[all-commits] [llvm/llvm-project] 6f0ae8: [GISel][CombinerHelper] Add a combine turning shuf...

[qcolombet via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 6f0ae81512c17ae8fb1033dc4e0b3d4c2424742c
      https://github.com/llvm/llvm-project/commit/6f0ae81512c17ae8fb1033dc4e0b3d4c2424742c
  Author: Quentin Colombet <quentin.colombet at gmail.com>
  Date:   2019-10-21 (Mon, 21 Oct 2019)

  Changed paths:
    M llvm/include/llvm/CodeGen/GlobalISel/CombinerHelper.h
    M llvm/lib/CodeGen/GlobalISel/CombinerHelper.cpp
    M llvm/lib/Target/AArch64/AArch64PreLegalizerCombiner.cpp
    A llvm/test/CodeGen/AArch64/GlobalISel/prelegalizercombiner-shuffle-vector.mir

  Log Message:
  -----------
  [GISel][CombinerHelper] Add a combine turning shuffle_vector into concat_vectors

Teach the CombinerHelper how to turn shuffle_vectors, that
concatenate vectors, into concat_vectors and add this combine
to the AArch64 pre-legalizer combiner.

Differential Revision: https://reviews.llvm.org/D69149

llvm-svn: 375452