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, 2D)

Test 1: uops

Code:

  frinta v0.2d, v0.2d
  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)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
1004303724310325472510001000100039816003018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
1004303724010325472510001000100039816003018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
100430372308225472510001000100039816013018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
100430372406125472510001000100039816013018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
100430372308425472510001000100039816003018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
1004303723012425472510001000100039816013018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
1004303723010325472510001000100039816013018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
1004303723015925472510001000100039816003018303730372414328951000100010003037303711100110000373116112629100030383038303830383038
100430372406125472510001000100039816003018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
100430372406125472510001000100039816003018303730372414328951000100010003037303711100110000073116112629100030383038303830383038

Test 2: Latency 1->2

Code:

  frinta v0.2d, v0.2d
  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)18191e1f3f4e51schedule 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)ld unit uop (a6)l1d cache writeback (a8)a9acbranch mispred nonspec (cb)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
1020430037233000240612954725101001001000010010000500427716003001830037300372826432874510100200100002001000030037300371110201100991001001000010000000071011611296330100001003003830038300383003830038
102043003723300000612954725101001001000010010000500427716003001830037300372826432874510100200100002001000030037300371110201100991001001000010000000071011611296330100001003008530038300383003830038
102043003723300000612954725101001001000010010000500427716013002230037300372826432874510100200100002001000030037300371110201100991001001000010000000071011611296330100001003003830038300383003830038
102043003723200000612954725101001001000010010000500427716003001830037300372826432874510100200100002001000030037300371110201100991001001000010000000071011611296330100001003003830038300383003830038
102043003723200000612954725101001001000010010000500427716013001830037300372826432874510100200100002001000030037300371110201100991001001000010000000071011611296330100001003003830038300383003830038
102043003723300000612954725101001001000010010000500427716013001830037300372826432874510100200100002001000030037300371110201100991001001000010000000071011611296330100001003003830038300383003830038
102043003723300000612954725101001001000010010000500427716003001830037300372826432874510100200100002001000030037300371110201100991001001000010000000071011611296330100001003003830038300383003830038
102043003723300000612954725101001001000010010000500427716003001830037300372826432874510100200100002001000030037300371110201100991001001000010000000071011611296330100001003003830038300383003830038
102043003723200000612954725101001001000010010000500427716013001830037300372826432874510100200100002001000030037300371110201100991001001000010000000071011611296330100001003003830038300383003830038
102043003723200000612954725101001001000010010000500427716003001830037300372826432874510100200100002001000030037300371110201100991001001000010000000071011611296330100001003003830038300383003830038

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)18191e1f3f4e51schedule 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)l1d cache writeback (a8)a9acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
1002430037225000036061295472510010101000010100005042771601300183003730037282860328767100102010000201000030037300371110021109101010000100000006403163329629010000103003830038300383003830038
10024300372240000165061295472510010101000010100005042771601300183003730037282860328767100102010000201000030037300371110021109101010000100000006403163329629010000103003830038300383003830038
1002430037225000042061295472510010101000010100005042771600300183003730037282860328767100102010000201000030037300371110021109101010000100000006403163329629010000103003830038300383003830038
100243003722500000061295472510010101000010100005042771601300183003730037282860328767100102010000201000030037300371110021109101010000100000006403163329629010000103003830038300383003830038
100243003722500000061295472510010101000010100005042771601300183003730037282860328767100102010000201000030037300371110021109101010000100000006403163329629010000103003830038300383003830038
100243003722400000061295472510010101000010100005042771601300183003730037282860328767100102010000201000030037300371110021109101010000100000026403163329629010000103003830038300383003830038
10024300372330000690117295472510010101000010100005042771600300183003730037282860328767100102010000201000030037300371110022109101010000100000006403163329629010000103003830038300383003830038
100243003722500000061295472510010101000010100005042771600300183003730037282860328767100102010000201000030037300371110021109101010000100000006403163329629010000103003830038300383003830038
100243003722500000061295472510010101000010100005042771600300183003730037282860328767100102010000201000030037300371110021109101010000100000006403163329629010000103003830038300383003830038
100253003722500000061295292510010101000010100005042771600300183003730037282860328767100102010000201000030037300371110021109101010000100000006403163329629010000103003830038300383003830038

