ARM USAT instruction not generated after #82478

[UsmanNadeem]

Example: https://godbolt.org/z/rx1hzhhYz

#82478 canonicalizes signed minmax into unsigned which seems to be breaking some patterns.

[llvmbot]

@llvm/issue-subscribers-backend-arm

Author: Usman Nadeem (UsmanNadeem)

Example: https://godbolt.org/z/rx1hzhhYz

#82478 canonicalizes signed minmax into unsigned which seems to be breaking some patterns.

[UsmanNadeem]

CodeGen diff after running arm usat.ll test file through opt -O2: https://godbolt.org/z/1aWfosMvo
Patterns were added here: https://reviews.llvm.org/D119819

cc: @davemgreen

[dtcxzyw]

I will revert the transform in DAGCombine :)