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

SQDMLAL (by element, D)

Test 1: uops

Code:

  sqdmlal d0, s1, v2.s[1]
  movi v0.16b, 1
  movi v1.16b, 2
  movi v2.16b, 3

(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)
1004303310011100010007590510001000300011000
1004303310011100010007590510001000300011000
1004303310011100010007590510001000300011000
1004303310011100010007590510001000300011000
1004303310011100010007590510001000300011000
1004303310011100010007590510001000300011000
1004303310011100010007590510001000300011000
1004303310011100010007590510001000300011000
1004303310011100010007590510001000300011000
1004303310011100010007590510001000300011000

Test 2: Latency 1->1

Code:

  sqdmlal d0, s1, v2.s[1]
  movi v0.16b, 1
  movi v1.16b, 2
  movi v2.16b, 3

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code): 3.0033

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)
1020430033101011011000010010000300768905101002001000420030012110000100
1020430033101011011000010010000300768905101002001000420030012110000100
1020430033101011011000010010000300768905101002001000420030012110000100
1020430033101011011000010010000300768905101002001000420030012110000100
1020430033101011011000010010000300768905101002001000420030012110000100
1020430033101011011000010010000300768905101002001000420030012110000100
1020430033101011011000010010000300768905101002001000420030012110000100
1020430033101011011000010010000300768905101002001000420030012110000100
1020430033101011011000010010000300768905101002001000420030012110000100
1020430033101011011000010010000300768905101002001000420030012110000100

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0033

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)
100243003310021211000002010000707689051002020100002030000111000010
100243003310021211000002010000707689051002020100002030000111000010
100243003310021211000002010000707689051002020100002030000111000010
100243003310021211000002010000707689051002020100002030000111000010
100243003310021211000002010000707689051002020100002030012111000010
100243003310021211000002010000707689051002020100002030000111000010
100243003310021211000002010000707689051002020100002030000111000010
100243003310021211000002010000707689051002020100042030000111000010
100243003310021211000002010000707689051002020100002030000111000010
100243003310021211000002010000707689051002020100002030000111000010

Test 3: Latency 1->2

Code:

  sqdmlal d0, s0, 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): 3.0033

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)
102043003310101101100001001000030076890510100200100062000300181010000100
102043003310101101100001001000030076890510100200100042000300121010000100
102043003310101101100001001000030076890510100200100042000300121010000100
102043003310101101100001001000030076890510100200100042000300121010000100
102043003310101101100001001000030076890510100200100042000300121010000100
102043003310101101100001001000030076890510100200100042000300121010000100
102043003310101101100001001000030076890510100200100042000300121010000100
102043003310101101100001001000030076890510100200100042000300121010000100
102043003310101101100001001000030076890510100200100042000300121010000100
102043003310101101100001001000030076890510100200100042000300121010000100

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0033

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)
10024300331002121100002010000707689051002020100002030000111000010
10024300331002121100002010000707689051002020100002030000111000010
10024300331002121100002010000677692471005120100442030000111000010
10024300331002121100002010000707689051002020100042030000111000010
10024300331002121100002010000707689051002020100002030000111000010
10024300331002121100002010000707689051002020100002030000111000010
10024300331002121100002010000707689051002020100002030000111000010
10024300331002121100002010000667710891015220101612030000111000010
10024300331002121100002010000707689051002020100002030000111000010
10024300331002121100002010000707689051002020100002030000111000010

Test 4: Latency 1->3

Code:

  sqdmlal d0, s1, v0.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): 3.0033

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)
1020430033101011011000010010000300768905101002001000620030018110000100
1020430033101011011000010010000300768905101002001000420030012110000100
1020430033101011011000010010000300768905101002001000420030012110000100
1020430033101011011000010010000300768905101002001000420030012110000100
1020430033101011011000010010000300768905101002001000420030012110000100
1020430033101011011000010010000300768905101002001000420030012110000100
1020430033101011011000010010000300768905101002001000420030012110000100
1020430033101011011000010010000300768905101002001000420030012110000100
1020430033101011011000010010000300768905101002001000420030012110000100
1020430033101011011000010010000300768905101002001000420030012110000100

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0033

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)
10024300331002121100002010000707689051002020100002030000111000010
10024300331002121100002010000707689051002020100002030000111000010
10024300331002121100002010000707689051002020100002030000111000010
10024300331002121100002010000707689051002020100002030000111000010
10024300331002121100002010000707689051002020100002030000111000010
10024300331002121100002010000687692471005120100432030000111000010
10024300331002121100002010000707689051002020100002030000111000010
10024300331002121100002010000707689051002020100002030000111000010
10025300661002721100062010031707689051002020100002030000111000010
10024300331002121100002010000707689051002020100002030015111000010

