[llvm] [ConstraintElim] Check the other signedness when hasSameSign (PR #128168)

[Yingwei Zheng via llvm-commits]

dtcxzyw wrote:

I implemented the same feature last year :) https://github.com/llvm/llvm-project/commit/33c92a07b3a831778592b60962cced91d0b07275
Maybe it caused some regressions in real-world programs.

Compile-time impact: https://llvm-compile-time-tracker.com/compare.php?from=d1a7225076218ce224cd29c74259b715b393dc9d&to=33c92a07b3a831778592b60962cced91d0b07275&stat=instructions:u



https://github.com/llvm/llvm-project/pull/128168