test/CodeGen/AMDGPU/cluster-flat-loads-postra.mir

# RUN: llc -march=amdgcn -mcpu=tonga -run-pass post-RA-sched -verify-machineinstrs -o - %s | FileCheck -check-prefix=GCN %s

# GCN:      FLAT_LOAD_DWORD
# GCN-NEXT: FLAT_LOAD_DWORD
# GCN:      FLAT_STORE_DWORD
# GCN-NEXT: FLAT_STORE_DWORD

---
name:            cluster_loads_post_ra
tracksRegLiveness: true
registers:
liveins:
  - { reg: '%vgpr0' }
body:             |
  bb.0:
    liveins: %vgpr0

    %vgpr0_vgpr1 = IMPLICIT_DEF
    %vgpr4_vgpr5 = IMPLICIT_DEF
    %vgpr0 = FLAT_LOAD_DWORD %vgpr0_vgpr1, 0, 0, 0, implicit %exec, implicit %flat_scr :: (load 4)
    %vgpr4 = FLAT_LOAD_DWORD %vgpr4_vgpr5, 0, 0, 0, implicit %exec, implicit %flat_scr :: (load 4)
    %vgpr2 = IMPLICIT_DEF
    %vgpr3 = IMPLICIT_DEF
    %vgpr6 = IMPLICIT_DEF
    %vgpr0 = V_ADD_I32_e32 16, %vgpr2, implicit-def %vcc, implicit %exec
    %vgpr1 = V_ADDC_U32_e32 %vgpr3, killed %vgpr6, implicit-def dead %vcc, implicit %vcc, implicit %exec
    FLAT_STORE_DWORD %vgpr2_vgpr3, killed %vgpr0, 0, 0, 0, implicit %exec, implicit %flat_scr :: (store 4)
    FLAT_STORE_DWORD %vgpr0_vgpr1, killed %vgpr4, 0, 0, 0, implicit %exec, implicit %flat_scr :: (store 4)
    S_ENDPGM

...