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llvm-mirror/lib/IR/LLVMContextImpl.h
Sourabh Singh Tomar 9241b8151b [DebugInfo][flang]Added support for representing Fortran assumed length strings 
This patch adds support for representing Fortran `character(n)`.

Primarily patch is based out of D54114 with appropriate modifications.

Test case IR is generated using our downstream classic-flang. We're in process
of upstreaming flang PR's but classic-flang has dependencies on llvm, so
this has to get in first.

Patch includes functional test case for both IR and corresponding
dwarf, furthermore it has been manually tested as well using GDB.

Source snippet:
```
 program assumedLength
   call sub('Hello')
   call sub('Goodbye')
   contains
   subroutine sub(string)
           implicit none
           character(len=*), intent(in) :: string
           print *, string
   end subroutine sub
 end program assumedLength
```

GDB:
```
(gdb) ptype string
type = character (5)
(gdb) p string
$1 = 'Hello'
```

Reviewed By: aprantl, schweitz

Differential Revision: https://reviews.llvm.org/D86305
2020-08-22 10:13:40 +05:30

1483 lines
53 KiB
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//===- LLVMContextImpl.h - The LLVMContextImpl opaque class -----*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file declares LLVMContextImpl, the opaque implementation
// of LLVMContext.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_IR_LLVMCONTEXTIMPL_H
#define LLVM_LIB_IR_LLVMCONTEXTIMPL_H
#include "AttributeImpl.h"
#include "ConstantsContext.h"
#include "llvm/ADT/APFloat.h"
#include "llvm/ADT/APInt.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/DenseMapInfo.h"
#include "llvm/ADT/DenseSet.h"
#include "llvm/ADT/FoldingSet.h"
#include "llvm/ADT/Hashing.h"
#include "llvm/ADT/Optional.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/BinaryFormat/Dwarf.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DebugInfoMetadata.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/LLVMRemarkStreamer.h"
#include "llvm/IR/Metadata.h"
#include "llvm/IR/TrackingMDRef.h"
#include "llvm/Support/Allocator.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/StringSaver.h"
#include "llvm/Support/YAMLTraits.h"
#include <algorithm>
#include <cassert>
#include <cstddef>
#include <cstdint>
#include <memory>
#include <string>
#include <utility>
#include <vector>
namespace llvm {
class StringRef;
class Type;
class Value;
class ValueHandleBase;
using DenseMapAPIntKeyInfo = DenseMapInfo<APInt>;
struct DenseMapAPFloatKeyInfo {
static inline APFloat getEmptyKey() { return APFloat(APFloat::Bogus(), 1); }
static inline APFloat getTombstoneKey() { return APFloat(APFloat::Bogus(), 2); }
static unsigned getHashValue(const APFloat &Key) {
return static_cast<unsigned>(hash_value(Key));
}
static bool isEqual(const APFloat &LHS, const APFloat &RHS) {
return LHS.bitwiseIsEqual(RHS);
}
};
struct AnonStructTypeKeyInfo {
struct KeyTy {
ArrayRef<Type*> ETypes;
bool isPacked;
KeyTy(const ArrayRef<Type*>& E, bool P) :
ETypes(E), isPacked(P) {}
KeyTy(const StructType *ST)
: ETypes(ST->elements()), isPacked(ST->isPacked()) {}
bool operator==(const KeyTy& that) const {
if (isPacked != that.isPacked)
return false;
if (ETypes != that.ETypes)
return false;
return true;
}
bool operator!=(const KeyTy& that) const {
return !this->operator==(that);
}
};
static inline StructType* getEmptyKey() {
return DenseMapInfo<StructType*>::getEmptyKey();
}
static inline StructType* getTombstoneKey() {
return DenseMapInfo<StructType*>::getTombstoneKey();
}
static unsigned getHashValue(const KeyTy& Key) {
return hash_combine(hash_combine_range(Key.ETypes.begin(),
Key.ETypes.end()),
Key.isPacked);
}
static unsigned getHashValue(const StructType *ST) {
return getHashValue(KeyTy(ST));
}
static bool isEqual(const KeyTy& LHS, const StructType *RHS) {
if (RHS == getEmptyKey() || RHS == getTombstoneKey())
return false;
return LHS == KeyTy(RHS);
}
static bool isEqual(const StructType *LHS, const StructType *RHS) {
return LHS == RHS;
}
};
struct FunctionTypeKeyInfo {
struct KeyTy {
const Type *ReturnType;
ArrayRef<Type*> Params;
bool isVarArg;
KeyTy(const Type* R, const ArrayRef<Type*>& P, bool V) :
ReturnType(R), Params(P), isVarArg(V) {}
KeyTy(const FunctionType *FT)
: ReturnType(FT->getReturnType()), Params(FT->params()),
isVarArg(FT->isVarArg()) {}
bool operator==(const KeyTy& that) const {
if (ReturnType != that.ReturnType)
return false;
if (isVarArg != that.isVarArg)
return false;
if (Params != that.Params)
return false;
return true;
}
bool operator!=(const KeyTy& that) const {
return !this->operator==(that);
}
};
static inline FunctionType* getEmptyKey() {
return DenseMapInfo<FunctionType*>::getEmptyKey();
}
static inline FunctionType* getTombstoneKey() {
return DenseMapInfo<FunctionType*>::getTombstoneKey();
}
static unsigned getHashValue(const KeyTy& Key) {
return hash_combine(Key.ReturnType,
hash_combine_range(Key.Params.begin(),
Key.Params.end()),
Key.isVarArg);
}
static unsigned getHashValue(const FunctionType *FT) {
return getHashValue(KeyTy(FT));
}
static bool isEqual(const KeyTy& LHS, const FunctionType *RHS) {
if (RHS == getEmptyKey() || RHS == getTombstoneKey())
return false;
return LHS == KeyTy(RHS);
}
static bool isEqual(const FunctionType *LHS, const FunctionType *RHS) {
return LHS == RHS;
}
};
/// Structure for hashing arbitrary MDNode operands.
class MDNodeOpsKey {
ArrayRef<Metadata *> RawOps;
ArrayRef<MDOperand> Ops;
unsigned Hash;
protected:
MDNodeOpsKey(ArrayRef<Metadata *> Ops)
: RawOps(Ops), Hash(calculateHash(Ops)) {}
template <class NodeTy>
MDNodeOpsKey(const NodeTy *N, unsigned Offset = 0)
: Ops(N->op_begin() + Offset, N->op_end()), Hash(N->getHash()) {}
template <class NodeTy>
bool compareOps(const NodeTy *RHS, unsigned Offset = 0) const {
if (getHash() != RHS->getHash())
return false;
assert((RawOps.empty() || Ops.empty()) && "Two sets of operands?");
return RawOps.empty() ? compareOps(Ops, RHS, Offset)
: compareOps(RawOps, RHS, Offset);
}
static unsigned calculateHash(MDNode *N, unsigned Offset = 0);
private:
template <class T>
static bool compareOps(ArrayRef<T> Ops, const MDNode *RHS, unsigned Offset) {
if (Ops.size() != RHS->getNumOperands() - Offset)
return false;
return std::equal(Ops.begin(), Ops.end(), RHS->op_begin() + Offset);
}
static unsigned calculateHash(ArrayRef<Metadata *> Ops);
public:
unsigned getHash() const { return Hash; }
};
template <class NodeTy> struct MDNodeKeyImpl;
/// Configuration point for MDNodeInfo::isEqual().
template <class NodeTy> struct MDNodeSubsetEqualImpl {
using KeyTy = MDNodeKeyImpl<NodeTy>;
static bool isSubsetEqual(const KeyTy &LHS, const NodeTy *RHS) {
return false;
}
static bool isSubsetEqual(const NodeTy *LHS, const NodeTy *RHS) {
return false;
}
};
/// DenseMapInfo for MDTuple.
