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1# RUN: llc -o - %s -mtriple=amdgcn -mcpu=fiji -run-pass=si-insert-waitcnts -verify-machineinstrs | FileCheck -check-prefix=GCN %s2 3# GCN-LABEL: waitcnt-back-edge-loop4# GCN: bb.25# GCN: S_WAITCNT 39526# GCN: $vgpr5 = V_CVT_I32_F32_e32 killed $vgpr5, implicit $mode, implicit $exec7 8---9name: waitcnt-back-edge-loop10body: |11 bb.0:12 successors: %bb.113 14 $vgpr1 = V_MOV_B32_e32 0, implicit $exec, implicit-def $vgpr1_vgpr215 $vgpr2 = V_MOV_B32_e32 0, implicit $exec, implicit-def $vgpr1_vgpr216 $vgpr4 = FLAT_LOAD_DWORD $vgpr1_vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (volatile load (s32) from `ptr addrspace(1) null`, addrspace 1)17 $vgpr0 = FLAT_LOAD_DWORD $vgpr1_vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (volatile load (s32) from `ptr addrspace(1) null`, addrspace 1)18 $sgpr0_sgpr1 = V_CMP_EQ_U32_e64 3, killed $sgpr4, implicit $exec19 $vgpr3 = V_CNDMASK_B32_e64 0, -1082130432, 0, 1065353216, killed $sgpr0_sgpr1, implicit $exec20 $vgpr5 = V_MOV_B32_e32 $vgpr0, implicit $exec, implicit $exec21 S_BRANCH %bb.122 23 bb.3:24 successors: %bb.125 26 $vgpr5 = FLAT_LOAD_DWORD $vgpr1_vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (volatile load (s32) from `ptr addrspace(1) null`, addrspace 1)27 28 bb.1:29 successors: %bb.5, %bb.230 31 $vgpr5 = V_CVT_I32_F32_e32 killed $vgpr5, implicit $mode, implicit $exec32 V_CMP_NE_U32_e32 0, $vgpr5, implicit-def $vcc, implicit $exec33 $vcc = S_AND_B64 $exec, killed $vcc, implicit-def dead $scc34 S_CBRANCH_VCCZ %bb.5, implicit killed $vcc35 36 bb.2:37 successors: %bb.4, %bb.338 39 V_CMP_EQ_U32_e32 9, killed $vgpr5, implicit-def $vcc, implicit $exec40 $vcc = S_AND_B64 $exec, killed $vcc, implicit-def dead $scc41 S_CBRANCH_VCCZ %bb.3, implicit killed $vcc42 43 bb.4:44 successors: %bb.3, %bb.145 46 $vgpr5 = FLAT_LOAD_DWORD $vgpr1_vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (volatile load (s32) from `ptr addrspace(1) null`, addrspace 1)47 $vgpr4 = V_CVT_I32_F32_e32 $vgpr5, implicit $mode, implicit $exec48 V_CMP_EQ_U32_e32 2, killed $vgpr4, implicit-def $vcc, implicit $exec49 $vcc = S_AND_B64 $exec, killed $vcc, implicit-def dead $scc50 $vgpr4 = V_MOV_B32_e32 $vgpr5, implicit $exec, implicit $exec51 S_CBRANCH_VCCZ %bb.1, implicit killed $vcc52 S_BRANCH %bb.353 54 bb.5:55 56 $vgpr4 = V_MAC_F32_e32 killed $vgpr0, killed $vgpr3, killed $vgpr4, implicit $mode, implicit $exec57 EXP_DONE 12, killed $vgpr4, undef $vgpr0, undef $vgpr0, undef $vgpr0, 0, 0, 15, implicit $exec58 S_ENDPGM 059...60---61 62# GCN-LABEL: name: waitcnt-multiple-back-edges{{$}}63# GCN: bb.0:64# GCN: S_WAITCNT 065# GCN-NEXT: S_BRANCH %bb.266 67name: waitcnt-multiple-back-edges68body: |69 bb.0:70 S_BRANCH %bb.271 72 bb.1:73 S_BRANCH %bb.274 75 bb.2:76 S_CBRANCH_VCCZ %bb.1, implicit $vcc77 78 bb.3:79 S_CBRANCH_VCCNZ %bb.5, implicit $vcc80 81 bb.4:82 BUFFER_ATOMIC_ADD_OFFSET renamable $vgpr0, renamable $sgpr12_sgpr13_sgpr14_sgpr15, 0, 4, 0, implicit $exec83 S_CBRANCH_SCC0 %bb.2, implicit $scc84 S_BRANCH %bb.685 86 bb.5:87 S_CBRANCH_SCC0 %bb.2, implicit $scc88 S_BRANCH %bb.689 90 bb.6:91 S_CBRANCH_SCC1 %bb.0, implicit $scc92 S_ENDPGM 093...94