Veera 4cdcf3b193 [InstCombine] Fold (trunc nuw A to i1) == (trunc nuw B to i1) to A == B (#133368) ...

Fixes #133344

Proof: https://alive2.llvm.org/ce/z/X3Uh23 

InstCombine couldn't optimize `i1` because `canonicalizeICmpBool()` was
transforming the comparison into bitwise operations before
`foldICmpTruncWithTruncOrExt()` was called.

This PR solves the ordering issue by placing
`foldICmpTruncWithTruncOrExt()` before `canonicalizeICmpBool()`.

I believe this will not cause any regressions since all tests are
passing.

2025-03-28 08:32:45 -04:00

332 KiB

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