///
/// Note that we don't need the is-function-local bit, since that's implicit in
/// the operands.
template <> struct MDNodeKeyImpl<MDTuple> : MDNodeOpsKey {
MDNodeKeyImpl(ArrayRef<Metadata *> Ops) : MDNodeOpsKey(Ops) {}
MDNodeKeyImpl(const MDTuple *N) : MDNodeOpsKey(N) {}
bool isKeyOf(const MDTuple *RHS) const { return compareOps(RHS); }
unsigned getHashValue() const { return getHash(); }
static unsigned calculateHash(MDTuple *N) {
return MDNodeOpsKey::calculateHash(N);
}
};
/// DenseMapInfo for DILocation.
template <> struct MDNodeKeyImpl<DILocation> {
unsigned Line;
unsigned Column;
Metadata *Scope;
Metadata *InlinedAt;
bool ImplicitCode;
MDNodeKeyImpl(unsigned Line, unsigned Column, Metadata *Scope,
Metadata *InlinedAt, bool ImplicitCode)
: Line(Line), Column(Column), Scope(Scope), InlinedAt(InlinedAt),
ImplicitCode(ImplicitCode) {}
MDNodeKeyImpl(const DILocation *L)
: Line(L->getLine()), Column(L->getColumn()), Scope(L->getRawScope()),
InlinedAt(L->getRawInlinedAt()), ImplicitCode(L->isImplicitCode()) {}
bool isKeyOf(const DILocation *RHS) const {
return Line == RHS->getLine() && Column == RHS->getColumn() &&
Scope == RHS->getRawScope() && InlinedAt == RHS->getRawInlinedAt() &&
ImplicitCode == RHS->isImplicitCode();
}
unsigned getHashValue() const {
return hash_combine(Line, Column, Scope, InlinedAt, ImplicitCode);
}
};
/// DenseMapInfo for GenericDINode.
template <> struct MDNodeKeyImpl<GenericDINode> : MDNodeOpsKey {
unsigned Tag;
MDString *Header;
MDNodeKeyImpl(unsigned Tag, MDString *Header, ArrayRef<Metadata *> DwarfOps)
: MDNodeOpsKey(DwarfOps), Tag(Tag), Header(Header) {}
MDNodeKeyImpl(const GenericDINode *N)
: MDNodeOpsKey(N, 1), Tag(N->getTag()), Header(N->getRawHeader()) {}
bool isKeyOf(const GenericDINode *RHS) const {
return Tag == RHS->getTag() && Header == RHS->getRawHeader() &&
compareOps(RHS, 1);
}
unsigned getHashValue() const { return hash_combine(getHash(), Tag, Header); }
static unsigned calculateHash(GenericDINode *N) {
return MDNodeOpsKey::calculateHash(N, 1);
}
};
template <> struct MDNodeKeyImpl<DISubrange> {
Metadata *CountNode;
Metadata *LowerBound;
Metadata *UpperBound;
Metadata *Stride;
MDNodeKeyImpl(Metadata *CountNode, Metadata *LowerBound, Metadata *UpperBound,
Metadata *Stride)
: CountNode(CountNode), LowerBound(LowerBound), UpperBound(UpperBound),
Stride(Stride) {}
MDNodeKeyImpl(const DISubrange *N)
: CountNode(N->getRawCountNode()), LowerBound(N->getRawLowerBound()),
UpperBound(N->getRawUpperBound()), Stride(N->getRawStride()) {}
bool isKeyOf(const DISubrange *RHS) const {
auto BoundsEqual = [=](Metadata *Node1, Metadata *Node2) -> bool {
if (Node1 == Node2)
return true;
ConstantAsMetadata *MD1 = dyn_cast_or_null<ConstantAsMetadata>(Node1);
ConstantAsMetadata *MD2 = dyn_cast_or_null<ConstantAsMetadata>(Node2);
if (MD1 && MD2) {
ConstantInt *CV1 = cast<ConstantInt>(MD1->getValue());
ConstantInt *CV2 = cast<ConstantInt>(MD2->getValue());
if (CV1->getSExtValue() == CV2->getSExtValue())
return true;
}
return false;
};
return BoundsEqual(CountNode, RHS->getRawCountNode()) &&
BoundsEqual(LowerBound, RHS->getRawLowerBound()) &&
BoundsEqual(UpperBound, RHS->getRawUpperBound()) &&
BoundsEqual(Stride, RHS->getRawStride());
}
unsigned getHashValue() const {
if (CountNode)
if (auto *MD = dyn_cast<ConstantAsMetadata>(CountNode))
return hash_combine(cast<ConstantInt>(MD->getValue())->getSExtValue(),
LowerBound, UpperBound, Stride);
return hash_combine(CountNode, LowerBound, UpperBound, Stride);
}
};
template <> struct MDNodeKeyImpl<DIEnumerator> {
APInt Value;
MDString *Name;
bool IsUnsigned;
MDNodeKeyImpl(APInt Value, bool IsUnsigned, MDString *Name)
: Value(Value), Name(Name), IsUnsigned(IsUnsigned) {}
MDNodeKeyImpl(int64_t Value, bool IsUnsigned, MDString *Name)
: Value(APInt(64, Value, !IsUnsigned)), Name(Name),
IsUnsigned(IsUnsigned) {}
MDNodeKeyImpl(const DIEnumerator *N)
: Value(N->getValue()), Name(N->getRawName()),
IsUnsigned(N->isUnsigned()) {}
bool isKeyOf(const DIEnumerator *RHS) const {
return APInt::isSameValue(Value, RHS->getValue()) &&
IsUnsigned == RHS->isUnsigned() && Name == RHS->getRawName();
}
unsigned getHashValue() const { return hash_combine(Value, Name); }
};
template <> struct MDNodeKeyImpl<DIBasicType> {
unsigned Tag;
MDString *Name;
uint64_t SizeInBits;
uint32_t AlignInBits;
unsigned Encoding;
unsigned Flags;
MDNodeKeyImpl(unsigned Tag, MDString *Name, uint64_t SizeInBits,
uint32_t AlignInBits, unsigned Encoding, unsigned Flags)
: Tag(Tag), Name(Name), SizeInBits(SizeInBits), AlignInBits(AlignInBits),
Encoding(Encoding), Flags(Flags) {}
MDNodeKeyImpl(const DIBasicType *N)
: Tag(N->getTag()), Name(N->getRawName()), SizeInBits(N->getSizeInBits()),
AlignInBits(N->getAlignInBits()), Encoding(N->getEncoding()), Flags(N->getFlags()) {}
bool isKeyOf(const DIBasicType *RHS) const {
return Tag == RHS->getTag() && Name == RHS->getRawName() &&
SizeInBits == RHS->getSizeInBits() &&
AlignInBits == RHS->getAlignInBits() &&
Encoding == RHS->getEncoding() &&
Flags == RHS->getFlags();
}
unsigned getHashValue() const {
return hash_combine(Tag, Name, SizeInBits, AlignInBits, Encoding);
}
};
template <> struct MDNodeKeyImpl<DIStringType> {
unsigned Tag;
MDString *Name;
Metadata *StringLength;
Metadata *StringLengthExp;
uint64_t SizeInBits;
uint32_t AlignInBits;
unsigned Encoding;
MDNodeKeyImpl(unsigned Tag, MDString *Name, Metadata *StringLength,
Metadata *StringLengthExp, uint64_t SizeInBits,
uint32_t AlignInBits, unsigned Encoding)
: Tag(Tag), Name(Name), StringLength(StringLength),
StringLengthExp(StringLengthExp), SizeInBits(SizeInBits),
AlignInBits(AlignInBits), Encoding(Encoding) {}
MDNodeKeyImpl(const DIStringType *N)
: Tag(N->getTag()), Name(N->getRawName()),
StringLength(N->getRawStringLength()),
StringLengthExp(N->getRawStringLengthExp()),
SizeInBits(N->getSizeInBits()), AlignInBits(N->getAlignInBits()),
Encoding(N->getEncoding()) {}
bool isKeyOf(const DIStringType *RHS) const {
return Tag == RHS->getTag() && Name == RHS->getRawName() &&
SizeInBits == RHS->getSizeInBits() &&
AlignInBits == RHS->getAlignInBits() &&
Encoding == RHS->getEncoding();
}
unsigned getHashValue() const { return hash_combine(Tag, Name, Encoding); }
