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llvm-mirror/lib/IR/LLVMContextImpl.h
Peter Collingbourne a9fbb2813b DebugInfo: New metadata representation for global variables. 
This patch reverses the edge from DIGlobalVariable to GlobalVariable.
This will allow us to more easily preserve debug info metadata when
manipulating global variables.

Fixes PR30362. A program for upgrading test cases is attached to that
bug.

Differential Revision: http://reviews.llvm.org/D20147

llvm-svn: 281284
2016-09-13 01:12:59 +00:00

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42 KiB
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//===-- LLVMContextImpl.h - The LLVMContextImpl opaque class ----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// 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/DenseSet.h"
#include "llvm/ADT/FoldingSet.h"
#include "llvm/ADT/Hashing.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DebugInfoMetadata.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Metadata.h"
#include "llvm/IR/ValueHandle.h"
#include "llvm/Support/Dwarf.h"
#include <vector>
namespace llvm {
class ConstantInt;
class ConstantFP;
class DiagnosticInfoOptimizationRemark;
class DiagnosticInfoOptimizationRemarkMissed;
class DiagnosticInfoOptimizationRemarkAnalysis;
class GCStrategy;
class LLVMContext;
class Type;
class Value;
struct DenseMapAPIntKeyInfo {
static inline APInt getEmptyKey() {
APInt V(nullptr, 0);
V.VAL = 0;
return V;
}
static inline APInt getTombstoneKey() {
APInt V(nullptr, 0);
V.VAL = 1;
return V;
}
static unsigned getHashValue(const APInt &Key) {
return static_cast<unsigned>(hash_value(Key));
}
static bool isEqual(const APInt &LHS, const APInt &RHS) {
return LHS.getBitWidth() == RHS.getBitWidth() && LHS == RHS;
}
};
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;
}
};
/// \brief 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;
template <class NodeTy> struct MDNodeInfo;
/// Configuration point for MDNodeInfo::isEqual().
template <class NodeTy> struct MDNodeSubsetEqualImpl {
typedef MDNodeKeyImpl<NodeTy> KeyTy;
static bool isSubsetEqual(const KeyTy &LHS, const NodeTy *RHS) {
return false;
}
static bool isSubsetEqual(const NodeTy *LHS, const NodeTy *RHS) {
return false;
}
};
/// \brief 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);
}
};
/// \brief DenseMapInfo for DILocation.
template <> struct MDNodeKeyImpl<DILocation> {
unsigned Line;
unsigned Column;
Metadata *Scope;
Metadata *InlinedAt;
MDNodeKeyImpl(unsigned Line, unsigned Column, Metadata *Scope,
Metadata *InlinedAt)
: Line(Line), Column(Column), Scope(Scope), InlinedAt(InlinedAt) {}
MDNodeKeyImpl(const DILocation *L)
: Line(L->getLine()), Column(L->getColumn()), Scope(L->getRawScope()),
InlinedAt(L->getRawInlinedAt()) {}
bool isKeyOf(const DILocation *RHS) const {
return Line == RHS->getLine() && Column == RHS->getColumn() &&
Scope == RHS->getRawScope() && InlinedAt == RHS->getRawInlinedAt();
}
unsigned getHashValue() const {
return hash_combine(Line, Column, Scope, InlinedAt);
}
};
/// \brief 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> {
int64_t Count;
int64_t LowerBound;
MDNodeKeyImpl(int64_t Count, int64_t LowerBound)
: Count(Count), LowerBound(LowerBound) {}
MDNodeKeyImpl(const DISubrange *N)
: Count(N->getCount()), LowerBound(N->getLowerBound()) {}
bool isKeyOf(const DISubrange *RHS) const {
return Count == RHS->getCount() && LowerBound == RHS->getLowerBound();
}
unsigned getHashValue() const { return hash_combine(Count, LowerBound); }
};
template <> struct MDNodeKeyImpl<DIEnumerator> {
int64_t Value;
MDString *Name;
MDNodeKeyImpl(int64_t Value, MDString *Name) : Value(Value), Name(Name) {}
MDNodeKeyImpl(const DIEnumerator *N)
: Value(N->getValue()), Name(N->getRawName()) {}
bool isKeyOf(const DIEnumerator *RHS) const {
return Value == RHS->getValue() && Name == RHS->getRawName();
