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

FRINTI (scalar, H)

Test 1: uops

Code:

  frinti h0, h0
  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)031e3f4e51schedule 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)a9accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
1004303724061254725100010001000398160130183037303724143289510001000100030373037111001100000073116112629100030383038303830383038
10043037241861254725100010001000398160130183037303724143289510001000100030373037111001100000373116112629100030383038303830383038
1004303723061254725100010001000398160030183037303724143289510001000100030373037111001100000073116112629100030383038303830383038
1004303724061254725100010001000398160130183037303724143289510001000100030373037111001100000073116112629100030383038303830383038
1004303724061254725100010001000398160130183037303724143289510001000100030373037111001100000073116112629100030383038303830383038
1004303724061254725100010001000398160130183037303724143289510001000100030373037111001100000073116112629100030383038303830383038
10043037233961254725100010001000398160130183037303724143289510001000100030373037111001100000073116112642100030383038303830383038
1004303724061254725100010001000398160130183037303724143289510001000100030373037111001100000373116112629100030383038303830383038
1004303723061254725100010001000398160030183037303724143289510001000100030373037111001100000073116112629100030383038303830383038
10043037240884254725100010001000398160030183037303724143289510001000100030373037111001100000073116112629100030383038303830383038

Test 2: Latency 1->2

Code:

  frinti h0, h0
  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)03l2 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)696d6emap 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)l1d cache writeback (a8)a9acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
10204300372330001200103295472510100100100001001000050042771603001830037300372826432874510100200100002001000030037300371110201100991001001000010000000192071011611296330100001003003830038300383003830038
1020430037233000000612954725101001001000010010000500427716030018300373003728264328745101002001000020010000300373003711102011009910010010000100000400071011611296330100001003003830038300383003830038
10204300372470000006129547251010010010000100100005004277160300183003730037282643287451010020010000200106583003730037111020110099100100100001000003012071011611296330100001003003830038300383003830038
102043003723300000010329547251010010010000100100005004277160300183003730037282643287451010020010000200100003003730037111020110099100100100001000005300071011611296330100001003003830038300383003830038
10204300372330000006129547251010010010000100100005004277160300183003730037282643287451010020010000200100003003730037111020110099100100100001000005100071011611296330100001003003830038300383003830038
10204300372320000006129547251010010010000100100005004277160300183003730037282643287451010020010000200100003003730037111020110099100100100001000004400071011611296330100001003003830038300383003830038
10204300372340000008929547251010010010000100100005004277160300543003730037282643287451010020010000200100003003730037111020110099100100100001000001200071011611296330100001003003830038300383003830038
102043003723300000017229547251010010010000100100005004277160300183003730037282643287451010020010000200100003003730037111020110099100100100001000004900071011611296330100001003003830038300383003830038
10204300372330000006129547251010010010000100100005004277160300183003730037282643287451010020010000200100003003730037111020110099100100100001000004600071011611296330100001003003830038300383003830038
1020430037232000000199629547251010010010000100100005004277160300183003730037282643287451010020010000200100003003730037111020110099100100100001000004600071011611296330100001003003830038300383003830038

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0037

retire uop (01)cycle (02)03mmu table walk data (08)l2 tlb miss data (0b)1e3f4e51schedule 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)accdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
100243003722501061295472510010101000010100005042771600300180300843008428300328767100102010000201000030037300371110021109101010000100006402162229629010000103003830038300383003830038
100243003722500061295472510010101000510100005042771600300180300373003728286328767100102010000201000030037300371110021109101010000100006402162229629010000103003830038300383003830038
100243003722500061295472510010101000010100005042771601300180300373003728286328767100102210000201000030037300371110021109101010000100006402162229629010000103008530038300383003830038
100243003722500061295472510010101000010100005042771600300180300373003728286328767100102010000201000030037300371110021109101010000100006402162229629010000103003830038300383003830038
100243008422500061295472510010101000010100005042771601300180300373003728286328767100102010000201000030037300371110021109101010000100006402162229629010000103003830038300383003830038
100243003722510061295472510010101000010100005042771601300180300373003728286328767100102010000201000030037300371110021109101010000100006402162229629010000103003830038300383003830038
100243003722500061295472510010101000010100005042771601300180300373003728286328767100102010000201000030037300371110021109101010000100306402162229629010000103003830038300383003830038
1002430037225000887295473710010101000010100005042771601300183300373003728286328767100102010000201000030037300371110021109101010000100006402162229629010000103003830038300383003830038
100243003722500061295472510010101000010100005042771600300180300373003728286328767100102010000201000030037300371110021109101010000100006402162229629010000103003830086300383003830038
100243003722500061295472510010101000010100005042771600300180300373003728286328767100102010000201000030037300371110021109101010000100006402162229629010000103003830038300383003830038

