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[RISCV] Improve selection for vector fpclass.

Authored by jacquesguan on Jun 1 2023, 9:14 PM.



Since vfclass intruction will only set one single bit in the result, so if we only want to check 1 fp class, we could use vmseq to do it.

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jacquesguan created this revision.Jun 1 2023, 9:14 PM
Herald added a project: Restricted Project. · View Herald TranscriptJun 1 2023, 9:14 PM
jacquesguan requested review of this revision.Jun 1 2023, 9:14 PM
craig.topper added inline comments.Jun 2 2023, 9:57 AM

bool IsOneBitMask = isPowerOf2_32(TDCMask)

Address comment.

jacquesguan marked an inline comment as done.Jun 4 2023, 7:52 PM
This revision is now accepted and ready to land.Jun 5 2023, 5:23 PM
This revision was automatically updated to reflect the committed changes.