[PATCH] D100117: [AMDGPU] SIFoldOperands: eagerly delete dead copies

[Jay Foad via Phabricator via llvm-commits]

foad created this revision.
foad added reviewers: arsenm, rampitec.
Herald added subscribers: kerbowa, hiraditya, t-tye, tpr, dstuttard, yaxunl, nhaehnle, jvesely, kzhuravl.
foad requested review of this revision.
Herald added subscribers: llvm-commits, wdng.
Herald added a project: LLVM.

This is cheap to implement, means less work for future passes like
MachineDCE, and slightly improves the folding in some cases.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D100117

Files:
  llvm/lib/Target/AMDGPU/SIFoldOperands.cpp
  llvm/test/CodeGen/AMDGPU/GlobalISel/cvt_f32_ubyte.ll
  llvm/test/CodeGen/AMDGPU/flat-scratch-fold-fi.mir
  llvm/test/CodeGen/AMDGPU/fold-cndmask-wave32.mir
  llvm/test/CodeGen/AMDGPU/fold-cndmask.mir
  llvm/test/CodeGen/AMDGPU/fold-imm-f16-f32.mir
  llvm/test/CodeGen/AMDGPU/fold-operands-order.mir
  llvm/test/CodeGen/AMDGPU/fold-readlane.mir
  llvm/test/CodeGen/AMDGPU/huge-number-operand-folds.mir
  llvm/test/CodeGen/AMDGPU/promote-constOffset-to-imm.ll
  llvm/test/CodeGen/AMDGPU/udiv64.ll
  llvm/test/CodeGen/AMDGPU/urem64.ll

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