[all-commits] [llvm/llvm-project] 8d77f8: [MLGO] Add per-instruction MBB frequencies to rega...

[Aiden Grossman via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 8d77f8fde7074639e1146f92e1c1e872316776ed
      https://github.com/llvm/llvm-project/commit/8d77f8fde7074639e1146f92e1c1e872316776ed
  Author: Aiden Grossman <agrossman154 at yahoo.com>
  Date:   2022-09-28 (Wed, 28 Sep 2022)

  Changed paths:
    M llvm/lib/CodeGen/MLRegallocEvictAdvisor.cpp
    M llvm/lib/CodeGen/MLRegallocEvictAdvisor.h
    M llvm/test/CodeGen/MLRegalloc/dev-mode-extra-features-logging.ll
    M llvm/unittests/CodeGen/MLRegallocDevelopmentFeatures.cpp

  Log Message:
  -----------
  [MLGO] Add per-instruction MBB frequencies to regalloc dev features

This commit adds in two new features to the ML regalloc eviction
analysis that can be used in ML models, a vector of MBB frequencies and
a vector of indicies mapping instructions to their corresponding basic
blocks. This will allow for further experimentation with per-instruction
features and give a lot more flexibility for future experimentation over
how we're extracting MBB frequency data currently.

Reviewed By: mtrofin, jacobhegna

Differential Revision: https://reviews.llvm.org/D134166