Test 3: throughput

Count: 8

Code:

  frinti h0, h8
  frinti h1, h8
  frinti h2, h8
  frinti h3, h8
  frinti h4, h8
  frinti h5, h8
  frinti h6, h8
  frinti h7, h8
  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)191e3f51schedule 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 cache writeback (a8)acbranch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
802042005915600128532580108100800081008002050064013212002020039200399977699908012020080032200800322003920039118020110099100100800001000011151180160020036800001002004020040200402004020040
80204200391550009512580108100800081008002050064013202002020039200399977699908012020080032200800322003920039118020110099100100800001000011151180160020036800001002004020040200402004020040
80204200391550004952580108100800081008002050064013202002020039200399977699908012020080032200800322003920039118020110099100100800001000011151181160020036800001002004020040200402004020040
80204200391550008032580108100800081008002050064013212005920039200399977699908012020080032200800322003920039118020110099100100800001000011151180160020036800001002004020040200402004020040
80204200391550001602580108100800081008002050064013202002020039200399977699908012020080032200800322003920039118020110099100100800001000011151180164420036800001002004020040200402004020040
80204200391550002582580108100800081008002050064013202002020039200399977699908012020080032200800322003920039118020110099100100800001000011151180160020036800001002004020040200402004020040
80204200391550008202580108100800081008002050064013212002020039200399977699908012020080032200800322003920039118020110099100100800001000011151180161020036800001002004020040200402004020040
80204200391550008542580108100800081008002050064013202002020039200399977699908012020080032200800322003920039118020110099100100800001000011151180160020036800001002004020040200402004020040
8020420039155000302580108100800081008002050064013202002020039200399977699908012020080032200800322003920039118020110099100100800001000011151180161120036800001002004020040200402004020040
802042003915600010212580108100800081008002050064013202002020039200399977699908012020080032200800322003920039118020110099100100800001000311151200160020036800001002004020040200402004020040

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)03mmu table walk data (08)18191e1f3a3f51schedule 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)l1d cache writeback (a8)a9acc2cfl1i cache miss demand (d3)d5map dispatch bubble (d6)dadbddfetch restart (de)e0eaeb? simd retires (ee)? int retires (ef)f5f6f7f8fd
80024200391560000006125800101080000108000050640000120020200392003999963100198001020800002080000200392003911800211091010800001000027000502008160057200360080000102004020040200402004020040
8002420039155000000402580010108000010800005064000012002020039200399996310019800102080000208000020039200391180021109101080000100000000502005160065200360080000102004020040200402004020040
80024200391550000003312580010108000010800005064000012002020039200399996310019800102080000208000020039200391180021109101080000100000000502005160055200360080000102004020040200402004020040
800242003915600000070525800101080000108000050640000020020200392003999963100198001020800002080000200392003911800211091010800001000047000502006160066200360080000102004020040200402004020040
80024200391550000004044801091080195108010550640816120063201032009710003121004680108228020420800002009020151218002110910108000010202045522503808340085200840080000102004020040200402004020040
80024200391550111321081237448010810800981080098506407760200692009320089100067100468011520800992080099200992009121800211091010800001004000870502005160088200360080000102004020040200402004020040
8002420039155000300054066802061080099108009950640000020020200392003999967100198001020800002080000200392003911800211091010800001000000962502008160056200360080000102004020040200402004020098
80024200911570001500402580010108000010800005064000002033120148201069996710075801082080105208010420098200391180021109101080000100001030502008160058200360080000102004020040200402004020040
8002420039155000000402580010108000010800005064000002002020039200399996310019800102080000208000020039200391180021109101080000100000000502007160065200360080000102004020040200402004020040
8002420039150000900402580010108000010800005064000002002020039200399996310019800102080000208000020039200391180021109101080000100002000502008160056200360080000102004020040200402004020040