[PATCH] D82737: [AMDGPU] Insert PS early exit at end of control flow

[Carl Ritson via Phabricator via llvm-commits]

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

Depends on D82641 <https://reviews.llvm.org/D82641>.
Exit early if the exec mask is zero at the end of control flow.
Mark the ends of control flow during control flow lowering and
convert these to exits during the insert skips pass.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D82737

Files:
  llvm/lib/Target/AMDGPU/SIInsertSkips.cpp
  llvm/lib/Target/AMDGPU/SIInstructions.td
  llvm/lib/Target/AMDGPU/SILowerControlFlow.cpp
  llvm/test/CodeGen/AMDGPU/kill-infinite-loop.ll
  llvm/test/CodeGen/AMDGPU/skip-if-dead.ll

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