Daniil Seredkin 6643e51d79 [InstCombine] Fold (sext bool X) * (sext bool X) to zext (and X, X) ...

InstCombine didn't perform (sext bool X) * (sext bool X) --> zext (and X, X) which can result in just (zext X). The patch adds regression tests to check this transformation and adds a check for equality of mul's operands for that case.

Differential Revision: https://reviews.llvm.org/D104193

2021-06-18 16:28:06 +07:00

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