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

FRINT64X (scalar, S)

Test 1: uops

Code:

  frint64x 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 tlb access (a0)l1d tlb miss (a1)ld unit uop (a6)a9accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
10043037220072425472510001000100039816013018303730372414729071000100010003037303711100110000000373116112629100030383038308630383038
1004303723006125472510001000100039816013018303730372414328951000100010003037303711100110000000073116112629100030383038303830383038
1004303723006125472510001000100039816003018303730372414328951000100010003037303711100110000000073116112629100030383038303830383038
1004303722006125472510001000100039816003018303730372414328951000100010003037303711100110000000073116112629100030383038303830383038
1004303723006125472510001000100039816003018303730372414328951000100010003037303711100110000000073116112629100030383038303830383038
1004303722006125472510001000100039816003018303730372414328951000100010003037303711100110000000073116112629100030383038303830383038
1004303722006125472510001000100039816003018303730372414328951000100010003037303711100110000000073116112629100030383038303830383038
1004303723006125472510001000100039816003018303730372414328951000100010003037303711100110001000373116112629100030383038303830383038
1004303722006125472510001000100039816003018303730372414328951000100010003037303711100110000000073116112629100030383038303830383038
1004303723006125472510001000100039816003018303730372414328951000100010003037303711100110000000073116112629100030383038303830383038

Test 2: Latency 1->2

Code:

  frint64x 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)03mmu table walk data (08)09l2 tlb miss instruction (0a)l2 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)inst ldst (9b)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
102043003722500000000061295472510100100100001001000050042771601300183003730037282643287451010020010000200100003003730037111020110099100100100000100000000071011611296330100001003003830038300383003830038
102043003722500000000061295472510100100100001001000050042775541300183003730037282643287451010020010000200100003003730037111020110099100100100000100000100071011611296330100001003003830038300383003830038
102043003722500000000061295472510100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020110099100100100000100000000071011611296330100001003003830038300383003830038
102043003722500000000061295472510100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020110099100100100000100000000071011611296330100001003003830038300383003830038
102043003722400000000061295472510100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020110099100100100000100000000071011611296330100001003003830038300383003830038
102043003722500000000061295472510100100100001001000050042771601300183003730037282643287451010020010000200100003003730037111020110099100100100000100000000071011611296330100001003003830038300383003830038
1020430037225000000000103295472510100100100001001000050042771601300183003730037282643287451010020010000200100003003730037111020110099100100100000100000000071011611296330100001003003830038300383003830038
102043003722500000000061295472510100100100001001000050042771601300183003730037282643287451010020010000200100003003730037111020110099100100100000100000000071011611296330100001003003830038300383003830038
102043003722500000000061295472510100100100001001000050042771601300183003730037282643287451010020010000200100003003730037111020110099100100100000100000000071011611296330100001003003830038300383003830038
102043003722500000000061295472510100100100001001000050042771601300183003730037282643287451010020010000200100003003730037111020110099100100100000100000000071011611296330100001003003830038300383003830038

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)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
1002430037233000021061295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000000006406163329629010000103003830038300383003830038
10024300372330000273062295472510010101000010100005042771601300183003730037282883287671001020100002010000301313008441100211091010100001000000006403163329629010000103003830038300383003830038
10024300372320000195061295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000000006403163329629010000103003830038300383003830038
100243003723300000061295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000000006403163329629010000103003830038300383003830038
10024300372330000390061295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000000006403163329629010000103003830038300383003830038
10024300372320000330103295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000200006403163329629010000103003830038300383003830038
100243003723300300061295472510010101000010100006042771600300183003730037282863288431001020100002010000301793017841100211091010100001000210843306403163329629010000103003830038300383017930178
10024302722341123004265295292510010101000012100006642812161301983003730037283013287671001022100002010000300373013211100211091010100001000000007033403429736210000103003830038300383007430038
1002430037232000018002108295474310010101000017106006042771601300183003730180282863287671046220100002010331300373003711100211091010100001000000016403164529776310000103008630038300383008530086
100243003723310000026822954780100101010000141015065427716013001830037300372828632876710913221131922100003013130037111002110910101000010202102782008484975429989410000103055630511305073055930514