Test 5: throughput

Count: 8

Code:

  movi v0.16b, 0
  sqdmlal d0, s8, v9.s[1]
  movi v1.16b, 0
  sqdmlal d1, s8, v9.s[1]
  movi v2.16b, 0
  sqdmlal d2, s8, v9.s[1]
  movi v3.16b, 0
  sqdmlal d3, s8, v9.s[1]
  movi v4.16b, 0
  sqdmlal d4, s8, v9.s[1]
  movi v5.16b, 0
  sqdmlal d5, s8, v9.s[1]
  movi v6.16b, 0
  sqdmlal d6, s8, v9.s[1]
  movi v7.16b, 0
  sqdmlal d7, s8, v9.s[1]
  movi v8.16b, 9
  movi v9.16b, 10

(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)
1602044046680109101800081008001230032005680113200800132002400391160000100
1602044011080110101800091008001330032005280112200800122002400361160000100
1602044008680109101800081008001230032005280112200800122002400361160000100
1602044008680109101800081008001230032005280112200800122002400361160000100
1602044008680109101800081008001230032005280112200800122002400361160000100
1602044008680109101800081008001230032005280112200800122002400361160000100
1602044008680109101800081008001230032005280112200800122002400361160000100
1602044008680109101800081008001230032005280112200800122002400361160000100
1602044008680109101800081008001230032005280112200800122002400361160000100
1602044008680109101800081008001230032005280112200800122002400361160000100

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)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)
1600244378080020118000910800130300320056800232008001320240000116000010
1600244125080011118000010800000300320000800102008000020240000116000010
1600244040780011118000010800000300320000800102008000020240000116000010
1600244041980011118000010800000300320000800102008000020240000116000010
1600244041980011118000010800000300320000800102008000020240000116000010
1600244041880011118000010800000300320000800102008000020240000116000010
1600244041880011118000010800000300320000800102008000020240000116000010
1600244051780011118000010800000300320000800102008000020240000116000010
1600244044980011118000010800000300320000800102008000020240000116000010
1600244044880011118000010800000300320000800102008000020240000116000010

Test 6: throughput

Count: 12

Code:

  sqdmlal d0, s12, v13.s[1]
  sqdmlal d1, s12, v13.s[1]
  sqdmlal d2, s12, v13.s[1]
  sqdmlal d3, s12, v13.s[1]
  sqdmlal d4, s12, v13.s[1]
  sqdmlal d5, s12, v13.s[1]
  sqdmlal d6, s12, v13.s[1]
  sqdmlal d7, s12, v13.s[1]
  sqdmlal d8, s12, v13.s[1]
  sqdmlal d9, s12, v13.s[1]
  sqdmlal d10, s12, v13.s[1]
  sqdmlal d11, s12, v13.s[1]
  movi v12.16b, 13
  movi v13.16b, 14

(fused SUBS/B.cc loop)

100 unrolls and 100 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 ldst uop inputs (80)map simd uop inputs (81)? int output thing (e9)? ldst retires (ed)? simd retires (ee)? int retires (ef)
12020460105120105101120004100120008300480044120110200120014200036003910120000100
12020460035120107101120006100120010300480036120108200120012200036003610120000100
12020560071120145101120044100120056300480044120110200120013200036003610120000100
12020460035120105101120004100120008300480036120108200120012200036003610120000100
12020460035120105101120004100120008300480036120108200120012200036003610120000100
12020460035120107101120006100120010300480044120110200120013200036003610120000100
12020460035120105101120004100120008300480036120108200120012200036003610120000100
12020460035120105101120004100120008300480036120108200120012200036003610120000100
12020460035120105101120004100120008300480036120108200120012200036003610120000100
12020460035120105101120004100120008300480036120108200120012200036003610120000100

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 ldst uop inputs (80)map simd uop inputs (81)? int output thing (e9)? ldst retires (ed)? simd retires (ee)? int retires (ef)
12002460252120015111200041012000830480000120010201200002003600001012000010
12002460035120011111200001012000030480000120010201200002003600001012000010
12002460035120011111200001012000030480000120010201200002003600001012000010
12002460035120011111200001012000030480000120010201200002003600001012000010
12002460035120011111200001012000030480000120010201200002003600001012000010
12002460035120011111200001012000030480000120010201200002003600001012000010
12002460035120011111200001012000030480000120010201200002003600001012000010
12002460035120011111200001012000030480000120010201200002003600001012000010
12002460035120011111200001012000030480000120010201200002003600001012000010
12002460035120011111200001012000030480000120010201200002003600001012000010