Apple Microarchitecture Research by Dougall Johnson

M1/A14 P-core (Firestorm): Overview | Base Instructions | SIMD and FP Instructions
M1/A14 E-core (Icestorm):  Overview | Base Instructions | SIMD and FP Instructions

INS (element, B)

Test 1: uops

Code:

  ins v0.b[2], v1.b[1]
  movi v0.16b, 1
  movi v1.16b, 2

(no loop instructions)

1000 unrolls and 1 iteration

Retires: 1.000

Issues: 1.000

Integer unit issues: 0.001

Load/store unit issues: 0.000

SIMD/FP unit issues: 1.000

retire uop (01)cycle (02)schedule uop (52)schedule int uop (53)schedule simd uop (54)dispatch simd uop (57)ldst uops in schedulers (5b)dispatch uop (78)map simd uop (7e)map simd uop inputs (81)? int output thing (e9)? simd retires (ee)
1004203310011100010005024810001000200011000
1004203310011100010005024810001000200011000
1004203310011100010005024810001000200011000
1004203310011100010005024810001000200011000
1004203310011100010005024810001000200011000
1004203310011100010005024810001000200011000
1004203310011100010005024810001000200011000
1004203310011100010005024810001000200011000
1004203310011100010005024810001000200011000
1004203310011100010005024810001000200011000

Test 2: Latency 1->1

Code:

  ins v0.b[2], v1.b[1]
  movi v0.16b, 1
  movi v1.16b, 2

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code): 2.0033

retire uop (01)cycle (02)schedule uop (52)schedule int uop (53)schedule simd uop (54)dispatch int uop (56)dispatch simd uop (57)int uops in schedulers (59)ldst uops in schedulers (5b)dispatch uop (78)map int uop (7c)map simd uop (7e)map int uop inputs (7f)map ldst uop inputs (80)map simd uop inputs (81)? int output thing (e9)? ldst retires (ed)? simd retires (ee)? int retires (ef)
102042003310101101100001001000030050924810100200100062000200081010000100
102042003310101101100001001000030050924810100200100042000200081010000100
102042003310101101100001001000030050924810100200100042000200081010000100
102042003310101101100001001000030050924810100200100042000200081010000100
102042003310101101100001001000030050924810100200100042000200081010000100
102042003310101101100001001000030050924810100200100042000200081010000100
102042003310101101100001001000030050924810100200100042000200081010000100
102042003310101101100001001000030050924810100200100042000200081010000100
102042003310101101100001001000030050924810100200100042000200081010000100
102042003310101101100001001000030050924810100200100042000200081010000100

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0033

retire uop (01)cycle (02)schedule uop (52)schedule int uop (53)schedule simd uop (54)dispatch int uop (56)dispatch simd uop (57)int uops in schedulers (59)ldst uops in schedulers (5b)dispatch uop (78)map int uop (7c)map simd uop (7e)map int uop inputs (7f)map simd uop inputs (81)? int output thing (e9)? simd retires (ee)? int retires (ef)
10024200331002121100002010000705092471002020100002020000111000010
10024200331002121100002010000705092481002020100002020000111000010
10024200331002121100002010000705092481002020100002020000111000010
10024200331002121100002010000705092481002020100002020000111000010
10024200331002121100002010000705092481002020100002020000111000010
10024200331002121100002010000705092481002020100002020000111000010
10024200331002121100002010000705092481002020100002020000111000010
10024200331002121100002010000705092481002020100002020000111000010
10024200331002121100002010000665095801005420100482020000111000010
10024200331002121100002010000705092481002020100002020000111000010

