waitcnt-vscnt.mir

# RUN: llc -march=amdgcn -mcpu=gfx1010 -verify-machineinstrs -run-pass si-insert-waitcnts -o - %s | FileCheck -check-prefix=GFX10 %s

# GFX10-LABEL: waitcnt-vscnt
# GFX10: GLOBAL_ATOMIC_ADD_RTN
# GFX10-NEXT: S_WAITCNT 49279
---
name: waitcnt-vscnt
machineFunctionInfo:
  isEntryFunction: true
body: |
  bb.0:
    liveins: $sgpr0_sgpr1
    $sgpr4 = S_LOAD_DWORD_IMM $sgpr0_sgpr1, 4, 0 :: (dereferenceable invariant load 4 from `i32 addrspace(4)* undef`)
    S_WAITCNT_VSCNT undef $sgpr_null, 0
    $vgpr0 = GLOBAL_ATOMIC_ADD_RTN $vgpr0_vgpr1, $vgpr2, 0, 1, implicit $exec :: (load store syncscope("agent") seq_cst 4, addrspace 1)
    S_CMP_LG_U32 killed $sgpr4, 0, implicit-def $scc
...