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| author | Nuno Lopes <nunoplopes@sapo.pt> | 2012-07-20 23:07:40 +0000 |
|---|---|---|
| committer | Nuno Lopes <nunoplopes@sapo.pt> | 2012-07-20 23:07:40 +0000 |
| commit | c606c3ff911eddcbf8bab95e67c7d8c1f69a493e (patch) | |
| tree | 419225500a5672a9cb93e01358f2de62a7e5a6f3 /lib/Analysis | |
| parent | 78435f6bb7574d3d26f8c5151e2c140c525b7994 (diff) | |
| download | llvm-c606c3ff911eddcbf8bab95e67c7d8c1f69a493e.tar.gz llvm-c606c3ff911eddcbf8bab95e67c7d8c1f69a493e.tar.bz2 llvm-c606c3ff911eddcbf8bab95e67c7d8c1f69a493e.tar.xz | |
baby steps toward fixing some problems with inbound GEPs that overflow, as discussed 2 months ago or so.
Make sure we do not emit index computations with NSW flags so that we dont get an undef value if the GEP overflows
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160589 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Analysis')
| -rw-r--r-- | lib/Analysis/MemoryBuiltins.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/Analysis/MemoryBuiltins.cpp b/lib/Analysis/MemoryBuiltins.cpp index 39edaaf1c4..8d99ec3e56 100644 --- a/lib/Analysis/MemoryBuiltins.cpp +++ b/lib/Analysis/MemoryBuiltins.cpp @@ -645,7 +645,7 @@ ObjectSizeOffsetEvaluator::visitGEPOperator(GEPOperator &GEP) { if (!bothKnown(PtrData)) return unknown(); - Value *Offset = EmitGEPOffset(&Builder, *TD, &GEP); + Value *Offset = EmitGEPOffset(&Builder, *TD, &GEP, /*NoAssumptions=*/true); Offset = Builder.CreateAdd(PtrData.second, Offset); return std::make_pair(PtrData.first, Offset); } |