mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-01-19 04:32:19 +00:00
Move getCastToEmpty out of DIDescriptor into DIFactory. It is an
implementation detail of DIFactory anyway, and this allows it to avoid recomputing the same type over and over. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58960 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
parent
4d557e4872
commit
497a7a81a8
@ -24,6 +24,7 @@ namespace llvm {
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class Function;
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class GlobalVariable;
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class Module;
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class Type;
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class Value;
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class DIDescriptor {
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@ -71,9 +72,6 @@ namespace llvm {
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bool isNull() const { return GV == 0; }
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GlobalVariable *getGV() const { return GV; }
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/// getCastToEmpty - Return this descriptor as a Constant* with type '{}*'.
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Constant *getCastToEmpty() const;
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};
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/// DIAnchor - A wrapper for various anchor descriptors.
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@ -259,6 +257,7 @@ namespace llvm {
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Module &M;
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// Cached values for uniquing and faster lookups.
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DIAnchor CompileUnitAnchor, SubProgramAnchor, GlobalVariableAnchor;
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const Type *EmptyStructPtr; // "{}*".
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Function *StopPointFn; // llvm.dbg.stoppoint
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Function *FuncStartFn; // llvm.dbg.func.start
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Function *RegionStartFn; // llvm.dbg.region.start
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@ -270,9 +269,7 @@ namespace llvm {
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DIFactory(const DIFactory &); // DO NOT IMPLEMENT
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void operator=(const DIFactory&); // DO NOT IMPLEMENT
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public:
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explicit DIFactory(Module &m) : M(m) {
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StopPointFn = FuncStartFn = RegionStartFn = RegionEndFn = DeclareFn = 0;
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}
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explicit DIFactory(Module &m);
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/// GetOrCreateCompileUnitAnchor - Return the anchor for compile units,
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/// creating a new one if there isn't already one in the module.
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@ -386,6 +383,9 @@ namespace llvm {
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Constant *GetTagConstant(unsigned TAG);
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Constant *GetStringConstant(const std::string &String);
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DIAnchor GetOrCreateAnchor(unsigned TAG, const char *Name);
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/// getCastToEmpty - Return the descriptor as a Constant* with type '{}*'.
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Constant *getCastToEmpty(DIDescriptor D);
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};
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@ -80,14 +80,6 @@ GlobalVariable *DIDescriptor::getGlobalVariableField(unsigned Elt) const {
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/// getCastToEmpty - Return this descriptor as a Constant* with type '{}*'.
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/// This is only valid when the descriptor is non-null.
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Constant *DIDescriptor::getCastToEmpty() const {
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const Type *DestTy = PointerType::getUnqual(StructType::get(NULL, NULL));
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if (isNull()) return Constant::getNullValue(DestTy);
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return ConstantExpr::getBitCast(GV, DestTy);
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}
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//===----------------------------------------------------------------------===//
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// Simple Descriptor Constructors and other Methods
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//===----------------------------------------------------------------------===//
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@ -179,6 +171,18 @@ DIVariable::DIVariable(GlobalVariable *GV) : DIDescriptor(GV) {
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// DIFactory: Basic Helpers
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//===----------------------------------------------------------------------===//
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DIFactory::DIFactory(Module &m) : M(m) {
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StopPointFn = FuncStartFn = RegionStartFn = RegionEndFn = DeclareFn = 0;
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EmptyStructPtr = PointerType::getUnqual(StructType::get(NULL, NULL));
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}
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/// getCastToEmpty - Return this descriptor as a Constant* with type '{}*'.
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/// This is only valid when the descriptor is non-null.
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Constant *DIFactory::getCastToEmpty(DIDescriptor D) {
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if (D.isNull()) return Constant::getNullValue(EmptyStructPtr);
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return ConstantExpr::getBitCast(D.getGV(), EmptyStructPtr);
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}
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Constant *DIFactory::GetTagConstant(unsigned TAG) {
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assert((TAG & DIDescriptor::VersionMask) == 0 &&
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"Tag too large for debug encoding!");
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@ -212,7 +216,7 @@ Constant *DIFactory::GetStringConstant(const std::string &String) {
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/// GetOrCreateAnchor - Look up an anchor for the specified tag and name. If it
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/// already exists, return it. If not, create a new one and return it.
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DIAnchor DIFactory::GetOrCreateAnchor(unsigned TAG, const char *Name) {
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const Type *EltTy = StructType::get(Type::Int32Ty, Type::Int32Ty, NULL);
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const Type *EltTy = StructType::get(Type::Int32Ty, Type::Int32Ty, NULL);
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// Otherwise, create the global or return it if already in the module.
