From 8de8b7bf40b26c086f6f5bde1dcfd1427ad7fa0f Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Tue, 29 Mar 2005 17:44:52 +0000
Subject: [PATCH] there is no point comparing against null pointer.

llvm-svn: 20925
---
 llvm/lib/Analysis/AliasAnalysisEvaluator.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/llvm/lib/Analysis/AliasAnalysisEvaluator.cpp b/llvm/lib/Analysis/AliasAnalysisEvaluator.cpp
index 593dbedea800..c4ec8db3e1c7 100644
--- a/llvm/lib/Analysis/AliasAnalysisEvaluator.cpp
+++ b/llvm/lib/Analysis/AliasAnalysisEvaluator.cpp
@@ -17,10 +17,11 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include "llvm/Constants.h"
+#include "llvm/DerivedTypes.h"
 #include "llvm/Function.h"
 #include "llvm/Instructions.h"
 #include "llvm/Pass.h"
-#include "llvm/DerivedTypes.h"
 #include "llvm/Analysis/Passes.h"
 #include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/Assembly/Writer.h"
@@ -115,7 +116,7 @@ bool AAEval::runOnFunction(Function &F) {
         isa<Function>(Inst.getOperand(0)))
       ++OI;  // Skip actual functions for direct function calls.
     for (; OI != Inst.op_end(); ++OI)
-      if (isa<PointerType>((*OI)->getType()))
+      if (isa<PointerType>((*OI)->getType()) && !isa<ConstantPointerNull>(*OI))
         Pointers.insert(*OI);
 
     CallSite CS = CallSite::get(&*I);