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

FRINT64Z (vector, 2S)

Test 1: uops

Code:

  frint64z v0.2s, v0.2s
  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
100430372306125472510001000100039816003018303730372414328951000100010003037303711100110000073216222701100030383038303830383038
100430372496125472510001000100039816003018303730372414328951000100010003037303711100110000073216222629100030383038303830383038
100430372306125472510001000100039816003018303730372414328951000100010003037303711100110000073216222629100030383038303830383038
100430372306125472510001000100039816003018303730372414328951000100010003037303711100110000073216222629100030383038303830383038
100430372306125472510001000100039816003018303730372414328951000100010003037303711100110000073216222629100030383038307430383038
1004303723126125472510001000100039816003018303730372414328951000100010003037303711100110000073216222629100030383038303830383038
100430372406125472510001000100039816003018303730372414328951000100010003037303711100110000073216222629100030383038303830383038
100430372406125472510001000100039816003018303730372414328951000100010003037303711100110000073216222629100030383038303830383038
100430372406125472510001000100039816003018303730372414328951000100010003037303711100110000073216222629100030383038303830383038
100430372406125472510001000100039816003018303730372414328951000100010003037303711100110000073216222629100030383038303830383038

Test 2: Latency 1->2

Code:

  frint64z v0.2s, v0.2s
  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)18191e3f4e51schedule 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 tlb access (a0)l1d tlb miss (a1)ld unit uop (a6)l1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
102043003722500007262954725101001001000010010000500427716003001803003730037282643287451010020010000200100003003730037111020110099100100100001000000071021622296330100001003003830038300383003830038
10204300372250000612954725101001001000010010000500427716003001803003730037282643287451010020010000200100003003730037111020110099100100100001000000071021622296330100001003003830038300383003830038
10204300372250000612954725101001001000010010000625427716003001803003730037282643287451010020010000200100003003730037111020110099100100100001000000071021622296330100001003003830038300383003830038
10204300372250000612954725101001001000010010000500427716003001803003730037282643287451010020010000200100003003730037111020110099100100100001000000071021622296330100001003003830038300383003830038
10204300372240000612954725101001001000010010000500427716003001803003730037282643287451010020010000200100003003730037111020110099100100100001000000071021622296330100001003003830038300383003830038
10204300372250000612954725101001001000010010000500427716003001803003730037282643287451010020010000200100003003730037111020110099100100100001000000071021622296330100001003003830038300383003830038
102043003722500068342954725101001001000010010000500427716003001833003730037282643287451010020010000200100003003730037111020110099100100100001000000071021622296330100001003003830038300383003830038
10204300372330000612954725101001001000010010000500427716003001803003730037282643287451010020010000200100003003730037111020110099100100100001000000071021622296330100001003003830038300383003830038
10204300372250000612954725101001001000010010000500427716003001803003730037282643287451010020010000200100003003730037111020110099100100100001000000071021622296330100001003003830038300383003830038
10204300372240000612954725101001001000010010000500427716003001803003730037282643287451010020010000200100003003730037111020110099100100100001000000071021622296330100001003003830038300383003830038

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0037

retire uop (01)cycle (02)03mmu table walk data (08)181e3f4e51schedule 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)6061696b6d6emap 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)acc2cfd0d5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
100243003730100144612954725100101010000101000050427716010300180300373003728286328767100102010000201000030037300371110021109101010000100006400216222962910000103003830038300383003830038
10024300372330030612954725100101010000101000050427716000300180300373003728286328767100102010000201000030037300371110021109101010000101006400216222962910000103003830038300383003830038
10024300372330048612954725100101010000101000050427716010300180300373003728286328767100102010000201000030037300371110021109101010000100006400216222962910000103003830038300383003830038
1002430037233000612954725100101010000101000050427716000300183300373003728286328767100102010000201000030037300371110021109101010000100006400216222962910000103003830038300383003830038
10024300372320012612954725100101010000101000050427716010300180300373003728286328767100102010000201000030037300371110021109101010000100006400316222962910000103003830038300383003830038
1002430037233106612954725100101010000101000050427716015300180300373003728286328767100102010000201000030037300371110021109101010000100306400216222962910000103003830038300383003830038
1002430037232000612954725100101010000101000050427716000300180300373003728286328767100102010000201000030037300371110021109101010000100006400216222962910000103003830038300383003830038
1002430037233000612954725100101010000101000050427716000300180300373003728286328767100102010000201000030037300371110021109101010000101006400216222962910000103003830038300383003830038
1002430037232006612954725100101010000101000050427716000300180300373003728286328767100102010000201000030037300371110021109101010000100006400216222962910000103003830038300383003830038
1002430037233006612954725100101010000101000050427716005300180300373003728286328767100102010000201000030037300371110021109101010000100006405216222962910000103003830038300383003830038

