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2985d438ed
llvm-mirror/lib/IR/DebugInfoMetadata.cpp
Duncan P. N. Exon Smith 94512f24de DebugInfo: Remove MDString-based type references 
Eliminate DITypeIdentifierMap and make DITypeRef a thin wrapper around
DIType*.  It is no longer legal to refer to a DICompositeType by its
'identifier:', and DIBuilder no longer retains all types with an
'identifier:' automatically.

Aside from the bitcode upgrade, this is mainly removing logic to resolve
an MDString-based reference to an actualy DIType.  The commits leading
up to this have made the implicit type map in DICompileUnit's
'retainedTypes:' field superfluous.

This does not remove DITypeRef, DIScopeRef, DINodeRef, and
DITypeRefArray, or stop using them in DI-related metadata.  Although as
of this commit they aren't serving a useful purpose, there are patchces
under review to reuse them for CodeView support.

The tests in LLVM were updated with deref-typerefs.sh, which is attached
to the thread "[RFC] Lazy-loading of debug info metadata":

  http://lists.llvm.org/pipermail/llvm-dev/2016-April/098318.html

llvm-svn: 267296
2016-04-23 21:08:00 +00:00

636 lines
26 KiB
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//===- DebugInfoMetadata.cpp - Implement debug info metadata --------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the debug info Metadata classes.
//
//===----------------------------------------------------------------------===//
#include "llvm/IR/DebugInfoMetadata.h"
#include "LLVMContextImpl.h"
#include "MetadataImpl.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/IR/Function.h"
using namespace llvm;
DILocation::DILocation(LLVMContext &C, StorageType Storage, unsigned Line,
unsigned Column, ArrayRef<Metadata *> MDs)
: MDNode(C, DILocationKind, Storage, MDs) {
assert((MDs.size() == 1 || MDs.size() == 2) &&
"Expected a scope and optional inlined-at");
// Set line and column.
assert(Column < (1u << 16) && "Expected 16-bit column");
SubclassData32 = Line;
SubclassData16 = Column;
}
static void adjustColumn(unsigned &Column) {
// Set to unknown on overflow. We only have 16 bits to play with here.
if (Column >= (1u << 16))
Column = 0;
}
DILocation *DILocation::getImpl(LLVMContext &Context, unsigned Line,
unsigned Column, Metadata *Scope,
Metadata *InlinedAt, StorageType Storage,
bool ShouldCreate) {
// Fixup column.
adjustColumn(Column);
if (Storage == Uniqued) {
if (auto *N =
getUniqued(Context.pImpl->DILocations,
DILocationInfo::KeyTy(Line, Column, Scope, InlinedAt)))
return N;
if (!ShouldCreate)
return nullptr;
} else {
assert(ShouldCreate && "Expected non-uniqued nodes to always be created");
}
SmallVector<Metadata *, 2> Ops;
Ops.push_back(Scope);
if (InlinedAt)
Ops.push_back(InlinedAt);
return storeImpl(new (Ops.size())
DILocation(Context, Storage, Line, Column, Ops),
Storage, Context.pImpl->DILocations);
}
unsigned DINode::getFlag(StringRef Flag) {
return StringSwitch<unsigned>(Flag)
#define HANDLE_DI_FLAG(ID, NAME) .Case("DIFlag" #NAME, Flag##NAME)
#include "llvm/IR/DebugInfoFlags.def"
.Default(0);
}
const char *DINode::getFlagString(unsigned Flag) {
switch (Flag) {
default:
return "";
#define HANDLE_DI_FLAG(ID, NAME) \
case Flag##NAME: \
return "DIFlag" #NAME;
#include "llvm/IR/DebugInfoFlags.def"
}
}
unsigned DINode::splitFlags(unsigned Flags,
SmallVectorImpl<unsigned> &SplitFlags) {
// Accessibility flags need to be specially handled, since they're packed
// together.
