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[AArch64] Take cmn into account when adjusting compare constants #97774

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[AArch64] Take cmn into account when adjusting compare constants #97774

wants to merge 1 commit into from

Commits on Jul 4, 2024

  1. [AArch64] Take cmn folding of the right hand side into account when f… 

    …olding

Turning a cmp into cmn saves an extra mov and negate instruction, so take that into account when choosing when to flip the compare operands.

Also do not consider right-hand operands whose absolute value can be encoded into a cmn.

Revert "[AArch64] Take cmn folding of the right hand side into account when folding"

This reverts commit 213d1cb.

[AArch64] Take cmn into account when adjusting compare constants
    @AreaZR
    AreaZR committed Jul 4, 2024
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