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

FRINTA (vector, 4S)

Test 1: uops

Code:

  frinta v0.4s, v0.4s
  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: 0.000

Load/store unit issues: 0.000

SIMD/FP unit issues: 1.000

retire uop (01)cycle (02)031e1f3f4e51schedule uop (52)schedule simd uop (54)dispatch simd uop (57)ldst uops in schedulers (5b)60696d6emap stall dispatch (70)map rewind (75)map stall (76)dispatch uop (78)map simd uop (7e)map simd uop inputs (81)8283flush restart other nonspec (84)85inst all (8c)inst simd alu (9a)l1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
10043037231206125472510001000100039816013018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
1004303723006125472510001000100039816003018303730372414328951000100010003037303711100110000073116112703100030383038303830383038
1004303724006125472510001000100039816003018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
1004303723006125472510001000100039816013018303730372414328951000100010003037303711100110000373116112629100030383038303830383038
1004303723006125472510001000100039816003018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
1004303723006125472510001000100039816003018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
10043037231206125472510001000100039816013018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
1004303723006125472510001000100039816013018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
1004303723006125472510001000100039816003018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
1004303723006125472510001000100039816003018303730372414328951000100010003037303711100110000073116112629100030383038303830383038

Test 2: Latency 1->2

Code:

  frinta v0.4s, v0.4s
  movi v0.16b, 1
  movi v1.16b, 2

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code): 3.0037

retire uop (01)cycle (02)031e3f4e51schedule 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)60696d6emap stall dispatch (70)map rewind (75)map stall (76)dispatch uop (78)map int uop (7c)map simd uop (7e)map int uop inputs (7f)map simd uop inputs (81)8283flush restart other nonspec (84)85inst all (8c)inst branch (8d)inst branch taken (90)inst branch cond (94)inst int alu (97)inst simd alu (9a)9fl1d tlb access (a0)l1d tlb miss (a1)l1d cache writeback (a8)a9acc2c9cdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
1020430037232061295472510100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020110099100100100001000000000071021622296330100001003003830038300383003830038
1020430037233061295472510100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020110099100100100001000000000071021622296330100001003003830038300383003830038
1020430037233061295472510100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020110099100100100001000000000071021622296330100001003003830038300383003830038
1020430037232061295472510100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020110099100100100001000000000071021622296330100001003003830038300383003830038
1020430037233061295472510100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020110099100100100001000000000071021622296330100001003003830038300383003830038
1020430037233061295472510100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020110099100100100001000000000071021622296330100001003003830038300383003830038
1020430037232061295474410100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020110099100100100001000000300071021622296330100001003003830038300383003830038
1020430037233061295472510100100100001001000050042771601300183003730037282643287451010020010000200100003003730037111020110099100100100001000000000071021622296330100001003003830038300383003830038
1020430037233061295472510100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020110099100100100001000000000071021622296330100001003003830038300383003830038
1020430037233061295472510100100100001001000050042771601300183003730037282643287451010020010000200100003003730037111020110099100100100001000000000071021622296330100001003003830086300383003830038

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0037

retire uop (01)cycle (02)03mmu table walk instruction (07)mmu table walk data (08)l2 tlb miss instruction (0a)l2 tlb miss data (0b)18191e1f3a3f4e51schedule 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)60696d6emap stall dispatch (70)simd prf full (72)map rewind (75)map stall (76)dispatch uop (78)map int uop (7c)map simd uop (7e)map int uop inputs (7f)map simd uop inputs (81)8283flush restart other nonspec (84)85inst all (8c)inst branch (8d)inst branch taken (90)inst branch cond (94)inst int alu (97)inst simd alu (9a)9fl1d tlb access (a0)l1d tlb miss (a1)ld unit uop (a6)l1d cache writeback (a8)a9acc2cfd5map dispatch bubble (d6)daddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
10024300372250000000006129547251001010100001010000504277160030018300373003728286032876710010201000020100003003730037111002110910101000010000000064041606529629010000103003830038300383003830038
10024300372400000009008929547251001010100001010000504277160030018300373003728286032876710010201000020100003003730037111002110910101000010000000064051605629629010000103003830038300383003830038
10024300372250000000006129547251001010100001010000504277160130018300373003728286032876710010201000020100003003730037111002110910101000010000000064061606529629010000103003830038300383003830038
10024300372250000000006129547251001010100001010000504277160030018300373003728286032878610010201000020100003003730037111002110910101000010000100064061605429701310000103003830038300383008430038
1002430037225000000028806129547251001010100001010000504277160030018300373003728286032876710010201000020100003003730037111002110910101000010000000064051605529629010000103003830038300383003830168
10024300372250000000006129547251001010100001010000504277160030018300373003728286032876710010201000020100003003730037111002110910101000010000300064051606629629010000103003830038300383003830038
10024300372250000000006129547251001010100001010000504277160030018300373003728286032876710010201000020100003003730070111002110910101000010000400064051606629629010000103003830038300383003830038
100243003722500000000056729547251001010100001010000504277160130018300373003728286032876710010201000020100003003730037111002110910101000010000000064061606629629010000103003830038300383003830038
10024300372250000000006129547251001010100001010000504277160130018300373003728286032876710010201000020100003003730037111002110910101000010000000064061606629629010000103003830038300383003830038
10024300372250000000006129547251001010100001010000504277160130018300373003728286032876710010201000020100003003730037111002110910101000010000000064061606629629010000103003830085300383007930038

