[llvm] VectorCombine: teach foldExtractedCmps about samesign (PR #122883)

[Ramkumar Ramachandra via llvm-commits]

artagnon wrote:

Thanks, the issue is in CmpPredicate::getMatching() that implicitly assumes that both predicates are from integer-compares. Will fix shortly.

https://github.com/llvm/llvm-project/pull/122883