From edf349aba6ad809d1c41d79d5eb10079cad69a6e Mon Sep 17 00:00:00 2001
From: Andrew Lenharth <andrewl@lenharth.org>
Date: Wed, 19 Apr 2006 15:34:02 +0000
Subject: deal with memchr

llvm-svn: 27830
---
 llvm/lib/Analysis/DataStructure/Local.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'llvm/lib/Analysis/DataStructure/Local.cpp')

diff --git a/llvm/lib/Analysis/DataStructure/Local.cpp b/llvm/lib/Analysis/DataStructure/Local.cpp
index 75d1f4e0bdc..738a105e2c6 100644
--- a/llvm/lib/Analysis/DataStructure/Local.cpp
+++ b/llvm/lib/Analysis/DataStructure/Local.cpp
@@ -636,6 +636,13 @@ void GraphBuilder::visitCallSite(CallSite CS) {
                 N->setReadMarker();
           }
           return;
+        } else if (F->getName() == "memchr") {
+          DSNodeHandle RetNH = getValueDest(**CS.arg_begin());
+          DSNodeHandle Result = getValueDest(*CS.getInstruction());
+          RetNH.mergeWith(Result);
+          if (DSNode *N = RetNH.getNode())
+            N->setReadMarker();
+          return;
         } else if (F->getName() == "read" || F->getName() == "pipe" ||
                    F->getName() == "wait" || F->getName() == "time") {
           // These functions write all of their pointer operands.
-- 
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