};
template <> struct MDNodeKeyImpl<DIDerivedType> {
unsigned Tag;
MDString *Name;
Metadata *File;
unsigned Line;
Metadata *Scope;
Metadata *BaseType;
uint64_t SizeInBits;
uint64_t OffsetInBits;
uint32_t AlignInBits;
Optional<unsigned> DWARFAddressSpace;
unsigned Flags;
Metadata *ExtraData;
MDNodeKeyImpl(unsigned Tag, MDString *Name, Metadata *File, unsigned Line,
Metadata *Scope, Metadata *BaseType, uint64_t SizeInBits,
uint32_t AlignInBits, uint64_t OffsetInBits,
Optional<unsigned> DWARFAddressSpace, unsigned Flags,
Metadata *ExtraData)
: Tag(Tag), Name(Name), File(File), Line(Line), Scope(Scope),
BaseType(BaseType), SizeInBits(SizeInBits), OffsetInBits(OffsetInBits),
AlignInBits(AlignInBits), DWARFAddressSpace(DWARFAddressSpace),
Flags(Flags), ExtraData(ExtraData) {}
MDNodeKeyImpl(const DIDerivedType *N)
: Tag(N->getTag()), Name(N->getRawName()), File(N->getRawFile()),
Line(N->getLine()), Scope(N->getRawScope()),
BaseType(N->getRawBaseType()), SizeInBits(N->getSizeInBits()),
OffsetInBits(N->getOffsetInBits()), AlignInBits(N->getAlignInBits()),
DWARFAddressSpace(N->getDWARFAddressSpace()), Flags(N->getFlags()),
ExtraData(N->getRawExtraData()) {}
bool isKeyOf(const DIDerivedType *RHS) const {
return Tag == RHS->getTag() && Name == RHS->getRawName() &&
File == RHS->getRawFile() && Line == RHS->getLine() &&
Scope == RHS->getRawScope() && BaseType == RHS->getRawBaseType() &&
SizeInBits == RHS->getSizeInBits() &&
AlignInBits == RHS->getAlignInBits() &&
OffsetInBits == RHS->getOffsetInBits() &&
DWARFAddressSpace == RHS->getDWARFAddressSpace() &&
Flags == RHS->getFlags() &&
ExtraData == RHS->getRawExtraData();
}
unsigned getHashValue() const {
// If this is a member inside an ODR type, only hash the type and the name.
// Otherwise the hash will be stronger than
// MDNodeSubsetEqualImpl::isODRMember().
if (Tag == dwarf::DW_TAG_member && Name)
if (auto *CT = dyn_cast_or_null<DICompositeType>(Scope))
if (CT->getRawIdentifier())
return hash_combine(Name, Scope);
// Intentionally computes the hash on a subset of the operands for
// performance reason. The subset has to be significant enough to avoid
// collision "most of the time". There is no correctness issue in case of
// collision because of the full check above.
return hash_combine(Tag, Name, File, Line, Scope, BaseType, Flags);
}
};
template <> struct MDNodeSubsetEqualImpl<DIDerivedType> {
using KeyTy = MDNodeKeyImpl<DIDerivedType>;
static bool isSubsetEqual(const KeyTy &LHS, const DIDerivedType *RHS) {
return isODRMember(LHS.Tag, LHS.Scope, LHS.Name, RHS);
}
static bool isSubsetEqual(const DIDerivedType *LHS, const DIDerivedType *RHS) {
return isODRMember(LHS->getTag(), LHS->getRawScope(), LHS->getRawName(),
RHS);
}
/// Subprograms compare equal if they declare the same function in an ODR
/// type.
static bool isODRMember(unsigned Tag, const Metadata *Scope,
const MDString *Name, const DIDerivedType *RHS) {
// Check whether the LHS is eligible.
if (Tag != dwarf::DW_TAG_member || !Name)
return false;
auto *CT = dyn_cast_or_null<DICompositeType>(Scope);
if (!CT || !CT->getRawIdentifier())
return false;
// Compare to the RHS.
return Tag == RHS->getTag() && Name == RHS->getRawName() &&
Scope == RHS->getRawScope();
}
};
template <> struct MDNodeKeyImpl<DICompositeType> {
unsigned Tag;
MDString *Name;
Metadata *File;
unsigned Line;
Metadata *Scope;
Metadata *BaseType;
uint64_t SizeInBits;
uint64_t OffsetInBits;
uint32_t AlignInBits;
unsigned Flags;
Metadata *Elements;
unsigned RuntimeLang;
Metadata *VTableHolder;
Metadata *TemplateParams;
MDString *Identifier;
Metadata *Discriminator;
Metadata *DataLocation;
Metadata *Associated;
Metadata *Allocated;
MDNodeKeyImpl(unsigned Tag, MDString *Name, Metadata *File, unsigned Line,
Metadata *Scope, Metadata *BaseType, uint64_t SizeInBits,
uint32_t AlignInBits, uint64_t OffsetInBits, unsigned Flags,
Metadata *Elements, unsigned RuntimeLang,
Metadata *VTableHolder, Metadata *TemplateParams,
MDString *Identifier, Metadata *Discriminator,
Metadata *DataLocation, Metadata *Associated,
Metadata *Allocated)
: Tag(Tag), Name(Name), File(File), Line(Line), Scope(Scope),
BaseType(BaseType), SizeInBits(SizeInBits), OffsetInBits(OffsetInBits),
AlignInBits(AlignInBits), Flags(Flags), Elements(Elements),
RuntimeLang(RuntimeLang), VTableHolder(VTableHolder),
TemplateParams(TemplateParams), Identifier(Identifier),
Discriminator(Discriminator), DataLocation(DataLocation),
Associated(Associated), Allocated(Allocated) {}
MDNodeKeyImpl(const DICompositeType *N)
: Tag(N->getTag()), Name(N->getRawName()), File(N->getRawFile()),
Line(N->getLine()), Scope(N->getRawScope()),
BaseType(N->getRawBaseType()), SizeInBits(N->getSizeInBits()),
OffsetInBits(N->getOffsetInBits()), AlignInBits(N->getAlignInBits()),
Flags(N->getFlags()), Elements(N->getRawElements()),
RuntimeLang(N->getRuntimeLang()), VTableHolder(N->getRawVTableHolder()),
TemplateParams(N->getRawTemplateParams()),
Identifier(N->getRawIdentifier()),
Discriminator(N->getRawDiscriminator()),
DataLocation(N->getRawDataLocation()),
Associated(N->getRawAssociated()), Allocated(N->getRawAllocated()) {}
bool isKeyOf(const DICompositeType *RHS) const {
return Tag == RHS->getTag() && Name == RHS->getRawName() &&
File == RHS->getRawFile() && Line == RHS->getLine() &&
Scope == RHS->getRawScope() && BaseType == RHS->getRawBaseType() &&
SizeInBits == RHS->getSizeInBits() &&
AlignInBits == RHS->getAlignInBits() &&
OffsetInBits == RHS->getOffsetInBits() && Flags == RHS->getFlags() &&
Elements == RHS->getRawElements() &&
RuntimeLang == RHS->getRuntimeLang() &&
VTableHolder == RHS->getRawVTableHolder() &&
TemplateParams == RHS->getRawTemplateParams() &&
Identifier == RHS->getRawIdentifier() &&
Discriminator == RHS->getRawDiscriminator() &&
DataLocation == RHS->getRawDataLocation() &&
Associated == RHS->getRawAssociated() &&
Allocated == RHS->getRawAllocated();
}
unsigned getHashValue() const {
// Intentionally computes the hash on a subset of the operands for
// performance reason. The subset has to be significant enough to avoid
// collision "most of the time". There is no correctness issue in case of
// collision because of the full check above.
