[PATCH] D59626: [AMDGPU] Add MachineDCE pass after RenameIndependentSubregs

[Stanislav Mekhanoshin via Phabricator via llvm-commits]

rampitec updated this revision to Diff 193766.
rampitec retitled this revision from "Add MachineDCE pass after RenameIndependentSubregs" to "[AMDGPU] Add MachineDCE pass after RenameIndependentSubregs".
rampitec added a comment.
Herald added subscribers: t-tye, tpr, dstuttard, yaxunl, kzhuravl.

Moving pass insertion from common TargetPassConfig into AMDGPU, since most targets do not need it.
Changes to maintain liveness if available remain in the MachineDCE pass, but are a no-op for any other target until they decide to use it late in the RA.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D59626/new/

https://reviews.llvm.org/D59626

Files:
  lib/CodeGen/DeadMachineInstructionElim.cpp
  lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
  test/CodeGen/AMDGPU/dead-lane.mir
  test/CodeGen/AMDGPU/salu-to-valu.ll
  test/CodeGen/AMDGPU/sdwa-peephole.ll
  test/CodeGen/AMDGPU/shrink-carry.mir
  test/CodeGen/AMDGPU/spill-empty-live-interval.mir
  test/CodeGen/AMDGPU/subreg-coalescer-undef-use.ll

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