[all-commits] [llvm/llvm-project] 4d815b: [GISel] Add redundant bitcast folding combine

[Pierre van Houtryve via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4d815bfae0ea556629756aea7ad8d1520131f9ff
      https://github.com/llvm/llvm-project/commit/4d815bfae0ea556629756aea7ad8d1520131f9ff
  Author: Pierre van Houtryve <pierre.vanhoutryve at amd.com>
  Date:   2022-10-11 (Tue, 11 Oct 2022)

  Changed paths:
    M llvm/include/llvm/Target/GlobalISel/Combine.td
    A llvm/test/CodeGen/AMDGPU/GlobalISel/prelegalizer-combiner-redundant-bitcast.mir

  Log Message:
  -----------
  [GISel] Add redundant bitcast folding combine

Simply folds away bitcasts that cancel each other.

Reviewed By: arsenm

Differential Revision: https://reviews.llvm.org/D135146