[PATCH] Call Type::isVectorTy() before calling Type::getVectorNumElements

[Akira Hatanaka]

The attached patch adds code in InstCombiner::FoldSelectOpOp that checks if
a Type is a vector before calling function Type::getVectorNumElements.
Without this fix, the following command asserts:

$ opt instcombine1.ll -o instcombine1.bc -O3

Please review.
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