[all-commits] [llvm/llvm-project] 55e3a7: [GlobalISel][AMDGPU] add legalization for G_FREEZE

[Dominik Montada via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 55e3a7c6b21fb21d88896a9548b95384d2bd97dd
      https://github.com/llvm/llvm-project/commit/55e3a7c6b21fb21d88896a9548b95384d2bd97dd
  Author: Dominik Montada <dominik.montada at hightec-rt.com>
  Date:   2020-04-17 (Fri, 17 Apr 2020)

  Changed paths:
    M llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h
    M llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
    M llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
    A llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-freeze.mir
    M llvm/unittests/CodeGen/GlobalISel/LegalizerHelperTest.cpp

  Log Message:
  -----------
  [GlobalISel][AMDGPU] add legalization for G_FREEZE

Summary:
Copy the legalization rules from SelectionDAG:
-widenScalar using anyext
-narrowScalar using intermediate merges
-scalarize/fewerElements using unmerge
-moreElements using G_IMPLICIT_DEF and insert

Add G_FREEZE legalization actions to AMDGPULegalizerInfo.
Use the same legalization actions as G_IMPLICIT_DEF.

Depends on D77795.

Reviewers: dsanders, arsenm, aqjune, aditya_nandakumar, t.p.northover, lebedev.ri, paquette, aemerson

Reviewed By: arsenm

Subscribers: kzhuravl, yaxunl, dstuttard, tpr, t-tye, jvesely, nhaehnle, kerbowa, wdng, rovka, hiraditya, volkan, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D78092