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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
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@ -2390,8 +2390,6 @@ DbgScope *DwarfDebug::getOrCreateDbgScope(const MDNode *Scope, const MDNode *Inl
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static bool hasValidLocation(LLVMContext &Ctx,
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const MachineInstr *MInsn,
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const MDNode *&Scope, const MDNode *&InlinedAt) {
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if (MInsn->isDebugValue())
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return false;
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DebugLoc DL = MInsn->getDebugLoc();
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if (DL.isUnknown()) return false;
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@ -2655,7 +2653,6 @@ void DwarfDebug::beginFunction(const MachineFunction *MF) {
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assert (MI->getNumOperands() > 1 && "Invalid machine instruction!");
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DIVariable DV(MI->getOperand(MI->getNumOperands() - 1).getMetadata());
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if (!DV.Verify()) continue;
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if (isDbgValueInUndefinedReg(MI)) continue;
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// If DBG_VALUE is for a local variable then it needs a label.
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if (DV.getTag() != dwarf::DW_TAG_arg_variable)
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InsnNeedsLabel.insert(MI);
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@ -2663,7 +2660,7 @@ void DwarfDebug::beginFunction(const MachineFunction *MF) {
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else if (!DISubprogram(DV.getContext()).describes(MF->getFunction()))
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InsnNeedsLabel.insert(MI);
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// DBG_VALUE indicating argument location change needs a label.
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else if (!ProcessedArgs.insert(DV))
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else if (isDbgValueInUndefinedReg(MI) == false && !ProcessedArgs.insert(DV))
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InsnNeedsLabel.insert(MI);
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} else {
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// If location is unknown then instruction needs a location only if
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15
test/FrontendC/2010-06-24-DbgInlinedFnParameter.c
Normal file
15
test/FrontendC/2010-06-24-DbgInlinedFnParameter.c
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@ -0,0 +1,15 @@
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// RUN: %llvmgcc -S -O2 -g %s -o - | llc -O2 -o %t.s
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// RUN: grep "# DW_TAG_formal_parameter" %t.s | count 4
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// Radar 8122864
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static int foo(int a, int j) {
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int k = 0;
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if (a)
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k = a + j;
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else
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k = j;
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return k;
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}
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int bar(int o, int p) {
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return foo(o, p);
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}
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