[all-commits] [llvm/llvm-project] f71f5f: [AMDGPU] Implement hardware bug workaround for ima...

[Rodrigo Dominguez via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: f71f5f39f670075f7b653b1e1a6bd24e5c8f099e
      https://github.com/llvm/llvm-project/commit/f71f5f39f670075f7b653b1e1a6bd24e5c8f099e
  Author: Rodrigo Dominguez <rodrigo.dominguez at amd.com>
  Date:   2020-10-07 (Wed, 07 Oct 2020)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPU.td
    M llvm/lib/Target/AMDGPU/AMDGPUInstructionSelector.cpp
    M llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
    M llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.h
    M llvm/lib/Target/AMDGPU/AMDGPUSubtarget.cpp
    M llvm/lib/Target/AMDGPU/AMDGPUSubtarget.h
    M llvm/lib/Target/AMDGPU/SIISelLowering.cpp
    M llvm/lib/Target/AMDGPU/SIISelLowering.h
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-llvm.amdgcn.image.store.2d.d16.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.image.store.2d.d16.ll
    M llvm/test/CodeGen/AMDGPU/llvm.amdgcn.image.d16.dim.ll
    M llvm/test/CodeGen/AMDGPU/llvm.amdgcn.image.gather4.d16.dim.ll

  Log Message:
  -----------
  [AMDGPU] Implement hardware bug workaround for image instructions

Summary:
This implements a workaround for a hardware bug in gfx8 and gfx9,
where register usage is not estimated correctly for image_store and
image_gather4 instructions when D16 is used.

Change-Id: I4e30744da6796acac53a9b5ad37ac1c2035c8899

Subscribers: arsenm, kzhuravl, jvesely, wdng, nhaehnle, yaxunl, dstuttard, tpr, t-tye, hiraditya, kerbowa, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D81172