| Mark Searles | c3c02bd | 2018-03-14 22:04:32 +0000 | [diff] [blame^] | 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 | ... |