[PATCH] D86253: [AMDGPU] Avoid sorting stalls in regbank-reassign

Stanislav Mekhanoshin via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Thu Aug 20 16:30:25 PDT 2020


rampitec updated this revision to Diff 286917.
rampitec retitled this revision from "[AMDGPU] Disable stall weight calculation in regbank-reassign" to "[AMDGPU] Avoid sorting stalls in regbank-reassign".
rampitec edited the summary of this revision.
rampitec added a comment.

In fact the slowest part was sorting. I just have changed data structure to avoid sorting. Weight calculation itself turns to be not that much expensive.

This almost halves time the pass takes.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D86253/new/

https://reviews.llvm.org/D86253

Files:
  llvm/lib/Target/AMDGPU/GCNRegBankReassign.cpp
  llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.image.sample.g16.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/uaddsat.ll
  llvm/test/CodeGen/AMDGPU/atomic_optimizations_local_pointer.ll
  llvm/test/CodeGen/AMDGPU/llvm.amdgcn.image.sample.a16.dim.ll
  llvm/test/CodeGen/AMDGPU/llvm.amdgcn.image.sample.g16.encode.ll
  llvm/test/CodeGen/AMDGPU/llvm.amdgcn.image.sample.g16.ll
  llvm/test/CodeGen/AMDGPU/regbank-reassign.mir

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