return hash_combine(Name, File, Line, BaseType, Scope, Elements,
TemplateParams);
}
};
template <> struct MDNodeKeyImpl<DISubroutineType> {
unsigned Flags;
uint8_t CC;
Metadata *TypeArray;
MDNodeKeyImpl(unsigned Flags, uint8_t CC, Metadata *TypeArray)
: Flags(Flags), CC(CC), TypeArray(TypeArray) {}
MDNodeKeyImpl(const DISubroutineType *N)
: Flags(N->getFlags()), CC(N->getCC()), TypeArray(N->getRawTypeArray()) {}
bool isKeyOf(const DISubroutineType *RHS) const {
return Flags == RHS->getFlags() && CC == RHS->getCC() &&
TypeArray == RHS->getRawTypeArray();
}
unsigned getHashValue() const { return hash_combine(Flags, CC, TypeArray); }
};
template <> struct MDNodeKeyImpl<DIFile> {
MDString *Filename;
MDString *Directory;
Optional<DIFile::ChecksumInfo<MDString *>> Checksum;
Optional<MDString *> Source;
MDNodeKeyImpl(MDString *Filename, MDString *Directory,
Optional<DIFile::ChecksumInfo<MDString *>> Checksum,
Optional<MDString *> Source)
: Filename(Filename), Directory(Directory), Checksum(Checksum),
Source(Source) {}
MDNodeKeyImpl(const DIFile *N)
: Filename(N->getRawFilename()), Directory(N->getRawDirectory()),
Checksum(N->getRawChecksum()), Source(N->getRawSource()) {}
bool isKeyOf(const DIFile *RHS) const {
return Filename == RHS->getRawFilename() &&
Directory == RHS->getRawDirectory() &&
Checksum == RHS->getRawChecksum() &&
Source == RHS->getRawSource();
}
unsigned getHashValue() const {
return hash_combine(
Filename, Directory, Checksum ? Checksum->Kind : 0,
Checksum ? Checksum->Value : nullptr, Source.getValueOr(nullptr));
}
};
template <> struct MDNodeKeyImpl<DISubprogram> {
Metadata *Scope;
MDString *Name;
MDString *LinkageName;
Metadata *File;
unsigned Line;
Metadata *Type;
unsigned ScopeLine;
Metadata *ContainingType;
unsigned VirtualIndex;
int ThisAdjustment;
unsigned Flags;
unsigned SPFlags;
Metadata *Unit;
Metadata *TemplateParams;
Metadata *Declaration;
Metadata *RetainedNodes;
Metadata *ThrownTypes;
MDNodeKeyImpl(Metadata *Scope, MDString *Name, MDString *LinkageName,
Metadata *File, unsigned Line, Metadata *Type,
unsigned ScopeLine, Metadata *ContainingType,
unsigned VirtualIndex, int ThisAdjustment, unsigned Flags,
unsigned SPFlags, Metadata *Unit, Metadata *TemplateParams,
Metadata *Declaration, Metadata *RetainedNodes,
Metadata *ThrownTypes)
: Scope(Scope), Name(Name), LinkageName(LinkageName), File(File),
Line(Line), Type(Type), ScopeLine(ScopeLine),
ContainingType(ContainingType), VirtualIndex(VirtualIndex),
ThisAdjustment(ThisAdjustment), Flags(Flags), SPFlags(SPFlags),
Unit(Unit), TemplateParams(TemplateParams), Declaration(Declaration),
RetainedNodes(RetainedNodes), ThrownTypes(ThrownTypes) {}
MDNodeKeyImpl(const DISubprogram *N)
: Scope(N->getRawScope()), Name(N->getRawName()),
LinkageName(N->getRawLinkageName()), File(N->getRawFile()),
Line(N->getLine()), Type(N->getRawType()), ScopeLine(N->getScopeLine()),
ContainingType(N->getRawContainingType()),
VirtualIndex(N->getVirtualIndex()),
ThisAdjustment(N->getThisAdjustment()), Flags(N->getFlags()),
SPFlags(N->getSPFlags()), Unit(N->getRawUnit()),
TemplateParams(N->getRawTemplateParams()),
Declaration(N->getRawDeclaration()),
RetainedNodes(N->getRawRetainedNodes()),
ThrownTypes(N->getRawThrownTypes()) {}
bool isKeyOf(const DISubprogram *RHS) const {
return Scope == RHS->getRawScope() && Name == RHS->getRawName() &&
LinkageName == RHS->getRawLinkageName() &&
File == RHS->getRawFile() && Line == RHS->getLine() &&
Type == RHS->getRawType() && ScopeLine == RHS->getScopeLine() &&
ContainingType == RHS->getRawContainingType() &&
VirtualIndex == RHS->getVirtualIndex() &&
ThisAdjustment == RHS->getThisAdjustment() &&
Flags == RHS->getFlags() && SPFlags == RHS->getSPFlags() &&
Unit == RHS->getUnit() &&
TemplateParams == RHS->getRawTemplateParams() &&
Declaration == RHS->getRawDeclaration() &&
RetainedNodes == RHS->getRawRetainedNodes() &&
ThrownTypes == RHS->getRawThrownTypes();
}
bool isDefinition() const { return SPFlags & DISubprogram::SPFlagDefinition; }
unsigned getHashValue() const {
// If this is a declaration inside an ODR type, only hash the type and the
// name. Otherwise the hash will be stronger than
// MDNodeSubsetEqualImpl::isDeclarationOfODRMember().
if (!isDefinition() && LinkageName)
if (auto *CT = dyn_cast_or_null<DICompositeType>(Scope))
if (CT->getRawIdentifier())
return hash_combine(LinkageName, Scope);
// Intentionally computes the hash on a subset of the operands for
// performance reason. The subset has to be significant enough to avoid
// collision "most of the time". There is no correctness issue in case of
// collision because of the full check above.
return hash_combine(Name, Scope, File, Type, Line);
}
};
template <> struct MDNodeSubsetEqualImpl<DISubprogram> {
using KeyTy = MDNodeKeyImpl<DISubprogram>;
static bool isSubsetEqual(const KeyTy &LHS, const DISubprogram *RHS) {
return isDeclarationOfODRMember(LHS.isDefinition(), LHS.Scope,
LHS.LinkageName, LHS.TemplateParams, RHS);
}
static bool isSubsetEqual(const DISubprogram *LHS, const DISubprogram *RHS) {
return isDeclarationOfODRMember(LHS->isDefinition(), LHS->getRawScope(),
LHS->getRawLinkageName(),
LHS->getRawTemplateParams(), RHS);
}
/// Subprograms compare equal if they declare the same function in an ODR
/// type.
static bool isDeclarationOfODRMember(bool IsDefinition, const Metadata *Scope,
const MDString *LinkageName,
const Metadata *TemplateParams,
const DISubprogram *RHS) {
// Check whether the LHS is eligible.
if (IsDefinition || !Scope || !LinkageName)
return false;
auto *CT = dyn_cast_or_null<DICompositeType>(Scope);
if (!CT || !CT->getRawIdentifier())
return false;
// Compare to the RHS.