if (unsigned A = Flags & FlagAccessibility) {
if (A == FlagPrivate)
SplitFlags.push_back(FlagPrivate);
else if (A == FlagProtected)
SplitFlags.push_back(FlagProtected);
else
SplitFlags.push_back(FlagPublic);
Flags &= ~A;
}
#define HANDLE_DI_FLAG(ID, NAME) \
if (unsigned Bit = Flags & ID) { \
SplitFlags.push_back(Bit); \
Flags &= ~Bit; \
}
#include "llvm/IR/DebugInfoFlags.def"
return Flags;
}
DIScopeRef DIScope::getScope() const {
if (auto *T = dyn_cast<DIType>(this))
return T->getScope();
if (auto *SP = dyn_cast<DISubprogram>(this))
return SP->getScope();
if (auto *LB = dyn_cast<DILexicalBlockBase>(this))
return LB->getScope();
if (auto *NS = dyn_cast<DINamespace>(this))
return NS->getScope();
if (auto *M = dyn_cast<DIModule>(this))
return M->getScope();
assert((isa<DIFile>(this) || isa<DICompileUnit>(this)) &&
"Unhandled type of scope.");
return nullptr;
}
StringRef DIScope::getName() const {
if (auto *T = dyn_cast<DIType>(this))
return T->getName();
if (auto *SP = dyn_cast<DISubprogram>(this))
return SP->getName();
if (auto *NS = dyn_cast<DINamespace>(this))
return NS->getName();
if (auto *M = dyn_cast<DIModule>(this))
return M->getName();
assert((isa<DILexicalBlockBase>(this) || isa<DIFile>(this) ||
isa<DICompileUnit>(this)) &&
"Unhandled type of scope.");
return "";
}
#ifndef NDEBUG
static bool isCanonical(const MDString *S) {
return !S || !S->getString().empty();
}
#endif
GenericDINode *GenericDINode::getImpl(LLVMContext &Context, unsigned Tag,
MDString *Header,
ArrayRef<Metadata *> DwarfOps,
StorageType Storage, bool ShouldCreate) {
unsigned Hash = 0;
if (Storage == Uniqued) {
GenericDINodeInfo::KeyTy Key(Tag, Header, DwarfOps);
if (auto *N = getUniqued(Context.pImpl->GenericDINodes, Key))
return N;
if (!ShouldCreate)
return nullptr;
Hash = Key.getHash();
} else {
assert(ShouldCreate && "Expected non-uniqued nodes to always be created");
}
// Use a nullptr for empty headers.
assert(isCanonical(Header) && "Expected canonical MDString");
Metadata *PreOps[] = {Header};
return storeImpl(new (DwarfOps.size() + 1) GenericDINode(
Context, Storage, Hash, Tag, PreOps, DwarfOps),
Storage, Context.pImpl->GenericDINodes);
}
void GenericDINode::recalculateHash() {
setHash(GenericDINodeInfo::KeyTy::calculateHash(this));
}
#define UNWRAP_ARGS_IMPL(...) __VA_ARGS__
#define UNWRAP_ARGS(ARGS) UNWRAP_ARGS_IMPL ARGS
#define DEFINE_GETIMPL_LOOKUP(CLASS, ARGS) \
do { \
if (Storage == Uniqued) { \
if (auto *N = getUniqued(Context.pImpl->CLASS##s, \
CLASS##Info::KeyTy(UNWRAP_ARGS(ARGS)))) \
return N; \
if (!ShouldCreate) \
return nullptr; \
} else { \
assert(ShouldCreate && \
"Expected non-uniqued nodes to always be created"); \
} \
} while (false)
#define DEFINE_GETIMPL_STORE(CLASS, ARGS, OPS) \
return storeImpl(new (array_lengthof(OPS)) \
CLASS(Context, Storage, UNWRAP_ARGS(ARGS), OPS), \
Storage, Context.pImpl->CLASS##s)
#define DEFINE_GETIMPL_STORE_NO_OPS(CLASS, ARGS) \
return storeImpl(new (0u) CLASS(Context, Storage, UNWRAP_ARGS(ARGS)), \
Storage, Context.pImpl->CLASS##s)
#define DEFINE_GETIMPL_STORE_NO_CONSTRUCTOR_ARGS(CLASS, OPS) \
