Don't increment invalid iterator.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42178 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Transforms/Scalar/LoopIndexSplit.cpp b/lib/Transforms/Scalar/LoopIndexSplit.cpp
index d30f18d91b6c1d836abf768b833af905e0a4002b..9e2f11bb6dea4aa7ce466bbb21fa1c6833988e21 100644 (file)
--- a/lib/Transforms/Scalar/LoopIndexSplit.cpp
+++ b/lib/Transforms/Scalar/LoopIndexSplit.cpp
@@ -928,8 +928,9 @@ void LoopIndexSplit::removeBlocks(BasicBlock *DeadBB, Loop *LP,
   while (!WorkList.empty()) {
     BasicBlock *BB = WorkList.back(); WorkList.pop_back();
     for(BasicBlock::iterator BBI = BB->begin(), BBE = BB->end(); 
-        BBI != BBE; ++BBI) {
+        BBI != BBE; ) {
       Instruction *I = BBI;
+      ++BBI;
       I->replaceAllUsesWith(UndefValue::get(I->getType()));
       I->eraseFromParent();
     }