[PATCH] D112483: AMDGPU: Optimize out implicit kernarg argument allocation if unused

[Matt Arsenault via Phabricator via llvm-commits]

arsenm created this revision.
arsenm added reviewers: rampitec, b-sumner.
Herald added subscribers: foad, kerbowa, hiraditya, t-tye, tpr, dstuttard, yaxunl, nhaehnle, jvesely, kzhuravl.
arsenm requested review of this revision.
Herald added a subscriber: wdng.
Herald added a project: LLVM.

We already annotate whether llvm.amdgcn.implicitarg.ptr is known to be
unused. Start using it to avoid allocating the implicit arguments if
unneeded.


https://reviews.llvm.org/D112483

Files:
  llvm/lib/Target/AMDGPU/AMDGPUHSAMetadataStreamer.cpp
  llvm/lib/Target/AMDGPU/AMDGPUSubtarget.cpp
  llvm/test/CodeGen/AMDGPU/GlobalISel/extractelement.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.kernarg.segment.ptr.ll
  llvm/test/CodeGen/AMDGPU/hsa-metadata-enqueue-kernel-v3.ll
  llvm/test/CodeGen/AMDGPU/hsa-metadata-enqueue-kernel.ll
  llvm/test/CodeGen/AMDGPU/hsa-metadata-from-llvm-ir-full-v3.ll
  llvm/test/CodeGen/AMDGPU/hsa-metadata-from-llvm-ir-full.ll
  llvm/test/CodeGen/AMDGPU/hsa-metadata-hidden-args-v3.ll
  llvm/test/CodeGen/AMDGPU/hsa-metadata-hidden-args.ll
  llvm/test/CodeGen/AMDGPU/hsa-metadata-hostcall-absent-v3.ll
  llvm/test/CodeGen/AMDGPU/hsa-metadata-hostcall-absent.ll
  llvm/test/CodeGen/AMDGPU/hsa-metadata-hostcall-present-v3.ll
  llvm/test/CodeGen/AMDGPU/hsa-metadata-hostcall-present.ll
  llvm/test/CodeGen/AMDGPU/llvm.amdgcn.kernarg.segment.ptr.ll

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D112483.382098.patch
Type: text/x-patch
Size: 15244 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20211025/2b2c85c2/attachment.bin>