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, H)

Test 1: uops

Code:

  ins v0.h[2], v1.h[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
1004208510131101210365024810001000200011000
1004208410131101210365024810001000200011000
1004208510131101210365024810001000200011000
1004203310011100010005024810001000200011000
1004203310011100010005078010361043200011000
1004203310011100010005024810001000200011000
1004203310011100010005024810001000200011000
1004203310011100010005024810001000208211000
1004208410131101210365078010361042200011000

Test 2: Latency 1->1

Code:

  ins v0.h[2], v1.h[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)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)
10204200331010110110000010010000300509248101002001000620020012110000100
10204200331010110110000010010000300509248101002001000420020008110000100
10204200331010110110000010010000300509248101002001000420020008110000100
10204200331010110110000010010000300509248101002001000420020008110000100
10204200331010110110000010010000300509248101002001000420020008110000100
10204200331010110110000010010000300509248101002001000420020008110000100
10204200331010110110000010010000300509248101002001000420020008110000100
10204200331010110110000010010000300509248101002001000420020008110000100
10204200331010110110000010010000300509248101002001000420020008110000100
10204200331010110110000010010000300509248101002001000420020008110000100

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)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)
100242003310021211000002010000705092471002020100002020000111000010
100242003310021211000002010000705092481002020100002020000111000010
100242003310021211000002010000705092481002020100002020000111000010
100242003310021211000002010000705092481002020100002020000111000010
100242003310021211000002010000705092481002020100002020000111000010
100252006610029211000802010034705092481002020100002020000111000010
100242003310021211000002010000695095641005420100492020000111000010
100242003310021211000002010000705092481002020100002020000111000010
100242003310021211000002010000705092481002020100002020000111000010
100242003310021211000002010000705092481002020100002020000111000010

Test 3: Latency 1->2

Code:

  ins v0.h[2], v0.h[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)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 ldst uop inputs (80)map simd uop inputs (81)? int output thing (e9)? ldst retires (ed)? simd retires (ee)? int retires (ef)
1020420033101011011000001001000030050958010134200100462000200081010000100
1020420033101011011000001001000030050924810100200100042000200081010000100
1020420033101011011000001001000030050924810100200100042000200081010000100
1020420033101011011000001001000030050924810100200100042000200081010000100
1020420033101011011000001001000030050924810100200100042000200081010000100
1020420033101011011000001001000030050924810100200100042000200081010000100
1020420033101011011000001001000030050924810100200100042020200942010000100
1020420033101011011000001001000030050924810100200100042000200081010000100
1020420033101011011000001001000030050924810100200100042000200081010000100
1020420033101011011000001001000030050924810100200100042000200081010000100

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.h[2], v8.h[1]
  movi v1.16b, 0
  ins v1.h[2], v8.h[1]
  movi v2.16b, 0
  ins v2.h[2], v8.h[1]
  movi v3.16b, 0
  ins v3.h[2], v8.h[1]
  movi v4.16b, 0
  ins v4.h[2], v8.h[1]
  movi v5.16b, 0
  ins v5.h[2], v8.h[1]
  movi v6.16b, 0
  ins v6.h[2], v8.h[1]
  movi v7.16b, 0
  ins v7.h[2], v8.h[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)
1602044045080110101800091008001330032005280112200800122001600261160000100
1602044010880110101800091008001330032005280112200800122001600241160000100
1602044009980110101800091008001330032005280112200800122001600241160000100
1602044008680109101800081008001230032020480150200800502001600261160000100
1602044010880109101800081008001230032005280112200800122001600241160000100
1602044008680109101800081008001230032005280112200800122001600241160000100
1602044008680109101800081008001230032005280112200800122001600241160000100
1602044008680109101800081008001230032005280112200800122001600241160000100
1602044008680109101800081008001230032005280112200800122001600241160000100
1602044008680109101800081008001230032005280112200800122001600241160000100

1000 unrolls and 10 iterations

Result (median cycles for code divided by count): 0.5050

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)
1600244388180020118000910800133032000080010208000020160000116000010
1600244125380011118000010800003032018880056208004620160000116000010
1600244045580011118000010800003032000080010208000020160000116000010
1600244041480011118000010800003032000080010208000020160000116000010
1600244037380011118000010800003032000080010208000020160000116000010
1600244040080011118000010800003032000080010208000020160000116000010
1600244038380011118000010800003032000080010208000020160000116000010
1600244037580011118000010800003032000080010208000020160000116000010
1600244036180011118000010800003032000080010208000020160000116000010
1600244040080011118000010800003032000080010208000020160000116000010

Test 5: throughput

Count: 16

Code:

  ins v0.h[2], v16.h[1]
  ins v1.h[2], v16.h[1]
  ins v2.h[2], v16.h[1]
  ins v3.h[2], v16.h[1]
  ins v4.h[2], v16.h[1]
  ins v5.h[2], v16.h[1]
  ins v6.h[2], v16.h[1]
  ins v7.h[2], v16.h[1]
  ins v8.h[2], v16.h[1]
  ins v9.h[2], v16.h[1]
  ins v10.h[2], v16.h[1]
  ins v11.h[2], v16.h[1]
  ins v12.h[2], v16.h[1]
  ins v13.h[2], v16.h[1]
  ins v14.h[2], v16.h[1]
  ins v15.h[2], v16.h[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)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)
1602048009716010510116000401001600083006400361601082001600122003200281160000100
1602048003416010710116000601001600103006402041601532001600632003200281160000100
1602048003516010710116000601001600103006400361601082001600122003200281160000100
1602048003416010510116000401001600083006400361601082001600122003200241160000100
1602048003416010510116000401001600083006400361601082001600122003200241160000100
1602048003416010510116000401001600083006400361601082001600122003200281160000100
1602048003416010710116000601001600103006400361601082001600122003200241160000100
1602048003416010510116000401001600083006400361601082001600122003200241160000100
1602048003416010510116000401001600083006401921601502001600582003200241160000100
1602048003416010510116000401001600083006400361601082001600122003200241160000100

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)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 ldst uop inputs (80)map simd uop inputs (81)? int output thing (e9)? ldst retires (ed)? simd retires (ee)? int retires (ef)
16002480205160015111600041016000803006400441600202001600142003201281016000010
16002480124160011111600001016000003006400001600102001600002003200001016000010
16002480034160011111600001016000003006400001600102001600002003200001016000010
16002480034160011111600001016000003006400001600102001600002003200001016000010
16002480034160011111600001016000003006400001600102001600002003200001016000010
16002480034160011111600001016000003006400001600102001600002003200001016000010
16002480034160011111600001016000003006400001600102001600002003200001016000010
16002480034160011111600001016000003006400001600102001600002003201221016000010
16002480039160011111600001016000003006400001600102001600002003200001016000010
16002480034160011111600001016000003006400001600102001600002003200001016000010