From: Chris Lattner <sabre@nondot.org>
Date: Mon, 23 Nov 2009 16:38:54 +0000 (+0000)
Subject: add a helper
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=c46530b6a32a53edf0d6d32bcd09ea5d76940472;p=oota-llvm.git

add a helper


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89662 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/llvm/Analysis/AliasAnalysis.h b/include/llvm/Analysis/AliasAnalysis.h
index 0b3199d234d..2d43bddf7e0 100644
--- a/include/llvm/Analysis/AliasAnalysis.h
+++ b/include/llvm/Analysis/AliasAnalysis.h
@@ -94,6 +94,13 @@ public:
   virtual AliasResult alias(const Value *V1, unsigned V1Size,
                             const Value *V2, unsigned V2Size);
 
+  /// isNoAlias - A trivial helper function to check to see if the specified
+  /// pointers are no-alias.
+  bool isNoAlias(const Value *V1, unsigned V1Size,
+                 const Value *V2, unsigned V2Size) {
+    return alias(V1, V1Size, V2, V2Size) == NoAlias;
+  }
+
   /// pointsToConstantMemory - If the specified pointer is known to point into
   /// constant global memory, return true.  This allows disambiguation of store
   /// instructions from constant pointers.