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

FRINTZ (vector, 4H)

Test 1: uops

Code:

  frintz v0.4h, v0.4h
  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
100430372306125472510001000100039816013018303730372414328951000100010003037303711100110000373116112629100030383038303830383038
100430372296125472510001000100039816013018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
100430372306125472510001000100039816013018303730372414328951000100010003037303711100110000373116112629100030383038303830383038
100430372206125472510001000100039816013018303730372414328951000100010003037303711100110005073116112629100030383038303830383038
100430372206125472510001000100039816013018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
100430372312103254725100010001000398160130183037303724143289510001000100030373037111001100004273116112629100030383038303830383038
1004303722129125472510001000100039816013018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
100430372366125472510001000100039816013018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
100430372366125472510001000100039816013018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
100430372206125472510001000100039816013018303730372414328951000100010003037303711100110000073116112629100030383038303830383038

Test 2: Latency 1->2

Code:

  frintz v0.4h, v0.4h
  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)031e3f4e51schedule 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)a9accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
1020430037225121032954725101001001000010010000500427716013001830037300372826432874510100200100002001000030037300371110201100991001001000010010457101161129633100001003003830038300383003830038
1020430037224010329547251010010010000100100005004277160130018300373003728264328745101002001000020010000300373003711102011009910010010000100501807101161129633100001003003830038300383003830038
102043003722512880295472510100100100001001000050042771601300183003730037282643287451010020010000200100003003730037111020110099100100100001001097101161129633100001003003830038300383003830038
102043003722512103295472510100100100001001000050042771601300183003730037282643287451010020010000200100003003730037111020110099100100100001008027837101161129633100001003003830038300383003830038
102043003722512612954725101001001000010010000500427716013001830037300372826432874510100200100002001000030037300371110201100991001001000010028067101161129633100001003003830038300383003830038
1020430037225010329547251010010010000100100005004277160130018300373003728264328745101002001000020010000300373003711102011009910010010000100540157101161129633100001003003830038300383003830038
10204300372250103295472510100100100001001000050042771601300183003730037282643287451010020010000200100003003730037111020110099100100100001004007101161129633100001003003830038300383003830038
102043003722512612954725101001001000010010000500427716013001830037300372826432874510100200100002001000030037300371110201100991001001000010034067101161129633100001003003830038300383003830038
1020430037225127682954725101001001000010010000500427716013001830037300372826432874510100200100002001000030037300371110201100991001001000010032084617101161129633100001003008530038300383003830038
102043003722412103295472510100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020110099100100100001002097101161129633100001003003830038300383003830038

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0037

retire uop (01)cycle (02)030918191e1f3f4e51schedule 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)a9acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
100243003722500000612954725100101010000101000050427716003001830037300372828632876710010201000020100003003730037111002110910101000010000002406402162229629010000103003830038300383003830038
100243003722500000612954725100101010000101000050427716003001830037300372828632876710010201000020100003003730037111002110910101000010000008406402162229629010000103003830038300383003830038
100243003722500000612954725100101010000101000050427716003001830037300372828632876710010201000020100003003730037111002110910101000010000008706402162229629010000103003830038300383003830038
100243003722500000612954725100101010000101000050427716003001830037300372828632876710010201000020100003003730037111002110910101000010000003006402162229629010000103003830038300383003830038
100243003722500000612954725100101010000101000050427716003001830037300372828632876710010201000020100003003730037111002110910101000010000002406402162229629010000103003830038300383003830038
100243003722500000612954725100101010000101000050427716003001830037300372828632876710010201000020100003003730037111002110910101000010000101206402162229629010000103003830038300383003830038
100243003722500000612954725100101010000101000050427716003001830037300372828632876710010201000020100003003730037111002110910101000010000003306402162229629010000103003830038300383003830038
100243003722500000612954725100101010000101000050427716003001830037300372828632876710010201000020100003003730037111002110910101000010000005706402162229629010000103003830038300383003830038
100243003722500000612954725100101010000101000050427716003001830037300372828632876710010201000020100003003730037111002110910101000010000004506402162229629010000103003830038300383003830038
10024300372240000061295472510010101000010100005042771600300183003730037282863287671001020100002010000300373003711100211091010100001000000906402162229629010000103003830038300383003830038

