diff options
| 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 | 3dcc91ee8c48f210d302937ecbbf0d277f8b656e (patch) | |
| tree | 51a96163cfbba2cd870af97f498c96bd4776d518 /lib/Analysis/BasicAliasAnalysis.cpp | |
| parent | abf7bdffd67689781a5104b13fa806b92f3e96e1 (diff) | |
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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110270 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Analysis/BasicAliasAnalysis.cpp')
| -rw-r--r-- | lib/Analysis/BasicAliasAnalysis.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/Analysis/BasicAliasAnalysis.cpp b/lib/Analysis/BasicAliasAnalysis.cpp index 6bb84d4e45..ac06e9a2c9 100644 --- a/lib/Analysis/BasicAliasAnalysis.cpp +++ b/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). |