[all-commits] [llvm/llvm-project] cd80cd: [AArch64] Fix schedmodel zero latency moves for Ne...

[Ricardo Jesus via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: cd80cd3d14c6140e5383eb2b6157f1e85c6620aa
      https://github.com/llvm/llvm-project/commit/cd80cd3d14c6140e5383eb2b6157f1e85c6620aa
  Author: Ricardo Jesus <rjj at ed.ac.uk>
  Date:   2023-09-07 (Thu, 07 Sep 2023)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64SchedNeoverseV2.td
    M llvm/lib/Target/AArch64/AArch64SchedPredNeoverse.td
    M llvm/test/tools/llvm-mca/AArch64/Neoverse/V2-basic-instructions.s
    A llvm/test/tools/llvm-mca/AArch64/Neoverse/V2-zero-lat-movs.s

  Log Message:
  -----------
  [AArch64] Fix schedmodel zero latency moves for Neoverse V2

Model some register-to-register move operations and move immediate
operations as "zero latency moves", as described in the Software
Optimisation Guide (SOG), §4.12:

https://developer.arm.com/documentation/PJDOC-466751330-593177/r0p2/

Differential Revision: https://reviews.llvm.org/D159443