diff options
Diffstat (limited to 'lib/Analysis/DebugInfo.cpp')
| -rw-r--r-- | lib/Analysis/DebugInfo.cpp | 104 |
1 files changed, 37 insertions, 67 deletions
diff --git a/lib/Analysis/DebugInfo.cpp b/lib/Analysis/DebugInfo.cpp index 11a56bdf7d..6b27cf4162 100644 --- a/lib/Analysis/DebugInfo.cpp +++ b/lib/Analysis/DebugInfo.cpp @@ -367,71 +367,10 @@ Constant *DIFactory::GetStringConstant(const std::string &String) { return Slot = ConstantExpr::getBitCast(StrGV, DestTy); } -/// GetOrCreateAnchor - Look up an anchor for the specified tag and name. If it -/// already exists, return it. If not, create a new one and return it. -DIAnchor DIFactory::GetOrCreateAnchor(unsigned TAG, const char *Name) { - const Type *EltTy = StructType::get(Type::Int32Ty, Type::Int32Ty, NULL); - - // Otherwise, create the global or return it if already in the module. - Constant *C = M.getOrInsertGlobal(Name, EltTy); - assert(isa<GlobalVariable>(C) && "Incorrectly typed anchor?"); - GlobalVariable *GV = cast<GlobalVariable>(C); - - // If it has an initializer, it is already in the module. - if (GV->hasInitializer()) - return SubProgramAnchor = DIAnchor(GV); - - GV->setLinkage(GlobalValue::LinkOnceAnyLinkage); - GV->setSection("llvm.metadata"); - GV->setConstant(true); - M.addTypeName("llvm.dbg.anchor.type", EltTy); - - // Otherwise, set the initializer. - Constant *Elts[] = { - GetTagConstant(dwarf::DW_TAG_anchor), - ConstantInt::get(Type::Int32Ty, TAG) - }; - - GV->setInitializer(ConstantStruct::get(Elts, 2)); - return DIAnchor(GV); -} - - - //===----------------------------------------------------------------------===// // DIFactory: Primary Constructors //===----------------------------------------------------------------------===// -/// GetOrCreateCompileUnitAnchor - Return the anchor for compile units, -/// creating a new one if there isn't already one in the module. -DIAnchor DIFactory::GetOrCreateCompileUnitAnchor() { - // If we already created one, just return it. - if (!CompileUnitAnchor.isNull()) - return CompileUnitAnchor; - return CompileUnitAnchor = GetOrCreateAnchor(dwarf::DW_TAG_compile_unit, - "llvm.dbg.compile_units"); -} - -/// GetOrCreateSubprogramAnchor - Return the anchor for subprograms, -/// creating a new one if there isn't already one in the module. -DIAnchor DIFactory::GetOrCreateSubprogramAnchor() { - // If we already created one, just return it. - if (!SubProgramAnchor.isNull()) - return SubProgramAnchor; - return SubProgramAnchor = GetOrCreateAnchor(dwarf::DW_TAG_subprogram, - "llvm.dbg.subprograms"); -} - -/// GetOrCreateGlobalVariableAnchor - Return the anchor for globals, -/// creating a new one if there isn't already one in the module. -DIAnchor DIFactory::GetOrCreateGlobalVariableAnchor() { - // If we already created one, just return it. - if (!GlobalVariableAnchor.isNull()) - return GlobalVariableAnchor; - return GlobalVariableAnchor = GetOrCreateAnchor(dwarf::DW_TAG_variable, - "llvm.dbg.global_variables"); -} - /// GetOrCreateArray - Create an descriptor for an array of descriptors. /// This implicitly uniques the arrays created. DIArray DIFactory::GetOrCreateArray(DIDescriptor *Tys, unsigned