[PATCH] D136629: [AMDGPU] Fix delay alu for VOPD with src2acc

[Joe Nash via Phabricator via llvm-commits]

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V_FMAC_F32 and V_DOT2C_F32_F16 have a dummy src2 operand tied to vdst to
inform passes that the instructions read the dst operand. The VOPD
versions of these instructions lacked the dummy operand, which was a
problem for inserting s_delay_alu.
Introduce the dummy src2 operand on the VOPD versions, and fix the VOPD operand
tracking logic to account for it.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D136629

Files:
  llvm/lib/Target/AMDGPU/AsmParser/AMDGPUAsmParser.cpp
  llvm/lib/Target/AMDGPU/Utils/AMDGPUBaseInfo.cpp
  llvm/lib/Target/AMDGPU/Utils/AMDGPUBaseInfo.h
  llvm/lib/Target/AMDGPU/VOP2Instructions.td
  llvm/lib/Target/AMDGPU/VOPDInstructions.td
  llvm/test/CodeGen/AMDGPU/vopd-combine.mir
  llvm/test/CodeGen/AMDGPU/vopd-fmac-delay.mir
  llvm/test/CodeGen/AMDGPU/vopd-src2acc-delay.mir
  llvm/test/MC/AMDGPU/gfx11_asm_vopd_errs.s

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