[llvm] [AArch64] Convert comparisons with 1 and -1 to 0 if it is profitable (PR #141151)

[via llvm-commits]

AZero13 wrote:

Note: The patch works perfectly fine as-is, hence why it is not a draft; it is just that it is written in a way that does need improvements.

https://github.com/llvm/llvm-project/pull/141151