[all-commits] [llvm/llvm-project] cdb973: [amdgpu] Expand all ConstantExpr users of LDS vari...

[Jon Chesterfield via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: cdb9738963a1584d6530bcf7b102423f54a6bdb1
      https://github.com/llvm/llvm-project/commit/cdb9738963a1584d6530bcf7b102423f54a6bdb1
  Author: Jon Chesterfield <jonathanchesterfield at gmail.com>
  Date:   2022-09-14 (Wed, 14 Sep 2022)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPULowerModuleLDSPass.cpp
    M llvm/lib/Target/AMDGPU/Utils/AMDGPUMemoryUtils.cpp
    M llvm/lib/Target/AMDGPU/Utils/AMDGPUMemoryUtils.h
    M llvm/test/CodeGen/AMDGPU/lower-kernel-lds-constexpr.ll
    M llvm/test/CodeGen/AMDGPU/lower-lds-struct-aa-memcpy.ll
    A llvm/test/CodeGen/AMDGPU/lower-module-lds-constantexpr-phi.ll
    M llvm/test/CodeGen/AMDGPU/lower-module-lds-constantexpr.ll

  Log Message:
  -----------
  [amdgpu] Expand all ConstantExpr users of LDS variables in instructions

Bug noted in D112717 can be sidestepped with this change.

Expanding all ConstantExpr involved with LDS up front makes the variable specialisation simpler. Excludes ConstantExpr that don't access LDS to avoid disturbing codegen elsewhere.

Reviewed By: rampitec

Differential Revision: https://reviews.llvm.org/D133422