// FIXME: We need to compare template parameters here to avoid incorrect
// collisions in mapMetadata when RF_MoveDistinctMDs and a ODR-DISubprogram
// has a non-ODR template parameter (i.e., a DICompositeType that does not
// have an identifier). Eventually we should decouple ODR logic from
// uniquing logic.
return IsDefinition == RHS->isDefinition() && Scope == RHS->getRawScope() &&
LinkageName == RHS->getRawLinkageName() &&
TemplateParams == RHS->getRawTemplateParams();
}
};
template <> struct MDNodeKeyImpl<DILexicalBlock> {
Metadata *Scope;
Metadata *File;
unsigned Line;
unsigned Column;
MDNodeKeyImpl(Metadata *Scope, Metadata *File, unsigned Line, unsigned Column)
: Scope(Scope), File(File), Line(Line), Column(Column) {}
MDNodeKeyImpl(const DILexicalBlock *N)
: Scope(N->getRawScope()), File(N->getRawFile()), Line(N->getLine()),
Column(N->getColumn()) {}
bool isKeyOf(const DILexicalBlock *RHS) const {
return Scope == RHS->getRawScope() && File == RHS->getRawFile() &&
Line == RHS->getLine() && Column == RHS->getColumn();
}
unsigned getHashValue() const {
return hash_combine(Scope, File, Line, Column);
}
};
template <> struct MDNodeKeyImpl<DILexicalBlockFile> {
Metadata *Scope;
Metadata *File;
unsigned Discriminator;
MDNodeKeyImpl(Metadata *Scope, Metadata *File, unsigned Discriminator)
: Scope(Scope), File(File), Discriminator(Discriminator) {}
MDNodeKeyImpl(const DILexicalBlockFile *N)
: Scope(N->getRawScope()), File(N->getRawFile()),
Discriminator(N->getDiscriminator()) {}
bool isKeyOf(const DILexicalBlockFile *RHS) const {
return Scope == RHS->getRawScope() && File == RHS->getRawFile() &&
Discriminator == RHS->getDiscriminator();
}
unsigned getHashValue() const {
return hash_combine(Scope, File, Discriminator);
}
};
template <> struct MDNodeKeyImpl<DINamespace> {
Metadata *Scope;
MDString *Name;
bool ExportSymbols;
MDNodeKeyImpl(Metadata *Scope, MDString *Name, bool ExportSymbols)
: Scope(Scope), Name(Name), ExportSymbols(ExportSymbols) {}
MDNodeKeyImpl(const DINamespace *N)
: Scope(N->getRawScope()), Name(N->getRawName()),
ExportSymbols(N->getExportSymbols()) {}
bool isKeyOf(const DINamespace *RHS) const {
return Scope == RHS->getRawScope() && Name == RHS->getRawName() &&
ExportSymbols == RHS->getExportSymbols();
}
unsigned getHashValue() const {
return hash_combine(Scope, Name);
}
};
template <> struct MDNodeKeyImpl<DICommonBlock> {
Metadata *Scope;
Metadata *Decl;
MDString *Name;
Metadata *File;
unsigned LineNo;
MDNodeKeyImpl(Metadata *Scope, Metadata *Decl, MDString *Name,
Metadata *File, unsigned LineNo)
: Scope(Scope), Decl(Decl), Name(Name), File(File), LineNo(LineNo) {}
MDNodeKeyImpl(const DICommonBlock *N)
: Scope(N->getRawScope()), Decl(N->getRawDecl()), Name(N->getRawName()),
File(N->getRawFile()), LineNo(N->getLineNo()) {}
bool isKeyOf(const DICommonBlock *RHS) const {
return Scope == RHS->getRawScope() && Decl == RHS->getRawDecl() &&
Name == RHS->getRawName() && File == RHS->getRawFile() &&
LineNo == RHS->getLineNo();
}
unsigned getHashValue() const {
return hash_combine(Scope, Decl, Name, File, LineNo);
}
};
template <> struct MDNodeKeyImpl<DIModule> {
Metadata *File;
Metadata *Scope;
MDString *Name;
MDString *ConfigurationMacros;
MDString *IncludePath;
MDString *APINotesFile;
unsigned LineNo;
MDNodeKeyImpl(Metadata *File, Metadata *Scope, MDString *Name,
MDString *ConfigurationMacros, MDString *IncludePath,
MDString *APINotesFile, unsigned LineNo)
: File(File), Scope(Scope), Name(Name),
ConfigurationMacros(ConfigurationMacros), IncludePath(IncludePath),
APINotesFile(APINotesFile), LineNo(LineNo) {}
MDNodeKeyImpl(const DIModule *N)
: File(N->getRawFile()), Scope(N->getRawScope()), Name(N->getRawName()),
ConfigurationMacros(N->getRawConfigurationMacros()),
IncludePath(N->getRawIncludePath()),
APINotesFile(N->getRawAPINotesFile()), LineNo(N->getLineNo()) {}
bool isKeyOf(const DIModule *RHS) const {
return Scope == RHS->getRawScope() && Name == RHS->getRawName() &&
ConfigurationMacros == RHS->getRawConfigurationMacros() &&
IncludePath == RHS->getRawIncludePath() &&
APINotesFile == RHS->getRawAPINotesFile() &&
File == RHS->getRawFile() && LineNo == RHS->getLineNo();
}
unsigned getHashValue() const {
return hash_combine(Scope, Name, ConfigurationMacros, IncludePath);
}
};
template <> struct MDNodeKeyImpl<DITemplateTypeParameter> {
MDString *Name;
Metadata *Type;
bool IsDefault;
MDNodeKeyImpl(MDString *Name, Metadata *Type, bool IsDefault)
: Name(Name), Type(Type), IsDefault(IsDefault) {}
MDNodeKeyImpl(const DITemplateTypeParameter *N)
: Name(N->getRawName()), Type(N->getRawType()),
IsDefault(N->isDefault()) {}
bool isKeyOf(const DITemplateTypeParameter *RHS) const {
return Name == RHS->getRawName() && Type == RHS->getRawType() &&
IsDefault == RHS->isDefault();
}
unsigned getHashValue() const { return hash_combine(Name, Type, IsDefault); }
};
template <> struct MDNodeKeyImpl<DITemplateValueParameter> {
unsigned Tag;
MDString *Name;
Metadata *Type;
bool IsDefault;
Metadata *Value;
MDNodeKeyImpl(unsigned Tag, MDString *Name, Metadata *Type, bool IsDefault,
