maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

Add some caching here for the builtin types. 

rdar://12117935

llvm-svn: 162066
This commit is contained in:
Eric Christopher 2012-08-16 23:50:46 +00:00
parent c34d391ca2
commit 476e5a3c9e
2 changed files with 30 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
clang/lib/CodeGen/CGDebugInfo.cpp
View File

@ -349,42 +349,54 @@ llvm::DIType CGDebugInfo::CreateType(const BuiltinType *BT) {
case BuiltinType::Void:
return llvm::DIType();
case BuiltinType::ObjCClass:
return DBuilder.createForwardDecl(llvm::dwarf::DW_TAG_structure_type,
"objc_class", TheCU,
getOrCreateMainFile(), 0);
if (ClassTy.Verify())
return ClassTy;
ClassTy = DBuilder.createForwardDecl(llvm::dwarf::DW_TAG_structure_type,
"objc_class", TheCU,
getOrCreateMainFile(), 0);
return ClassTy;
case BuiltinType::ObjCId: {
// typedef struct objc_class *Class;
// typedef struct objc_object {
// Class isa;
// } *id;
// TODO: Cache these two types to avoid duplicates.
llvm::DIType OCTy =
DBuilder.createForwardDecl(llvm::dwarf::DW_TAG_structure_type,
"objc_class", TheCU, getOrCreateMainFile(), 0);
if (ObjTy.Verify())
return ObjTy;
if (!ClassTy.Verify())
ClassTy = DBuilder.createForwardDecl(llvm::dwarf::DW_TAG_structure_type,
"objc_class", TheCU,
getOrCreateMainFile(), 0);
unsigned Size = CGM.getContext().getTypeSize(CGM.getContext().VoidPtrTy);
llvm::DIType ISATy = DBuilder.createPointerType(OCTy, Size);
llvm::DIType ISATy = DBuilder.createPointerType(ClassTy, Size);
llvm::MDNode *ObjTy = DBuilder.createStructType(TheCU, "objc_object",
getOrCreateMainFile(),
0, 0, 0, 0, llvm::DIArray());
llvm::MDNode *ObjNode = DBuilder.createStructType(TheCU, "objc_object",
getOrCreateMainFile(),
0, 0, 0, 0,
llvm::DIArray());
SmallVector<llvm::Value *, 1> EltTys;
llvm::DIType FieldTy =
DBuilder.createMemberType(llvm::DIDescriptor(ObjTy), "isa",
DBuilder.createMemberType(llvm::DIDescriptor(ObjNode), "isa",
getOrCreateMainFile(), 0, Size,
0, 0, 0, ISATy);
EltTys.push_back(FieldTy);
llvm::DIArray Elements = DBuilder.getOrCreateArray(EltTys);
ObjTy->replaceOperandWith(10, Elements);
return llvm::DIType(ObjTy);
ObjNode->replaceOperandWith(10, Elements);
ObjTy = llvm::DIType(ObjTy);
return ObjTy;
}
case BuiltinType::ObjCSel: {
return
if (SelTy.Verify())
return SelTy;
SelTy =
DBuilder.createForwardDecl(llvm::dwarf::DW_TAG_structure_type,
"objc_selector", TheCU, getOrCreateMainFile(),
0);
return SelTy;
}
case BuiltinType::UChar:
case BuiltinType::Char_U: Encoding = llvm::dwarf::DW_ATE_unsigned_char; break;

3
clang/lib/CodeGen/CGDebugInfo.h
View File

@ -50,6 +50,9 @@ class CGDebugInfo {
llvm::DICompileUnit TheCU;
SourceLocation CurLoc, PrevLoc;
llvm::DIType VTablePtrType;
llvm::DIType ClassTy;
llvm::DIType ObjTy;
llvm::DIType SelTy;
/// TypeCache - Cache of previously constructed Types.
llvm::DenseMap<void *, llvm::WeakVH> TypeCache;