Do not create a replaceable Variables MDNode for function forward decls.

These fields would need to be explicitly deleted before we RAUW the temporary
node anyway (this was done in cfe commit r222373). Instead, do not create
these useless nodes in the first place.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222434 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Frederic Riss 2014-11-20 15:52:34 +00:00
parent 0cb85a3b69
commit 594bf484e4

View File

@ -937,11 +937,10 @@ createFunctionHelper(LLVMContext &VMContext, DIDescriptor Context, StringRef Nam
StringRef LinkageName, DIFile File, unsigned LineNo,
DICompositeType Ty, bool isLocalToUnit, bool isDefinition,
unsigned ScopeLine, unsigned Flags, bool isOptimized,
Function *Fn, MDNode *TParams, MDNode *Decl,
Function *Fn, MDNode *TParams, MDNode *Decl, MDNode *Vars,
std::function<MDNode *(ArrayRef<Value *>)> CreateFunc) {
assert(Ty.getTag() == dwarf::DW_TAG_subroutine_type &&
"function types should be subroutines");
Value *TElts[] = {HeaderBuilder::get(DW_TAG_base_type).get(VMContext)};
Value *Elts[] = {
HeaderBuilder::get(dwarf::DW_TAG_subprogram)
.concat(Name)
@ -957,7 +956,7 @@ createFunctionHelper(LLVMContext &VMContext, DIDescriptor Context, StringRef Nam
.concat(ScopeLine)
.get(VMContext),
File.getFileNode(), DIScope(getNonCompileUnitScope(Context)).getRef(), Ty,
nullptr, Fn, TParams, Decl, MDNode::getTemporary(VMContext, TElts)};
nullptr, Fn, TParams, Decl, Vars};
DISubprogram S(CreateFunc(Elts));
assert(S.isSubprogram() &&
@ -976,6 +975,7 @@ DISubprogram DIBuilder::createFunction(DIDescriptor Context, StringRef Name,
return createFunctionHelper(VMContext, Context, Name, LinkageName, File,
LineNo, Ty, isLocalToUnit, isDefinition, ScopeLine,
Flags, isOptimized, Fn, TParams, Decl,
MDNode::getTemporary(VMContext, None),
[&] (ArrayRef<Value *> Elts) -> MDNode *{
MDNode *Node = MDNode::get(VMContext, Elts);
// Create a named metadata so that we
@ -996,7 +996,7 @@ DIBuilder::createTempFunctionFwdDecl(DIDescriptor Context, StringRef Name,
MDNode *TParams, MDNode *Decl) {
return createFunctionHelper(VMContext, Context, Name, LinkageName, File,
LineNo, Ty, isLocalToUnit, isDefinition, ScopeLine,
Flags, isOptimized, Fn, TParams, Decl,
Flags, isOptimized, Fn, TParams, Decl, nullptr,
[&] (ArrayRef<Value *> Elts) {
return MDNode::getTemporary(VMContext, Elts);
});