[PATCH] D46884: [AArch64] Cortex-A55 scheduler model

[Sjoerd Meijer via Phabricator via llvm-commits]

SjoerdMeijer created this revision.
SjoerdMeijer added reviewers: flyingforyou, sebpop, evandro, t.p.northover, kristof.beyls, javed.absar, samparker.
Herald added a subscriber: rengolin.

This adds the Cortex-A55 scheduler model.

The optimisation guide describing Cortex-A55 micro-architecture in more detail
can be downloaded here:

https://static.docs.arm.com/epm128372/20/arm_cortex_a55_software_optimization_guide_v2.pdf

This model showed decent performance uplifts for a number of benchmarks on our
models, but we are interested in feedback if the same trend is observed on hardware;
Samsung was interested in providing feedback on this.


https://reviews.llvm.org/D46884

Files:
  lib/Target/AArch64/AArch64.td
  lib/Target/AArch64/AArch64SchedA55.td
  test/CodeGen/AArch64/arm64-misched-basic-cortex-a55.ll

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