[all-commits] [llvm/llvm-project] 6eb9e2: RFC: [AMDGPU] Check subtarget features for consist...

[Jay Foad via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 6eb9e214b3cb06fc31f2547275e746761c3e41de
      https://github.com/llvm/llvm-project/commit/6eb9e214b3cb06fc31f2547275e746761c3e41de
  Author: Jay Foad <jay.foad at amd.com>
  Date:   2024-05-09 (Thu, 09 May 2024)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp
    M llvm/lib/Target/AMDGPU/AMDGPUInstructionSelector.cpp
    M llvm/lib/Target/AMDGPU/AMDGPUSubtarget.cpp
    M llvm/lib/Target/AMDGPU/GCNSubtarget.h
    A llvm/test/CodeGen/AMDGPU/check-subtarget-features.ll
    M llvm/test/CodeGen/AMDGPU/remove-incompatible-wave32-feature.ll
    M llvm/test/CodeGen/AMDGPU/unknown-processor.ll

  Log Message:
  -----------
  RFC: [AMDGPU] Check subtarget features for consistency (#86957)

Implement GCNSubtarget::checkSubtargetFeatures as a canonical place to
check subtarget features for consistency and diagnose any
inconsistencies. To start with, the implementation just checks that
either wavefrontsize32 or wavefrontsize64 is selected.

checkSubtargetFeatures is called at the start of instruction selection.
This is pretty arbitrary. It is just a convenient point at which we have
access to the subtarget that we're going to use for codegenning a
particular function.



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