From 7a2ca56ef3bdda6874bcd4df2910fb5a33999f85 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Thu, 4 Aug 2005 19:26:19 +0000
Subject: [PATCH] Fix a case that caused this to crash on 178.galgel

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22653 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/Scalar/LoopStrengthReduce.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/lib/Transforms/Scalar/LoopStrengthReduce.cpp
index 7b743e230e8..dfe72c11fcd 100644
--- a/lib/Transforms/Scalar/LoopStrengthReduce.cpp
+++ b/lib/Transforms/Scalar/LoopStrengthReduce.cpp
@@ -415,6 +415,12 @@ static SCEVHandle GetImmediateValues(SCEVHandle Val, bool isAddress, Loop *L) {
     return GetImmediateValues(SARE->getStart(), isAddress, L);
   }
 
+  if (!Val->isLoopInvariant(L)) {
+    // If this is a loop-variant expression, it must stay in the immediate
+    // field of the expression.
+    return Val;
+  }
+    
   return SCEVUnknown::getIntegerSCEV(0, Val->getType());
 }