[all-commits] [llvm/llvm-project] 4b8b16: [AMDGPU] Add getRegisterByName support for src_fla...

[Andreas Leitner via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4b8b168e8b6897fe3816949a316002ee8aff2e98
      https://github.com/llvm/llvm-project/commit/4b8b168e8b6897fe3816949a316002ee8aff2e98
  Author: Andreas Leitner <leitner.andi at googlemail.com>
  Date:   2026-09-09 (Wed, 09 Sep 2026)

  Changed paths:
    M llvm/lib/Target/AMDGPU/SIISelLowering.cpp
    A llvm/test/CodeGen/AMDGPU/read-register-src-flat-scratch-base.ll
    A llvm/test/CodeGen/AMDGPU/read-write-register-src-flat-scratch-base-invalid-subtarget.ll
    A llvm/test/CodeGen/AMDGPU/type-mismatch-src-flat-scratch-base.ll
    A llvm/test/CodeGen/AMDGPU/write-register-src-flat-scratch-base.ll

  Log Message:
  -----------
  [AMDGPU] Add getRegisterByName support for src_flat_scratch_base (#220560)

Expose `src_flat_scratch_base`, `src_flat_scratch_base_lo`, and
`src_flat_scratch_base_hi` through `llvm.read_register` /
`llvm.write_register`.

The implementation is basically the same as the existing named-register
support for `flat_scratch`

It errors out on targets without `FeatureGloballyAddressableScratch`
(pre-gfx1250).



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