[PATCH] D151894: [AArch64] Neoverse V2 scheduling model

[Ricardo Jesus via Phabricator via llvm-commits]

rjj created this revision.
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This adds a scheduling model for the Neoverse V2. All information is taken from
the Neoverse V2 Software Optimisation Guide:

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

The model was tested on hardware and performance results are overall neutral
for SPEC2017 INT and FP compared to the Neoverse N2 scheduling model currently
used as default.

Having this model enables a more accurate description of the CPU with llvm-mca.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D151894

Files:
  llvm/lib/Target/AArch64/AArch64.td
  llvm/lib/Target/AArch64/AArch64InstrFormats.td
  llvm/lib/Target/AArch64/AArch64InstrInfo.cpp
  llvm/lib/Target/AArch64/AArch64InstrInfo.h
  llvm/lib/Target/AArch64/AArch64SchedNeoverseV2.td
  llvm/lib/Target/AArch64/AArch64SchedPredNeoverse.td
  llvm/lib/Target/AArch64/AArch64SchedPredicates.td
  llvm/lib/Target/AArch64/MCTargetDesc/AArch64MCTargetDesc.cpp
  llvm/lib/Target/AArch64/MCTargetDesc/AArch64MCTargetDesc.h
  llvm/test/tools/llvm-mca/AArch64/Neoverse/V2-basic-instructions.s
  llvm/test/tools/llvm-mca/AArch64/Neoverse/V2-neon-instructions.s
  llvm/test/tools/llvm-mca/AArch64/Neoverse/V2-sve-instructions.s