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| author | Benjamin Kramer <benny.kra@googlemail.com> | 2016-05-17 12:08:55 +0000 |
|---|---|---|
| committer | Benjamin Kramer <benny.kra@googlemail.com> | 2016-05-17 12:08:55 +0000 |
| commit | ca9a0fe2b926e3821cf4485e7bd9b59407b474f2 (patch) | |
| tree | 02eee702f827611dc5c76659442fb7c5ffc1cd0b /llvm/lib/Transforms/InstCombine | |
| parent | 6c1d74a094ddb477bc17aacc2ef37532104eb8d5 (diff) | |
| download | bcm5719-llvm-ca9a0fe2b926e3821cf4485e7bd9b59407b474f2.tar.gz bcm5719-llvm-ca9a0fe2b926e3821cf4485e7bd9b59407b474f2.zip | |
[InstCombine] Don't crash when trying to take an element of a ConstantExpr.
Fixes PR27786.
llvm-svn: 269757
Diffstat (limited to 'llvm/lib/Transforms/InstCombine')
| -rw-r--r-- | llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp index 18036356c92..447c43763f3 100644 --- a/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp +++ b/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp @@ -3132,6 +3132,9 @@ static ICmpInst *canonicalizeCmpWithConstant(ICmpInst &I) { unsigned NumElts = Op1Type->getVectorNumElements(); for (unsigned i = 0; i != NumElts; ++i) { Constant *Elt = Op1C->getAggregateElement(i); + if (!Elt) + return nullptr; + if (isa<UndefValue>(Elt)) continue; // Bail out if we can't determine if this constant is min/max or if we |