Test 3: throughput

Count: 8

Code:

  frinta v0.4s, v8.4s
  frinta v1.4s, v8.4s
  frinta v2.4s, v8.4s
  frinta v3.4s, v8.4s
  frinta v4.4s, v8.4s
  frinta v5.4s, v8.4s
  frinta v6.4s, v8.4s
  frinta v7.4s, v8.4s
  movi v8.16b, 9

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code divided by count): 0.2505

retire uop (01)cycle (02)03mmu table walk instruction (07)mmu table walk data (08)09l2 tlb miss data (0b)18191e1f3f51schedule 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)60696d6emap stall dispatch (70)map rewind (75)map stall (76)dispatch uop (78)map int uop (7c)map simd uop (7e)map int uop inputs (7f)map simd uop inputs (81)8283flush restart other nonspec (84)85inst all (8c)inst branch (8d)inst branch taken (90)inst branch cond (94)inst int alu (97)inst simd alu (9a)9fl1d tlb access (a0)l1d tlb miss (a1)ld unit uop (a6)st unit uop (a7)l1d cache writeback (a8)a9acc2branch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)eb? simd retires (ee)? int retires (ef)f5f6f7f8fd
80204200581550000000030258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100000000001115118116002003600800001002004020040200402004020040
80204200391560000000030258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100000000001115118016002003600800001002004020040200402004020040
80204200391550000000030258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100000010001115118816002003600800001002004020040200402004020040
80204200391550000000030258010810080008100800205006409640200202003920039997769990801202008003220080032200392003911802011009910010080000100000000001115118016002003600800001002004020040200402004020040
80204200391550000000030258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100000000001115118016002003600800001002004020040200402004020040
80204200391550000000030258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100000000001115118016002003600800001002004020040200402004020040
80204200391550000000030258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100000000001115118016002003600800001002004020040200402004020040
80204200391560000000030258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100000000001115118016002003600800001002004020040200402004020040
80204200391560000000030258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100000000001115118016002003600800001002004020040200402004020040
80204200391550000000030258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100000000001115118016002003600800001002004020040200402004020040

1000 unrolls and 10 iterations

Result (median cycles for code divided by count): 0.2505

retire uop (01)cycle (02)0318191e1f3f51schedule 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)60696b6d6emap stall dispatch (70)map rewind (75)map stall (76)dispatch uop (78)map int uop (7c)map simd uop (7e)map int uop inputs (7f)map simd uop inputs (81)8283flush restart other nonspec (84)85inst all (8c)inst branch (8d)inst branch taken (90)inst branch cond (94)inst int alu (97)inst simd alu (9a)9fl1d cache writeback (a8)acc2cfd2l1i cache miss demand (d3)d5map dispatch bubble (d6)d9daddfetch restart (de)e0eaeb? simd retires (ee)? int retires (ef)f5f6f7f8fd
800242005015500008925800101080000108000050640000020020020039200399996310019800102080000208000020039200391180021109101080000101305020707160057200360080000102004020040200402004020040
800242003915500004025800101080000108000050640000120020020039200399996310019800102080000208000020039200391180021109101080000100005020105160077200360080000102004020040200402004020040
800242003915511904025800101080000108000050640000020020020039200399996310019800102080000208000020039200391180021109101080000100005020007160056200360080000102004020040200402004020040
800242003915500004025800101080000108000050640000120020020039200399996310019800102080000208000020039200391180021109101080000100005020007160064200360080000102004020040200402004020040
8002420039155000055725800101080000108000050640000020020020039200399996310019800102080000208000020039200391180021109101080000100005020007160056200360080000102004020040200402004020040
800242003915600004025800101080000108000050640000120020020039200399996310019800102080000208000020039200391180021109101080000100005020007160057200360080000102004020040200402004020040
800242003915500004025800101080000108000050640000020020020039200399996310019800102080000208000020039200391180021109101080000100005020008160075200360080000102004020040200402004020040
800242003915500004025800101080000108000050640000120020020039200399996310019800102080000208000020039200391180021109101080000100005020207160057200360080000102004020040200402004020040
800242003915600004025800101080000108000050640000120020020039200399996310019800102080000208000020039200391180021109101080000100005020107160075200360080000102004020040200402004020040
800242003915510004025800101080000108000050640000120020020039200399996310019800102080000208000020039200391180021109101080000100005020105160057200360080000102004020040200402004020040