}
unsigned getHashValue() const { return hash_combine(Value, Name); }
};
template <> struct MDNodeKeyImpl<DIBasicType> {
unsigned Tag;
MDString *Name;
uint64_t SizeInBits;
uint64_t AlignInBits;
unsigned Encoding;
MDNodeKeyImpl(unsigned Tag, MDString *Name, uint64_t SizeInBits,
uint64_t AlignInBits, unsigned Encoding)
: Tag(Tag), Name(Name), SizeInBits(SizeInBits), AlignInBits(AlignInBits),
Encoding(Encoding) {}
MDNodeKeyImpl(const DIBasicType *N)
: Tag(N->getTag()), Name(N->getRawName()), SizeInBits(N->getSizeInBits()),
AlignInBits(N->getAlignInBits()), Encoding(N->getEncoding()) {}
bool isKeyOf(const DIBasicType *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, SizeInBits, AlignInBits, Encoding);
}
};
template <> struct MDNodeKeyImpl<DIDerivedType> {
unsigned Tag;
MDString *Name;
Metadata *File;
unsigned Line;
Metadata *Scope;
Metadata *BaseType;
uint64_t SizeInBits;
uint64_t AlignInBits;
uint64_t OffsetInBits;
unsigned Flags;
Metadata *ExtraData;
MDNodeKeyImpl(unsigned Tag, MDString *Name, Metadata *File, unsigned Line,
Metadata *Scope, Metadata *BaseType, uint64_t SizeInBits,
uint64_t AlignInBits, uint64_t OffsetInBits, unsigned Flags,
Metadata *ExtraData)
: Tag(Tag), Name(Name), File(File), Line(Line), Scope(Scope),
BaseType(BaseType), SizeInBits(SizeInBits), AlignInBits(AlignInBits),
OffsetInBits(OffsetInBits), 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()),
AlignInBits(N->getAlignInBits()), OffsetInBits(N->getOffsetInBits()),
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() && 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> {
typedef MDNodeKeyImpl<DIDerivedType> KeyTy;
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 AlignInBits;
uint64_t OffsetInBits;
unsigned Flags;
Metadata *Elements;
unsigned RuntimeLang;
Metadata *VTableHolder;
Metadata *TemplateParams;
MDString *Identifier;
MDNodeKeyImpl(unsigned Tag, MDString *Name, Metadata *File, unsigned Line,
Metadata *Scope, Metadata *BaseType, uint64_t SizeInBits,
uint64_t AlignInBits, uint64_t OffsetInBits, unsigned Flags,
Metadata *Elements, unsigned RuntimeLang,
Metadata *VTableHolder, Metadata *TemplateParams,
MDString *Identifier)
: Tag(Tag), Name(Name), File(File), Line(Line), Scope(Scope),
BaseType(BaseType), SizeInBits(SizeInBits), AlignInBits(AlignInBits),
OffsetInBits(OffsetInBits), Flags(Flags), Elements(Elements),
RuntimeLang(RuntimeLang), VTableHolder(VTableHolder),
TemplateParams(TemplateParams), Identifier(Identifier) {}
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()),
AlignInBits(N->getAlignInBits()), OffsetInBits(N->getOffsetInBits()),
Flags(N->getFlags()), Elements(N->getRawElements()),
RuntimeLang(N->getRuntimeLang()), VTableHolder(N->getRawVTableHolder()),
TemplateParams(N->getRawTemplateParams()),
Identifier(N->getRawIdentifier()) {}
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();
}
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;
MDNodeKeyImpl(MDString *Filename, MDString *Directory)
: Filename(Filename), Directory(Directory) {}
MDNodeKeyImpl(const DIFile *N)
: Filename(N->getRawFilename()), Directory(N->getRawDirectory()) {}
bool isKeyOf(const DIFile *RHS) const {
return Filename == RHS->getRawFilename() &&
Directory == RHS->getRawDirectory();
}
unsigned getHashValue() const { return hash_combine(Filename, Directory); }
};
template <> struct MDNodeKeyImpl<DISubprogram> {
Metadata *Scope;
MDString *Name;
MDString *LinkageName;
Metadata *File;
unsigned Line;
Metadata *Type;
bool IsLocalToUnit;
bool IsDefinition;
unsigned ScopeLine;
Metadata *ContainingType;
unsigned Virtuality;
unsigned VirtualIndex;
int ThisAdjustment;
unsigned Flags;
bool IsOptimized;
Metadata *Unit;
Metadata *TemplateParams;
Metadata *Declaration;
Metadata *Variables;
MDNodeKeyImpl(Metadata *Scope, MDString *Name, MDString *LinkageName,
