[llvm] [FastISel][AArch64] Compare Instruction Miscompilation Fix (PR #75993)

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brendaso1 wrote:

I have a check that is failing but I am not sure what the cause is.... It looks like the last tests that failed are on MLIR: https://buildkite.com/llvm-project/github-pull-requests/builds/25125 , but my fix has nothing to do with that part of the code, and all the automated checks were passing a few days ago. Is it because this branch does not have the most up-to-date commits as main? Should I merge / rebase my branch to main in this case? 

https://github.com/llvm/llvm-project/pull/75993