Test 3: throughput

Count: 8

Code:

  frint64x s0, s8
  frint64x s1, s8
  frint64x s2, s8
  frint64x s3, s8
  frint64x s4, s8
  frint64x s5, s8
  frint64x s6, s8
  frint64x 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)0918191e3f51schedule 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)5e60696d6emap 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)acldst x64 uop (b1)branch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfd0d5map dispatch bubble (d6)ddfetch restart (de)e0ea? simd retires (ee)? int retires (ef)f5f6f7f8fd
80204200581550000061258010810080008100800205006401320120020200392003999776999080120200800322008003220039200391180201100991001008000010000301115118011600200360800001002004020040200402004020040
802042003915500000302580108100800081008002050064013201200202003920039997769990801202008003220080032200392003911802011009910010080000100008401115118001600200361800001002004020040200402004020040
8020420039155000003025801081008000810080020500640132002002020039200399977699908012020080032200800322003920039118020110099100100800001000010201115118001600200360800001002004020040200402004020040
802042003915500000302580108100800081008002050064013200200202003920039997769990801202008003220080032200392003911802011009910010080000100007801115118001600200360800001002004020040200402004020040
8020420039155000003025801081008000810080020500640132002002020039200399977699908012020080032200800322003920039118020110099100100800001000022501115118001600200360800001002004020040200402004020040
80204200391550000030258010810080008100800205006401320020020200392003999776999080120200800322008003220039200391180201100991001008000010000301115118001600200360800001002004020040200402004020040
80204200391550000072258010810480406100800205006425760020020200902014199776999080120200800322008003220039200391180201100991001008000010000901115118001600200360800001002004020040200402004020040
80204200391560000030258010810080008100800205006401320020020200392003999776999080120200800322008003220039200391180201100991001008000010000301115118001600200360800001002004020040200402004020040
80204200391550000030258010810080008100800205006401320020020200392003999776999080120200800322008003220039200391180201100991001008000010000301115118001600200360800001002004020040200902004020040
80204200391550000030258010810080008100800205006401320020020200392003999776999080120200800322008003220039200391180201100991001008000010000301115118001600200360800001002004020040200402004020040

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)03l1i tlb fill (04)l2 tlb miss instruction (0a)l2 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)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)9fld unit uop (a6)l1d cache writeback (a8)a9accfd2d5map dispatch bubble (d6)d9ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
80024200501550000061258001010800001080000506400000120020200392003999963100198001020800002080000200392003911800211091010800001000005020410160372003680000102004020040200402004020040
8002420039156000004025800101080000108000050640000002002020039200399996310019800102080000208000020039200391180021109101080000100100502007160442003680000102004020040200402004020040
80024200391550000040258001010800001080000506400000020020200392003999963100198001020800002080000200392003911800211091010800001000005020410160732003680000102004020040200402004020040
8002420039155000004025800101080000108000050640000002002020039200399996310019800102080000208000020039200391180021109101080000100000502003160372003680000102004020040200402004020040
800242003915500000610120803041080000108000050640000002002020039200399996310019800102080000208000020039200391180021109101080000100000502003160332003680000102004020040200402004020040
8002420039155000004025800101080000108000050640000012002020039200399996310019800102080000208000020039200391180021109101080000100000502003160332003680000102004020040200402004020040
8002420039155000004025800101080000108000050640000002002020039200399996310029800102080000208000020039200391180021109101080000100000502007160732003680000102004020040200402004020040
8002420039155000004025800101080000108000050640000002002020039200399996310019800102080000208000020039200391180021109101080000100000502003160332003680000102004020040200402004020040
8002420039155000004025800101080000108000050640000002002020039200399996310019800102080000208000020039200391180021109101080000100000502003160472003680000102004020040200402004020040
8002420039155001004025800101080000108000050640000002002020039200399996310019800102080000208000020039200391180021109101080000100000502003160332003680000102004020040200402004020040