[PATCH] D89644: [AMDGPU] Remove fix up operand from SI_ELSE

[Carl Ritson via Phabricator via llvm-commits]

critson created this revision.
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Remove immediate operand from SI_ELSE which indicates if EXEC has
been modified.  Instead always emit code that handles EXEC and
remove unnecessary instructions during pre-RA optimisation.

This facilitates passes (i.e. SIWholeQuadMode) adding exec mask
manipulation post control flow lowering, and pre control flow
lower passes do not need to be aware of SI_ELSE handling.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D89644

Files:
  llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
  llvm/lib/Target/AMDGPU/SIInstructions.td
  llvm/lib/Target/AMDGPU/SILowerControlFlow.cpp
  llvm/lib/Target/AMDGPU/SIOptimizeExecMaskingPreRA.cpp
  llvm/lib/Target/AMDGPU/SIWholeQuadMode.cpp
  llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-brcond.mir
  llvm/test/CodeGen/AMDGPU/collapse-endcf.mir
  llvm/test/CodeGen/AMDGPU/control-flow-fastregalloc.ll
  llvm/test/CodeGen/AMDGPU/lower-control-flow-other-terminators.mir

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