commit 34fa82f7e82a2845a42d0a2725e70412d06c917b
author Dan Gohman <gohman@apple.com> Thu Aug 05 00:43:10 2010 +0000
committer Dan Gohman <gohman@apple.com> Thu Aug 05 00:43:10 2010 +0000
tree af45083a524e0493b13276141600d93e2adbcb27
parent 1d9125a6ff192f1346d2b08bbf6ecc9c9e44103d

Revert r110270 for now. It appears to uncover a memdep bug.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110293 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Analysis/BasicAliasAnalysis.cpp

diff --git a/lib/Analysis/BasicAliasAnalysis.cpp b/lib/Analysis/BasicAliasAnalysis.cpp
index ac06e9a..6bb84d4 100644
--- a/lib/Analysis/BasicAliasAnalysis.cpp
+++ b/lib/Analysis/BasicAliasAnalysis.cpp
@@ -425,8 +425,8 @@
   ModRefBehavior CS2B = AliasAnalysis::getModRefBehavior(CS2);
   if (CS2B == DoesNotAccessMemory) return NoModRef;
   
-  // If CS1 only reads from memory, just return ref.
-  if (CS1B == OnlyReadsMemory)
+  // If they both only read from memory, just return ref.
+  if (CS1B == OnlyReadsMemory && CS2B == OnlyReadsMemory)
     return Ref;
   
   // Otherwise, fall back to NoAA (mod+ref).