diff options
| -rw-r--r-- | lib/Transforms/Scalar/IndVarSimplify.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/Transforms/Scalar/IndVarSimplify.cpp b/lib/Transforms/Scalar/IndVarSimplify.cpp index 369be47..ed5aca3 100644 --- a/lib/Transforms/Scalar/IndVarSimplify.cpp +++ b/lib/Transforms/Scalar/IndVarSimplify.cpp @@ -140,6 +140,8 @@ static bool TransformLoop(LoopInfo *Loops, Loop *Loop) { DEBUG(IV->print(std::cerr)); + while (isa<PHINode>(AfterPHIIt)) ++AfterPHIIt; + // Don't do math with pointers... const Type *IVTy = IV->Phi->getType(); if (isa<PointerType>(IVTy)) IVTy = Type::ULongTy; @@ -204,6 +206,9 @@ static bool TransformLoop(LoopInfo *Loops, Loop *Loop) { PHIOps.insert(PHIOps.end(), MaybeDead->op_begin(), MaybeDead->op_end()); MaybeDead->getParent()->getInstList().erase(MaybeDead); + + // Erasing the instruction could invalidate the AfterPHI iterator! + AfterPHIIt = Header->begin(); } } |