[all-commits] [llvm/llvm-project] ef949e: [MachineSink] Use SkipPHIsAndLabels for sink inser...

[Carl Ritson via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ef949ecba57410e8b856f3246128312c79207933
      https://github.com/llvm/llvm-project/commit/ef949ecba57410e8b856f3246128312c79207933
  Author: Carl Ritson <carl.ritson at amd.com>
  Date:   2022-02-16 (Wed, 16 Feb 2022)

  Changed paths:
    M llvm/lib/CodeGen/MachineSink.cpp
    A llvm/test/CodeGen/AMDGPU/sink-after-control-flow.mir

  Log Message:
  -----------
  [MachineSink] Use SkipPHIsAndLabels for sink insertion points

For AMDGPU the insertion point for a block may not be the first
non-PHI instruction.  This happens when a block contains EXEC
mask manipulation related to control flow (converging lanes).

Use SkipPHIsAndLabels to determine the block insertion point
so that the target can skip any block prologue instructions.

Reviewed By: rampitec, ruiling

Differential Revision: https://reviews.llvm.org/D119399