[PATCH] D82641: [AMDGPU] Unify early PS termination blocks

[Carl Ritson via Phabricator via llvm-commits]

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

This is a stepping stop to adding early termination in more places because it means termination can be added anywhere in a basic block (without splitting basic blocks).

Will need to be revised with D77544 <https://reviews.llvm.org/D77544> is committed.


Generate a single early exit block out-of-line and branch to this
if all lanes are killed. This avoids branching if lanes are active.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D82641

Files:
  llvm/lib/Target/AMDGPU/SIInsertSkips.cpp
  llvm/test/CodeGen/AMDGPU/insert-skips-kill-uncond.mir
  llvm/test/CodeGen/AMDGPU/skip-if-dead.ll

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