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Don't insert DBG_VALUE instructions after the first terminator.

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For one, MachineBasicBlock::getFirstTerminator() doesn't understand what is
happening, and it also makes sense to have all control flow run through the
DBG_VALUE.

llvm-svn: 123277
This commit is contained in:
Jakob Stoklund Olesen 2011-01-11 22:11:16 +00:00
parent 05ef00f4dc
commit 1cd577b435
1 changed files with 7 additions and 0 deletions
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7
lib/CodeGen/LiveDebugVariables.cpp
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@ -587,6 +587,13 @@ findInsertLocation(MachineBasicBlock *MBB, SlotIndex Idx, DebugLoc &DL,
SlotIndex Start = LIS.getMBBStartIdx(MBB);
Idx = Idx.getBaseIndex();
// Don't insert anything after the first terminator.
MachineBasicBlock::iterator Term = MBB->getFirstTerminator();
if (Term != MBB->end() && Idx >= LIS.getInstructionIndex(Term)) {
DL = Term->getDebugLoc();
return Term;
}
// Try to find an insert location by going backwards from Idx.
MachineInstr *MI;
while (!(MI = LIS.getInstructionFromIndex(Idx))) {