[PATCH] D88777: [AMDGPU] Add SI_EARLY_TERMINATE_SCC0 for early terminating shader

[Carl Ritson via Phabricator via llvm-commits]

critson created this revision.
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Add pseudo instruction to allow early termination of pixel shader
anywhere based on the value of SCC.  The intention is to use this
when a mask of live lanes is updated, e.g. live lanes in WQM pass.
This facilitates early termination of shaders even when EXEC is
incomplete, e.g. in non-uniform control flow.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D88777

Files:
  llvm/lib/Target/AMDGPU/SIInsertSkips.cpp
  llvm/lib/Target/AMDGPU/SIInstructions.td
  llvm/test/CodeGen/AMDGPU/early-term.mir

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