1 # RUN: llc -o - %s -march=amdgcn -run-pass=si-insert-waitcnts -verify-machineinstrs | 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 ... 13 name: waitcnt-loop-single-basic-block 14 body: | 15 bb.0: 16 S_BRANCH %bb.1 17 bb.1: 18 GLOBAL_STORE_DWORD $vgpr7_vgpr8, $vgpr11, 0, 0, 0, implicit $exec 19 $vgpr21 = GLOBAL_LOAD_DWORD $vgpr4_vgpr5, 0, 0, 0, implicit $exec 20 $vgpr10 = GLOBAL_LOAD_DWORD $vgpr10_vgpr11, 0, 0, 0, implicit $exec 21 GLOBAL_STORE_DWORD $vgpr14_vgpr15, $vgpr21, 0, 0, 0, implicit $exec 22 $vgpr11 = GLOBAL_LOAD_DWORD $vgpr11_vgpr12, 0, 0, 0, implicit $exec 23 S_CBRANCH_SCC1 %bb.1, implicit $scc 24 bb.2: 25 S_ENDPGM 26 ... 27