Metadata *Value)
: Tag(Tag), Name(Name), Type(Type), IsDefault(IsDefault), Value(Value) {}
MDNodeKeyImpl(const DITemplateValueParameter *N)
: Tag(N->getTag()), Name(N->getRawName()), Type(N->getRawType()),
IsDefault(N->isDefault()), Value(N->getValue()) {}
bool isKeyOf(const DITemplateValueParameter *RHS) const {
return Tag == RHS->getTag() && Name == RHS->getRawName() &&
Type == RHS->getRawType() && IsDefault == RHS->isDefault() &&
Value == RHS->getValue();
}
unsigned getHashValue() const {
return hash_combine(Tag, Name, Type, IsDefault, Value);
}
};
template <> struct MDNodeKeyImpl<DIGlobalVariable> {
Metadata *Scope;
MDString *Name;
MDString *LinkageName;
Metadata *File;
unsigned Line;
Metadata *Type;
bool IsLocalToUnit;
bool IsDefinition;
Metadata *StaticDataMemberDeclaration;
Metadata *TemplateParams;
uint32_t AlignInBits;
MDNodeKeyImpl(Metadata *Scope, MDString *Name, MDString *LinkageName,
Metadata *File, unsigned Line, Metadata *Type,
bool IsLocalToUnit, bool IsDefinition,
Metadata *StaticDataMemberDeclaration, Metadata *TemplateParams,
uint32_t AlignInBits)
: Scope(Scope), Name(Name), LinkageName(LinkageName), File(File),
Line(Line), Type(Type), IsLocalToUnit(IsLocalToUnit),
IsDefinition(IsDefinition),
StaticDataMemberDeclaration(StaticDataMemberDeclaration),
TemplateParams(TemplateParams), AlignInBits(AlignInBits) {}
MDNodeKeyImpl(const DIGlobalVariable *N)
: Scope(N->getRawScope()), Name(N->getRawName()),
LinkageName(N->getRawLinkageName()), File(N->getRawFile()),
Line(N->getLine()), Type(N->getRawType()),
IsLocalToUnit(N->isLocalToUnit()), IsDefinition(N->isDefinition()),
StaticDataMemberDeclaration(N->getRawStaticDataMemberDeclaration()),
TemplateParams(N->getRawTemplateParams()),
AlignInBits(N->getAlignInBits()) {}
bool isKeyOf(const DIGlobalVariable *RHS) const {
return Scope == RHS->getRawScope() && Name == RHS->getRawName() &&
LinkageName == RHS->getRawLinkageName() &&
File == RHS->getRawFile() && Line == RHS->getLine() &&
Type == RHS->getRawType() && IsLocalToUnit == RHS->isLocalToUnit() &&
IsDefinition == RHS->isDefinition() &&
StaticDataMemberDeclaration ==
RHS->getRawStaticDataMemberDeclaration() &&
TemplateParams == RHS->getRawTemplateParams() &&
AlignInBits == RHS->getAlignInBits();
}
unsigned getHashValue() const {
// We do not use AlignInBits in hashing function here on purpose:
// in most cases this param for local variable is zero (for function param
// it is always zero). This leads to lots of hash collisions and errors on
// cases with lots of similar variables.
// clang/test/CodeGen/debug-info-257-args.c is an example of this problem,
// generated IR is random for each run and test fails with Align included.
// TODO: make hashing work fine with such situations
return hash_combine(Scope, Name, LinkageName, File, Line, Type,
IsLocalToUnit, IsDefinition, /* AlignInBits, */
StaticDataMemberDeclaration);
}
};
template <> struct MDNodeKeyImpl<DILocalVariable> {
Metadata *Scope;
MDString *Name;
Metadata *File;
unsigned Line;
Metadata *Type;
unsigned Arg;
unsigned Flags;
uint32_t AlignInBits;
MDNodeKeyImpl(Metadata *Scope, MDString *Name, Metadata *File, unsigned Line,
Metadata *Type, unsigned Arg, unsigned Flags,
uint32_t AlignInBits)
: Scope(Scope), Name(Name), File(File), Line(Line), Type(Type), Arg(Arg),
Flags(Flags), AlignInBits(AlignInBits) {}
MDNodeKeyImpl(const DILocalVariable *N)
: Scope(N->getRawScope()), Name(N->getRawName()), File(N->getRawFile()),
Line(N->getLine()), Type(N->getRawType()), Arg(N->getArg()),
Flags(N->getFlags()), AlignInBits(N->getAlignInBits()) {}
bool isKeyOf(const DILocalVariable *RHS) const {
return Scope == RHS->getRawScope() && Name == RHS->getRawName() &&
File == RHS->getRawFile() && Line == RHS->getLine() &&
Type == RHS->getRawType() && Arg == RHS->getArg() &&
Flags == RHS->getFlags() && AlignInBits == RHS->getAlignInBits();
}
unsigned getHashValue() const {
// We do not use AlignInBits in hashing function here on purpose:
// in most cases this param for local variable is zero (for function param
// it is always zero). This leads to lots of hash collisions and errors on
// cases with lots of similar variables.
// clang/test/CodeGen/debug-info-257-args.c is an example of this problem,
// generated IR is random for each run and test fails with Align included.
// TODO: make hashing work fine with such situations
return hash_combine(Scope, Name, File, Line, Type, Arg, Flags);
}
};
template <> struct MDNodeKeyImpl<DILabel> {
Metadata *Scope;
MDString *Name;
Metadata *File;
unsigned Line;
MDNodeKeyImpl(Metadata *Scope, MDString *Name, Metadata *File, unsigned Line)
: Scope(Scope), Name(Name), File(File), Line(Line) {}
MDNodeKeyImpl(const DILabel *N)
: Scope(N->getRawScope()), Name(N->getRawName()), File(N->getRawFile()),
Line(N->getLine()) {}
bool isKeyOf(const DILabel *RHS) const {
return Scope == RHS->getRawScope() && Name == RHS->getRawName() &&
File == RHS->getRawFile() && Line == RHS->getLine();
}
/// Using name and line to get hash value. It should already be mostly unique.
