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Don't dereference MBB->end().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49043 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -408,7 +408,7 @@ void StrongPHIElimination::processBlock(MachineBasicBlock* MBB) {
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// Iterate over all the PHI nodes in this block
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MachineBasicBlock::iterator P = MBB->begin();
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while (P->getOpcode() == TargetInstrInfo::PHI) {
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while (P != MBB->end() && P->getOpcode() == TargetInstrInfo::PHI) {
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unsigned DestReg = P->getOperand(0).getReg();
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// Don't both doing PHI elimination for dead PHI's.
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