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 (scalar, D)

Test 1: uops

Code:

  frinta d0, d0
  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
1004303724061254725100010001000398160030183037303724143289510001000100030373037111001100000073316232629100031323038303830383038
10043037250302254725100010001000398160030183037303724143289510001000100030373037111001100000073216222629100030383038303830383038
1004303723061254725100010001000398160030183037303724143289510001000100030373037111001100000073316222629100030383038303830383038
10043037231261254725100010001000398160030183037303724143289510001000100030373037111001100000073316332629100030383038303830383038
10043037230149254725100010001000398160030183037303724143289510001000100030373037111001100000073316332658100030383038303830383038
1004303724061254725100010001000398160030183037303724143289510001000100030373037111001100000073216332629100030383038303830383038
10043037230103254725100010001000398160030183037303724143289510001000100030373037111001100000073316332629100030383038303830383038
1004303724061254725100010001000398160030183037303724143289510001000100030373037111001100010073416332629100030383038303830383038
1004303723061254725100010001000398160030183037303724143289510001000100030373037111001100000073216332629100030383038303830383038
1004303724069254725100010001000398160030183037303724143289510001000100030373037111001100010073316332629100030383038303830383038

Test 2: Latency 1->2

Code:

  frinta d0, d0
  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)03mmu table walk data (08)09l2 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)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)a9acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
102043003723310000000612954725101001001000010010000500427716013001830037300372826432874510100200100002001000030037300371110201100991001001000010000000071011611296330100001003003830038300383003830038
102043003723300000000642954725101251251000012510000626427716003001830037300372826432874510100200100002001000030037300371110201100991001001000010000003075811611296330100001003003830038300383003830038
1020430037233000001200892954725101251001000010010000500427716003001830037300372826432874510100200100002001000030037300371110201100991001001000010000000071021713296330100001003003830038300383003830038
10204300372320000000018929547101101001251000010010000500427716013001830037300372826432874510100200100002001000030037300371110201100991001001000010000000071011611296330100001003003830038300383003830038
102043003723300000000612954725101001001000010010000500427716003001830037300372826432874510729200100002001000030037300371110201100991001001000010000000071011611296330100001003003830038300383003830038
102043003723200000001612954725101001001000010010000500427716013001830037300372826432874510100200100002001000030037300371110201100991001001000010000000071011611296330100001003003830038300383003830038
1020430037233010000001032954725101001001000010010000500427716003001830037300372826432874510100200100002001000030037300371110201100991001001000010000003071411621296330100001003003830038300383003830038
1020430037233000000001102954725101001251000012510000626427716013001830037300372826432874410125200100002001000030037300371110201100991001001000010000000071011611296330100001003003830038300383003830038
102043003723300022288192026132952862101251221002413210300587427986403001830037300372826432874510100200100002001000030037300371110201100991001001000010000000071011611296330100001003003830038300383003830038
102043003723200000000612954725101001251000010010150500427716003001830037300372826432874510100200100002001000030037300371110201100991001001000010000000071011611296330100001003003830038300383003830038

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0037

retire uop (01)cycle (02)03mmu table walk data (08)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)91inst branch cond (94)inst int alu (97)inst simd alu (9a)9fl1d tlb miss (a1)l1d cache writeback (a8)acbranch mispred nonspec (cb)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
100243003722500612954725100171010000101000050427716003001803003730037282863287671001020100002010000300373003711100211090101010000100000640216222962910000103003830038300383003830038
10024300372250511032954725100101010000101000050427716013001803003730037282863287671001020100002010000300373003711100211090101010000100100640216222962910000103003830038300383003830038
1002430037225003072954725100101010000101000050427716003001803003730037282863287671001020100002010000300373003711100211090101010000100100640224222966710000103003830038300383003830086
1002430037225012612954725100101010000101000071427716003001803003730037282863287861001020100002010000300373003711100211090101010000102100640216222962910000103003830038300383003830038
1002430037225001032954725100101010000121015050427716003001803003730084282863287671001020100002010000300373003711100211090101010000100000640216222962910000103003830038300383003830038
10024300372250121032954725100101010000101000050427716003001803003730037282863287671001020100002010000300373003711100211090101010000100000640216222962910000103003830038300383003830038
10024300372250121032954725100101010000101000050427716003001803003730037282863287671001020100002010000300373003711100211090101010000100000640216222962910000103003830038300383003830038
100243003722400612954725100101010000101000055427716003001803003730037282863287671001020100002010000300373003711100211090101010000100000640239522962910000103003830038300383003830038
100243003722500612954725100101010000101000050427716003001803003730037282863287671001020100002010000300373003711100211090101010000100000640216222962910000103003830038300383003830038
100243003722500612954725100101010000101000050427716003001803003730037282863287671001020100002010000300373003711100211090101010000100000640216222962910000103003830038300383003830038

