[DebugInfo][OpenCL] Address post-commit review for r338299
NFC refactor of code to generate debug info for OpenCL 2.X blocks.
Differential Revision: https://reviews.llvm.org/D50099
llvm-svn: 339265
diff --git a/clang/lib/CodeGen/CGDebugInfo.cpp b/clang/lib/CodeGen/CGDebugInfo.cpp
index 5be6fb3..1265bba 100644
--- a/clang/lib/CodeGen/CGDebugInfo.cpp
+++ b/clang/lib/CodeGen/CGDebugInfo.cpp
@@ -942,35 +942,18 @@
return Cache;
}
-llvm::DIType *CGDebugInfo::CreateType(const BlockPointerType *Ty,
- llvm::DIFile *Unit) {
- SmallVector<llvm::Metadata *, 8> EltTys;
+uint64_t CGDebugInfo::collectDefaultElementTypesForBlockPointer(
+ const BlockPointerType *Ty, llvm::DIFile *Unit, llvm::DIDerivedType *DescTy,
+ unsigned LineNo, SmallVectorImpl<llvm::Metadata *> &EltTys) {
QualType FType;
- uint64_t FieldSize, FieldOffset;
- uint32_t FieldAlign;
- llvm::DINodeArray Elements;
- FieldOffset = 0;
- FType = CGM.getContext().UnsignedLongTy;
- EltTys.push_back(CreateMemberType(Unit, FType, "reserved", &FieldOffset));
- EltTys.push_back(CreateMemberType(Unit, FType, "Size", &FieldOffset));
+ // Advanced by calls to CreateMemberType in increments of FType, then
+ // returned as the overall size of the default elements.
+ uint64_t FieldOffset = 0;
- Elements = DBuilder.getOrCreateArray(EltTys);
- EltTys.clear();
-
- llvm::DINode::DIFlags Flags = llvm::DINode::FlagAppleBlock;
- unsigned LineNo = 0;
-
- auto *EltTy =
- DBuilder.createStructType(Unit, "__block_descriptor", nullptr, LineNo,
- FieldOffset, 0, Flags, nullptr, Elements);
-
- // Bit size, align and offset of the type.
- uint64_t Size = CGM.getContext().getTypeSize(Ty);
-
- auto *DescTy = DBuilder.createPointerType(EltTy, Size);
-
- FieldOffset = 0;
+ // Blocks in OpenCL have unique constraints which make the standard fields
+ // redundant while requiring size and align fields for enqueue_kernel. See
+ // initializeForBlockHeader in CGBlocks.cpp
if (CGM.getLangOpts().OpenCL) {
FType = CGM.getContext().IntTy;
EltTys.push_back(CreateMemberType(Unit, FType, "__size", &FieldOffset));
@@ -984,21 +967,53 @@
FType = CGM.getContext().getPointerType(Ty->getPointeeType());
EltTys.push_back(CreateMemberType(Unit, FType, "__FuncPtr", &FieldOffset));
FType = CGM.getContext().getPointerType(CGM.getContext().VoidTy);
- FieldSize = CGM.getContext().getTypeSize(Ty);
- FieldAlign = CGM.getContext().getTypeAlign(Ty);
+ uint64_t FieldSize = CGM.getContext().getTypeSize(Ty);
+ uint32_t FieldAlign = CGM.getContext().getTypeAlign(Ty);
EltTys.push_back(DBuilder.createMemberType(
- Unit, "__descriptor", nullptr, LineNo, FieldSize, FieldAlign, FieldOffset,
- llvm::DINode::FlagZero, DescTy));
+ Unit, "__descriptor", nullptr, LineNo, FieldSize, FieldAlign,
+ FieldOffset, llvm::DINode::FlagZero, DescTy));
FieldOffset += FieldSize;
}
+ return FieldOffset;
+}
+
+llvm::DIType *CGDebugInfo::CreateType(const BlockPointerType *Ty,
+ llvm::DIFile *Unit) {
+ SmallVector<llvm::Metadata *, 8> EltTys;
+ QualType FType;
+ uint64_t FieldOffset;
+ llvm::DINodeArray Elements;
+
+ FieldOffset = 0;
+ FType = CGM.getContext().UnsignedLongTy;
+ EltTys.push_back(CreateMemberType(Unit, FType, "reserved", &FieldOffset));
+ EltTys.push_back(CreateMemberType(Unit, FType, "Size", &FieldOffset));
+
+ Elements = DBuilder.getOrCreateArray(EltTys);
+ EltTys.clear();
+
+ llvm::DINode::DIFlags Flags = llvm::DINode::FlagAppleBlock;
+
+ auto *EltTy =
+ DBuilder.createStructType(Unit, "__block_descriptor", nullptr, 0,
+ FieldOffset, 0, Flags, nullptr, Elements);
+
+ // Bit size, align and offset of the type.
+ uint64_t Size = CGM.getContext().getTypeSize(Ty);
+
+ auto *DescTy = DBuilder.createPointerType(EltTy, Size);
+
+ FieldOffset = collectDefaultElementTypesForBlockPointer(Ty, Unit, DescTy,
+ 0, EltTys);
+
Elements = DBuilder.getOrCreateArray(EltTys);
// The __block_literal_generic structs are marked with a special
// DW_AT_APPLE_BLOCK attribute and are an implementation detail only
// the debugger needs to know about. To allow type uniquing, emit
// them without a name or a location.
