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Do not require line number entry for undefined local variable. 

This is a regression caused by r106792 and caught by gdb testsuite.

llvm-svn: 107430
This commit is contained in:
Devang Patel 2010-07-01 21:38:08 +00:00
parent 8453ddb5fe
commit 429397529a
1 changed files with 4 additions and 2 deletions
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6
llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
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@ -2690,10 +2690,12 @@ void DwarfDebug::beginFunction(const MachineFunction *MF) {
DIVariable DV(MI->getOperand(MI->getNumOperands() - 1).getMetadata());
if (!DV.Verify()) continue;
// If DBG_VALUE is for a local variable then it needs a label.
if (DV.getTag() != dwarf::DW_TAG_arg_variable)
if (DV.getTag() != dwarf::DW_TAG_arg_variable
&& isDbgValueInUndefinedReg(MI) == false)
InsnNeedsLabel.insert(MI);
// DBG_VALUE for inlined functions argument needs a label.
else if (!DISubprogram(DV.getContext()).describes(MF->getFunction()))
else if (!DISubprogram(getDISubprogram(DV.getContext())).
describes(MF->getFunction()))
InsnNeedsLabel.insert(MI);
// DBG_VALUE indicating argument location change needs a label.
else if (isDbgValueInUndefinedReg(MI) == false && !ProcessedArgs.insert(DV))