From 57b0b312576f5edd4fa3f36ffcd46dc519b2317a Mon Sep 17 00:00:00 2001
From: Devang Patel <dpatel@apple.com>
Date: Thu, 20 Sep 2007 23:01:50 +0000
Subject: [PATCH] Don't increment invalid iterator.

llvm-svn: 42178
---
 lib/Transforms/Scalar/LoopIndexSplit.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/Transforms/Scalar/LoopIndexSplit.cpp b/lib/Transforms/Scalar/LoopIndexSplit.cpp
index d30f18d91b6..9e2f11bb6de 100644
--- 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();
     }