[all-commits] [llvm/llvm-project] ed7458: [AMDGPU] Don't check for VMEM hazards on GFX10

[Jay Foad via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ed7458398a45ab7a976a2e5d52f6f2c58c5ba110
      https://github.com/llvm/llvm-project/commit/ed7458398a45ab7a976a2e5d52f6f2c58c5ba110
  Author: Jay Foad <jay.foad at amd.com>
  Date:   2021-03-04 (Thu, 04 Mar 2021)

  Changed paths:
    M llvm/lib/Target/AMDGPU/GCNHazardRecognizer.cpp
    M llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.intersect_ray.ll
    M llvm/test/CodeGen/AMDGPU/atomic_optimizations_local_pointer.ll
    M llvm/test/CodeGen/AMDGPU/global-saddr-atomics.ll
    M llvm/test/CodeGen/AMDGPU/global-saddr-load.ll
    M llvm/test/CodeGen/AMDGPU/global-saddr-store.ll
    M llvm/test/CodeGen/AMDGPU/hazard-hidden-bundle.mir
    M llvm/test/CodeGen/AMDGPU/hazard-in-bundle.mir
    M llvm/test/CodeGen/AMDGPU/mubuf-legalize-operands.ll
    M llvm/test/CodeGen/AMDGPU/stack-pointer-offset-relative-frameindex.ll
    M llvm/test/CodeGen/AMDGPU/vgpr-descriptor-waterfall-loop-idom-update.ll

  Log Message:
  -----------
  [AMDGPU] Don't check for VMEM hazards on GFX10

The hazard where a VMEM reads an SGPR written by a VALU counts as a data
dependency hazard, so no nops are required on GFX10. Tested with Vulkan
CTS on GFX10.1 and GFX10.3.

Differential Revision: https://reviews.llvm.org/D97926