recommit r108131 (hich has been backed out in r108135) with a fix
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108137 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/TailDuplication.cpp b/lib/Transforms/Scalar/TailDuplication.cpp
index 2306a77..9208238 100644
--- a/lib/Transforms/Scalar/TailDuplication.cpp
+++ b/lib/Transforms/Scalar/TailDuplication.cpp
@@ -206,12 +206,13 @@
// there is only one other pred, get it, otherwise we can't handle it.
PI = pred_begin(DstBlock); PE = pred_end(DstBlock);
BasicBlock *DstOtherPred = 0;
- if (*PI == SrcBlock) {
+ BasicBlock *P = *PI;
+ if (P == SrcBlock) {
if (++PI == PE) return 0;
DstOtherPred = *PI;
if (++PI != PE) return 0;
} else {
- DstOtherPred = *PI;
+ DstOtherPred = P;
if (++PI == PE || *PI != SrcBlock || ++PI != PE) return 0;
}