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

FRINTX (vector, 2D)

Test 1: uops

Code:

  frintx v0.2d, v0.2d
  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 tlb miss (a1)l1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
1004303723087254725100010001000398160130183037303724143289510001000100030373037111001100001073116112629100030383038303830383038
1004303723061254725100010001000398160130183037303724143289510001000100030373037111001100000073116112629100030383038303830383038
1004303723061254725100010001000398160130183037303724143289510001000100030373037111001100000073116112629100030383038303830383038
10043037220145254725100010001000398160130183037303724143289510001000100030373037111001100000073116112629100030383038303830383038
1004303723061254725100010001000398160130183037303724143289510001000100030373037111001100000073116112629100030383038303830383038
1004303723061254725100010001000398160130183037303724143289510001000100030373037111001100000373116112629100030383038303830383038
1004303722061254725100010001000398160130183037303724143289510001000100030373037111001100000073116112629100030383038303830383038
1004303723061254725100010001000398160130183037303724143289510001000100030373037111001100000073116112629100030383038303830383038
1004303723061254725100010001000398160130183037303724143289510001000100030373037111001100000373116112629100030383038303830383038
10043037232761254725100010001000398160130183037303724143289510001000100030373037111001100000073116112629100030383038303830383038

Test 2: Latency 1->2

Code:

  frintx v0.2d, v0.2d
  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)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 miss (a1)ld unit uop (a6)l1d cache writeback (a8)a9acc2branch cond mispred nonspec (c5)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
10204300372250000010329547251010010010000100100005004277160130018300373003728264328745101002001000020010000300373003711102011009910010010000100001000071011611296330100001003003830038300383003830038
102043003722500012072629547251010010010000100100005004277160130018300373003728264328745101002001000020010000300373008511102011009910010010000100001030071011611296330100001003003830038300383003830038
102043003722500012886129547251010010010000100100005004277160130018300373003728264328745101002001016420010000300373003711102011009910010010000100000030071011611296330100001003003830038300383003830038
102043003722500012010329547251010010010000100100005004277160030018300373003728264328745101002001000020010000300373003711102011009910010010000100001032171011611296330100001003003830038300383003830038
102043003722500024010329547251010010010000100100005004277160130090300373003728264328745101002001000020010000300373003711102011009910010010000100000030071011611296330100001003003830038300853003830038
10204300372250001206129547251010010010000100100005004277160130018300373003728264328745101002001000020010000300373003711102011009910010010000100001000071011611296330100001003003830038300383003830038
10204300372250001206129547251010010010000100100005004277160030018300373003728264328745101002001000020010000300373003711102011009910010010000100001000071011611296330100001003003830038300383003830038
102043003722400012010329547251010010010000100100005004277160130018300373003728264328745101002001000020010000300373003711102011009910010010000100000000071011611296330100001003003830038300383003830038
10204300372250003010329547251010010010000100100005004277160030018300373003728264328745101002001000020010000300373003711102011009910010010000100401030071011611296330100001003003830038300383003830038
102043003722500012029329547251010010010000100100005004277160030054300373003728264328745101002001000020010000300373003711102011009910010010000100000030071011611296330100001003003830038300383003830038

1000 unrolls and 10 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)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 cache writeback (a8)accfd0d5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
100243003722512103295472510010101000010100005042771601430018300373003728286328767100102010000201000030037300371110021109101010000100036404216222962910000103003830038300383003830038
100243003722512103295472510010101000010100005042771601430018300373003728286328767100102010000201000030037300371110021109101010000100136404216222962910000103003830038300383003830038
100243003722512103295472510010101000010100005042771601330018300373003728286328767100102010000201000030037300371110021109101010000100106403216222962910000103003830038300383003830038
100243003722512103295472510010101000010100005042771601230018300373003728286328767100102010000201000030085300371110021109101010000100066402216222962910000103003830038300383003830038
10024300372240103295472510010101000010100005042771601230018300373003728286328767100102010000201000030037300371110021109101010000100036402216222962910000103003830038300383003830038
100243003722412103295472510010101000010100005042771601230018300373003728286328767100102010000201000030037300371110021109101010000100136402216222962910000103003830038300383003830038
100243003722512103295472510010101000010100005042771601230018300373003728286328767100102010000201000030037300371110021109101010000100036402216222962910000103007930038300383003830038
100243003722512103295472510010101000010100005042771601230018300373003728286328767100102010000201000030037300371110021109101010000100136402216222962910000103003830038300383003830038
100243003722512103295472510010101000010100005042771601230018300373003728286328767100102010000201000030037300371110021109101010000100006402216222962910000103003830038300383003830038
10024300372251261295472510010101000010100005042771601230018300373003728286328767100102010000201000030037300371110021109101010000102136402216222962910000103003830038300383003830038