return storeImpl(new (array_lengthof(OPS)) CLASS(Context, Storage, OPS), \
Storage, Context.pImpl->CLASS##s)
DISubrange *DISubrange::getImpl(LLVMContext &Context, int64_t Count, int64_t Lo,
StorageType Storage, bool ShouldCreate) {
DEFINE_GETIMPL_LOOKUP(DISubrange, (Count, Lo));
DEFINE_GETIMPL_STORE_NO_OPS(DISubrange, (Count, Lo));
}
DIEnumerator *DIEnumerator::getImpl(LLVMContext &Context, int64_t Value,
MDString *Name, StorageType Storage,
bool ShouldCreate) {
assert(isCanonical(Name) && "Expected canonical MDString");
DEFINE_GETIMPL_LOOKUP(DIEnumerator, (Value, Name));
Metadata *Ops[] = {Name};
DEFINE_GETIMPL_STORE(DIEnumerator, (Value), Ops);
}
DIBasicType *DIBasicType::getImpl(LLVMContext &Context, unsigned Tag,
MDString *Name, uint64_t SizeInBits,
uint64_t AlignInBits, unsigned Encoding,
StorageType Storage, bool ShouldCreate) {
assert(isCanonical(Name) && "Expected canonical MDString");
DEFINE_GETIMPL_LOOKUP(DIBasicType,
(Tag, Name, SizeInBits, AlignInBits, Encoding));
Metadata *Ops[] = {nullptr, nullptr, Name};
DEFINE_GETIMPL_STORE(DIBasicType, (Tag, SizeInBits, AlignInBits, Encoding),
Ops);
}
DIDerivedType *DIDerivedType::getImpl(
LLVMContext &Context, 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, StorageType Storage, bool ShouldCreate) {
assert(isCanonical(Name) && "Expected canonical MDString");
DEFINE_GETIMPL_LOOKUP(DIDerivedType,
(Tag, Name, File, Line, Scope, BaseType, SizeInBits,
AlignInBits, OffsetInBits, Flags, ExtraData));
Metadata *Ops[] = {File, Scope, Name, BaseType, ExtraData};
DEFINE_GETIMPL_STORE(
DIDerivedType, (Tag, Line, SizeInBits, AlignInBits, OffsetInBits, Flags),
Ops);
}
DICompositeType *DICompositeType::getImpl(
LLVMContext &Context, 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, StorageType Storage,
bool ShouldCreate) {
assert(isCanonical(Name) && "Expected canonical MDString");
// Keep this in sync with buildODRType.
DEFINE_GETIMPL_LOOKUP(
DICompositeType, (Tag, Name, File, Line, Scope, BaseType, SizeInBits,
AlignInBits, OffsetInBits, Flags, Elements, RuntimeLang,
VTableHolder, TemplateParams, Identifier));
Metadata *Ops[] = {File, Scope, Name, BaseType,
Elements, VTableHolder, TemplateParams, Identifier};
DEFINE_GETIMPL_STORE(DICompositeType, (Tag, Line, RuntimeLang, SizeInBits,
AlignInBits, OffsetInBits, Flags),
Ops);
}
DICompositeType *DICompositeType::buildODRType(
LLVMContext &Context, MDString &Identifier, 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) {
assert(!Identifier.getString().empty() && "Expected valid identifier");
if (!Context.isODRUniquingDebugTypes())
return nullptr;
auto *&CT = (*Context.pImpl->DITypeMap)[&Identifier];
if (!CT)
return CT = DICompositeType::getDistinct(
Context, Tag, Name, File, Line, Scope, BaseType, SizeInBits,
AlignInBits, OffsetInBits, Flags, Elements, RuntimeLang,
VTableHolder, TemplateParams, &Identifier);
// Only mutate CT if it's a forward declaration and the new operands aren't.
assert(CT->getRawIdentifier() == &Identifier && "Wrong ODR identifier?");
if (!CT->isForwardDecl() || (Flags & DINode::FlagFwdDecl))
return CT;
// Mutate CT in place. Keep this in sync with getImpl.
