[all-commits] [llvm/llvm-project] 16945b: [AMDGPU] Don't send DEALLOC_VGPRs after calls (#77...

[Diana Picus via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 16945bc16dbb4c4acac854001b73e1454f3b601c
      https://github.com/llvm/llvm-project/commit/16945bc16dbb4c4acac854001b73e1454f3b601c
  Author: Diana Picus <Diana-Magda.Picus at amd.com>
  Date:   2024-01-11 (Thu, 11 Jan 2024)

  Changed paths:
    M llvm/lib/Target/AMDGPU/SIInsertWaitcnts.cpp
    M llvm/test/CodeGen/AMDGPU/call-argument-types.ll
    M llvm/test/CodeGen/AMDGPU/calling-conventions.ll
    M llvm/test/CodeGen/AMDGPU/global_atomics_scan_fadd.ll
    M llvm/test/CodeGen/AMDGPU/promote-constOffset-to-imm.ll
    M llvm/test/CodeGen/AMDGPU/release-vgprs.mir

  Log Message:
  -----------
  [AMDGPU] Don't send DEALLOC_VGPRs after calls (#77439)

Calls do not have to wait for VsCnt, so after they return there might
still be scratch stores in progress. It's important that we don't send
the DEALLOC_VGPR message in that case, since that might release the
VGPRs and scratch allocation before those stores are complete.