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, S)

Test 1: uops

Code:

  ins v0.s[2], v1.s[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.s[2], v1.s[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 simd uop inputs (81)? int output thing (e9)? simd retires (ee)? int retires (ef)
1020420033101011011000010010000300509248101002001000620020012110000100
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)
10024200331002121100002010000705092471002020100002020000111000010
10024200331002121100002010000705092481002020100002020000111000010
10024200331002121100002010000705092481002020100002020000111000010
10024200331002121100002010000705092481002020100002020096111000010
10024200331002121100002010000705092481002020100002020000111000010
10024200331002121100002010000705092471002020100002020000111000010
10024200331002121100002010000705092481002020100002020000111000010
10024200331002121100002010000705092481002020100002020000111000010
10024200331002121100002010000705092481002020100002020000111000010
10024200331002121100002010000705092481002020100002020000111000010

Test 3: Latency 1->2

Code:

  ins v0.s[2], v0.s[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
1020420033101011011000010010000300509780101362001004820020008110000100
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)
10024200331002121100002010000705092481002020100042020000111000010
10024200331002121100002010000705092481002020100002020000111000010
10024200331002121100002010000705092481002020100002020000111000010
10024200331002121100002010000705092481002020100002020000111000010
10024200331002121100002010000705092481002020100002020000111000010
10024200331002121100002010000705092481002020100002020000111000010
10024200331002121100002010000705092481002020100002020000111000010
10024200331002121100002010000705092481002020100002020000111000010
10024200331002121100002010000705092481002020100002020000111000010
10024200331002121100002010000705092481002020100002020000111000010

Test 4: throughput

Count: 8

Code:

  movi v0.16b, 0
  ins v0.s[2], v8.s[1]
  movi v1.16b, 0
  ins v1.s[2], v8.s[1]
  movi v2.16b, 0
  ins v2.s[2], v8.s[1]
  movi v3.16b, 0
  ins v3.s[2], v8.s[1]
  movi v4.16b, 0
  ins v4.s[2], v8.s[1]
  movi v5.16b, 0
  ins v5.s[2], v8.s[1]
  movi v6.16b, 0
  ins v6.s[2], v8.s[1]
  movi v7.16b, 0
  ins v7.s[2], v8.s[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 simd uop inputs (81)? int output thing (e9)? simd retires (ee)? int retires (ef)
1602044047880110101800091008001330032005280112200800122001600241160000100
1602044011080110101800091008001330032005680113200800132001600241160000100
1602044008680109101800081008001230032005280112200800122001600241160000100
1602044008680109101800081008001230032005280112200800122001600241160000100
1602044008680109101800081008001230032005280112200800122001600941160000100
1602044011680110101800091008001330032005280112200800122001600261160000100
1602044038380109101800081008001230032005280112200800122001600241160000100
1602044008680109101800081008001230032005280112200800122001600241160000100
1602044008680109101800081008001230032005280112200800122001600241160000100
1602044008680109101800081008001230032005280112200800122001600241160000100

1000 unrolls and 10 iterations

Result (median cycles for code divided by count): 0.5053

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)
1600244375080020118000910800133032000080010208000020160000116000010
1600244121480011118000010800003032000080010208000020160000116000010
1600244044180011118000010800003032000080010208000020160000116000010
1600244042980011118000010800003032000080010208000020160000116000010
1600244042580011118000010800003032000080010208000020160000116000010
1600244043880011118000010800003032000080010208000020160000116000010
1600244042580011118000010800003032000080010208000020160000116000010
1600244042580011118000010800003032000080010208000020160000116000010
1600244042580011118000010800003032000080010208000020160094116000010
1600244087480011118000010800003032000080010208000020160000116000010

Test 5: throughput

Count: 16

Code:

  ins v0.s[2], v16.s[1]
  ins v1.s[2], v16.s[1]
  ins v2.s[2], v16.s[1]
  ins v3.s[2], v16.s[1]
  ins v4.s[2], v16.s[1]
  ins v5.s[2], v16.s[1]
  ins v6.s[2], v16.s[1]
  ins v7.s[2], v16.s[1]
  ins v8.s[2], v16.s[1]
  ins v9.s[2], v16.s[1]
  ins v10.s[2], v16.s[1]
  ins v11.s[2], v16.s[1]
  ins v12.s[2], v16.s[1]
  ins v13.s[2], v16.s[1]
  ins v14.s[2], v16.s[1]
  ins v15.s[2], v16.s[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)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)
160204800731601051011600041001600083006400361601082001600122003200241160000100
160204800341601071011600061001600103006400361601082001600122003200241160000100
160205800681601411011600401001600523006400361601082001600122003200241160000100
160204800341601051011600041001600083006400361601082001600122003200241160000100
160204800341601051011600041001600083006400361601082001600122003200241160000100
160204800341601051011600041001600083006400361601082001600122003200241160000100
160204800341601051011600041001600083006400361601082001600122003200241160000100
160204800341601051011600041001600083006400361601082001600122003200241160000100
160204800341601051011600041001600083006400361601082001600122003200241160000100
160205800691601431011600421001600543006400361601082001600122003200241160000100

1000 unrolls and 10 iterations

Result (median cycles for code divided by count): 0.5003

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)
160024803301600171116000610160010306400441600202016001420320000116000010
160024800831600111116000010160000306400001600102016000020320000116000010
160024800391600111116000010160000306400001600102016000020320000116000010
160024800391600111116000010160000306400001600102016000020320000116000010
160025800731600451116003410160042306400001600102016000020320000116000010
160024800391600111116000010160000306400001600102016000020320000116000010
160024800341600111116000010160000306400001600102016000020320000116000010
160024800341600111116000010160000306400001600102016000020320000116000010
160024800391600111116000010160000306400001600102016000020320000116000010
160024800391600111116000010160000306400001600102016000020320000116000010