[all-commits] [llvm/llvm-project] 5c0cb7: [X86] Folded MOVDDUPrm has the same sched behaviou...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 5c0cb75787b9a8a7fd488fb05b8350dc798aee9a
      https://github.com/llvm/llvm-project/commit/5c0cb75787b9a8a7fd488fb05b8350dc798aee9a
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2022-11-07 (Mon, 07 Nov 2022)

  Changed paths:
    M llvm/lib/Target/X86/X86SchedHaswell.td
    M llvm/lib/Target/X86/X86SchedIceLake.td
    M llvm/test/tools/llvm-mca/X86/Haswell/resources-avx1.s
    M llvm/test/tools/llvm-mca/X86/Haswell/resources-sse3.s
    M llvm/test/tools/llvm-mca/X86/IceLakeServer/resources-avx1.s
    M llvm/test/tools/llvm-mca/X86/IceLakeServer/resources-sse3.s

  Log Message:
  -----------
  [X86] Folded MOVDDUPrm has the same sched behaviour as MOVSHDUPrm/MOVSLDUPrm on Haswell/IceLake

There can be a difference for MOVDDUPrr but not the load folded broadcast that is purely on Port23

Fixes an old TODO (inherited from SkylakeServer which was fixed at c7662dc3e52801ec824d8473278fb976107d3e57)

Confirmed on Agner + uops.info