From 554b012f6738f9d2abe817029deec40471bbba71 Mon Sep 17 00:00:00 2001 From: Dan Gohman Date: Thu, 5 Aug 2010 00:43:10 +0000 Subject: Revert r110270 for now. It appears to uncover a memdep bug. llvm-svn: 110293 --- llvm/lib/Analysis/BasicAliasAnalysis.cpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'llvm/lib/Analysis/BasicAliasAnalysis.cpp') diff --git a/llvm/lib/Analysis/BasicAliasAnalysis.cpp b/llvm/lib/Analysis/BasicAliasAnalysis.cpp index ac06e9a2c9d..6bb84d4e458 100644 --- a/llvm/lib/Analysis/BasicAliasAnalysis.cpp +++ b/llvm/lib/Analysis/BasicAliasAnalysis.cpp @@ -425,8 +425,8 @@ BasicAliasAnalysis::getModRefInfo(ImmutableCallSite CS1, 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). -- cgit v1.2.3