CT->mutate(Tag, Line, RuntimeLang, SizeInBits, AlignInBits, OffsetInBits,
Flags);
Metadata *Ops[] = {File, Scope, Name, BaseType,
Elements, VTableHolder, TemplateParams, &Identifier};
assert(std::end(Ops) - std::begin(Ops) == CT->getNumOperands() &&
"Mismatched number of operands");
for (unsigned I = 0, E = CT->getNumOperands(); I != E; ++I)
if (Ops[I] != CT->getOperand(I))
CT->setOperand(I, Ops[I]);
return CT;
}
DICompositeType *DICompositeType::getODRType(
LLVMContext &Context, MDString &Identifier, 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) {
assert(!Identifier.getString().empty() && "Expected valid identifier");
if (!Context.isODRUniquingDebugTypes())
return nullptr;
auto *&CT = (*Context.pImpl->DITypeMap)[&Identifier];
if (!CT)
CT = DICompositeType::getDistinct(
Context, Tag, Name, File, Line, Scope, BaseType, SizeInBits,
AlignInBits, OffsetInBits, Flags, Elements, RuntimeLang, VTableHolder,
TemplateParams, &Identifier);
return CT;
}
DICompositeType *DICompositeType::getODRTypeIfExists(LLVMContext &Context,
MDString &Identifier) {
assert(!Identifier.getString().empty() && "Expected valid identifier");
if (!Context.isODRUniquingDebugTypes())
return nullptr;
return Context.pImpl->DITypeMap->lookup(&Identifier);
}
DISubroutineType *DISubroutineType::getImpl(LLVMContext &Context,
unsigned Flags, Metadata *TypeArray,
StorageType Storage,
bool ShouldCreate) {
DEFINE_GETIMPL_LOOKUP(DISubroutineType, (Flags, TypeArray));
Metadata *Ops[] = {nullptr, nullptr, nullptr, TypeArray};
DEFINE_GETIMPL_STORE(DISubroutineType, (Flags), Ops);
}
DIFile *DIFile::getImpl(LLVMContext &Context, MDString *Filename,
MDString *Directory, StorageType Storage,
bool ShouldCreate) {
assert(isCanonical(Filename) && "Expected canonical MDString");
assert(isCanonical(Directory) && "Expected canonical MDString");
DEFINE_GETIMPL_LOOKUP(DIFile, (Filename, Directory));
Metadata *Ops[] = {Filename, Directory};
DEFINE_GETIMPL_STORE_NO_CONSTRUCTOR_ARGS(DIFile, Ops);
}
DICompileUnit *DICompileUnit::getImpl(
LLVMContext &Context, unsigned SourceLanguage, Metadata *File,
MDString *Producer, bool IsOptimized, MDString *Flags,
unsigned RuntimeVersion, MDString *SplitDebugFilename,
unsigned EmissionKind, Metadata *EnumTypes, Metadata *RetainedTypes,
Metadata *GlobalVariables, Metadata *ImportedEntities, Metadata *Macros,
uint64_t DWOId, StorageType Storage, bool ShouldCreate) {
assert(Storage != Uniqued && "Cannot unique DICompileUnit");
assert(isCanonical(Producer) && "Expected canonical MDString");
assert(isCanonical(Flags) && "Expected canonical MDString");
assert(isCanonical(SplitDebugFilename) && "Expected canonical MDString");
Metadata *Ops[] = {
