ICL065: move elimination broken in Ice Lake

By: anon (anon.delete@this.ymous.org),
Room: Moderated Discussions
Travis Downs (travis.downs.delete@this.gmail.com) on March 5, 2021 11:01 pm wrote:
> Forgot to link to Twitter where this was reported.

Would be interesting to benchmark. I doubt performance loss will be huge (> 1%) but it still sucks to have to give up a performance feature that has been implemented in several CPU generations. Do we know if they disabled all move elimination or just the GPR move elimination ?
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ICL065: move elimination broken in Ice LakeTravis Downs
  ICL065: move elimination broken in Ice LakeTravis Downs
    ICL065: move elimination broken in Ice Lakeanon
      ICL065: move elimination broken in Ice LakeTravis Downs
        ICL065: move elimination broken in Ice LakeAndreas Abel
    ICL065: move elimination broken in Ice LakeAndreas Abel
      ICL065: move elimination broken in Ice Lakeanon
        ICL065: move elimination broken in Ice Lakedmcq
        ICL065: move elimination broken in Ice LakeTravis Downs
          ICL065: move elimination broken in Ice Lakeanon
            ICL065: move elimination broken in Ice LakeTravis Downs
  ICL065: move elimination broken in Ice LakeJan Olšan
    ICL065: move elimination broken in Ice LakeTravis Downs
      ICL065: move elimination broken in Ice Lakeanonymou5
        ICL065: move elimination broken in Ice LakeTravis Downs
  ICL065: move elimination broken in Ice LakeAndrey
    ICL065: move elimination broken in Ice LakeRonald Maas
      ICL065: move elimination broken in Ice LakeAndreas Abel
        ICL065: move elimination broken in Ice LakeAndrey
          ICL065: move elimination broken in Ice LakeAndreas Abel
    ICL065: move elimination broken in Ice LakeClinton Ingram
      ICL065: move elimination broken in Ice Laketarlinian
        ICL065: move elimination broken in Ice Lakeanonymou5
          ICL065: move elimination broken in Ice LakeClinton Ingram
            ICL065: move elimination broken in Ice Lakeanonymou5