[PATCH] D156534: GlobalISel: Add shifts to constant_fold combine

[Matt Arsenault via Phabricator via llvm-commits]

arsenm created this revision.
arsenm added reviewers: aemerson, Pierre-vh, mbrkusanin, Petar.Avramovic, paquette.
Herald added subscribers: kerbowa, jvesely.
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arsenm requested review of this revision.
Herald added a subscriber: wdng.
Herald added a project: LLVM.

Currently we're getting away with post-selection constant folding on
these (a hack which exists for the DAG).


https://reviews.llvm.org/D156534

Files:
  llvm/include/llvm/Target/GlobalISel/Combine.td
  llvm/test/CodeGen/AMDGPU/GlobalISel/postlegalizercombiner-ashr.mir
  llvm/test/CodeGen/AMDGPU/GlobalISel/postlegalizercombiner-lshr.mir
  llvm/test/CodeGen/AMDGPU/GlobalISel/postlegalizercombiner-shl.mir
  llvm/test/CodeGen/AMDGPU/GlobalISel/sdiv.i32.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/sdiv.i64.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/srem.i32.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/srem.i64.ll

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