From c830aee8e8187456a2fc396081d4171aaa4e82da Mon Sep 17 00:00:00 2001
From: Devang Patel <dpatel@apple.com>
Date: Fri, 24 Aug 2007 06:02:25 +0000
Subject: [PATCH] Reject ICMP_NE as index split condition.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41357 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/Scalar/LoopIndexSplit.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/Transforms/Scalar/LoopIndexSplit.cpp b/lib/Transforms/Scalar/LoopIndexSplit.cpp
index 6b69ecefef0..93d6309c484 100644
--- a/lib/Transforms/Scalar/LoopIndexSplit.cpp
+++ b/lib/Transforms/Scalar/LoopIndexSplit.cpp
@@ -338,6 +338,9 @@ void LoopIndexSplit::findSplitCondition() {
     if (!CI || CI == ExitCondition)
       return;
 
+    if (CI->getPredicate() == ICmpInst::ICMP_NE)
+      return;
+
     // If one operand is loop invariant and second operand is SCEVAddRecExpr
     // based on induction variable then CI is a candidate split condition.
     Value *V0 = CI->getOperand(0);