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Constant *C = M.getOrInsertGlobal(Name, EltTy);
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@ -280,11 +284,10 @@ DIArray DIFactory::GetOrCreateArray(DIDescriptor *Tys, unsigned NumTys) {
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SmallVector<Constant*, 16> Elts;
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for (unsigned i = 0; i != NumTys; ++i)
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Elts.push_back(Tys[i].getCastToEmpty());
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Elts.push_back(getCastToEmpty(Tys[i]));
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const Type *EltTy = PointerType::getUnqual(StructType::get(NULL,NULL));
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Constant *Init = ConstantArray::get(ArrayType::get(EltTy, Elts.size()),
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Constant *Init = ConstantArray::get(ArrayType::get(EmptyStructPtr,
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Elts.size()),
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&Elts[0], Elts.size());
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// If we already have this array, just return the uniqued version.
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DIDescriptor &Entry = SimpleConstantCache[Init];
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@ -333,7 +336,7 @@ DICompileUnit DIFactory::CreateCompileUnit(unsigned LangID,
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const std::string &Producer) {
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Constant *Elts[] = {
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GetTagConstant(dwarf::DW_TAG_compile_unit),
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GetOrCreateCompileUnitAnchor().getCastToEmpty(),
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getCastToEmpty(GetOrCreateCompileUnitAnchor()),
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ConstantInt::get(Type::Int32Ty, LangID),
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GetStringConstant(Filename),
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GetStringConstant(Directory),
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@ -380,9 +383,9 @@ DIBasicType DIFactory::CreateBasicType(DIDescriptor Context,
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unsigned Encoding) {
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Constant *Elts[] = {
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GetTagConstant(dwarf::DW_TAG_base_type),
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Context.getCastToEmpty(),
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getCastToEmpty(Context),
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GetStringConstant(Name),
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CompileUnit.getCastToEmpty(),
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getCastToEmpty(CompileUnit),
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ConstantInt::get(Type::Int32Ty, LineNumber),
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ConstantInt::get(Type::Int64Ty, SizeInBits),
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ConstantInt::get(Type::Int64Ty, AlignInBits),
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@ -415,15 +418,15 @@ DIDerivedType DIFactory::CreateDerivedType(unsigned Tag,
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DIType DerivedFrom) {
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Constant *Elts[] = {
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GetTagConstant(Tag),
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Context.getCastToEmpty(),
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getCastToEmpty(Context),
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GetStringConstant(Name),
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CompileUnit.getCastToEmpty(),
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getCastToEmpty(CompileUnit),
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ConstantInt::get(Type::Int32Ty, LineNumber),
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ConstantInt::get(Type::Int64Ty, SizeInBits),
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ConstantInt::get(Type::Int64Ty, AlignInBits),
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ConstantInt::get(Type::Int64Ty, OffsetInBits),
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ConstantInt::get(Type::Int32Ty, Flags),
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DerivedFrom.getCastToEmpty()
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getCastToEmpty(DerivedFrom)
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};
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Constant *Init = ConstantStruct::get(Elts, sizeof(Elts)/sizeof(Elts[0]));
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@ -450,16 +453,16 @@ DICompositeType DIFactory::CreateCompositeType(unsigned Tag,
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DIArray Elements) {
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Constant *Elts[] = {
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GetTagConstant(Tag),
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Context.getCastToEmpty(),
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getCastToEmpty(Context),
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GetStringConstant(Name),
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CompileUnit.getCastToEmpty(),
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getCastToEmpty(CompileUnit),
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ConstantInt::get(Type::Int32Ty, LineNumber),
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ConstantInt::get(Type::Int64Ty, SizeInBits),
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ConstantInt::get(Type::Int64Ty, AlignInBits),
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ConstantInt::get(Type::Int64Ty, OffsetInBits),
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ConstantInt::get(Type::Int32Ty, Flags),
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DerivedFrom.getCastToEmpty(),
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Elements.getCastToEmpty()
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getCastToEmpty(DerivedFrom),
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getCastToEmpty(Elements)
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};
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Constant *Init = ConstantStruct::get(Elts, sizeof(Elts)/sizeof(Elts[0]));
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@ -486,14 +489,14 @@ DISubprogram DIFactory::CreateSubprogram(DIDescriptor Context,
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bool isDefinition) {
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Constant *Elts[] = {
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GetTagConstant(dwarf::DW_TAG_subprogram),
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GetOrCreateSubprogramAnchor().getCastToEmpty(),
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Context.getCastToEmpty(),
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getCastToEmpty(GetOrCreateSubprogramAnchor()),
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getCastToEmpty(Context),
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GetStringConstant(Name),
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GetStringConstant(DisplayName),
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GetStringConstant(LinkageName),
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CompileUnit.getCastToEmpty(),
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getCastToEmpty(CompileUnit),
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ConstantInt::get(Type::Int32Ty, LineNo),
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Type.getCastToEmpty(),
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getCastToEmpty(Type),
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ConstantInt::get(Type::Int1Ty, isLocalToUnit),
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ConstantInt::get(Type::Int1Ty, isDefinition)
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};
