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| author | rdivacky <rdivacky@FreeBSD.org> | 2010-05-04 16:11:02 +0000 |
|---|---|---|
| committer | rdivacky <rdivacky@FreeBSD.org> | 2010-05-04 16:11:02 +0000 |
| commit | 750ce4d809c7e2a298a389a512a17652ff5be3f2 (patch) | |
| tree | 70fbd90da02177c8e6ef82adba9fa8ace285a5e3 /lib/Analysis/BasicAliasAnalysis.cpp | |
| parent | 5f970ec96e421f64db6b1c6509a902ea73d98cc7 (diff) | |
| download | FreeBSD-src-750ce4d809c7e2a298a389a512a17652ff5be3f2.zip FreeBSD-src-750ce4d809c7e2a298a389a512a17652ff5be3f2.tar.gz | |
Update LLVM to r103004.
Diffstat (limited to 'lib/Analysis/BasicAliasAnalysis.cpp')
| -rw-r--r-- | lib/Analysis/BasicAliasAnalysis.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/Analysis/BasicAliasAnalysis.cpp b/lib/Analysis/BasicAliasAnalysis.cpp index 31a649d..cfe7a1c 100644 --- a/lib/Analysis/BasicAliasAnalysis.cpp +++ b/lib/Analysis/BasicAliasAnalysis.cpp @@ -655,6 +655,11 @@ BasicAliasAnalysis::aliasPHI(const PHINode *PN, unsigned PNSize, AliasAnalysis::AliasResult BasicAliasAnalysis::aliasCheck(const Value *V1, unsigned V1Size, const Value *V2, unsigned V2Size) { + // If either of the memory references is empty, it doesn't matter what the + // pointer values are. + if (V1Size == 0 || V2Size == 0) + return NoAlias; + // Strip off any casts if they exist. V1 = V1->stripPointerCasts(); V2 = V2->stripPointerCasts(); |
