If an aggregate argument is passed indirectly because it has non trivial
destructor or copy constructor than let debug info know about it.
Radar 8945514.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125142 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGDebugInfo.cpp b/lib/CodeGen/CGDebugInfo.cpp
index ccf9c50..cb907d4 100644
--- a/lib/CodeGen/CGDebugInfo.cpp
+++ b/lib/CodeGen/CGDebugInfo.cpp
@@ -1735,7 +1735,8 @@
/// EmitDeclare - Emit local variable declaration debug info.
void CGDebugInfo::EmitDeclare(const VarDecl *VD, unsigned Tag,
- llvm::Value *Storage, CGBuilderTy &Builder) {
+ llvm::Value *Storage, CGBuilderTy &Builder,
+ bool IndirectArgument) {
assert(!RegionStack.empty() && "Region stack mismatch, stack empty!");
llvm::DIFile Unit = getOrCreateFile(VD->getLocation());
@@ -1751,6 +1752,12 @@
if (!Ty)
return;
+ // If an aggregate variable has non trivial destructor or non trivial copy
+ // constructor than it is pass indirectly. Let debug info know about this
+ // by using reference of the aggregate type as a argument type.
+ if (IndirectArgument && VD->getType()->isRecordType())
+ Ty = DBuilder.CreateReferenceType(Ty);
+
// Get location information.
unsigned Line = getLineNumber(VD->getLocation());
unsigned Column = getColumnNumber(VD->getLocation());
@@ -1911,8 +1918,10 @@
/// EmitDeclareOfArgVariable - Emit call to llvm.dbg.declare for an argument
/// variable declaration.
void CGDebugInfo::EmitDeclareOfArgVariable(const VarDecl *VD, llvm::Value *AI,
- CGBuilderTy &Builder) {
- EmitDeclare(VD, llvm::dwarf::DW_TAG_arg_variable, AI, Builder);
+ CGBuilderTy &Builder,
+ bool IndirectArgument) {
+ EmitDeclare(VD, llvm::dwarf::DW_TAG_arg_variable, AI, Builder,
+ IndirectArgument);
}