1# RUN: llc -march=amdgcn -mcpu=gfx900 -run-pass=si-insert-waitcnts -verify-machineinstrs %s -o - | FileCheck -check-prefix=GCN %s
2
3# Check that the waitcnt propogates info in the case of a single basic block loop
4
5# GCN-LABEL: waitcnt-loop-single-basic-block
6# GCN: bb.0
7# GCN: S_WAITCNT 3952
8# GCN-NEXT: GLOBAL_STORE_DWORD
9# GCN: S_WAITCNT 3953
10# GCN-NEXT: GLOBAL_STORE_DWORD
11
12...
13name: waitcnt-loop-single-basic-block
14body: |
15  bb.0:
16    S_BRANCH %bb.1
17  bb.1:
18    GLOBAL_STORE_DWORD $vgpr7_vgpr8, $vgpr11, 0, 0, 0, 0, implicit $exec
19    $vgpr21 = GLOBAL_LOAD_DWORD $vgpr4_vgpr5, 0, 0, 0, 0, implicit $exec
20    $vgpr10 = GLOBAL_LOAD_DWORD $vgpr10_vgpr11, 0, 0, 0, 0, implicit $exec
21    GLOBAL_STORE_DWORD $vgpr14_vgpr15, $vgpr21, 0, 0, 0, 0, implicit $exec
22    $vgpr11 = GLOBAL_LOAD_DWORD $vgpr11_vgpr12, 0, 0, 0, 0, implicit $exec
23    S_CBRANCH_SCC1 %bb.1, implicit $scc
24  bb.2:
25    S_ENDPGM 0
26...
27