[all-commits] [llvm/llvm-project] d77ae7: [amdgpu] Reimplement LDS lowering

[Jon Chesterfield via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d77ae7f2513504655e555cd326208598093d66e2
      https://github.com/llvm/llvm-project/commit/d77ae7f2513504655e555cd326208598093d66e2
  Author: Jon Chesterfield <jonathanchesterfield at gmail.com>
  Date:   2022-12-07 (Wed, 07 Dec 2022)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPULowerModuleLDSPass.cpp
    M llvm/lib/Target/AMDGPU/AMDGPUMCInstLower.cpp
    M llvm/lib/Target/AMDGPU/AMDGPUMachineFunction.cpp
    M llvm/lib/Target/AMDGPU/AMDGPUMachineFunction.h
    M llvm/test/CodeGen/AMDGPU/GlobalISel/dropped_debug_info_assert.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/irtranslator-inline-asm.ll
    M llvm/test/CodeGen/AMDGPU/addrspacecast-known-non-null.ll
    M llvm/test/CodeGen/AMDGPU/ds_write2.ll
    M llvm/test/CodeGen/AMDGPU/hsa.ll
    M llvm/test/CodeGen/AMDGPU/local-memory.amdgcn.ll
    M llvm/test/CodeGen/AMDGPU/lower-kernel-and-module-lds.ll
    M llvm/test/CodeGen/AMDGPU/lower-kernel-lds-constexpr.ll
    M llvm/test/CodeGen/AMDGPU/lower-kernel-lds-super-align.ll
    M llvm/test/CodeGen/AMDGPU/lower-kernel-lds.ll
    M llvm/test/CodeGen/AMDGPU/lower-lds-struct-aa-memcpy.ll
    M llvm/test/CodeGen/AMDGPU/lower-lds-struct-aa-merge.ll
    M llvm/test/CodeGen/AMDGPU/lower-module-lds-constantexpr-phi.ll
    M llvm/test/CodeGen/AMDGPU/lower-module-lds-constantexpr.ll
    M llvm/test/CodeGen/AMDGPU/lower-module-lds-inactive.ll
    M llvm/test/CodeGen/AMDGPU/lower-module-lds-offsets.ll
    A llvm/test/CodeGen/AMDGPU/lower-module-lds-single-var-ambiguous.ll
    A llvm/test/CodeGen/AMDGPU/lower-module-lds-single-var-unambiguous.ll
    M llvm/test/CodeGen/AMDGPU/lower-module-lds-used-list.ll
    A llvm/test/CodeGen/AMDGPU/lower-module-lds-via-table.ll
    M llvm/test/CodeGen/AMDGPU/lower-module-lds.ll
    M llvm/test/CodeGen/AMDGPU/module-lds-false-sharing.ll
    M llvm/test/CodeGen/AMDGPU/noclobber-barrier.ll
    M llvm/test/CodeGen/AMDGPU/promote-alloca-stored-pointer-value.ll

  Log Message:
  -----------
  [amdgpu] Reimplement LDS lowering

Renames the current lowering scheme to "module" and introduces two new
ones, "kernel" and "table", plus a "hybrid" that chooses between those three
on a per-variable basis.

Unit tests are set up to pass with the default lowering of "module" or "hybrid"
with this patch defaulting to "module", which will be a less dramatic codegen
change relative to the current. This reflects the sparsity of test coverage for
the table lowering method. Hybrid is better than module in every respect and
will be default in a subsequent patch.

Reviewed By: arsenm

Differential Revision: https://reviews.llvm.org/D139433