Test 3: throughput

Count: 8

Code:

  frintz v0.4h, v8.4h
  frintz v1.4h, v8.4h
  frintz v2.4h, v8.4h
  frintz v3.4h, v8.4h
  frintz v4.4h, v8.4h
  frintz v5.4h, v8.4h
  frintz v6.4h, v8.4h
  frintz v7.4h, v8.4h
  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)031e3f51schedule 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 cache writeback (a8)acc2branch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfd5map dispatch bubble (d6)fetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
802042003915012348258010810080008100800205006401320200200200392003999776999080120200800322008003220039200391180201100991001008000010000301115118216020036800001002004020040200402004020040
80204200391501272258010810080008100800205006401320200200200392003999776999080120200800322008003220039200391180201100991001008000010000301115118016020036800001002004020040200402004020040
80204200391501272258010810080008100800205006401320200203200392003999776999080120200800322008003220039200391180201100991001008000010001301115118016020036800001002004020040200402004020040
8020420039150072258010810080008100800205006401320200200200392003999776999080120200800322008003220039200391180201100991001008000010001301115118116020036800001002004020040200402004020040
8020420039150072258010810080008100800205006401320200200200392003999776999080120200800322008003220039200391180201100991001008000010000301115118016020036800001002004020040200402004020040
80204200391501272258010810080008100800205006401320200200200392003999776999080120200800322008003220039200391180201100991001008000010001301115118116020036800001002004020040200922004020154
80204200391501272258010810080008100800205006401320200200200392003999776999080120200800322008003220039200391180201100991001008000010001301115118016020036800001002004020040200402004020040
80204200391501272258010810080008100800205006401320200200200392003999776999080120200800322008003220039200391180201100991001008000010001301115118016020036800001002004020040200402004020040
80204200391501272258010810080008100800205006401320200200200392003999776999080120200800322008003220039200391180201100991001008000010000301115118116020036800001002004020040200402004020040
80204200391501272258010810080008100800205006401320200200200392003999776999080120200800322008003220039200391180201100991001008000010000001115118016020036800001002004020040200402004020040

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)031e3f51schedule 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 access (a0)l1d cache writeback (a8)a9accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
80024200511500402580010108000010800005064000001200202003920039999631001980010208000020800002003920039118002110910108000010000050201016542003680000102004020040200402004020040
80024200391500705258001010800001080000506400000120020200392003999963100198001020800002080000200392003911800211091010800001000005020816572003680000102004020040200402004020040
8002420039150040258001010800001080000506400000120020200392003999963100198001020800002080000200392003911800211091010800001000005020916772003680000102004020040200402004020040
80024200391500402580010108000010800005064000000200202003920039999631001980010208000020800002003920039118002110910108000010000050201016542003680000102004020040200402004020040
8002420039150040258001010800001080000506400000120020200392003999963100198001020800002080000200392003911800211091010800001000005020716552003680000102004020040200402004020040
8002420039150040518001010800001080000506400000120020200392003999963100198001020800002080000200392003911800211091010800001000005020516562003680000102004020040200402004020040
8002420039150040258001010800001080000506400000020020200392003999963100198001020800002080000200392003911800211091010800001000005020916752003680000102004020040200402004020040
8002420039150061258001010800001080000506400000120020200392003999963100198001020800002080000200392003911800211091010800001000005020816542003680000102004020040200402004020040
8002420039150040258001010800001080000506400000020020200392003999963100198001020800002080000200392003911800211091010800001000005020316662003680000102004020040200402004020040
8002420039150040258001010800001080000506400000120020200392003999963100198001020800002080000200392003911800211091010800001000005020716552003680000102004020040200402004020040