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@ -519,18 +522,17 @@ DIFactory::CreateGlobalVariable(DIDescriptor Context, const std::string &Name,
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Constant *Elts[] = {
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GetTagConstant(dwarf::DW_TAG_variable),
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GetOrCreateGlobalVariableAnchor().getCastToEmpty(),
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Context.getCastToEmpty(),
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getCastToEmpty(GetOrCreateGlobalVariableAnchor()),
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getCastToEmpty(Context),
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GetStringConstant(Name),
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GetStringConstant(DisplayName),
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GetStringConstant(LinkageName),
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CompileUnit.getCastToEmpty(),
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getCastToEmpty(CompileUnit),
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ConstantInt::get(Type::Int32Ty, LineNo),
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Type.getCastToEmpty(),
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getCastToEmpty(Type),
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ConstantInt::get(Type::Int1Ty, isLocalToUnit),
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ConstantInt::get(Type::Int1Ty, isDefinition),
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ConstantExpr::getBitCast(Val,
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PointerType::getUnqual(StructType::get(NULL,NULL)))
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ConstantExpr::getBitCast(Val, EmptyStructPtr)
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};
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Constant *Init = ConstantStruct::get(Elts, sizeof(Elts)/sizeof(Elts[0]));
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@ -552,11 +554,11 @@ DIVariable DIFactory::CreateVariable(unsigned Tag, DIDescriptor Context,
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Constant *Elts[] = {
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GetTagConstant(Tag),
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Context.getCastToEmpty(),
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getCastToEmpty(Context),
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GetStringConstant(Name),
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CompileUnit.getCastToEmpty(),
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getCastToEmpty(CompileUnit),
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ConstantInt::get(Type::Int32Ty, LineNo),
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Type.getCastToEmpty(),
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getCastToEmpty(Type),
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};
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Constant *Init = ConstantStruct::get(Elts, sizeof(Elts)/sizeof(Elts[0]));
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@ -575,7 +577,7 @@ DIVariable DIFactory::CreateVariable(unsigned Tag, DIDescriptor Context,
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DIBlock DIFactory::CreateBlock(DIDescriptor Context) {
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Constant *Elts[] = {
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GetTagConstant(dwarf::DW_TAG_lexical_block),
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Context.getCastToEmpty()
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getCastToEmpty(Context)
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};
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Constant *Init = ConstantStruct::get(Elts, sizeof(Elts)/sizeof(Elts[0]));
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@ -607,7 +609,7 @@ void DIFactory::InsertStopPoint(DICompileUnit CU, unsigned LineNo,
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Value *Args[] = {
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llvm::ConstantInt::get(llvm::Type::Int32Ty, LineNo),
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llvm::ConstantInt::get(llvm::Type::Int32Ty, ColNo),
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CU.getCastToEmpty()
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getCastToEmpty(CU)
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};
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CallInst::Create(StopPointFn, Args, Args+3, "", BB);
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}
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@ -621,7 +623,7 @@ void DIFactory::InsertSubprogramStart(DISubprogram SP, BasicBlock *BB) {
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llvm::Intrinsic::dbg_func_start);
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// Call llvm.dbg.func.start which also implicitly sets a stoppoint.
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CallInst::Create(FuncStartFn, SP.getCastToEmpty(), "", BB);
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CallInst::Create(FuncStartFn, getCastToEmpty(SP), "", BB);
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}
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/// InsertRegionStart - Insert a new llvm.dbg.region.start intrinsic call to
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@ -632,7 +634,7 @@ void DIFactory::InsertRegionStart(DIDescriptor D, BasicBlock *BB) {
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RegionStartFn = llvm::Intrinsic::getDeclaration(&M,
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llvm::Intrinsic::dbg_region_start);
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// Call llvm.dbg.func.start.
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CallInst::Create(RegionStartFn, D.getCastToEmpty(), "", BB);
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CallInst::Create(RegionStartFn, getCastToEmpty(D), "", BB);
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}
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@ -644,19 +646,18 @@ void DIFactory::InsertRegionEnd(DIDescriptor D, BasicBlock *BB) {
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RegionEndFn = llvm::Intrinsic::getDeclaration(&M,
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llvm::Intrinsic::dbg_region_end);
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CallInst::Create(RegionEndFn, D.getCastToEmpty(), "", BB);
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CallInst::Create(RegionEndFn, getCastToEmpty(D), "", BB);
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}
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/// InsertDeclare - Insert a new llvm.dbg.declare intrinsic call.
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void DIFactory::InsertDeclare(llvm::Value *Storage, DIVariable D,
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BasicBlock *BB) {
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// Cast the storage to a {}* for the call to llvm.dbg.declare.
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const Type *DestTy = PointerType::getUnqual(StructType::get(NULL, NULL));
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Storage = new llvm::BitCastInst(Storage, DestTy, Storage->getName(), BB);
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Storage = new llvm::BitCastInst(Storage, EmptyStructPtr, "", BB);
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if (!DeclareFn)
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DeclareFn = llvm::Intrinsic::getDeclaration(&M,
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llvm::Intrinsic::dbg_declare);
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Value *Args[] = { Storage, D.getCastToEmpty() };
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Value *Args[] = { Storage, getCastToEmpty(D) };
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CallInst::Create(DeclareFn, Args, Args+2, "", BB);
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}
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