Test 3: Latency 1->2

Code:

  ins v0.b[2], v0.b[1]
  movi v0.16b, 1

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code): 2.0033

retire uop (01)cycle (02)schedule uop (52)schedule int uop (53)schedule simd uop (54)dispatch int uop (56)dispatch simd uop (57)int uops in schedulers (59)ldst uops in schedulers (5b)dispatch uop (78)map int uop (7c)map simd uop (7e)map int uop inputs (7f)map simd uop inputs (81)? int output thing (e9)? simd retires (ee)? int retires (ef)
1020420033101011011000010010000300509248101002001000420020008110000100
1020420033101011011000010010000300509248101002001000420020008110000100
1020420033101011011000010010000300509248101002001000420020008110000100
1020420033101011011000010010000300509248101002001000420020008110000100
1020420033101011011000010010000300509248101002001000420020008110000100
1020420033101011011000010010000300509248101002001000420020008110000100
1020420033101011011000010010000300509248101002001000420020008110000100
1020420033101011011000010010000300509248101002001000420020008110000100
1020420033101011011000010010000300509248101002001000420020008110000100
1020420033101011011000010010000300509248101002001000420020008110000100

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0033

retire uop (01)cycle (02)schedule uop (52)schedule int uop (53)schedule simd uop (54)dispatch int uop (56)dispatch simd uop (57)int uops in schedulers (59)ldst uops in schedulers (5b)dispatch uop (78)map int uop (7c)map simd uop (7e)map int uop inputs (7f)map simd uop inputs (81)? int output thing (e9)? simd retires (ee)? int retires (ef)
10024200331002121100002010000705092481002020100002020000111000010
10024200331002121100002010000705092481002020100002020000111000010
10024200331002121100002010000705092481002020100002020000111000010
10024200331002121100002010000705092481002020100002020000111000010
10024200331002121100002010000705092481002020100002020000111000010
10024200331002121100002010000705092481002020100002020000111000010
10024200331002121100002010000705092481002020100002020000111000010
10024200331002121100002010000705092481002020100002020000111000010
10024200331002121100002010000705092481002020100002020000111000010
10024200331002121100002010000705092481002020100002020000111000010

Test 4: throughput

Count: 8

Code:

  movi v0.16b, 0
  ins v0.b[2], v8.b[1]
  movi v1.16b, 0
  ins v1.b[2], v8.b[1]
  movi v2.16b, 0
  ins v2.b[2], v8.b[1]
  movi v3.16b, 0
  ins v3.b[2], v8.b[1]
  movi v4.16b, 0
  ins v4.b[2], v8.b[1]
  movi v5.16b, 0
  ins v5.b[2], v8.b[1]
  movi v6.16b, 0
  ins v6.b[2], v8.b[1]
  movi v7.16b, 0
  ins v7.b[2], v8.b[1]
  movi v8.16b, 9

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code divided by count): 0.5011

retire uop (01)cycle (02)schedule uop (52)schedule int uop (53)schedule simd uop (54)dispatch int uop (56)dispatch simd uop (57)int uops in schedulers (59)ldst uops in schedulers (5b)dispatch uop (78)map int uop (7c)map simd uop (7e)map int uop inputs (7f)map ldst uop inputs (80)map simd uop inputs (81)? int output thing (e9)? ldst retires (ed)? simd retires (ee)? int retires (ef)
160204405558010910180008100800123003200528011220080012200016002610160000100
160204401068011010180009100800133003200528011220080012200016002410160000100
160204400868010910180008100800123003200528011220080012200016002410160000100
160204400868010910180008100800123003202048015020080050200016002610160000100
160204400868010910180008100800123003200528011220080012200016002410160000100
160204400868010910180008100800123003200568011320080013200016002410160000100
160204400868010910180008100800123003200528011220080012200016002410160000100
160204400868010910180008100800123003200528011220080012200016002410160000100
160204400868010910180008100800123003200568011320080013200016002610160000100
160204401018011010180009100800133003200528011220080012200016002410160000100