File, Producer, Flags, SplitDebugFilename,
EnumTypes, RetainedTypes, GlobalVariables, ImportedEntities,
Macros};
return storeImpl(new (array_lengthof(Ops)) DICompileUnit(
Context, Storage, SourceLanguage, IsOptimized,
RuntimeVersion, EmissionKind, DWOId, Ops),
Storage);
}
Optional<DICompileUnit::DebugEmissionKind>
DICompileUnit::getEmissionKind(StringRef Str) {
return StringSwitch<Optional<DebugEmissionKind>>(Str)
.Case("NoDebug", NoDebug)
.Case("FullDebug", FullDebug)
.Case("LineTablesOnly", LineTablesOnly)
.Default(None);
}
const char *DICompileUnit::EmissionKindString(DebugEmissionKind EK) {
switch (EK) {
case NoDebug: return "NoDebug";
case FullDebug: return "FullDebug";
case LineTablesOnly: return "LineTablesOnly";
}
return nullptr;
}
DISubprogram *DILocalScope::getSubprogram() const {
if (auto *Block = dyn_cast<DILexicalBlockBase>(this))
return Block->getScope()->getSubprogram();
return const_cast<DISubprogram *>(cast<DISubprogram>(this));
}
DILocalScope *DILocalScope::getNonLexicalBlockFileScope() const {
if (auto *File = dyn_cast<DILexicalBlockFile>(this))
return File->getScope()->getNonLexicalBlockFileScope();
return const_cast<DILocalScope *>(this);
}
DISubprogram *DISubprogram::getImpl(
LLVMContext &Context, Metadata *Scope, MDString *Name,
MDString *LinkageName, Metadata *File, unsigned Line, Metadata *Type,
bool IsLocalToUnit, bool IsDefinition, unsigned ScopeLine,
Metadata *ContainingType, unsigned Virtuality, unsigned VirtualIndex,
unsigned Flags, bool IsOptimized, Metadata *Unit, Metadata *TemplateParams,
Metadata *Declaration, Metadata *Variables, StorageType Storage,
bool ShouldCreate) {
assert(isCanonical(Name) && "Expected canonical MDString");
assert(isCanonical(LinkageName) && "Expected canonical MDString");
DEFINE_GETIMPL_LOOKUP(DISubprogram,
(Scope, Name, LinkageName, File, Line, Type,
IsLocalToUnit, IsDefinition, ScopeLine, ContainingType,
Virtuality, VirtualIndex, Flags, IsOptimized, Unit,
TemplateParams, Declaration, Variables));
Metadata *Ops[] = {File, Scope, Name, Name,
LinkageName, Type, ContainingType, Unit,
TemplateParams, Declaration, Variables};
DEFINE_GETIMPL_STORE(DISubprogram,
(Line, ScopeLine, Virtuality, VirtualIndex, Flags,
IsLocalToUnit, IsDefinition, IsOptimized),
Ops);
}
bool DISubprogram::describes(const Function *F) const {
assert(F && "Invalid function");
if (F->getSubprogram() == this)
return true;
StringRef Name = getLinkageName();
if (Name.empty())
Name = getName();
return F->getName() == Name;
}
DILexicalBlock *DILexicalBlock::getImpl(LLVMContext &Context, Metadata *Scope,
Metadata *File, unsigned Line,
unsigned Column, StorageType Storage,
bool ShouldCreate) {
// Fixup column.