Metadata *File, unsigned Line, Metadata *Type,
bool IsLocalToUnit, bool IsDefinition, unsigned ScopeLine,
Metadata *ContainingType, unsigned Virtuality,
unsigned VirtualIndex, int ThisAdjustment, unsigned Flags,
bool IsOptimized, Metadata *Unit, Metadata *TemplateParams,
Metadata *Declaration, Metadata *Variables)
: Scope(Scope), Name(Name), LinkageName(LinkageName), File(File),
Line(Line), Type(Type), IsLocalToUnit(IsLocalToUnit),
IsDefinition(IsDefinition), ScopeLine(ScopeLine),
ContainingType(ContainingType), Virtuality(Virtuality),
VirtualIndex(VirtualIndex), ThisAdjustment(ThisAdjustment),
Flags(Flags), IsOptimized(IsOptimized), Unit(Unit),
TemplateParams(TemplateParams), Declaration(Declaration),
Variables(Variables) {}
MDNodeKeyImpl(const DISubprogram *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()),
ScopeLine(N->getScopeLine()), ContainingType(N->getRawContainingType()),
Virtuality(N->getVirtuality()), VirtualIndex(N->getVirtualIndex()),
ThisAdjustment(N->getThisAdjustment()), Flags(N->getFlags()),
IsOptimized(N->isOptimized()), Unit(N->getRawUnit()),
TemplateParams(N->getRawTemplateParams()),
Declaration(N->getRawDeclaration()), Variables(N->getRawVariables()) {}
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() && IsLocalToUnit == RHS->isLocalToUnit() &&
IsDefinition == RHS->isDefinition() &&
ScopeLine == RHS->getScopeLine() &&
ContainingType == RHS->getRawContainingType() &&
Virtuality == RHS->getVirtuality() &&
VirtualIndex == RHS->getVirtualIndex() &&
ThisAdjustment == RHS->getThisAdjustment() &&
Flags == RHS->getFlags() && IsOptimized == RHS->isOptimized() &&
Unit == RHS->getUnit() &&
TemplateParams == RHS->getRawTemplateParams() &&
Declaration == RHS->getRawDeclaration() &&
Variables == RHS->getRawVariables();
}
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> {
typedef MDNodeKeyImpl<DISubprogram> KeyTy;
static bool isSubsetEqual(const KeyTy &LHS, const DISubprogram *RHS) {
return isDeclarationOfODRMember(LHS.IsDefinition, LHS.Scope,
LHS.LinkageName, RHS);
}
static bool isSubsetEqual(const DISubprogram *LHS, const DISubprogram *RHS) {
return isDeclarationOfODRMember(LHS->isDefinition(), LHS->getRawScope(),
LHS->getRawLinkageName(), 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 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.
return IsDefinition == RHS->isDefinition() && Scope == RHS->getRawScope() &&
LinkageName == RHS->getRawLinkageName();
}
};
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;
Metadata *File;
MDString *Name;
unsigned Line;
MDNodeKeyImpl(Metadata *Scope, Metadata *File, MDString *Name, unsigned Line)
: Scope(Scope), File(File), Name(Name), Line(Line) {}
MDNodeKeyImpl(const DINamespace *N)
: Scope(N->getRawScope()), File(N->getRawFile()), Name(N->getRawName()),
Line(N->getLine()) {}
bool isKeyOf(const DINamespace *RHS) const {
return Scope == RHS->getRawScope() && File == RHS->getRawFile() &&
Name == RHS->getRawName() && Line == RHS->getLine();
}
unsigned getHashValue() const {
return hash_combine(Scope, File, Name, Line);
}
};
template <> struct MDNodeKeyImpl<DIModule> {
Metadata *Scope;
MDString *Name;
MDString *ConfigurationMacros;
MDString *IncludePath;
MDString *ISysRoot;
MDNodeKeyImpl(Metadata *Scope, MDString *Name, MDString *ConfigurationMacros,
MDString *IncludePath, MDString *ISysRoot)
: Scope(Scope), Name(Name), ConfigurationMacros(ConfigurationMacros),
IncludePath(IncludePath), ISysRoot(ISysRoot) {}
MDNodeKeyImpl(const DIModule *N)
: Scope(N->getRawScope()), Name(N->getRawName()),
ConfigurationMacros(N->getRawConfigurationMacros()),
IncludePath(N->getRawIncludePath()), ISysRoot(N->getRawISysRoot()) {}
bool isKeyOf(const DIModule *RHS) const {
return Scope == RHS->getRawScope() && Name == RHS->getRawName() &&
ConfigurationMacros == RHS->getRawConfigurationMacros() &&
IncludePath == RHS->getRawIncludePath() &&