NumTys) { @@ -494,7 +433,7 @@ DICompileUnit DIFactory::CreateCompileUnit(unsigned LangID, unsigned RunTimeVer) { Constant *Elts[] = { GetTagConstant(dwarf::DW_TAG_compile_unit), - getCastToEmpty(GetOrCreateCompileUnitAnchor()), + Constant::getNullValue(EmptyStructPtr), ConstantInt::get(Type::Int32Ty, LangID), GetStringConstant(Filename), GetStringConstant(Directory), @@ -509,7 +448,7 @@ DICompileUnit DIFactory::CreateCompileUnit(unsigned LangID, M.addTypeName("llvm.dbg.compile_unit.type", Init->getType()); GlobalVariable *GV = new GlobalVariable(Init->getType(), true, - GlobalValue::InternalLinkage, + GlobalValue::LinkOnceAnyLinkage, Init, "llvm.dbg.compile_unit", &M); GV->setSection("llvm.metadata"); return DICompileUnit(GV); @@ -655,7 +594,7 @@ DISubprogram DIFactory::CreateSubprogram(DIDescriptor Context, Constant *Elts[] = { GetTagConstant(dwarf::DW_TAG_subprogram), - getCastToEmpty(GetOrCreateSubprogramAnchor()), + Constant::getNullValue(EmptyStructPtr), getCastToEmpty(Context), GetStringConstant(Name), GetStringConstant(DisplayName), @@ -671,7 +610,7 @@ DISubprogram DIFactory::CreateSubprogram(DIDescriptor Context, M.addTypeName("llvm.dbg.subprogram.type", Init->getType()); GlobalVariable *GV = new GlobalVariable(Init->getType(), true, - GlobalValue::InternalLinkage, + GlobalValue::LinkOnceAnyLinkage, Init, "llvm.dbg.subprogram", &M); GV->setSection("llvm.metadata"); return DISubprogram(GV); @@ -687,7 +626,7 @@ DIFactory::CreateGlobalVariable(DIDescriptor Context, const std::string &Name, bool isDefinition, llvm::GlobalVariable *Val) { Constant *Elts[] = { GetTagConstant(dwarf::DW_TAG_variable), - getCastToEmpty(GetOrCreateGlobalVariableAnchor()), + Constant::getNullValue(EmptyStructPtr), getCastToEmpty(Context), GetStringConstant(Name), GetStringConstant(DisplayName), @@ -704,7 +643,7 @@ DIFactory::CreateGlobalVariable(DIDescriptor Context, const std::string &Name, M.addTypeName("llvm.dbg.global_variable.type", Init->getType()); GlobalVariable *GV = new GlobalVariable(Init->getType(), true, - GlobalValue::InternalLinkage, + GlobalValue::LinkOnceAnyLinkage, Init, "llvm.dbg.global_variable", &M); GV->setSection("llvm.metadata"); return DIGlobalVariable(GV); @@ -954,6 +893,36 @@ namespace llvm { Unit.getDirectory(Dir); return true; } + + /// CollectDebugInfoAnchors - Collect debugging information anchors. + void CollectDebugInfoAnchors(Module &M, + SmallVector<GlobalVariable *, 2> &CUs, + SmallVector<GlobalVariable *, 4> &GVs, + SmallVector<GlobalVariable *, 4> &SPs) { + + for (Module::global_iterator GVI = M.global_begin(), E = M.global_end(); + GVI != E; GVI++) { + GlobalVariable *GV = GVI; + if (GV->hasName() && strncmp(GV->getNameStart(), "llvm.dbg", 8) == 0 + && GV->isConstant() && GV->hasInitializer()) { + DICompileUnit C(GV); + if (C.isNull() == false) { + CUs.push_back(GV); + continue; + } + DIGlobalVariable G(GV); + if (G.isNull() == false) { + GVs.push_back(GV); + continue; + } + DISubprogram S(GV); + if (S.isNull() == false) { + SPs.push_back(GV); + continue; + } + } + } + } } /// dump - Print descriptor. @@ -1077,3 +1046,4 @@ void DIVariable::dump() const { getType().dump(); cerr << "\n"; } + |