attribute to the list of attributes.
Definition: Function.cpp:355
static Type * getVoidTy(LLVMContext &C)
Definition: Type.cpp:161
bool isHalfTy() const
Return true if this is &#39;half&#39;, a 16-bit IEEE fp type.
Definition: Type.h:144
6: 128-bit floating point type (two 64-bits, PowerPC)
Definition: Type.h:63
static FunctionType * get(Type *Result, ArrayRef< Type *> Params, bool isVarArg)
This static method is the primary way of constructing a FunctionType.
Definition: Type.cpp:297
bool hasReturnedAttr() const
Return true if this argument has the returned attribute.
Definition: Function.cpp:150
size_t arg_size() const
Definition: Function.h:684
unsigned getAddressSpace() const
Return the address space of the Pointer type.
Definition: DerivedTypes.h:495
void recalculateIntrinsicID()
Recalculate the ID for this function if it is an Intrinsic defined in llvm/Intrinsics.h.
Definition: Function.cpp:541
bool isX86_MMXTy() const
Return true if this is X86 MMX.
Definition: Type.h:182
Optional< StringRef > getSectionPrefix() const
Get the section prefix for this function.
Definition: Function.cpp:1409
Class to represent integer types.
Definition: DerivedTypes.h:40
void removeParamAttrs(unsigned ArgNo, const AttrBuilder &Attrs)
removes the attribute from the list of attributes.
Definition: Function.cpp:421
LLVMContext & getContext() const
getContext - Return a reference to the LLVMContext associated with this function. ...
Definition: Function.cpp:194
bool hasInAllocaAttr() const
Return true if this argument has the inalloca attribute.
Definition: Function.cpp:101
const AMDGPUAS & AS
Class to represent profile counts.
Definition: Function.h:247
size_t size() const
Definition: SmallVector.h:53
static ArrayRef< const char * > findTargetSubtable(StringRef Name)
Find the segment of IntrinsicNameTable for intrinsics with the same target as Name, or the generic table if Name is not target specific.
Definition: Function.cpp:504
C setMetadata(LLVMContext::MD_range, MDNode::get(Context, LowAndHigh))
#define llvm_unreachable(msg)
Marks that the current location is not supposed to be reachable.
const T * data() const
Definition: ArrayRef.h:146
static Type * getFP128Ty(LLVMContext &C)
Definition: Type.cpp:169
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE StringRef drop_front(size_t N=1) const
Return a StringRef equal to &#39;this&#39; but with the first N elements dropped.
Definition: StringRef.h:645
static Type * getHalfTy(LLVMContext &C)
Definition: Type.cpp:163
static IntegerType * get(LLVMContext &C, unsigned NumBits)
This static method is the primary way of constructing an IntegerType.
Definition: Type.cpp:240
unsigned getOverloadArgNumber() const
Definition: Intrinsics.h:139
bool hasParamAttribute(unsigned ArgNo, Attribute::AttrKind Kind) const
Equivalent to hasAttribute(ArgNo + FirstArgIndex, Kind).
static PointerType * getInt1PtrTy(LLVMContext &C, unsigned AS=0)
Definition: Type.cpp:216
enum llvm::Intrinsic::IITDescriptor::IITDescriptorKind Kind
bool matchIntrinsicVarArg(bool isVarArg, ArrayRef< IITDescriptor > &Infos)
Verify if the intrinsic has variable arguments.
Definition: Function.cpp:1186
static PointerType * getUnqual(Type *ElementType)
This constructs a pointer to an object of the specified type in the generic address space (address sp...
Definition: DerivedTypes.h:482
This is the shared class of boolean and integer constants.
Definition: Constants.h:84
void getIntrinsicInfoTableEntries(ID id, SmallVectorImpl< IITDescriptor > &T)
Return the IIT table descriptor for the specified intrinsic into an array of IITDescriptors.
Definition: Function.cpp:851
CallingConv::ID getCallingConv() const
getCallingConv()/setCallingConv(CC) - These method get and set the calling convention of this functio...
Definition: Function.h:199
unsigned getParamAlignment() const
If this is a byval or inalloca argument, return its alignment.
Definition: Function.cpp:113
Module.h This file contains the declarations for the Module class.
FunctionType * getType(LLVMContext &Context, ID id, ArrayRef< Type *> Tys=None)
Return the function type for an intrinsic.
Definition: Function.cpp:963
LLVM_NODISCARD std::pair< StringRef, StringRef > split(char Separator) const
Split into two substrings around the first occurrence of a separator character.
Definition: StringRef.h:727
bool hasSwiftSelfAttr() const
Return true if this argument has the swiftself attribute.
Definition: Function.cpp:93
Type * getReturnType() const
Definition: DerivedTypes.h:124
AttributeList addParamAttributes(LLVMContext &C, unsigned ArgNo, const AttrBuilder &B) const
Add an argument attribute to the list.
