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Fix debug info for anon union. 

This is tested by anon-union.exp.

llvm-svn: 116372
This commit is contained in:
Devang Patel 2010-10-12 23:24:54 +00:00
parent e25b5f86d0
commit 67f70aaf5a
2 changed files with 46 additions and 12 deletions
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57
clang/lib/CodeGen/CGDebugInfo.cpp
View File

@ -144,7 +144,6 @@ CGDebugInfo::getClassName(RecordDecl *RD) {
char *StrPtr = DebugInfoNames.Allocate<char>(Buffer.length()); char *StrPtr = DebugInfoNames.Allocate<char>(Buffer.length());
memcpy(StrPtr, Buffer.data(), Buffer.length()); memcpy(StrPtr, Buffer.data(), Buffer.length());
return llvm::StringRef(StrPtr, Buffer.length()); return llvm::StringRef(StrPtr, Buffer.length());
} }
/// getOrCreateFile - Get the file debug info descriptor for the input location. /// getOrCreateFile - Get the file debug info descriptor for the input location.
@ -1793,18 +1792,52 @@ void CGDebugInfo::EmitDeclare(const VarDecl *VD, unsigned Tag,
unsigned Flags = 0; unsigned Flags = 0;
if (VD->isImplicit()) if (VD->isImplicit())
Flags |= llvm::DIDescriptor::FlagArtificial; Flags |= llvm::DIDescriptor::FlagArtificial;
// Create the descriptor for the variable.
llvm::DIVariable D =
DebugFactory.CreateVariable(Tag, llvm::DIDescriptor(RegionStack.back()),
VD->getName(), Unit, Line, Ty,
CGM.getLangOptions().Optimize, Flags);
// Insert an llvm.dbg.declare into the current block.
llvm::Instruction *Call =
DebugFactory.InsertDeclare(Storage, D, Builder.GetInsertBlock());
llvm::MDNode *Scope = RegionStack.back(); llvm::MDNode *Scope = RegionStack.back();
Call->setDebugLoc(llvm::DebugLoc::get(Line, Column, Scope));
llvm::StringRef Name = VD->getName();
if (!Name.empty()) {
// Create the descriptor for the variable.
llvm::DIVariable D =
DebugFactory.CreateVariable(Tag, llvm::DIDescriptor(Scope),
Name, Unit, Line, Ty,
CGM.getLangOptions().Optimize, Flags);
// Insert an llvm.dbg.declare into the current block.
llvm::Instruction *Call =
DebugFactory.InsertDeclare(Storage, D, Builder.GetInsertBlock());
Call->setDebugLoc(llvm::DebugLoc::get(Line, Column, Scope));
}
// If VD is an anonymous union then Storage represents value for
// all union fields.
if (const RecordType *RT = dyn_cast<RecordType>(VD->getType()))
if (const RecordDecl *RD = dyn_cast<RecordDecl>(RT->getDecl()))
if (RD->isUnion()) {
for (RecordDecl::field_iterator I = RD->field_begin(),
E = RD->field_end();
I != E; ++I) {
FieldDecl *Field = *I;
llvm::DIType FieldTy = getOrCreateType(Field->getType(), Unit);
llvm::StringRef FieldName = Field->getName();
// Ignore unnamed fields. Do not ignore unnamed records.
if (FieldName.empty() && !isa<RecordType>(Field->getType()))
continue;
// Use VarDecl's Tag, Scope and Line number.
llvm::DIVariable D =
DebugFactory.CreateVariable(Tag, llvm::DIDescriptor(Scope),
FieldName, Unit, Line, FieldTy,
CGM.getLangOptions().Optimize, Flags);
// Insert an llvm.dbg.declare into the current block.
llvm::Instruction *Call =
DebugFactory.InsertDeclare(Storage, D, Builder.GetInsertBlock());
Call->setDebugLoc(llvm::DebugLoc::get(Line, Column, Scope));
}
}
} }
/// EmitDeclare - Emit local variable declaration debug info. /// EmitDeclare - Emit local variable declaration debug info.

1
clang/lib/CodeGen/CGDebugInfo.h
View File

@ -233,6 +233,7 @@ private:
/// name is constructred on demand (e.g. C++ destructor) then the name /// name is constructred on demand (e.g. C++ destructor) then the name
/// is stored on the side. /// is stored on the side.
llvm::StringRef getFunctionName(const FunctionDecl *FD); llvm::StringRef getFunctionName(const FunctionDecl *FD);
/// getObjCMethodName - Returns the unmangled name of an Objective-C method. /// getObjCMethodName - Returns the unmangled name of an Objective-C method.
/// This is the display name for the debugging info. /// This is the display name for the debugging info.
llvm::StringRef getObjCMethodName(const ObjCMethodDecl *FD); llvm::StringRef getObjCMethodName(const ObjCMethodDecl *FD);