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Fix a bad iterator dereference that Evan uncovered.

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llvm-svn: 133978
This commit is contained in:
Jakob Stoklund Olesen
2011-06-28 01:18:58 +00:00
parent 16896325a6
commit 040d659206
1 changed files with 4 additions and 2 deletions
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6
llvm/lib/CodeGen/SplitKit.cpp
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@@ -76,12 +76,14 @@ SlotIndex SplitAnalysis::computeLastSplitPoint(unsigned Num) {
return LSP.first;
// There may not be a call instruction (?) in which case we ignore LPad.
LSP.second = LSP.first;
for (MachineBasicBlock::const_iterator I = FirstTerm, E = MBB->begin();
I != E; --I)
for (MachineBasicBlock::const_iterator I = MBB->end(), E = MBB->begin();
I != E;) {
--I;
if (I->getDesc().isCall()) {
LSP.second = LIS.getInstructionIndex(I);
break;
}
}
}
// If CurLI is live into a landing pad successor, move the last split point