Test 3: throughput

Count: 8

Code:

  frinta v0.2d, v8.2d
  frinta v1.2d, v8.2d
  frinta v2.2d, v8.2d
  frinta v3.2d, v8.2d
  frinta v4.2d, v8.2d
  frinta v5.2d, v8.2d
  frinta v6.2d, v8.2d
  frinta v7.2d, v8.2d
  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 data (08)0918191e1f3a3f51schedule 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 miss (a1)ld unit uop (a6)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)? simd retires (ee)? int retires (ef)f5f6f7f8fd
8020420060161000000058258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100000000111511811611200360800001002004020040200402004020040
80204200391550000120030258010810080008100800205006401321200202003920039997769990801202008003220080032200392003911802011009910010080000100000000111511811621200360800001002004020040200402004020040
8020420039156000000030258010810080008100800205006401321200202003920039997769990801202008003220080032200392003911802011009910010080000100000000111511811611200360800001002004020040200402004020040
8020420039156000000030258010810080008100800205006401321200202007520039997769990801202008003220080032200392003911802011009910010080000100000000111511821611200360800001002004020040200402004020040
8020420101155000030030258010810080008100800205006401321200202003920039997769990801202008003220080032200392003911802011009910010080000100000000111511811611200360800001002004020040200402004020040
802042003915500001020030258010810080008100800205006401321200202003920039997769990801202008003220080032200392003911802011009910010080000100000000111511811611200360800001002004020040200402004020040
8020420039155000000030258010810080008100800205006401321200202003920039997769990801202008003220080032200392003911802011009910010080000100000000111511811611200360800001002004020040200402004020040
802042003915500000038429258010810080008100800205006401321200202003920039997769990801202008003220080032200392003911802011009910010080000100001000111511811611200360800001002004020040200402004020040
80204200391550000120030258010810080008100800205006401321200202003920039997769990801202008003220080032200392003911802011009910010080000100001000111511811611200360800001002004020114200402004020040
8020420039155000000030258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100001000111511811611200360800001002004020040200402004020040

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)0318191e3a3f51schedule 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)5f60696d6emap 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 miss (a1)l1d cache writeback (a8)acc2cfd0d5map dispatch bubble (d6)ddfetch restart (de)e0ea? simd retires (ee)? int retires (ef)f5f6f7f8fd
8002420040156002724525800101080000108000050640000002002020039200399996310019800102080000208000020039200391180021109101080000100000502401616171420036080000102004020040200402004020040
800242003915500024525800101080000108000050640000112002020039200399996310019800102080000208000020039200391180021109101080000100000502401416171020036080000102004020040200402004020040
80024200391550002452580010108000010800005064000000200202003920039999631001980010208000020800002003920039118002110910108000010010450243131682120036080000102004020040200402004020040
8002420039155003024525801081080000108000050640000002002020039200399996310019800102080000208000020039200391180021109101080000100000502401616181720036080000102004020040200402004020040
800242003916100024525800101080000108000050640000112002020039200399996310019800102080000208000020039200391180021109101080000100000502401216201920036080000102004020040200402004020040
8002420039155004828725800101080000108000050640000002002020039200399996310019800102080000208000020039200391180021109101080000100000502401416101920036080000102004020040200402004020040
800242003915600024525800101080000108000050640000112002020039200399996310019800102080000208000020039200391180021109101080000100000502401316161720036080000102004020040200402004020040
8002420039155000245258001010800001080000506400000120020200392003999963100198001020800002080000200392003911800211091010800001000005024017161919200361580000102004020040200402004020040
8002420039155001224551800101080000108000050640000012002020039200399996310019800102080000208000020039200391180021109101080000100000502401216181820036080000102004020040200402004020040
800242003915500024525800101080000108000050640000112002020039200399996310019800102080000208000020039200391180021109101080000100000502401416151220036080000102004020040200402004020040