1 # RUN: llc -mtriple=amdgcn -verify-machineinstrs -run-pass si-insert-waitcnts -o - %s | FileCheck %s 2 3 # Check that the waitcnt pass does *not* insert a redundant waitcnt instr. 4 # In this testcase, ensure that pass does not insert redundant S_WAITCNT 3952 5 6 ... 7 # CHECK-LABEL: name: waitcnt-no-redundant 8 # CHECK: S_WAITCNT 3952 9 # CHECK-NEXT: FLAT_ATOMIC_CMPSWAP 10 # CHECK-NEXT: S_WAITCNT 3952 11 # CHECK-NEXT: BUFFER_WBINVL1 12 13 name: waitcnt-no-redundant 14 body: | 15 bb.0: 16 renamable $vgpr0 = V_MOV_B32_e32 0, implicit $exec 17 18 bb.1: 19 S_WAITCNT 3952 20 FLAT_ATOMIC_CMPSWAP undef renamable $vgpr0_vgpr1, renamable $vgpr0_vgpr1, 0, 0, implicit $exec, implicit $flat_scr 21 S_WAITCNT 3952 22 BUFFER_WBINVL1 implicit $exec 23 S_BRANCH %bb.1 24 25 ... 26
