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Fix a crash related to updating Phi nodes in the original header block. This was
causing a crash in 175.vpr git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29887 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -269,7 +269,8 @@ bool LoopUnroll::visitLoop(Loop *L) {
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if (isa<Instruction>(InVal))
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InVal = LastValueMap[InVal];
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(*SI)->removeIncomingValue(LatchBlock, false);
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(*SI)->addIncoming(InVal, cast<BasicBlock>(LastValueMap[LatchBlock]));
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if (InVal)
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(*SI)->addIncoming(InVal, cast<BasicBlock>(LastValueMap[LatchBlock]));
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}
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}
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