From 403ac2ece33046c58b66fffa105184f44fa4527e Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Mon, 23 Nov 2009 16:46:41 +0000
Subject: use the new isNoAlias method to simplify some code, only do an
 escaping check if we have a non-constant pointer.  Constant pointers can't be
 local.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89665 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Analysis/AliasAnalysis.cpp | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

(limited to 'lib/Analysis/AliasAnalysis.cpp')

diff --git a/lib/Analysis/AliasAnalysis.cpp b/lib/Analysis/AliasAnalysis.cpp
index 92fa1df..dee9b53 100644
--- a/lib/Analysis/AliasAnalysis.cpp
+++ b/lib/Analysis/AliasAnalysis.cpp
@@ -127,17 +127,18 @@ AliasAnalysis::getModRefBehavior(Function *F,
 
 AliasAnalysis::ModRefResult
 AliasAnalysis::getModRefInfo(CallSite CS, Value *P, unsigned Size) {
-  ModRefResult Mask = ModRef;
   ModRefBehavior MRB = getModRefBehavior(CS);
   if (MRB == DoesNotAccessMemory)
     return NoModRef;
-  else if (MRB == OnlyReadsMemory)
+  
+  ModRefResult Mask = ModRef;
+  if (MRB == OnlyReadsMemory)
     Mask = Ref;
   else if (MRB == AliasAnalysis::AccessesArguments) {
     bool doesAlias = false;
     for (CallSite::arg_iterator AI = CS.arg_begin(), AE = CS.arg_end();
          AI != AE; ++AI)
-      if (alias(*AI, ~0U, P, Size) != NoAlias) {
+      if (!isNoAlias(*AI, ~0U, P, Size)) {
         doesAlias = true;
         break;
       }
-- 
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