From: Chris Lattner <sabre@nondot.org>
Date: Sun, 9 Nov 2003 03:32:52 +0000 (+0000)
Subject: Add support for memmove
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=67ce57ac49da7e3ca58df573c81d91175784b433;p=oota-llvm.git

Add support for memmove


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9824 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Analysis/DataStructure/Local.cpp b/lib/Analysis/DataStructure/Local.cpp
index f3406b76990..0aca21a437b 100644
--- a/lib/Analysis/DataStructure/Local.cpp
+++ b/lib/Analysis/DataStructure/Local.cpp
@@ -446,6 +446,15 @@ void GraphBuilder::visitCallSite(CallSite CS) {
         if (DSNode *N = RetNH.getNode())
           N->setModifiedMarker();
         return;
+      } else if (F->getName() == "memmove") {
+        // Merge the first & second arguments with the result, and mark the
+        // memory read and modified.
+        DSNodeHandle RetNH = getValueDest(*CS.getInstruction());
+        RetNH.mergeWith(getValueDest(**CS.arg_begin()));
+        RetNH.mergeWith(getValueDest(**(CS.arg_begin()+1)));
+        if (DSNode *N = RetNH.getNode())
+          N->setModifiedMarker()->setReadMarker();
+        return;
       } else if (F->getName() == "bzero") {
         // Mark the memory modified.
         DSNodeHandle H = getValueDest(**CS.arg_begin());