[PATCH] D127963: [AMDGPU] Add support for GFX11 LDSDIR hazards

[Jay Foad via Phabricator via llvm-commits]

foad created this revision.
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Detect LDS direct WAR/WAW hazards and compute values for
wait_vdst (va_vdst) parameter.  Where appropriate this
raises wait_vdst from the default 0 to allow concurrent
issue of LDS direct with VALU execution.

Also detect LDS direct versus VMEM source VGPR hazards
and insert vm_vsrc=0 waits using s_waitcnt_depctr.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D127963

Files:
  llvm/lib/Target/AMDGPU/GCNHazardRecognizer.cpp
  llvm/lib/Target/AMDGPU/GCNHazardRecognizer.h
  llvm/test/CodeGen/AMDGPU/lds-direct-hazards.mir

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