[PATCH] D58957: [AMDGPU] Add an experimental buffer fat pointer address space.

[Neil Henning via Phabricator via llvm-commits]

sheredom created this revision.
sheredom added reviewers: tpr, nhaehnle, arsenm.
sheredom added a project: AMDGPU.
Herald added subscribers: llvm-commits, jfb, t-tye, dstuttard, yaxunl, wdng, jvesely, kzhuravl.
Herald added a project: LLVM.

Add an experimental buffer fat pointer address space that is currently unhandled in the backend. This commit reserves address space 7 as a non-integral pointer repsenting the 160-bit fat pointer (128-bit buffer descriptor + 32-bit offset) that is heavily used in graphics workloads using the AMDGPU backend.


Repository:
  rL LLVM

https://reviews.llvm.org/D58957

Files:
  docs/AMDGPUUsage.rst
  lib/Target/AMDGPU/AMDGPU.h
  lib/Target/AMDGPU/AMDGPUAliasAnalysis.cpp
  lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
  lib/Target/AMDGPU/AMDGPUTargetTransformInfo.cpp
  lib/Target/AMDGPU/SIISelLowering.cpp
  test/CodeGen/AMDGPU/amdgpu-alias-analysis.ll
  test/CodeGen/AMDGPU/r600.amdgpu-alias-analysis.ll

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