1000 unrolls and 10 iterations

Result (median cycles for code divided by count): 0.5052

retire uop (01)cycle (02)schedule uop (52)schedule int uop (53)schedule simd uop (54)dispatch int uop (56)dispatch simd uop (57)int uops in schedulers (59)ldst uops in schedulers (5b)dispatch uop (78)map int uop (7c)map simd uop (7e)map int uop inputs (7f)map simd uop inputs (81)? int output thing (e9)? simd retires (ee)? int retires (ef)
1600244387580020118000910800133032005280022208001220160026116000010
1600244124380020118000910800133032005680023208001320160000116000010
1600244043280011118000010800003032000080010208000020160000116000010
1600244038680011118000010800003032000080010208000020160000116000010
1600244042580011118000010800003032000080010208000020160000116000010
1600244039080011118000010800003032019280057208004720160000116000010
1600244043880011118000010800003032000080010208000020160000116000010
1600244041680011118000010800003032000080010208000020160000116000010
1600244042080011118000010800003032000080010208000020160000116000010
1600244042080011118000010800003032000080010208000020160000116000010

Test 5: throughput

Count: 16

Code:

  ins v0.b[2], v16.b[1]
  ins v1.b[2], v16.b[1]
  ins v2.b[2], v16.b[1]
  ins v3.b[2], v16.b[1]
  ins v4.b[2], v16.b[1]
  ins v5.b[2], v16.b[1]
  ins v6.b[2], v16.b[1]
  ins v7.b[2], v16.b[1]
  ins v8.b[2], v16.b[1]
  ins v9.b[2], v16.b[1]
  ins v10.b[2], v16.b[1]
  ins v11.b[2], v16.b[1]
  ins v12.b[2], v16.b[1]
  ins v13.b[2], v16.b[1]
  ins v14.b[2], v16.b[1]
  ins v15.b[2], v16.b[1]
  movi v16.16b, 17

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code divided by count): 0.5002

retire uop (01)cycle (02)schedule uop (52)schedule int uop (53)schedule simd uop (54)dispatch int uop (56)dispatch simd uop (57)dispatch ldst uop (58)int uops in schedulers (59)simd uops in schedulers (5a)ldst uops in schedulers (5b)dispatch uop (78)map int uop (7c)map ldst uop (7d)map simd uop (7e)map int uop inputs (7f)map simd uop inputs (81)? int output thing (e9)? simd retires (ee)? int retires (ef)
160204800881601071011600061001600100300064003616010820001600122003200281160000100
160204800341601071011600061001600100300064003616010820001600122003200241160000100
160204800341601071011600061001600100300064020016015220001600602003200241160000100
160204800341601051011600041001600080300064003616010820001600122003200241160000100
160204800341601051011600041001600080300064003616010820001600122003201201160000100
160204800341601051011600041001600080300064003616010820001600122003200241160000100
160204800341601051011600041001600080300064003616010820001600122003200241160000100
160204800341601051011600041001600080300064003616010820001600122003200241160000100
160204800341601051011600041001600080300064003616010820001600122003200241160000100
160204800341601051011600041001600080300064003616010820001600122003200241160000100

1000 unrolls and 10 iterations

Result (median cycles for code divided by count): 0.5002

retire uop (01)cycle (02)schedule uop (52)schedule int uop (53)schedule simd uop (54)schedule ldst uop (55)dispatch int uop (56)dispatch simd uop (57)int uops in schedulers (59)ldst uops in schedulers (5b)dispatch uop (78)map int uop (7c)map simd uop (7e)map int uop inputs (7f)map simd uop inputs (81)? int output thing (e9)? simd retires (ee)? int retires (ef)
1600248011916001511160004010160008306400441600202016001420320028116000010
1600248004416001111160000010160000306400001600102016000020320000116000010
1600248003416001111160000010160000306400001600102016000020320000116000010
1600258006916005311160042010160054306400001600102016000020320000116000010
1600248003416001111160000010160000306400001600102016000020320000116000010
1600248003416001111160000010160000306400001600102016000020320000116000010
1600248003416001111160000010160000306400001600102016000020320000116000010
1600248003416001111160000010160000306400001600102016000020320000116000010
1600248003416001111160000010160000306400001600102016000020320000116000010
1600248003416001111160000010160000306400001600102016000020320000116000010