ISysRoot == RHS->getRawISysRoot();
}
unsigned getHashValue() const {
return hash_combine(Scope, Name,
ConfigurationMacros, IncludePath, ISysRoot);
}
};
template <> struct MDNodeKeyImpl<DITemplateTypeParameter> {
MDString *Name;
Metadata *Type;
MDNodeKeyImpl(MDString *Name, Metadata *Type) : Name(Name), Type(Type) {}
MDNodeKeyImpl(const DITemplateTypeParameter *N)
: Name(N->getRawName()), Type(N->getRawType()) {}
bool isKeyOf(const DITemplateTypeParameter *RHS) const {
return Name == RHS->getRawName() && Type == RHS->getRawType();
}
unsigned getHashValue() const { return hash_combine(Name, Type); }
};
template <> struct MDNodeKeyImpl<DITemplateValueParameter> {
unsigned Tag;
MDString *Name;
Metadata *Type;
Metadata *Value;
MDNodeKeyImpl(unsigned Tag, MDString *Name, Metadata *Type, Metadata *Value)
: Tag(Tag), Name(Name), Type(Type), Value(Value) {}
MDNodeKeyImpl(const DITemplateValueParameter *N)
: Tag(N->getTag()), Name(N->getRawName()), Type(N->getRawType()),
Value(N->getValue()) {}
bool isKeyOf(const DITemplateValueParameter *RHS) const {
return Tag == RHS->getTag() && Name == RHS->getRawName() &&
Type == RHS->getRawType() && Value == RHS->getValue();
}
unsigned getHashValue() const { return hash_combine(Tag, Name, Type, Value); }
};
template <> struct MDNodeKeyImpl<DIGlobalVariable> {
Metadata *Scope;
MDString *Name;
MDString *LinkageName;
Metadata *File;
unsigned Line;
Metadata *Type;
bool IsLocalToUnit;
bool IsDefinition;
Metadata *Expr;
Metadata *StaticDataMemberDeclaration;
MDNodeKeyImpl(Metadata *Scope, MDString *Name, MDString *LinkageName,
Metadata *File, unsigned Line, Metadata *Type,
bool IsLocalToUnit, bool IsDefinition, Metadata *Expr,
Metadata *StaticDataMemberDeclaration)
: Scope(Scope), Name(Name), LinkageName(LinkageName), File(File),
Line(Line), Type(Type), IsLocalToUnit(IsLocalToUnit),
IsDefinition(IsDefinition), Expr(Expr),
StaticDataMemberDeclaration(StaticDataMemberDeclaration) {}
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()),
Expr(N->getRawExpr()),
StaticDataMemberDeclaration(N->getRawStaticDataMemberDeclaration()) {}
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() &&
Expr == RHS->getRawExpr() &&
StaticDataMemberDeclaration ==
RHS->getRawStaticDataMemberDeclaration();
}
unsigned getHashValue() const {
return hash_combine(Scope, Name, LinkageName, File, Line, Type,
IsLocalToUnit, IsDefinition, Expr,
StaticDataMemberDeclaration);
}
};
template <> struct MDNodeKeyImpl<DILocalVariable> {
Metadata *Scope;
MDString *Name;
Metadata *File;
unsigned Line;
Metadata *Type;
unsigned Arg;
unsigned Flags;
MDNodeKeyImpl(Metadata *Scope, MDString *Name, Metadata *File, unsigned Line,
Metadata *Type, unsigned Arg, unsigned Flags)
: Scope(Scope), Name(Name), File(File), Line(Line), Type(Type), Arg(Arg),
Flags(Flags) {}
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()) {}
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();
}
unsigned getHashValue() const {
return hash_combine(Scope, Name, File, Line, Type, Arg, Flags);
}
};
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<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;
unsigned Line;
MDString *Name;
MDNodeKeyImpl(unsigned Tag, Metadata *Scope, Metadata *Entity, unsigned Line,
MDString *Name)
: Tag(Tag), Scope(Scope), Entity(Entity), Line(Line), Name(Name) {}
MDNodeKeyImpl(const DIImportedEntity *N)
: Tag(N->getTag()), Scope(N->getRawScope()), Entity(N->getRawEntity()),
Line(N->getLine()), Name(N->getRawName()) {}
bool isKeyOf(const DIImportedEntity *RHS) const {
return Tag == RHS->getTag() && Scope == RHS->getRawScope() &&
Entity == RHS->getRawEntity() && Line == RHS->getLine() &&
Name == RHS->getRawName();
}
unsigned getHashValue() const {
return hash_combine(Tag, Scope, Entity, 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);
}
};
/// \brief DenseMapInfo for MDNode subclasses.