adjustColumn(Column);
assert(Scope && "Expected scope");
DEFINE_GETIMPL_LOOKUP(DILexicalBlock, (Scope, File, Line, Column));
Metadata *Ops[] = {File, Scope};
DEFINE_GETIMPL_STORE(DILexicalBlock, (Line, Column), Ops);
}
DILexicalBlockFile *DILexicalBlockFile::getImpl(LLVMContext &Context,
Metadata *Scope, Metadata *File,
unsigned Discriminator,
StorageType Storage,
bool ShouldCreate) {
assert(Scope && "Expected scope");
DEFINE_GETIMPL_LOOKUP(DILexicalBlockFile, (Scope, File, Discriminator));
Metadata *Ops[] = {File, Scope};
DEFINE_GETIMPL_STORE(DILexicalBlockFile, (Discriminator), Ops);
}
DINamespace *DINamespace::getImpl(LLVMContext &Context, Metadata *Scope,
Metadata *File, MDString *Name, unsigned Line,
StorageType Storage, bool ShouldCreate) {
assert(isCanonical(Name) && "Expected canonical MDString");
DEFINE_GETIMPL_LOOKUP(DINamespace, (Scope, File, Name, Line));
Metadata *Ops[] = {File, Scope, Name};
DEFINE_GETIMPL_STORE(DINamespace, (Line), Ops);
}
DIModule *DIModule::getImpl(LLVMContext &Context, Metadata *Scope,
MDString *Name, MDString *ConfigurationMacros,
MDString *IncludePath, MDString *ISysRoot,
StorageType Storage, bool ShouldCreate) {
assert(isCanonical(Name) && "Expected canonical MDString");
DEFINE_GETIMPL_LOOKUP(
DIModule, (Scope, Name, ConfigurationMacros, IncludePath, ISysRoot));
Metadata *Ops[] = {Scope, Name, ConfigurationMacros, IncludePath, ISysRoot};
DEFINE_GETIMPL_STORE_NO_CONSTRUCTOR_ARGS(DIModule, Ops);
}
DITemplateTypeParameter *DITemplateTypeParameter::getImpl(LLVMContext &Context,
MDString *Name,
Metadata *Type,
StorageType Storage,
bool ShouldCreate) {
assert(isCanonical(Name) && "Expected canonical MDString");
DEFINE_GETIMPL_LOOKUP(DITemplateTypeParameter, (Name, Type));
Metadata *Ops[] = {Name, Type};
DEFINE_GETIMPL_STORE_NO_CONSTRUCTOR_ARGS(DITemplateTypeParameter, Ops);
}
DITemplateValueParameter *DITemplateValueParameter::getImpl(
LLVMContext &Context, unsigned Tag, MDString *Name, Metadata *Type,
Metadata *Value, StorageType Storage, bool ShouldCreate) {
assert(isCanonical(Name) && "Expected canonical MDString");
DEFINE_GETIMPL_LOOKUP(DITemplateValueParameter, (Tag, Name, Type, Value));
Metadata *Ops[] = {Name, Type, Value};
DEFINE_GETIMPL_STORE(DITemplateValueParameter, (Tag), Ops);
}
DIGlobalVariable *
DIGlobalVariable::getImpl(LLVMContext &Context, Metadata *Scope, MDString *Name,
MDString *LinkageName, Metadata *File, unsigned Line,
Metadata *Type, bool IsLocalToUnit, bool IsDefinition,
Metadata *Variable,
Metadata *StaticDataMemberDeclaration,
StorageType Storage, bool ShouldCreate) {
assert(isCanonical(Name) && "Expected canonical MDString");
assert(isCanonical(LinkageName) && "Expected canonical MDString");
DEFINE_GETIMPL_LOOKUP(DIGlobalVariable,
(Scope, Name, LinkageName, File, Line, Type,
IsLocalToUnit, IsDefinition, Variable,
StaticDataMemberDeclaration));
Metadata *Ops[] = {Scope, Name, File, Type,
Name, LinkageName, Variable, StaticDataMemberDeclaration};
DEFINE_GETIMPL_STORE(DIGlobalVariable, (Line, IsLocalToUnit, IsDefinition),
Ops);
}
DILocalVariable *DILocalVariable::getImpl(LLVMContext &Context, Metadata *Scope,
MDString *Name, Metadata *File,
unsigned Line, Metadata *Type,
unsigned Arg, unsigned Flags,
StorageType Storage,
bool ShouldCreate) {
// 64K ought to be enough for any frontend.
