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| author | Dan Gohman <gohman@apple.com> | 2010-08-04 22:56:29 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2010-08-04 22:56:29 +0000 |
| commit | bd33dab633b92e427db24858804053e895e70436 (patch) | |
| tree | d9cdf43eb3418a6aa1ac5d6a2005ca703065988a /llvm/lib/Analysis/BasicAliasAnalysis.cpp | |
| parent | 8aaadea8ef135678bbb9520e074e5e68eeedcb7f (diff) | |
| download | bcm5719-llvm-bd33dab633b92e427db24858804053e895e70436.tar.gz bcm5719-llvm-bd33dab633b92e427db24858804053e895e70436.zip | |
The two-callsite form of AliasAnalysis::getModRefInfo is documented
to return Ref if the left callsite only reads memory read or written
by the right callsite; fix BasicAliasAnalysis to implement this.
Add AliasAnalysisEvaluator support for testing the two-callsite
form of getModRefInfo.
llvm-svn: 110270
Diffstat (limited to 'llvm/lib/Analysis/BasicAliasAnalysis.cpp')
| -rw-r--r-- | llvm/lib/Analysis/BasicAliasAnalysis.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/llvm/lib/Analysis/BasicAliasAnalysis.cpp b/llvm/lib/Analysis/BasicAliasAnalysis.cpp index 6bb84d4e458..ac06e9a2c9d 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 they both only read from memory, just return ref. - if (CS1B == OnlyReadsMemory && CS2B == OnlyReadsMemory) + // If CS1 only reads from memory, just return ref. + if (CS1B == OnlyReadsMemory) return Ref; // Otherwise, fall back to NoAA (mod+ref). |
