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| author | dim <dim@FreeBSD.org> | 2012-08-19 10:31:50 +0000 |
|---|---|---|
| committer | dim <dim@FreeBSD.org> | 2012-08-19 10:31:50 +0000 |
| commit | 4dc93743c9d40c29c0a3bec2aae328cac0d289e8 (patch) | |
| tree | e7da40d2f6ef824f7371860826845870e6e1dcd5 /lib/Analysis/MemoryBuiltins.cpp | |
| parent | 721c201bd55ffb73cb2ba8d39e0570fa38c44e15 (diff) | |
| download | FreeBSD-src-4dc93743c9d40c29c0a3bec2aae328cac0d289e8.zip FreeBSD-src-4dc93743c9d40c29c0a3bec2aae328cac0d289e8.tar.gz | |
Vendor import of llvm trunk r162107:
http://llvm.org/svn/llvm-project/llvm/trunk@162107
Diffstat (limited to 'lib/Analysis/MemoryBuiltins.cpp')
| -rw-r--r-- | lib/Analysis/MemoryBuiltins.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/Analysis/MemoryBuiltins.cpp b/lib/Analysis/MemoryBuiltins.cpp index c0cc27b..e77d2ff 100644 --- a/lib/Analysis/MemoryBuiltins.cpp +++ b/lib/Analysis/MemoryBuiltins.cpp @@ -473,6 +473,10 @@ ObjectSizeOffsetVisitor::visitExtractValueInst(ExtractValueInst&) { } SizeOffsetType ObjectSizeOffsetVisitor::visitGEPOperator(GEPOperator &GEP) { + // Ignore self-referencing GEPs, they can occur in unreachable code. + if (&GEP == GEP.getPointerOperand()) + return unknown(); + SizeOffsetType PtrData = compute(GEP.getPointerOperand()); if (!bothKnown(PtrData) || !GEP.hasAllConstantIndices()) return unknown(); |
