DBG_VALUE machine instruction pointing to undefined register for a variable justify a separate scope if the variable is inlined function's argument.
Radar 8122864.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106792 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 89993ae..abd42dc 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -2390,8 +2390,6 @@
static bool hasValidLocation(LLVMContext &Ctx,
const MachineInstr *MInsn,
const MDNode *&Scope, const MDNode *&InlinedAt) {
- if (MInsn->isDebugValue())
- return false;
DebugLoc DL = MInsn->getDebugLoc();
if (DL.isUnknown()) return false;
@@ -2655,7 +2653,6 @@
assert (MI->getNumOperands() > 1 && "Invalid machine instruction!");
DIVariable DV(MI->getOperand(MI->getNumOperands() - 1).getMetadata());
if (!DV.Verify()) continue;
- if (isDbgValueInUndefinedReg(MI)) continue;
// If DBG_VALUE is for a local variable then it needs a label.
if (DV.getTag() != dwarf::DW_TAG_arg_variable)
InsnNeedsLabel.insert(MI);
@@ -2663,7 +2660,7 @@
else if (!DISubprogram(DV.getContext()).describes(MF->getFunction()))
InsnNeedsLabel.insert(MI);
// DBG_VALUE indicating argument location change needs a label.
- else if (!ProcessedArgs.insert(DV))
+ else if (isDbgValueInUndefinedReg(MI) == false && !ProcessedArgs.insert(DV))
InsnNeedsLabel.insert(MI);
} else {
// If location is unknown then instruction needs a location only if