Fix a crash related to updating Phi nodes in the original header block. This was

causing a crash in 175.vpr llvm-svn: 29887
2006-08-25 22:13:55 +00:00 · 2006-08-25 22:13:55 +00:00 · 403b95af47
parent 8e4b029573
commit 403b95af47
1 changed files with 2 additions and 1 deletions
--- a/llvm/lib/Transforms/Scalar/LoopUnroll.cpp
+++ b/llvm/lib/Transforms/Scalar/LoopUnroll.cpp
@ -269,6 +269,7 @@ bool LoopUnroll::visitLoop(Loop *L) {
      if (isa<Instruction>(InVal))
        InVal = LastValueMap[InVal];
      (*SI)->removeIncomingValue(LatchBlock, false);
+      if (InVal)
        (*SI)->addIncoming(InVal, cast<BasicBlock>(LastValueMap[LatchBlock]));
    }
  }