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| # RUN: llc -o - %s -march=amdgcn -mcpu=fiji -run-pass=si-insert-waitcnts -verify-machineinstrs | FileCheck -check-prefix=GCN %s
# GCN-LABEL: waitcnt-back-edge-loop
# GCN: bb.2
# GCN: S_WAITCNT 112
# GCN: $vgpr5 = V_CVT_I32_F32_e32 killed $vgpr5, implicit $exec
---
name: waitcnt-back-edge-loop
body: |
bb.0:
successors: %bb.1
$vgpr1 = V_MOV_B32_e32 0, implicit $exec, implicit-def $vgpr1_vgpr2
$vgpr2 = V_MOV_B32_e32 0, implicit $exec, implicit-def $vgpr1_vgpr2
$vgpr4 = FLAT_LOAD_DWORD $vgpr1_vgpr2, 0, 0, 0, 0, implicit $exec, implicit $flat_scr :: (volatile load 4 from `float addrspace(1)* null`, addrspace 1)
$vgpr0 = FLAT_LOAD_DWORD $vgpr1_vgpr2, 0, 0, 0, 0, implicit $exec, implicit $flat_scr :: (volatile load 4 from `float addrspace(1)* null`, addrspace 1)
$sgpr0_sgpr1 = V_CMP_EQ_U32_e64 3, killed $sgpr4, implicit $exec
$vgpr3 = V_CNDMASK_B32_e64 0, -1082130432, 0, 1065353216, killed $sgpr0_sgpr1, implicit $exec
$vgpr5 = V_MOV_B32_e32 $vgpr0, implicit $exec, implicit $exec
S_BRANCH %bb.1
bb.3:
successors: %bb.1
$vgpr5 = FLAT_LOAD_DWORD $vgpr1_vgpr2, 0, 0, 0, 0, implicit $exec, implicit $flat_scr :: (volatile load 4 from `float addrspace(1)* null`, addrspace 1)
bb.1:
successors: %bb.5, %bb.2
$vgpr5 = V_CVT_I32_F32_e32 killed $vgpr5, implicit $exec
V_CMP_NE_U32_e32 0, $vgpr5, implicit-def $vcc, implicit $exec
$vcc = S_AND_B64 $exec, killed $vcc, implicit-def dead $scc
S_CBRANCH_VCCZ %bb.5, implicit killed $vcc
bb.2:
successors: %bb.4, %bb.3
V_CMP_EQ_U32_e32 9, killed $vgpr5, implicit-def $vcc, implicit $exec
$vcc = S_AND_B64 $exec, killed $vcc, implicit-def dead $scc
S_CBRANCH_VCCZ %bb.3, implicit killed $vcc
bb.4:
successors: %bb.3, %bb.1
$vgpr5 = FLAT_LOAD_DWORD $vgpr1_vgpr2, 0, 0, 0, 0, implicit $exec, implicit $flat_scr :: (volatile load 4 from `float addrspace(1)* null`, addrspace 1)
$vgpr4 = V_CVT_I32_F32_e32 $vgpr5, implicit $exec
V_CMP_EQ_U32_e32 2, killed $vgpr4, implicit-def $vcc, implicit $exec
$vcc = S_AND_B64 $exec, killed $vcc, implicit-def dead $scc
$vgpr4 = V_MOV_B32_e32 $vgpr5, implicit $exec, implicit $exec
S_CBRANCH_VCCZ %bb.1, implicit killed $vcc
S_BRANCH %bb.3
bb.5:
$vgpr4 = V_MAC_F32_e32 killed $vgpr0, killed $vgpr3, killed $vgpr4, implicit $exec
EXP_DONE 12, killed $vgpr4, undef $vgpr0, undef $vgpr0, undef $vgpr0, 0, 0, 15, implicit $exec
S_ENDPGM 0
...
---
# GCN-LABEL: name: waitcnt-multiple-back-edges{{$}}
# GCN: bb.0:
# GCN: S_WAITCNT 0
# GCN-NEXT: S_BRANCH %bb.2
name: waitcnt-multiple-back-edges
body: |
bb.0:
S_BRANCH %bb.2
bb.1:
S_BRANCH %bb.2
bb.2:
S_CBRANCH_VCCZ %bb.1, implicit $vcc
bb.3:
S_CBRANCH_VCCNZ %bb.5, implicit $vcc
bb.4:
BUFFER_ATOMIC_ADD_OFFSET renamable $vgpr0, renamable $sgpr12_sgpr13_sgpr14_sgpr15, 0, 4, 0, implicit $exec
S_CBRANCH_SCC0 %bb.2, implicit $scc
S_BRANCH %bb.6
bb.5:
S_CBRANCH_SCC0 %bb.2, implicit $scc
S_BRANCH %bb.6
bb.6:
S_CBRANCH_SCC1 %bb.0, implicit $scc
S_ENDPGM 0
...
|