unsigned getHashValue() const {
return hash_combine(Scope, Name, Line);
}
};
template <> struct MDNodeKeyImpl<DIExpression> {
ArrayRef<uint64_t> Elements;
MDNodeKeyImpl(ArrayRef<uint64_t> Elements) : Elements(Elements) {}
MDNodeKeyImpl(const DIExpression *N) : Elements(N->getElements()) {}
bool isKeyOf(const DIExpression *RHS) const {
return Elements == RHS->getElements();
}
unsigned getHashValue() const {
return hash_combine_range(Elements.begin(), Elements.end());
}
};
template <> struct MDNodeKeyImpl<DIGlobalVariableExpression> {
Metadata *Variable;
Metadata *Expression;
MDNodeKeyImpl(Metadata *Variable, Metadata *Expression)
: Variable(Variable), Expression(Expression) {}
MDNodeKeyImpl(const DIGlobalVariableExpression *N)
: Variable(N->getRawVariable()), Expression(N->getRawExpression()) {}
bool isKeyOf(const DIGlobalVariableExpression *RHS) const {
return Variable == RHS->getRawVariable() &&
Expression == RHS->getRawExpression();
}
unsigned getHashValue() const { return hash_combine(Variable, Expression); }
};
template <> struct MDNodeKeyImpl<DIObjCProperty> {
MDString *Name;
Metadata *File;
unsigned Line;
MDString *GetterName;
MDString *SetterName;
unsigned Attributes;
Metadata *Type;
MDNodeKeyImpl(MDString *Name, Metadata *File, unsigned Line,
MDString *GetterName, MDString *SetterName, unsigned Attributes,
Metadata *Type)
: Name(Name), File(File), Line(Line), GetterName(GetterName),
SetterName(SetterName), Attributes(Attributes), Type(Type) {}
MDNodeKeyImpl(const DIObjCProperty *N)
: Name(N->getRawName()), File(N->getRawFile()), Line(N->getLine()),
GetterName(N->getRawGetterName()), SetterName(N->getRawSetterName()),
Attributes(N->getAttributes()), Type(N->getRawType()) {}
bool isKeyOf(const DIObjCProperty *RHS) const {
return Name == RHS->getRawName() && File == RHS->getRawFile() &&
Line == RHS->getLine() && GetterName == RHS->getRawGetterName() &&
SetterName == RHS->getRawSetterName() &&
Attributes == RHS->getAttributes() && Type == RHS->getRawType();
}
unsigned getHashValue() const {
return hash_combine(Name, File, Line, GetterName, SetterName, Attributes,
Type);
}
};
template <> struct MDNodeKeyImpl<DIImportedEntity> {
unsigned Tag;
Metadata *Scope;
Metadata *Entity;
Metadata *File;
unsigned Line;
MDString *Name;
MDNodeKeyImpl(unsigned Tag, Metadata *Scope, Metadata *Entity, Metadata *File,
unsigned Line, MDString *Name)
: Tag(Tag), Scope(Scope), Entity(Entity), File(File), Line(Line),
Name(Name) {}
MDNodeKeyImpl(const DIImportedEntity *N)
: Tag(N->getTag()), Scope(N->getRawScope()), Entity(N->getRawEntity()),
File(N->getRawFile()), Line(N->getLine()), Name(N->getRawName()) {}
bool isKeyOf(const DIImportedEntity *RHS) const {
return Tag == RHS->getTag() && Scope == RHS->getRawScope() &&
Entity == RHS->getRawEntity() && File == RHS->getFile() &&
Line == RHS->getLine() && Name == RHS->getRawName();
}
unsigned getHashValue() const {
return hash_combine(Tag, Scope, Entity, File, Line, Name);
}
};
template <> struct MDNodeKeyImpl<DIMacro> {
unsigned MIType;
unsigned Line;
MDString *Name;
MDString *Value;
MDNodeKeyImpl(unsigned MIType, unsigned Line, MDString *Name, MDString *Value)
: MIType(MIType), Line(Line), Name(Name), Value(Value) {}
MDNodeKeyImpl(const DIMacro *N)
: MIType(N->getMacinfoType()), Line(N->getLine()), Name(N->getRawName()),
Value(N->getRawValue()) {}
bool isKeyOf(const DIMacro *RHS) const {
return MIType == RHS->getMacinfoType() && Line == RHS->getLine() &&
Name == RHS->getRawName() && Value == RHS->getRawValue();
}
unsigned getHashValue() const {
return hash_combine(MIType, Line, Name, Value);
}
};
template <> struct MDNodeKeyImpl<DIMacroFile> {
unsigned MIType;
unsigned Line;
Metadata *File;
Metadata *Elements;
MDNodeKeyImpl(unsigned MIType, unsigned Line, Metadata *File,
Metadata *Elements)
: MIType(MIType), Line(Line), File(File), Elements(Elements) {}
MDNodeKeyImpl(const DIMacroFile *N)
: MIType(N->getMacinfoType()), Line(N->getLine()), File(N->getRawFile()),
Elements(N->getRawElements()) {}
bool isKeyOf(const DIMacroFile *RHS) const {
return MIType == RHS->getMacinfoType() && Line == RHS->getLine() &&
File == RHS->getRawFile() && Elements == RHS->getRawElements();
}
unsigned getHashValue() const {
return hash_combine(MIType, Line, File, Elements);
}
};
/// DenseMapInfo for MDNode subclasses.
template <class NodeTy> struct MDNodeInfo {
using KeyTy = MDNodeKeyImpl<NodeTy>;
using SubsetEqualTy = MDNodeSubsetEqualImpl<NodeTy>;
static inline NodeTy *getEmptyKey() {
return DenseMapInfo<NodeTy *>::getEmptyKey();
}
static inline NodeTy *getTombstoneKey() {
return DenseMapInfo<NodeTy *>::getTombstoneKey();
}
static unsigned getHashValue(const KeyTy &Key) { return Key.getHashValue(); }
static unsigned getHashValue(const NodeTy *N) {
return KeyTy(N).getHashValue();
}
static bool isEqual(const KeyTy &LHS, const NodeTy *RHS) {
if (RHS == getEmptyKey() || RHS == getTombstoneKey())
return false;
return SubsetEqualTy::isSubsetEqual(LHS, RHS) || LHS.isKeyOf(RHS);
}
static bool isEqual(const NodeTy *LHS, const NodeTy *RHS) {
if (LHS == RHS)
return true;
if (RHS == getEmptyKey() || RHS == getTombstoneKey())
return false;
return SubsetEqualTy::isSubsetEqual(LHS, RHS);
}
};
#define HANDLE_MDNODE_LEAF(CLASS) using CLASS##Info = MDNodeInfo<CLASS>;
#include "llvm/IR/Metadata.def"
/// Map-like storage for metadata attachments.
class MDAttachmentMap {
SmallVector<std::pair<unsigned, TrackingMDNodeRef>, 2> Attachments;
public:
bool empty() const { return Attachments.empty(); }
size_t size() const { return Attachments.size(); }
/// Get a particular attachment (if any).
MDNode *lookup(unsigned ID) const;
/// Set an attachment to a particular node.
///
/// Set the \c ID attachment to \c MD, replacing the current attachment at \c
/// ID (if anyway).
void set(unsigned ID, MDNode &MD);
/// Remove an attachment.
///
/// Remove the attachment at \c ID, if any.
bool erase(unsigned ID);
/// Copy out all the attachments.
///
/// Copies all the current attachments into \c Result, sorting by attachment
/// ID. This function does \em not clear \c Result.
void getAll(SmallVectorImpl<std::pair<unsigned, MDNode *>> &Result) const;
/// Erase matching attachments.
///
/// Erases all attachments matching the \c shouldRemove predicate.
template <class PredTy> void remove_if(PredTy shouldRemove) {
Attachments.erase(llvm::remove_if(Attachments, shouldRemove),
Attachments.end());
}
};
/// Multimap-like storage for metadata attachments for globals. This differs
/// from MDAttachmentMap in that it allows multiple attachments per metadata
/// kind.
class MDGlobalAttachmentMap {
struct Attachment {
unsigned MDKind;
TrackingMDNodeRef Node;
};
SmallVector<Attachment, 1> Attachments;
public:
bool empty() const { return Attachments.empty(); }
/// Appends all attachments with the given ID to \c Result in insertion order.
/// If the global has no attachments with the given ID, or if ID is invalid,
/// leaves Result unchanged.
void get(unsigned ID, SmallVectorImpl<MDNode *> &Result) const;
/// Returns the first attachment with the given ID or nullptr if no such
/// attachment exists.
MDNode *lookup(unsigned ID) const;
void insert(unsigned ID, MDNode &MD);
bool erase(unsigned ID);
/// Appends all attachments for the global to \c Result, sorting by attachment
/// ID. Attachments with the same ID appear in insertion order. This function
/// does \em not clear \c Result.
void getAll(SmallVectorImpl<std::pair<unsigned, MDNode *>> &Result) const;
};
class LLVMContextImpl {
public:
/// OwnedModules - The set of modules instantiated in this context, and which
/// will be automatically deleted if this context is deleted.