Definition: Attributes.h:417
void dropAllReferences()
dropAllReferences() - This method causes all the subinstructions to "let go" of all references that t...
Definition: Function.cpp:333
static GCRegistry::Add< StatepointGC > D("statepoint-example", "an example strategy for statepoint")
static ProfileCount getInvalid()
Definition: Function.h:268
std::string utostr(uint64_t X, bool isNeg=false)
Definition: StringExtras.h:223
bool NullPointerIsDefined(const Function *F, unsigned AS=0)
Check whether null pointer dereferencing is considered undefined behavior for a given function or an ...
Definition: Function.cpp:1426
void setValueSubclassData(unsigned short D)
Definition: Value.h:656
void setAttributes(AttributeList Attrs)
Set the attribute list for this Function.
Definition: Function.h:213
static VectorType * getExtendedElementVectorType(VectorType *VTy)
This static method is like getInteger except that the element types are twice as wide as the elements...
Definition: DerivedTypes.h:415
Intrinsic::ID getIntrinsicID() const LLVM_READONLY
getIntrinsicID - This method returns the ID number of the specified function, or Intrinsic::not_intri...
Definition: Function.h:180
8: Metadata
Definition: Type.h:65
unsigned getVectorNumElements() const
Definition: DerivedTypes.h:462
FunctionType * getFunctionType() const
Returns the FunctionType for me.
Definition: Function.h:150
Class to represent vector types.
Definition: DerivedTypes.h:393
Target - Wrapper for Target specific information.
AttributeList removeParamAttributes(LLVMContext &C, unsigned ArgNo, const AttrBuilder &AttrsToRemove) const
Remove the specified attribute at the specified arg index from this attribute list.
Definition: Attributes.h:457
void push_back(pointer val)
Definition: ilist.h:313
LinkageTypes
An enumeration for the kinds of linkage for global values.
Definition: GlobalValue.h:48
unsigned getArgNo() const
Return the index of this formal argument in its containing function.
Definition: Argument.h:48
iterator_range< user_iterator > users()
Definition: Value.h:400
ArrayRef< T > slice(size_t N, size_t M) const
slice(n, m) - Chop off the first N elements of the array, and keep M elements in the array...
Definition: ArrayRef.h:179
static void DecodeIITType(unsigned &NextElt, ArrayRef< unsigned char > Infos, SmallVectorImpl< Intrinsic::IITDescriptor > &OutputTable)
Definition: Function.cpp:681
Function::ProfileCount ProfileCount
Definition: Function.cpp:58
void removeAttributes(unsigned i, const AttrBuilder &Attrs)
removes the attributes from the list of attributes.
Definition: Function.cpp:403
AttributeList addAttribute(LLVMContext &C, unsigned Index, Attribute::AttrKind Kind) const
Add an attribute to the attribute set at the given index.
bool hasGC() const
hasGC/getGC/setGC/clearGC - The name of the garbage collection algorithm to use during code generatio...
Definition: Function.h:335
const Function * getParent() const
Definition: Argument.h:42
AttributeList addDereferenceableAttr(LLVMContext &C, unsigned Index, uint64_t Bytes) const
Add the dereferenceable attribute to the attribute set at the given index.
unsigned getRefArgNumber() const
Definition: Intrinsics.h:143
LLVM_NODISCARD bool empty() const
Definition: SmallVector.h:56
bool isTokenTy() const
Return true if this is &#39;token&#39;.
Definition: Type.h:194
StringRef getName() const
Return a constant reference to the value&#39;s name.
Definition: Value.cpp:224
Establish a view to a call site for examination.
Definition: CallSite.h:714
AttributeList removeAttribute(LLVMContext &C, unsigned Index, Attribute::AttrKind Kind) const
Remove the specified attribute at the specified index from this attribute list.
bool matchIntrinsicType(Type *Ty, ArrayRef< IITDescriptor > &Infos, SmallVectorImpl< Type *> &ArgTys)
Match the specified type (which comes from an intrinsic argument or return value) with the type const...
Definition: Function.cpp:1025
#define I(x, y, z)
Definition: MD5.cpp:58
bool hasSwiftErrorAttr() const
Return true if this argument has the swifterror attribute.
Definition: Function.cpp:97
void setPrologueData(Constant *PrologueData)
Definition: Function.cpp:1313
Compile-time customization of User operands.
Definition: User.h:43
LLVM_NODISCARD std::enable_if<!is_simple_type< Y >::value, typename cast_retty< X, const Y >::ret_type >::type dyn_cast(const Y &Val)
Definition: Casting.h:323
void eraseFromParent()
eraseFromParent - This method unlinks &#39;this&#39; from the containing module and deletes it...
