[all-commits] [llvm/llvm-project] ed2dea: [nfc][regalloc] Make the max inference cutoff conf...

[Mircea Trofin via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ed2deab5956fea9e8f64ef6020fe0b4e19734ecc
      https://github.com/llvm/llvm-project/commit/ed2deab5956fea9e8f64ef6020fe0b4e19734ecc
  Author: Mircea Trofin <mtrofin at google.com>
  Date:   2022-02-02 (Wed, 02 Feb 2022)

  Changed paths:
    M llvm/lib/CodeGen/MLRegallocEvictAdvisor.cpp
    M llvm/lib/CodeGen/RegAllocEvictionAdvisor.cpp

  Log Message:
  -----------
  [nfc][regalloc] Make the max inference cutoff configurable

Added a flag to make configurable the number of interferences after
which we 'bail out' and treat a set of intervals as un-evictable. Also
using it on the ML side, as it turns out to be a good control for
compile-time.

With this configurable, we can do a bit of trial and error and see if
bumping it has any effect on heuristic/policy quality.

Differential Revision: https://reviews.llvm.org/D118707