SmallPtrSet<Module*, 4> OwnedModules;
LLVMContext::InlineAsmDiagHandlerTy InlineAsmDiagHandler = nullptr;
void *InlineAsmDiagContext = nullptr;
/// The main remark streamer used by all the other streamers (e.g. IR, MIR,
/// frontends, etc.). This should only be used by the specific streamers, and
/// never directly.
std::unique_ptr<remarks::RemarkStreamer> MainRemarkStreamer;
std::unique_ptr<DiagnosticHandler> DiagHandler;
bool RespectDiagnosticFilters = false;
bool DiagnosticsHotnessRequested = false;
uint64_t DiagnosticsHotnessThreshold = 0;
/// The specialized remark streamer used by LLVM's OptimizationRemarkEmitter.
std::unique_ptr<LLVMRemarkStreamer> LLVMRS;
LLVMContext::YieldCallbackTy YieldCallback = nullptr;
void *YieldOpaqueHandle = nullptr;
using IntMapTy =
DenseMap<APInt, std::unique_ptr<ConstantInt>, DenseMapAPIntKeyInfo>;
IntMapTy IntConstants;
using FPMapTy =
DenseMap<APFloat, std::unique_ptr<ConstantFP>, DenseMapAPFloatKeyInfo>;
FPMapTy FPConstants;
FoldingSet<AttributeImpl> AttrsSet;
FoldingSet<AttributeListImpl> AttrsLists;
FoldingSet<AttributeSetNode> AttrsSetNodes;
StringMap<MDString, BumpPtrAllocator> MDStringCache;
DenseMap<Value *, ValueAsMetadata *> ValuesAsMetadata;
DenseMap<Metadata *, MetadataAsValue *> MetadataAsValues;
DenseMap<const Value*, ValueName*> ValueNames;
#define HANDLE_MDNODE_LEAF_UNIQUABLE(CLASS) \
DenseSet<CLASS *, CLASS##Info> CLASS##s;
#include "llvm/IR/Metadata.def"
// Optional map for looking up composite types by identifier.
Optional<DenseMap<const MDString *, DICompositeType *>> DITypeMap;
// MDNodes may be uniqued or not uniqued. When they're not uniqued, they
// aren't in the MDNodeSet, but they're still shared between objects, so no
// one object can destroy them. Keep track of them here so we can delete
// them on context teardown.
std::vector<MDNode *> DistinctMDNodes;
DenseMap<Type *, std::unique_ptr<ConstantAggregateZero>> CAZConstants;
using ArrayConstantsTy = ConstantUniqueMap<ConstantArray>;
ArrayConstantsTy ArrayConstants;
using StructConstantsTy = ConstantUniqueMap<ConstantStruct>;
StructConstantsTy StructConstants;
using VectorConstantsTy = ConstantUniqueMap<ConstantVector>;
VectorConstantsTy VectorConstants;
DenseMap<PointerType *, std::unique_ptr<ConstantPointerNull>> CPNConstants;
DenseMap<Type *, std::unique_ptr<UndefValue>> UVConstants;
StringMap<ConstantDataSequential*> CDSConstants;
DenseMap<std::pair<const Function *, const BasicBlock *>, BlockAddress *>
BlockAddresses;
ConstantUniqueMap<ConstantExpr> ExprConstants;
ConstantUniqueMap<InlineAsm> InlineAsms;
ConstantInt *TheTrueVal = nullptr;
ConstantInt *TheFalseVal = nullptr;
std::unique_ptr<ConstantTokenNone> TheNoneToken;
// Basic type instances.
Type VoidTy, LabelTy, HalfTy, BFloatTy, FloatTy, DoubleTy, MetadataTy,
TokenTy;
Type X86_FP80Ty, FP128Ty, PPC_FP128Ty, X86_MMXTy;
IntegerType Int1Ty, Int8Ty, Int16Ty, Int32Ty, Int64Ty, Int128Ty;
BumpPtrAllocator Alloc;
UniqueStringSaver Saver{Alloc};
DenseMap<unsigned, IntegerType*> IntegerTypes;
using FunctionTypeSet = DenseSet<FunctionType *, FunctionTypeKeyInfo>;
FunctionTypeSet FunctionTypes;
using StructTypeSet = DenseSet<StructType *, AnonStructTypeKeyInfo>;
StructTypeSet AnonStructTypes;
StringMap<StructType*> NamedStructTypes;
unsigned NamedStructTypesUniqueID = 0;
DenseMap<std::pair<Type *, uint64_t>, ArrayType*> ArrayTypes;
DenseMap<std::pair<Type *, ElementCount>, VectorType*> VectorTypes;
DenseMap<Type*, PointerType*> PointerTypes; // Pointers in AddrSpace = 0
DenseMap<std::pair<Type*, unsigned>, PointerType*> ASPointerTypes;
/// ValueHandles - This map keeps track of all of the value handles that are
/// watching a Value*. The Value::HasValueHandle bit is used to know
/// whether or not a value has an entry in this map.
using ValueHandlesTy = DenseMap<Value *, ValueHandleBase *>;
ValueHandlesTy ValueHandles;
/// CustomMDKindNames - Map to hold the metadata string to ID mapping.
StringMap<unsigned> CustomMDKindNames;
/// Collection of per-instruction metadata used in this context.
DenseMap<const Instruction *, MDAttachmentMap> InstructionMetadata;
/// Collection of per-GlobalObject metadata used in this context.
DenseMap<const GlobalObject *, MDGlobalAttachmentMap> GlobalObjectMetadata;
/// Collection of per-GlobalObject sections used in this context.
DenseMap<const GlobalObject *, StringRef> GlobalObjectSections;
/// Collection of per-GlobalValue partitions used in this context.
DenseMap<const GlobalValue *, StringRef> GlobalValuePartitions;
/// DiscriminatorTable - This table maps file:line locations to an
/// integer representing the next DWARF path discriminator to assign to
/// instructions in different blocks at the same location.
DenseMap<std::pair<const char *, unsigned>, unsigned> DiscriminatorTable;
/// A set of interned tags for operand bundles. The StringMap maps
/// bundle tags to their IDs.
///
/// \see LLVMContext::getOperandBundleTagID
StringMap<uint32_t> BundleTagCache;
StringMapEntry<uint32_t> *getOrInsertBundleTag(StringRef Tag);
void getOperandBundleTags(SmallVectorImpl<StringRef> &Tags) const;
uint32_t getOperandBundleTagID(StringRef Tag) const;
/// A set of interned synchronization scopes. The StringMap maps
/// synchronization scope names to their respective synchronization scope IDs.
StringMap<SyncScope::ID> SSC;
/// getOrInsertSyncScopeID - Maps synchronization scope name to
/// synchronization scope ID. Every synchronization scope registered with
/// LLVMContext has unique ID except pre-defined ones.
SyncScope::ID getOrInsertSyncScopeID(StringRef SSN);
/// getSyncScopeNames - Populates client supplied SmallVector with
/// synchronization scope names registered with LLVMContext. Synchronization
/// scope names are ordered by increasing synchronization scope IDs.
void getSyncScopeNames(SmallVectorImpl<StringRef> &SSNs) const;
/// Maintain the GC name for each function.
///
/// This saves allocating an additional word in Function for programs which
/// do not use GC (i.e., most programs) at the cost of increased overhead for
/// clients which do use GC.
DenseMap<const Function*, std::string> GCNames;
/// Flag to indicate if Value (other than GlobalValue) retains their name or
/// not.
bool DiscardValueNames = false;
LLVMContextImpl(LLVMContext &C);
~LLVMContextImpl();
/// Destroy the ConstantArrays if they are not used.
void dropTriviallyDeadConstantArrays();
mutable OptPassGate *OPG = nullptr;
/// Access the object which can disable optional passes and individual
/// optimizations at compile time.
OptPassGate &getOptPassGate() const;
/// Set the object which can disable optional passes and individual
/// optimizations at compile time.
///
/// The lifetime of the object must be guaranteed to extend as long as the
/// LLVMContext is used by compilation.
void setOptPassGate(OptPassGate&);
};
} // end namespace llvm
#endif // LLVM_LIB_IR_LLVMCONTEXTIMPL_H
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