Test 3: throughput

Count: 8

Code:

  frinta d0, d8
  frinta d1, d8
  frinta d2, d8
  frinta d3, d8
  frinta d4, d8
  frinta d5, d8
  frinta d6, d8
  frinta d7, d8
  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)l2 tlb miss instruction (0a)0e181e3f51schedule 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)9fld unit uop (a6)l1d cache writeback (a8)acc2branch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
80204200491561100030258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100000011151181161120036800001002004020040200402004020040
8020420039155110042630258010810080008100800205006401321200202003920039997769990801202008003220080032200392003911802011009910010080000100000011151181161120036800001002004020040200402004020040
802042003915511000309258010810080008100800205006401320200202003920039997769990801202028003220080032200392003911802011009910010080000100000011151181161120036800001002004020040200402004020040
80204200391551100030258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100010011151181161120036800001002004020040200402004020040
80204200391551100030258010810080008100800205006401321200202003920039997769990801202008003220080032200392003911802011009910010080000100000011151181161120036800001002004020040200402004020040
80204200391551100072258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100000011151181161120036800001002004020040200402004020040
80204200391551100030258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100000011151181161120036800001002004020040200402004020040
802042003915611002130258010810080008100800205006401321200202003920039997769990801202008003220080032200392003911802011009910010080000100010011151181161120036800001002004020040200402004020040
80204200391551100030258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100000011151181161120036800001002004020040200402004020040
80204200391561100630258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100000011151181161120036800001002004020040200402004020040

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)031e1f3f51schedule 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)ld unit uop (a6)l1d cache writeback (a8)aaaccdcfl1i cache miss demand (d3)d5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
800242005015527040258001010800001080000506400000020020200392003999963100198001020800002080000200392003911800211091010800001000000050200916752003680000102004020040200402004020040
800242003915560040258001010800001080000506400000020020200392003999963100198001020800002080000200392003911800211091010800001000900050200616562003680000102004020040200402004020040
8002420039155297040258001010800001080000506400000020020200392003999963100198001020800002080000200392003911800211091010800001000000050200616462003680000102004020040200402004020040
8002420039155507040258001010800001080000506400000020020200392003999963100198001020800002080000200392003911800211091010800001000003050200416782003680000102004020040200402004020040
800242003915548040258001010800001080000506400000020020200392003999963100198001020800002080000200392003911800211091010800001000000050200716752003680000102004020040200402004020040
80024200391600040258001010800001080000506400000020020200392003999963100198001020800002080000200392003911800211091010800001000132580050200716752003680000102004020040200402004020040
800242003915612040258001010800001080000506400000020020200392003999963100198001020800002080000200392003911800211091010800001000003050200416852003680000102004020040200402004020040
800242003915557040258001010800001080000506400000020020200392003999963100198001020800002080000200392003911800211091010800001000000050200616642003680000102004020040200402004020040
800242003915654040258001010800001080000506400000020020200392003999963100198001020800002080000200392003911800211091010800001000000050200616752003680000102004020040200402004020040
800242003915651040258001010800001080000506400000020020200392003999963100198001020800002080000200392003911800211091010800001000000050200716772003680000102004020040200402004020040