Test 3: throughput

Count: 8

Code:

  frint64z v0.2s, v8.2s
  frint64z v1.2s, v8.2s
  frint64z v2.2s, v8.2s
  frint64z v3.2s, v8.2s
  frint64z v4.2s, v8.2s
  frint64z v5.2s, v8.2s
  frint64z v6.2s, v8.2s
  frint64z v7.2s, v8.2s
  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)181e1f3f51schedule 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)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 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
8020420039150000030258010810080008100800205006401320200200200392003999770699908012020080032200800322003920039118020110099100100800001000311151181161120036800001002004020040200402004020040
8020420039150000061125801081008000810080020500640132020020020039200399977069990801202008003220080032200392003911802011009910010080000100147011151351161120089800001002004020040200402009220040
8020420039155111688851258010810080008100800205006401320200200200392003999770699908012020080032200800322003920039118020110099100100800001000311151181161120036800001002004020040200402004020040
8020420039150000072258010810080008100800205006401320200200200392003999770699908012020080032200800322003920039118020110099100100800001000011151711161120036800001002004020040200402004020040
80204200391500000114258010810080008100800205006401320200200200392003999770699908012020080032200800322003920039118020110099100100800001000011151181161120036800001002004020040200402004020040
80204200391500000114258010810080008100800205006401320200200200392003999770699908012020080032200800322003920039118020110099100100800001000011151181161120036800001002004020040200402004020040
8020420039150000051258010810080008100800205006401320200200200392003999770699908012020080032200800322003920039118020110099100100800001000011151181161120036800001002004020040200402004020040
80204200391500000135258010810080008100800205006401320200200200392003999770699908012020080032200800322003920039118020110099100100800001000311151181161120036800001002004020040200402004020040
8020420039150000093258010810080008100800245006401320200200200392003999770699908012020080032200800322003920039118020110099100100800001001311151181161120036800001002004020040200402004020040
8020420039150000072258010810080008100800205006401320200200200392003999770699848012820080032200800322003920039118020110099100100800001000011151181161120036800001002004020040200402004020040

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)03l2 tlb miss data (0b)181e3f51schedule 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)accfd5map dispatch bubble (d6)dbddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
800242005115600040258001010800001080000506400001200202003920039999631001980010208000020800002003920039118002110910108000010001550203160112003680000102004020040200402004020040
80024200391560004025800101080000108000050640000120020200392003999963100198001020800002080000200392003911800211091010800001000050201160112003680000102004020040200402004020040
80024200391560004025800101080000108000050640000120020200392003999963100198001020800002080000200392003911800211091010800001000050201160222003680000102004020040200402004020040
80024200391550004025800101080000108000050640000120020200392003999963100198001020800002080000200392003911800211091010800001000050201160112003680000102004020040200402004020040
80024200391550004025800101080000108000050640000120020200392003999963100198001020800002080000200392003911800211091010800001000050201160112003680000102004020040200402004020040
80024200391550004025800101080000108000050640000020020200392003999963100198001020800002080000200392003911800211091010800001000050201160222003680000102004020040200402004020040
80024200391550004025800101080000108000050640000120020200392003999963100198001020800002080000200392003911800211091010800001000050202160112003680000102004020040200402004020040
80024200391560004025800101080000108000050640000020020200392003999963100198001020800002080000200392003911800211091010800001000050201160112003680000102004020040200402004020040
80024200391550004025800101080000108000050640000020020200392003999963100198012220800002080000200392003911800211091010800001000050201160222003680000102004020040200402004020040
800242003916000040258001010800001080000506400001200202003920039999631001980010208000020800002003920039118002110910108000010001250201160112003680000102004020040200402004020040