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| author | Chris Lattner <sabre@nondot.org> | 2011-01-03 21:03:33 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2011-01-03 21:03:33 +0000 |
| commit | 16e42128c24f5df8a61cfd2e6cdf3bd3966db0c5 (patch) | |
| tree | 5dfc380adc19d64738b91972f2767124a8797ae1 /llvm/lib/Analysis/BasicAliasAnalysis.cpp | |
| parent | 12fa3c6a94af24ef5029fbd65723128aa9875226 (diff) | |
| download | llvm-16e42128c24f5df8a61cfd2e6cdf3bd3966db0c5.zip llvm-16e42128c24f5df8a61cfd2e6cdf3bd3966db0c5.tar.gz llvm-16e42128c24f5df8a61cfd2e6cdf3bd3966db0c5.tar.bz2 | |
fix rdar://8813415 - a miscompilation of 164.gzip that loop-idiom
exposed. It turns out to be a latent bug in basicaa, scary.
llvm-svn: 122772
Diffstat (limited to 'llvm/lib/Analysis/BasicAliasAnalysis.cpp')
| -rw-r--r-- | llvm/lib/Analysis/BasicAliasAnalysis.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/Analysis/BasicAliasAnalysis.cpp b/llvm/lib/Analysis/BasicAliasAnalysis.cpp index 1a526fc..8e0637a 100644 --- a/llvm/lib/Analysis/BasicAliasAnalysis.cpp +++ b/llvm/lib/Analysis/BasicAliasAnalysis.cpp @@ -103,6 +103,8 @@ static bool isObjectSmallerThan(const Value *V, uint64_t Size, const TargetData &TD) { const Type *AccessTy; if (const GlobalVariable *GV = dyn_cast<GlobalVariable>(V)) { + if (!GV->hasDefinitiveInitializer()) + return false; AccessTy = GV->getType()->getElementType(); } else if (const AllocaInst *AI = dyn_cast<AllocaInst>(V)) { if (!AI->isArrayAllocation()) |