From 474cecf0e9bca95ab7091a341784550c7eb1e887 Mon Sep 17 00:00:00 2001
From: Dan Gohman <gohman@apple.com>
Date: Mon, 23 Feb 2009 16:29:41 +0000
Subject: [PATCH] IndVarSimplify preserves ScalarEvolution. In the
 -std-compile-opts sequence, this avoids the need for ScalarEvolution to be
 rerun before LoopDeletion.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65318 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/Scalar/IndVarSimplify.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/Transforms/Scalar/IndVarSimplify.cpp b/lib/Transforms/Scalar/IndVarSimplify.cpp
index 3e9615c849a..1207dbf8e34 100644
--- a/lib/Transforms/Scalar/IndVarSimplify.cpp
+++ b/lib/Transforms/Scalar/IndVarSimplify.cpp
@@ -81,6 +81,7 @@ namespace {
      AU.addRequiredID(LCSSAID);
      AU.addRequiredID(LoopSimplifyID);
      AU.addRequired<LoopInfo>();
+     AU.addPreserved<ScalarEvolution>();
      AU.addPreservedID(LoopSimplifyID);
      AU.addPreservedID(LCSSAID);
      AU.setPreservesCFG();
-- 
2.34.1