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

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110293 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2010-08-05 00:43:10 +00:00
parent 1d9125a6ff
commit 34fa82f7e8
2 changed files with 3 additions and 2 deletions
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4
lib/Analysis/BasicAliasAnalysis.cpp
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@ -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).

1
test/Analysis/BasicAA/getmodrefinfo-cs-cs.ll
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@ -1,4 +1,5 @@
; RUN: opt < %s -aa-eval -print-all-alias-modref-info -disable-output |& FileCheck %s
; XFAIL: *
; CHECK: Just Ref: call void @ro() <-> call void @f0()