Test 3: throughput

Count: 8

Code:

  frintx v0.2d, v8.2d
  frintx v1.2d, v8.2d
  frintx v2.2d, v8.2d
  frintx v3.2d, v8.2d
  frintx v4.2d, v8.2d
  frintx v5.2d, v8.2d
  frintx v6.2d, v8.2d
  frintx v7.2d, v8.2d
  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)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)acc2branch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfmap dispatch bubble (d6)dde0? simd retires (ee)? int retires (ef)f5f6f7f8fd
80204200581500722580108100800081008002050064013212002020039200399977699908012020080032200800322003920039118020110099100100800001000000111511816020036800001002004020040200402004020040
802042003915012722580108100800081008002050064013212002020039200399977699908012020080032200800322003920039118020110099100100800001000100111511816020036800001002004020040200402004020040
80204200391500722580108100800081008002050064013212002020039200399977699908012020080032200800322003920039118020110099100100800001000000111511816020036800001002004020040200402004020040
802042003915004522580108100800081008002050064013212002020039200399977699908012020080032200800322003920039118020110099100100800001000100111511816020036800001002004020040200402004020040
802042003915012722580108100800081008002050064013212002020039200399977699908012020080032200800322003920039118020110099100100800001000100111511816020036800001002004020040200402004020040
80204200391500722580108100800081008002050064013212002020039200399977699908012020080032200800322003920039118020110099100100800001000100111511816020036800001002004020040200402004020040
80204200391500722580108100800081008002050064013202002020039200399977699908012020080032200800322003920039118020110099100100800001000130111511816020036800001002004020040200402004020040
802042003915012722580108100800081008002050064013212002020039200399977699908012020080032200800322003920039118020110099100100800001000130111511816020036800001002004020040200402004020040
802042003915003025801081008000810080020500640132120020200392003999776999080120200800322008003220039200391180201100991001008000010001180111511816020036800001002004020040200402004020040
802042003915012302580108100800081008002050064013212002020039200399977699908012020080032200800322003920039118020110099100100800001000000111511816020036800001002004020040200402004020040

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)191e3f51schedule 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)696d6emap 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)a9accfd2l1i cache miss demand (d3)d5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
80024200401501002763258001010800001080000506400002002020039200399996310019800102080000208000020039200391180021109101080000100000502000251619242003680000102004020040200402004020040
8002420039150000040258001010800001080000506400002002020039200399996310019800102080000208000020039200391180021109101080000100000502000271628282003680000102004020040200402004020040
80024200391500001240258001010800001080000506400002002020039200399996310019800102080000208000020039200391180021109101080000100000502000281628282003680000102004020040200402004020040
8002420039150000040258001010800001080000506400002002020039200399996310019800102080000208000020039200391180021109101080000100000502000281628282003680000102004020040200402004020040
8002420039150000040258001010800001080000506400002002020039200399996310019800102080000208000020039200391180021109101080000100000502000281628282003680000102004020040200402004020040
8002420039150000040258001010800001080000506400002005820039200399996310019800102080000208000020039200391180021109101080000100000502000141625152003680000102004020040200402004020040
8002420039150000040258001010800001080000506400002002020039200399996310019800102080000208000020039200391180021109101080000100000502000281628282003680000102004020040200402004020040
8002420039150000040258001010800001080000506400002002020039200399996310019800102080000208000020039200391180021109101080000100000502000151628152003680000102004020040200402004020040
8002420039150000040258001010800001080000506400002002020039200399996310019800102080000208000020039200391180021109101080000100000502000281615272003680000102004020040200402004020040
8002420039150000040258001010800001080000506400002002020039200399996310019800102080000208000020039200391180021109101080000100000502000141628142003680000102004020040200402004020040