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Debug info: Emit distinct __block_literal_generic types for blocks with

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different function signatures. (Previously clang would emit all block
pointer types with the type of the first block pointer in the compile
unit.)

rdar://problem/21602473

llvm-svn: 241534
This commit is contained in:
Adrian Prantl
2015-07-07 00:49:35 +00:00
parent 9fe7f2396b
commit 3d2c051cf6
3 changed files with 29 additions and 13 deletions
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12
clang/lib/CodeGen/CGDebugInfo.cpp
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@@ -705,9 +705,6 @@ llvm::DIType *CGDebugInfo::getOrCreateStructPtrType(StringRef Name,
llvm::DIType *CGDebugInfo::CreateType(const BlockPointerType *Ty,
llvm::DIFile *Unit) {
if (BlockLiteralGeneric)
return BlockLiteralGeneric;
SmallVector<llvm::Metadata *, 8> EltTys;
QualType FType;
uint64_t FieldSize, FieldOffset;
@@ -753,12 +750,15 @@ llvm::DIType *CGDebugInfo::CreateType(const BlockPointerType *Ty,
FieldOffset += FieldSize;
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, "__block_literal_generic", nullptr, LineNo,
DBuilder.createStructType(Unit, "", nullptr, LineNo,
FieldOffset, 0, Flags, nullptr, Elements);
BlockLiteralGeneric = DBuilder.createPointerType(EltTy, Size);
return BlockLiteralGeneric;
return DBuilder.createPointerType(EltTy, Size);
}
llvm::DIType *CGDebugInfo::CreateType(const TemplateSpecializationType *Ty,