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| # RUN: llc -march=amdgcn -mcpu=gfx803 -verify-machineinstrs -run-pass si-insert-waitcnts -o - %s | FileCheck -check-prefixes=GCN,GFX8 %s
# RUN: llc -march=amdgcn -mcpu=gfx900 -verify-machineinstrs -run-pass si-insert-waitcnts -o - %s | FileCheck -check-prefixes=GCN,GFX9 %s
--- |
define amdgpu_ps void @irreducible_loop() {
ret void
}
define amdgpu_ps void @irreducible_loop_extended() {
ret void
}
...
---
# GCN-LABEL: name: irreducible_loop{{$}}
# GCN: S_LOAD_DWORDX4_IMM
# GFX8: S_WAITCNT 127{{$}}
# GFX9: S_WAITCNT 49279{{$}}
# GCN: S_BUFFER_LOAD_DWORD_IMM
# GFX8: S_WAITCNT 127{{$}}
# GFX9: S_WAITCNT 49279{{$}}
# GCN: S_CMP_GE_I32
name: irreducible_loop
body: |
bb.0:
successors: %bb.3, %bb.2
S_CBRANCH_VCCZ %bb.2, implicit $vcc
S_BRANCH %bb.3
bb.1:
successors: %bb.3, %bb.2
S_CBRANCH_VCCNZ %bb.3, implicit $vcc
bb.2:
successors: %bb.3
renamable $sgpr4_sgpr5_sgpr6_sgpr7 = S_LOAD_DWORDX4_IMM renamable $sgpr0_sgpr1, 0, 0, 0
renamable $sgpr3 = S_BUFFER_LOAD_DWORD_IMM killed renamable $sgpr4_sgpr5_sgpr6_sgpr7, 0, 0, 0
bb.3:
successors: %bb.1, %bb.4
S_CMP_GE_I32 renamable $sgpr2, renamable $sgpr3, implicit-def $scc
S_CBRANCH_SCC0 %bb.1, implicit killed $scc
bb.4:
S_ENDPGM 0
...
# GCN-LABEL: name: irreducible_loop_extended
# GCN: S_LOAD_DWORDX4_IMM
# GFX8: S_WAITCNT 127{{$}}
# GFX9: S_WAITCNT 49279{{$}}
# GCN: BUFFER_STORE_DWORD_OFFEN_exact
# GFX8: S_WAITCNT 127{{$}}
# GFX9: S_WAITCNT 49279{{$}}
# GCN: BUFFER_STORE_DWORD_OFFEN_exact
# GCN: S_LOAD_DWORDX4_IMM
# GFX8: S_WAITCNT 127{{$}}
# GFX9: S_WAITCNT 49279{{$}}
# GCN: BUFFER_ATOMIC_ADD_OFFSET_RTN
# GCN: S_WAITCNT 3952
# GCN: FLAT_STORE_DWORD
# GCN: S_ENDPGM 0
name: irreducible_loop_extended
body: |
bb.0:
successors: %bb.1, %bb.2
$sgpr4_sgpr5_sgpr6_sgpr7 = S_LOAD_DWORDX4_IMM renamable $sgpr2_sgpr3, 0, 0, 0
S_CBRANCH_VCCZ %bb.2, implicit $vcc
bb.1:
successors: %bb.2
BUFFER_STORE_DWORD_OFFEN_exact killed renamable $vgpr3, renamable $vgpr2, renamable $sgpr4_sgpr5_sgpr6_sgpr7, 0, 0, 0, 0, 0, 0, 0, implicit $exec
bb.2:
successors: %bb.3, %bb.6
S_CBRANCH_VCCNZ %bb.6, implicit $vcc
bb.3:
successors: %bb.4, %bb.5
BUFFER_STORE_DWORD_OFFEN_exact killed renamable $vgpr3, killed renamable $vgpr2, killed renamable $sgpr4_sgpr5_sgpr6_sgpr7, 0, 0, 0, 0, 0, 0, 0, implicit $exec
S_CBRANCH_VCCNZ %bb.5, implicit $vcc
bb.4:
successors: %bb.5
renamable $sgpr12_sgpr13_sgpr14_sgpr15 = S_LOAD_DWORDX4_IMM killed renamable $sgpr2_sgpr3, 64, 0, 0
renamable $vgpr2 = BUFFER_ATOMIC_ADD_OFFSET_RTN killed renamable $vgpr2, killed renamable $sgpr12_sgpr13_sgpr14_sgpr15, 0, 0, 0, implicit $exec
bb.5:
successors: %bb.6
bb.6:
FLAT_STORE_DWORD $vgpr3_vgpr4, $vgpr2, 0, 0, 0, 0, implicit $exec, implicit $flat_scr
S_ENDPGM 0
...
|