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 (scalar, S)

Test 1: uops

Code:

  frint64z s0, s0
  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)03l2 tlb miss data (0b)1e3f4e51schedule 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
1004303723006125472510001000100039816013018303730372414328951000100010003037303711100110000373116112629100030383038303830383038
10043037230126125472510001000100039816013018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
1004303724006125472510001000100039816003018303730372414328951000100010003037303711100110000373116112629100030383038303830383038
100430372400103254725100010001000398160030183037303724143289510001000100030373037111001100002173116112629100030383038303830383038
10043037230061254725100010001000398160030183037303724143289510001000100030373037111001100001873116112629100030383038303830383038
1004303723006125472510001000100039816003018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
1004303723036125472510001000100039816013018303730372414328951000100010003037303711100110004073116112629100030383038303830383038
1004303723006125472510001000100039816013018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
10043037230061254725100010001000398160130183037303724143289510001000100030373037111001100002173116112629100030383038303830383038
10043037240061254725100010001000398160030183037303724143289510001000100030373037111001100001873116112629100030383038303830383038

Test 2: Latency 1->2

Code:

  frint64z s0, s0
  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)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 miss (a1)ld unit uop (a6)l1d cache writeback (a8)a9acc2cfd0d5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
102043003723300021061295472510100100100001001000050042771601300180300373003728264328745101002041000021410000300373003711102011009910010010000100000000710011611296330100001003003830038300383003830038
10204300372330000061295472510100100100001001000050042771600300180300373003728264328745101002001000020010000300373003711102011009910010010000100000000710011611296330100001003003830038300383003830038
10204300372330000061295472510100100100001001000050042771600300180300373003728264328745101002001000020010000300373003711102011009910010010000100000000710011611296330100001003003830038300383003830038
102043003723300000124295472510100100100001001000050042771600300180300373003728264328745101002001000020010000300373003711102011009910010010000100000000710011611296330100001003003830038300383003830038
10204300372330000089295472510100100100001001000050042771600300180300373003728264328745101002001000020010000300373003711102011009910010010000100000000710011611296330100001003003830038300383003830038
102043003723200000166295472510100100100001001000050042771600300180300373003728264328745101002001000020010000300373003711102011009910010010000100000000710011611296330100001003003830038300383003830038
10204300372320000061295472510100100100001001000050042771601300180300373003728264328745101002001000020010000300373003711102011009910010010000100000000710011611296330100001003003830038300383003830038
10204300372320000061295472510100100100001001000050042771600300180300373003728264328745101002001000020010000300373003711102011009910010010000100001000710011611296330100001003003830038300383003830038
102043003724300000103295472510100100100001001000050042771600300180300373003728264328745101002001000020010000300373003711102011009910010010000100000000710011611296330100001003003830038300383003830038
10204300372330000061295472510100100100001001000050042771601300180300373003728264328745101002001000020010000300373003711102011009910010010000100000090710011611296330100001003003830038300383003830038

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0037

retire uop (01)cycle (02)03mmu table walk data (08)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)st unit uop (a7)l1d cache writeback (a8)a9accdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
10024300372330000061295472510010101000010100005042771600300183003730037282863287671001020100002010000300373003711100211091010100001000000006403162229629010000103003830038300383003830038
10024300372320000061295472510010101000010100005042771600300183003730037282863287671001020100002010000300373003711100211091010100001000000006402162229629010000103003830038300383003830038
10024300372330000061295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000000006402162229629010000103003830038300383003830038
1002430037233000001120295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000000006402162229629010000103003830038300383003830038
1002430037233000001053295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001002000006402162229629010000103003830038300383003830038
100243003723300000923295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000000006402162229629010000103003830038300383003830038
1002430037233000002320295472510010101000010100005042771600300183003730037282863287671001020100002010000300373003711100211091010100001000000006402162229629010000103003830038300383003830038
1002430037233000001202295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000000006402162229629010000103003830038300383003830038
100243003724100000277295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000000006402162229629010000103003830038300383003830038
1002430037233000301059295472510010101000010100005042771600300183003730037282863287671001020100002010000300373003711100211091010100001020000006402162229629010000103003830038300383003830038

Test 3: throughput

Count: 8

Code:

  frint64z s0, s8
  frint64z s1, s8
  frint64z s2, s8
  frint64z s3, s8
  frint64z s4, s8
  frint64z s5, s8
  frint64z s6, s8
  frint64z s7, s8
  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)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 cache writeback (a8)a9acbranch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
80204200391560000074258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100000011151180160020036800001002004020040200402004020040
802042003915500200695258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100000011151180160020036800001002004020040200402004020040
80204200391640000030258010810080008100801285006401320200202017220197998769990801202008003220080038200392003911802011009910010080000100000311151180160020036800001002004020040200402004020040
80204200391560000030258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100000011151180160020036800001002004020040200402004020040
80204200391550000058258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100000011151180160020036800001002004020040200402004020040
8020420039155000026430258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100000011151180160020036800001002004020040200402004020040
80204200391550000030258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100000011151181160020036800001002004020040200402004020040
80204200391550000030258010810080008100800205006401321200202003920039997769990801202008003220080032200392003911802011009910010080000100000011151180160020155800001002004020040200402004020040
802042003915500012030258010810080008100800205006401321200202003920039997769990801202008003220080032200392003911802011009910010080000100010011151180160020036800001002004020040200402004020040
80204200391550000072258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100000011151180160020036800001002004020040200402004020040

1000 unrolls and 10 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)l2 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)6061696d6emap 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)acc2branch cond mispred nonspec (c5)cfd0d2d5map dispatch bubble (d6)d9ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
80024200391550000000402580010108000010800005064000015200202003920039999631001980010208000020800002003920039118002110910108000010000000005020501168112003680000102004020040200402004020040
800242003915500000001242580010108000010800005064000015200202003920039999631004780319208000020800002003920039118002110910108000010000000005020501168112003680000102004020040200402004020040
80024200391550000000402580010108000010800005064000015200202003920039999631001980010208000020800002003920039118002110910108000010000000005020501166112003680000102004020040200402004020040
80024200391550000000402580010108000010800005064000015200202003920039999631001980010208000020800002003920039118002110910108000010000000005020501166112003680000102004020040200402004020040
80024200391550000000402580010108000010800005064000015200202003920039999631001980010208000020800002003920039118002110910108000010000000005020501166112003680000102004020040200402004020040
80024200391550000000402580010108000010800005064000015200202003920039999631001980010208000020800002003920039118002110910108000010000000015020501168112003680000102009020040200402004020040
80024200391550000000402580010108000010800005064000015200202003920039999631004680122208000020800002003920039118002110910108000010000000005020501166112003680000102004020040200402004020040
800242003915600000120402580010108000010800005064000015200202003920039999631001980010208000020800002003920039118002110910108000010000000005020501168112003680000102004020040200402004020040
80024200391550000000402580010108000010800005064000015200202003920039999631001980010208000020800002003920039118002110910108000010000000005020501166112011680000102004020040200402004020040
8002420039155000000011372580010108000010800005064000015200202003920039999631001980010208000020800002003920039118002110910108000010000006005020511168112003680000102004020040200402004020040