- EltTy = DBuilder.createStructType(Unit, "", nullptr, LineNo, FieldOffset, 0,
+ EltTy = DBuilder.createStructType(Unit, "", nullptr, 0, FieldOffset, 0,
Flags, nullptr, Elements);
return DBuilder.createPointerType(EltTy, Size);
@@ -3830,6 +3845,44 @@
}
} // namespace
+void CGDebugInfo::collectDefaultFieldsForBlockLiteralDeclare(
+ const CGBlockInfo &Block, const ASTContext &Context, SourceLocation Loc,
+ const llvm::StructLayout &BlockLayout, llvm::DIFile *Unit,
+ SmallVectorImpl<llvm::Metadata *> &Fields) {
+ // Blocks in OpenCL have unique constraints which make the standard fields
+ // redundant while requiring size and align fields for enqueue_kernel. See
+ // initializeForBlockHeader in CGBlocks.cpp
+ if (CGM.getLangOpts().OpenCL) {
+ Fields.push_back(createFieldType("__size", Context.IntTy, Loc, AS_public,
+ BlockLayout.getElementOffsetInBits(0),
+ Unit, Unit));
+ Fields.push_back(createFieldType("__align", Context.IntTy, Loc, AS_public,
+ BlockLayout.getElementOffsetInBits(1),
+ Unit, Unit));
+ } else {
+ Fields.push_back(createFieldType("__isa", Context.VoidPtrTy, Loc, AS_public,
+ BlockLayout.getElementOffsetInBits(0),
+ Unit, Unit));
+ Fields.push_back(createFieldType("__flags", Context.IntTy, Loc, AS_public,
+ BlockLayout.getElementOffsetInBits(1),
+ Unit, Unit));
+ Fields.push_back(
+ createFieldType("__reserved", Context.IntTy, Loc, AS_public,
+ BlockLayout.getElementOffsetInBits(2), Unit, Unit));
+ auto *FnTy = Block.getBlockExpr()->getFunctionType();
+ auto FnPtrType = CGM.getContext().getPointerType(FnTy->desugar());
+ Fields.push_back(createFieldType("__FuncPtr", FnPtrType, Loc, AS_public,
+ BlockLayout.getElementOffsetInBits(3),
+ Unit, Unit));
+ Fields.push_back(createFieldType(
+ "__descriptor",
+ Context.getPointerType(Block.NeedsCopyDispose
+ ? Context.getBlockDescriptorExtendedType()
+ : Context.getBlockDescriptorType()),
+ Loc, AS_public, BlockLayout.getElementOffsetInBits(4), Unit, Unit));
+ }
+}
+
void CGDebugInfo::EmitDeclareOfBlockLiteralArgVariable(const CGBlockInfo &block,
StringRef Name,
unsigned ArgNo,
@@ -3852,35 +3905,8 @@
CGM.getDataLayout().getStructLayout(block.StructureType);
SmallVector<llvm::Metadata *, 16> fields;
- if (CGM.getLangOpts().OpenCL) {
- fields.push_back(createFieldType("__size", C.IntTy, loc, AS_public,
- blockLayout->getElementOffsetInBits(0),
- tunit, tunit));
- fields.push_back(createFieldType("__align", C.IntTy, loc, AS_public,
- blockLayout->getElementOffsetInBits(1),
- tunit, tunit));
- } else {
- fields.push_back(createFieldType("__isa", C.VoidPtrTy, loc, AS_public,
- blockLayout->getElementOffsetInBits(0),
- tunit, tunit));
- fields.push_back(createFieldType("__flags", C.IntTy, loc, AS_public,
- blockLayout->getElementOffsetInBits(1),
- tunit, tunit));
- fields.push_back(createFieldType("__reserved", C.IntTy, loc, AS_public,
- blockLayout->getElementOffsetInBits(2),
- tunit, tunit));
- auto *FnTy = block.getBlockExpr()->getFunctionType();
- auto FnPtrType = CGM.getContext().getPointerType(FnTy->desugar());
- fields.push_back(createFieldType("__FuncPtr", FnPtrType, loc, AS_public,
- blockLayout->getElementOffsetInBits(3),
- tunit, tunit));
- fields.push_back(createFieldType(
- "__descriptor",
- C.getPointerType(block.NeedsCopyDispose
- ? C.getBlockDescriptorExtendedType()
- : C.getBlockDescriptorType()),
- loc, AS_public, blockLayout->getElementOffsetInBits(4), tunit, tunit));
- }
+ collectDefaultFieldsForBlockLiteralDeclare(block, C, loc, *blockLayout, tunit,
+ fields);
// We want to sort the captures by offset, not because DWARF
// requires this, but because we're paranoid about debuggers.
diff --git a/clang/lib/CodeGen/CGDebugInfo.h b/clang/lib/CodeGen/CGDebugInfo.h
index e632806..95cba9d 100644
--- a/clang/lib/CodeGen/CGDebugInfo.h
+++ b/clang/lib/CodeGen/CGDebugInfo.h
@@ -311,6 +311,22 @@
void AppendAddressSpaceXDeref(unsigned AddressSpace,
SmallVectorImpl<int64_t> &Expr) const;
+ /// A helper function to collect debug info for the default elements of a
+ /// block.
+ ///
+ /// \returns The next available field offset after the default elements.
+ uint64_t collectDefaultElementTypesForBlockPointer(
+ const BlockPointerType *Ty, llvm::DIFile *Unit,
+ llvm::DIDerivedType *DescTy, unsigned LineNo,
+ SmallVectorImpl<llvm::Metadata *> &EltTys);
+
+ /// A helper function to collect debug info for the default fields of a
+ /// block.
+ void collectDefaultFieldsForBlockLiteralDeclare(
+ const CGBlockInfo &Block, const ASTContext &Context, SourceLocation Loc,
+ const llvm::StructLayout &BlockLayout, llvm::DIFile *Unit,
+ SmallVectorImpl<llvm::Metadata *> &Fields);
+
public:
CGDebugInfo(CodeGenModule &CGM);
~CGDebugInfo();