From: Devang Patel <dpatel@apple.com>
Date: Mon, 30 Jul 2007 20:19:59 +0000 (+0000)
Subject: LICM preserves scalar evolution and dom frontier.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=96b651c627160e1ea0f1bb86d352d697e6c1972d;p=oota-llvm.git

LICM preserves scalar evolution and dom frontier.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40602 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/Scalar/LICM.cpp b/lib/Transforms/Scalar/LICM.cpp
index 77ac5634bd9..a4aa12ababd 100644
--- a/lib/Transforms/Scalar/LICM.cpp
+++ b/lib/Transforms/Scalar/LICM.cpp
@@ -42,6 +42,7 @@
 #include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/Analysis/AliasSetTracker.h"
 #include "llvm/Analysis/Dominators.h"
+#include "llvm/Analysis/ScalarEvolution.h"
 #include "llvm/Transforms/Utils/PromoteMemToReg.h"
 #include "llvm/Support/CFG.h"
 #include "llvm/Support/Compiler.h"
@@ -78,6 +79,8 @@ namespace {
       AU.addRequired<DominatorTree>();
       AU.addRequired<DominanceFrontier>();  // For scalar promotion (mem2reg)
       AU.addRequired<AliasAnalysis>();
+      AU.addPreserved<ScalarEvolution>();
+      AU.addPreserved<DominanceFrontier>();
     }
 
     bool doFinalization() {