template <class NodeTy> struct MDNodeInfo {
typedef MDNodeKeyImpl<NodeTy> KeyTy;
typedef MDNodeSubsetEqualImpl<NodeTy> SubsetEqualTy;
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) typedef MDNodeInfo<CLASS> CLASS##Info;
#include "llvm/IR/Metadata.def"
/// \brief 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(); }
/// \brief Get a particular attachment (if any).
MDNode *lookup(unsigned ID) const;
/// \brief 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);
/// \brief Remove an attachment.
///
/// Remove the attachment at \c ID, if any.
void erase(unsigned ID);
/// \brief 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;
/// \brief 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);
void insert(unsigned ID, MDNode &MD);
void 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;
void *InlineAsmDiagContext;
LLVMContext::DiagnosticHandlerTy DiagnosticHandler;
void *DiagnosticContext;
bool RespectDiagnosticFilters;
bool DiagnosticHotnessRequested;
LLVMContext::YieldCallbackTy YieldCallback;
void *YieldOpaqueHandle;
typedef DenseMap<APInt, ConstantInt *, DenseMapAPIntKeyInfo> IntMapTy;
IntMapTy IntConstants;
typedef DenseMap<APFloat, ConstantFP *, DenseMapAPFloatKeyInfo> FPMapTy;
FPMapTy FPConstants;
FoldingSet<AttributeImpl> AttrsSet;
FoldingSet<AttributeSetImpl> 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*, ConstantAggregateZero*> CAZConstants;
typedef ConstantUniqueMap<ConstantArray> ArrayConstantsTy;
ArrayConstantsTy ArrayConstants;
typedef ConstantUniqueMap<ConstantStruct> StructConstantsTy;
StructConstantsTy StructConstants;
typedef ConstantUniqueMap<ConstantVector> VectorConstantsTy;
VectorConstantsTy VectorConstants;
DenseMap<PointerType*, ConstantPointerNull*> CPNConstants;
DenseMap<Type*, UndefValue*> UVConstants;
StringMap<ConstantDataSequential*> CDSConstants;
DenseMap<std::pair<const Function *, const BasicBlock *>, BlockAddress *>
BlockAddresses;
ConstantUniqueMap<ConstantExpr> ExprConstants;
ConstantUniqueMap<InlineAsm> InlineAsms;
ConstantInt *TheTrueVal;
ConstantInt *TheFalseVal;
std::unique_ptr<ConstantTokenNone> TheNoneToken;
// Basic type instances.
Type VoidTy, LabelTy, HalfTy, FloatTy, DoubleTy, MetadataTy, TokenTy;
Type X86_FP80Ty, FP128Ty, PPC_FP128Ty, X86_MMXTy;
IntegerType Int1Ty, Int8Ty, Int16Ty, Int32Ty, Int64Ty, Int128Ty;
/// TypeAllocator - All dynamically allocated types are allocated from this.
/// They live forever until the context is torn down.
BumpPtrAllocator TypeAllocator;
DenseMap<unsigned, IntegerType*> IntegerTypes;
typedef DenseSet<FunctionType *, FunctionTypeKeyInfo> FunctionTypeSet;
FunctionTypeSet FunctionTypes;
typedef DenseSet<StructType *, AnonStructTypeKeyInfo> StructTypeSet;
StructTypeSet AnonStructTypes;
StringMap<StructType*> NamedStructTypes;
unsigned NamedStructTypesUniqueID;
DenseMap<std::pair<Type *, uint64_t>, ArrayType*> ArrayTypes;
DenseMap<std::pair<Type *, unsigned>, 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.
typedef DenseMap<Value*, ValueHandleBase*> ValueHandlesTy;
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;
/// 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;
int getOrAddScopeRecordIdxEntry(MDNode *N, int ExistingIdx);
int getOrAddScopeInlinedAtIdxEntry(MDNode *Scope, MDNode *IA,int ExistingIdx);
/// \brief 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;
/// 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();
/// \brief Access the object which manages optimization bisection for failure
/// analysis.
OptBisect &getOptBisect();
};
}
#endif
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