Definition: Function.cpp:210
AttributeList addAttributes(LLVMContext &C, unsigned Index, const AttrBuilder &B) const
Add attributes to the attribute set at the given index.
bool callsFunctionThatReturnsTwice() const
callsFunctionThatReturnsTwice - Return true if the function has a call to setjmp or other function th...
Definition: Function.cpp:1277
bool isFPOrFPVectorTy() const
Return true if this is a FP type or a vector of FP.
Definition: Type.h:185
const unsigned Kind
3: 64-bit floating point type
Definition: Type.h:60
bool hasAddressTaken(const User **=nullptr) const
hasAddressTaken - returns true if there are any uses of this function other than direct calls or invo...
Definition: Function.cpp:1241
void addAttributes(unsigned i, const AttrBuilder &Attrs)
adds the attributes to the list of attributes.
Definition: Function.cpp:367
void addDereferenceableOrNullParamAttr(unsigned ArgNo, uint64_t Bytes)
adds the dereferenceable_or_null attribute to the list of attributes for the given arg...
Definition: Function.cpp:445
assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())
Module * getParent()
Get the module that this global value is contained inside of...
Definition: GlobalValue.h:565
LLVM Value Representation.
Definition: Value.h:73
Constant * getPersonalityFn() const
Get the personality function associated with this function.
Definition: Function.cpp:1288
static const char * name
static VectorType * get(Type *ElementType, unsigned NumElements)
This static method is the primary way to construct an VectorType.
Definition: Type.cpp:593
ProfileCountType getType() const
Definition: Function.h:259
bool hasZExtAttr() const
Return true if this argument has the zext attribute.
Definition: Function.cpp:154
static const char *const IntrinsicNameTable[]
Table of string intrinsic names indexed by enum value.
Definition: Function.cpp:488
Type * getElementType() const
Definition: DerivedTypes.h:360
MDNode * createFunctionSectionPrefix(StringRef Prefix)
Return metadata containing the section prefix for a function.
Definition: MDBuilder.cpp:81
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:49
inst_iterator inst_end(Function *F)
Definition: InstIterator.h:133
A single uniqued string.
Definition: Metadata.h:602
int lookupLLVMIntrinsicByName(ArrayRef< const char *> NameTable, StringRef Name)
Looks up Name in NameTable via binary search.
void setPersonalityFn(Constant *Fn)
Definition: Function.cpp:1293
bool nullPointerIsDefined() const
Check if null pointer dereferencing is considered undefined behavior for the function.
Definition: Function.cpp:1420
9: MMX vectors (64 bits, X86 specific)
Definition: Type.h:66
AttributeList removeParamAttribute(LLVMContext &C, unsigned ArgNo, Attribute::AttrKind Kind) const
Remove the specified attribute at the specified arg index from this attribute list.
Definition: Attributes.h:443
bool hasNoCaptureAttr() const
Return true if this argument has the nocapture attribute.
Definition: Function.cpp:140
void addDereferenceableParamAttr(unsigned ArgNo, uint64_t Bytes)
adds the dereferenceable attribute to the list of attributes for the given arg.
Definition: Function.cpp:433
void copyAttributesFrom(const GlobalObject *Src)
Definition: Globals.cpp:121
bool isDoubleTy() const
Return true if this is &#39;double&#39;, a 64-bit IEEE fp type.
Definition: Type.h:150
bool use_empty() const
Definition: Value.h:323
bool isDefTriviallyDead() const
isDefTriviallyDead - Return true if it is trivially safe to remove this function definition from the ...
Definition: Function.cpp:1261
uint64_t getDereferenceableBytes() const
If this argument has the dereferenceable attribute, return the number of bytes known to be dereferenc...
Definition: Function.cpp:118
constexpr char Args[]
Key for Kernel::Metadata::mArgs.
bool hasLazyArguments() const
hasLazyArguments/CheckLazyArguments - The argument list of a function is built on demand...
Definition: Function.h:105
Type * getElementType() const
Definition: DerivedTypes.h:486
void dropAllReferences()
Cause all subinstructions to "let go" of all the references that said subinstructions are maintaining...
Definition: BasicBlock.cpp:228
std::vector< uint32_t > Metadata
PAL metadata represented as a vector.
bool empty() const
empty - Check if the array is empty.
Definition: ArrayRef.h:144
AttrKind
This enumeration lists the attributes that can be associated with parameters, function results...
Definition: Attributes.h:70
5: 128-bit floating point type (112-bit mantissa)
Definition: Type.h:62
void setPrefixData(Constant *PrefixData)
Definition: Function.cpp:1303
bool isCallee(Value::const_user_iterator UI) const
Determine whether the passed iterator points to the callee operand&#39;s Use.
Definition: CallSite.h:143