From d869b3847f1dee78e1e4e1ed3cb41bd3ab0a079c Mon Sep 17 00:00:00 2001
From: Duncan Sands <baldrick@free.fr>
Date: Sat, 14 Feb 2009 10:56:35 +0000
Subject: Generalize some alias analysis logic from atomic intrinsics to any
 IntrWriteArgMem intrinsics.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64551 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Analysis/AliasAnalysis.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

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

diff --git a/lib/Analysis/AliasAnalysis.cpp b/lib/Analysis/AliasAnalysis.cpp
index 67b2faac55..c5523ec463 100644
--- a/lib/Analysis/AliasAnalysis.cpp
+++ b/lib/Analysis/AliasAnalysis.cpp
@@ -124,8 +124,13 @@ AliasAnalysis::getModRefBehavior(Function *F,
     if (F->doesNotAccessMemory())
       // Can't do better than this.
       return DoesNotAccessMemory;
-    else if (F->onlyReadsMemory())
+    if (F->onlyReadsMemory())
       return OnlyReadsMemory;
+    if (unsigned id = F->getIntrinsicID()) {
+#define GET_INTRINSIC_MODREF_BEHAVIOR
+#include "llvm/Intrinsics.gen"
+#undef GET_INTRINSIC_MODREF_BEHAVIOR
+    }
   }
   return UnknownModRefBehavior;
 }
-- 
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