Sanjay Patel ae1bc9ebf3 [InstCombine] avoid infinite loop from vector select transforms ...

The 2nd test is based on the fuzzer example in post-commit
comments of D101191 -
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=34661

The 1st test shows that we don't deal with this symmetrically.
We should be able to reduce both examples (possibly in
instsimplify instead of instcombine).

2021-05-25 13:28:38 -04:00

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