[PATCH] D104509: [RegisterCoalescer] Resolve conflict based on liveness of subregister

[Ruiling, Song via Phabricator via llvm-commits]

ruiling updated this revision to Diff 357186.
ruiling added a comment.

Address review comments and add some TODO to the affected test splitkit-getsubrangeformask.ll.
I failed to find other way to reproduce the issue that splitkit-getsubrangeformask.ll used to hit.
I hope I can find ways to reproduce the issue when I get more knowledge of LiveRange split.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D104509/new/

https://reviews.llvm.org/D104509

Files:
  llvm/lib/CodeGen/RegisterCoalescer.cpp
  llvm/test/CodeGen/AMDGPU/regcoalescer-resolve-lane-conflict-by-subranges.mir
  llvm/test/CodeGen/AMDGPU/splitkit-getsubrangeformask.ll
  llvm/test/CodeGen/AMDGPU/wwm-reserved-spill.ll

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