| # RUN: llc -mtriple=amdgcn -verify-machineinstrs -run-pass si-insert-waitcnts -o - %s | FileCheck %s | |
| # Check that the waitcnt pass does *not* insert a redundant waitcnt instr. | |
| # In this testcase, ensure that pass does not insert redundant S_WAITCNT 3952 | |
| ... | |
| # CHECK-LABEL: name: waitcnt-no-redundant | |
| # CHECK: S_WAITCNT 3952 | |
| # CHECK-NEXT: FLAT_ATOMIC_CMPSWAP | |
| # CHECK-NEXT: S_WAITCNT 3952 | |
| # CHECK-NEXT: BUFFER_WBINVL1 | |
| name: waitcnt-no-redundant | |
| body: | | |
| bb.0: | |
| renamable $vgpr0 = V_MOV_B32_e32 0, implicit $exec | |
| bb.1: | |
| S_WAITCNT 3952 | |
| FLAT_ATOMIC_CMPSWAP undef renamable $vgpr0_vgpr1, renamable $vgpr0_vgpr1, 0, 0, implicit $exec, implicit $flat_scr | |
| S_WAITCNT 3952 | |
| BUFFER_WBINVL1 implicit $exec | |
| S_BRANCH %bb.1 | |
| ... |