assert(Arg <= UINT16_MAX && "Expected argument number to fit in 16-bits");
assert(Scope && "Expected scope");
assert(isCanonical(Name) && "Expected canonical MDString");
DEFINE_GETIMPL_LOOKUP(DILocalVariable,
(Scope, Name, File, Line, Type, Arg, Flags));
Metadata *Ops[] = {Scope, Name, File, Type};
DEFINE_GETIMPL_STORE(DILocalVariable, (Line, Arg, Flags), Ops);
}
DIExpression *DIExpression::getImpl(LLVMContext &Context,
ArrayRef<uint64_t> Elements,
StorageType Storage, bool ShouldCreate) {
DEFINE_GETIMPL_LOOKUP(DIExpression, (Elements));
DEFINE_GETIMPL_STORE_NO_OPS(DIExpression, (Elements));
}
unsigned DIExpression::ExprOperand::getSize() const {
switch (getOp()) {
case dwarf::DW_OP_bit_piece:
return 3;
case dwarf::DW_OP_plus:
case dwarf::DW_OP_minus:
return 2;
default:
return 1;
}
}
bool DIExpression::isValid() const {
for (auto I = expr_op_begin(), E = expr_op_end(); I != E; ++I) {
// Check that there's space for the operand.
if (I->get() + I->getSize() > E->get())
return false;
// Check that the operand is valid.
switch (I->getOp()) {
default:
return false;
case dwarf::DW_OP_bit_piece:
// Piece expressions must be at the end.
return I->get() + I->getSize() == E->get();
case dwarf::DW_OP_plus:
case dwarf::DW_OP_minus:
case dwarf::DW_OP_deref:
break;
}
}
return true;
}
bool DIExpression::isBitPiece() const {
assert(isValid() && "Expected valid expression");
if (unsigned N = getNumElements())
if (N >= 3)
return getElement(N - 3) == dwarf::DW_OP_bit_piece;
return false;
}
uint64_t DIExpression::getBitPieceOffset() const {
assert(isBitPiece() && "Expected bit piece");
return getElement(getNumElements() - 2);
}
uint64_t DIExpression::getBitPieceSize() const {
assert(isBitPiece() && "Expected bit piece");
return getElement(getNumElements() - 1);
}
DIObjCProperty *DIObjCProperty::getImpl(
LLVMContext &Context, MDString *Name, Metadata *File, unsigned Line,
MDString *GetterName, MDString *SetterName, unsigned Attributes,
Metadata *Type, StorageType Storage, bool ShouldCreate) {
assert(isCanonical(Name) && "Expected canonical MDString");
assert(isCanonical(GetterName) && "Expected canonical MDString");
assert(isCanonical(SetterName) && "Expected canonical MDString");
DEFINE_GETIMPL_LOOKUP(DIObjCProperty, (Name, File, Line, GetterName,
SetterName, Attributes, Type));
Metadata *Ops[] = {Name, File, GetterName, SetterName, Type};
DEFINE_GETIMPL_STORE(DIObjCProperty, (Line, Attributes), Ops);
}
DIImportedEntity *DIImportedEntity::getImpl(LLVMContext &Context, unsigned Tag,
Metadata *Scope, Metadata *Entity,
unsigned Line, MDString *Name,
StorageType Storage,
bool ShouldCreate) {
assert(isCanonical(Name) && "Expected canonical MDString");
DEFINE_GETIMPL_LOOKUP(DIImportedEntity, (Tag, Scope, Entity, Line, Name));
Metadata *Ops[] = {Scope, Entity, Name};
DEFINE_GETIMPL_STORE(DIImportedEntity, (Tag, Line), Ops);
}
DIMacro *DIMacro::getImpl(LLVMContext &Context, unsigned MIType,
unsigned Line, MDString *Name, MDString *Value,
StorageType Storage, bool ShouldCreate) {
assert(isCanonical(Name) && "Expected canonical MDString");
DEFINE_GETIMPL_LOOKUP(DIMacro, (MIType, Line, Name, Value));
Metadata *Ops[] = { Name, Value };
DEFINE_GETIMPL_STORE(DIMacro, (MIType, Line), Ops);
}
DIMacroFile *DIMacroFile::getImpl(LLVMContext &Context, unsigned MIType,
unsigned Line, Metadata *File,
Metadata *Elements, StorageType Storage,
bool ShouldCreate) {
DEFINE_GETIMPL_LOOKUP(DIMacroFile,
(MIType, Line, File, Elements));
Metadata *Ops[] = { File, Elements };
DEFINE_GETIMPL_STORE(DIMacroFile, (MIType, Line), Ops);
}
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