PHI->removeIncomingValue may remove PHInode.

Increment iterator in advance.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48890 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Transforms/Scalar/LoopIndexSplit.cpp b/lib/Transforms/Scalar/LoopIndexSplit.cpp
index 513cad8a5666207f9625201ee9d33b7d3559b352..8053554c17c12d13764797c19c224ada0dc5a4e5 100644 (file)
--- a/lib/Transforms/Scalar/LoopIndexSplit.cpp
+++ b/lib/Transforms/Scalar/LoopIndexSplit.cpp
@@ -1647,8 +1647,9 @@ void LoopIndexSplit::updatePHINodes(BasicBlock *ExitBB, BasicBlock *Latch,
                                     Loop *LP) {
 
   for (BasicBlock::iterator BI = ExitBB->begin(), BE = ExitBB->end(); 
-       BI != BE; ++BI) {
+       BI != BE; ) {
     PHINode *PN = dyn_cast<PHINode>(BI);
+    ++BI;
     if (!PN)
       break;