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

FRINT32X (vector, 2D)

Test 1: uops

Code:

  frint32x 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)03mmu table walk instruction (07)1e1f3f4e51schedule 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 cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
1004303723012061254725100010001000398160130183037303724143289510001000100030373037111001100000373216332629100030383038308530383038
100430372400061254725100010001000398160130183037303724143289510001000100030373037111001100020373316222629100030383038303830383038
1004303723000103254725100010001000398160130183037303724143289510001000100030373037111001100000073316322629100030383038303830383038
100430372400061254725100010001000398160130183037303724143289510001000100030373037111001100000373316222629100030383038303830383038
100430372400061254725100010001000398160130183037303724143289510001000100030373037111001100000073316332629100030383038308530383038
100430372400061254725100010001000398160130183037303724143289510001000100030373037111001100000073316332629100030383038303830383038
1004303723000210253825100010001000398160130183037303724136289510001000100030373037111001100000075416332629100030383038303830383038
100430372300061254725100010001000398160030183037303724143291410001000100030373037111001100000073316222629100030383038303830383038
100430372400061254725100010001000398160130183037303724143289510001000100030373037111001100000073316332629100030383038303830383038
100430372300061254725100010001000398160130183037303724143289510001000100030373037111001100000075316332629100030383038303830383038

Test 2: Latency 1->2

Code:

  frint32x 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)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)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 cache writeback (a8)a9acbranch cond mispred nonspec (c5)cfd5map dispatch bubble (d6)ddfetch restart (de)e0ec? simd retires (ee)? int retires (ef)f5f6f7f8fd
10204300372320797295472510100100100001001000050042771600030018300373003728264328745101002001000020010000300373003711102011009910010010000100000071011611296330100001003003830038300383003830038
1020430037233082295472510100100100001001000050042771600030018300373003728264328745101002001000020010000300373003711102011009910010010000100000071011610296330100001003003830038300383003830038
1020430037232061295472510100100100001001000050042771600130018300373003728264328745101002001000020010000300373003711102011009910010010000100003071011611296330100001003003830038300383003830038
10204300372330726295472510100100100001001000050042771600030018300373003728264328745101002001000020010000300373003711102011009910010010000100000071011611296331100001003003830038300383003830038
1020430037233061295472510100100100001001000050042771600030018300373003728264328745101002001000020010000300373003711102011009910010010000100000071011611296330100001003003830038300383003830038
1020430037232061295472510100100100001001000050042771600030018300373003728264328745101002001000020010000300373003711102011009910010010000100000071011611296330100001003003830038300383003830038
1020430037233061295472510100100100001001000050042771600030018300373003728264328745101002001000020010000300373003711102011009910010010000100000071011611296330100001003003830038300383003830038
1020430037233061295472510100100100001001000050042771600130018300373003728264328745101002001000020010000300373003711102011009910010010000100000071011611296330100001003003830038300383003830038
10204300372330726295474410121100100001001000050042771600030018300373003728264328745101002001000020010000300373003711102011009910010010000100000071011611296330100001003003830038300383003830038
1020430037233061295472510100100100001001000050042771600130018300373003728264328745101002001000020010000300373003711102011009910010010000100010071011611296330100001003003830038300383003830038

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0037

retire uop (01)cycle (02)03mmu table walk data (08)09l2 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
1002430037233000000061295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000000006402162229629010000103003830038300383003830038
1002430037225000000061295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000000006402166229629010000103003830038300383003830038
1002430037225000000061295472510010101000010100005042771600300183003730037282863287671001020100002010000300373003711100211091010100001000000006402162229629010000103003830038300383003830038
1002430037225000000061295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000000006403162229629010000103003830038300383003830038
1002430037225000000061295472510010101000010100005042771600300183003730037282863287671001020100002010000300373003711100211091010100001000000006403162229629010000103003830038300383003830038
1002430037225000000061295472510010101000010100005042771600300183003730037282863287671001020100002010000300373003711100211091010100001000000006403162229629010000103003830038300383003830038
100243003722500000001106295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000000006403162229629010000103003830038300383003830038
1002430037225000000061295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000000006403162229629010000103003830038300383003830038
1002430037225000000061295472510010101000010100005042771600300183003730037282863287671001020100002010000300373003711100211091010100001000000006482162229629010000103003830038300383003830038
1002430037225000000061295472510010101000010100005042771600300183003730037282863287671001020100002010000300373003711100211091010100001000000006402162229629010000103003830038300383003830038

Test 3: throughput

Count: 8

Code:

  frint32x v0.2d, v8.2d
  frint32x v1.2d, v8.2d
  frint32x v2.2d, v8.2d
  frint32x v3.2d, v8.2d
  frint32x v4.2d, v8.2d
  frint32x v5.2d, v8.2d
  frint32x v6.2d, v8.2d
  frint32x 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)9fld unit uop (a6)l1d cache writeback (a8)acbranch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfd5map dispatch bubble (d6)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
802042005815536302580108100800081008002050064013202002020039200399977699908012020080032200800322003920039118020110099100100800001000001115118016200360800001002004020040200402004020040
802042003915527682580108100800081008002050064013212002020039200399977699908012020080032200800322003920039118020110099100100800001000001115118016200360800001002004020040200402004020040
802042003915542302580108100800081148002050064013202002020039200399977699908012020080032200800322003920039118020110099100100800001000001115118016200360800001002004020040200402004020040
80204200391600302580108100800081008002050064013202002020039200399977699908012020080032200800322003920039118020110099100100800001000001115118016200360800001002004020040200402004020040
802042003915612302580108100800081008002050064013202002020039200399977699908012020080032200800322003920039118020110099100100800001000001115118016200360800001002004020040200402004020040
80204200391550302580108100800081008002050064013202002020039200399977699908012020080032200800322003920039118020110099100100800001000001115118016200360800001002004020040200402004020040
802042003915518302580108100800081008002050064013202002020039200399977699908012020080032200800322003920039118020110099100100800001000001115118016200360800001002004020040200402004020040
802042003915527302580108100800081008011650064013202002020039200399977699908012020080032200800322003920039118020110099100100800001000001115118016200360800001002004020040200402004020040
80204200391560302580108100800081008002050064013212002020039200399977699908012020080032200800322003920039118020110099100100800001000001115118016200360800001002004020040200402004020040
8020420039155121252580108100800081008002050064013212002020039200399977699908012020080032200800322003920039118020110099100100800001000001115118016200360800001002004020040200402004020040

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)031e1f3f51schedule 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)accdcfl1i cache miss demand (d3)d5map dispatch bubble (d6)d9ddfetch restart (de)e0ea? simd retires (ee)? int retires (ef)f5f6f7f8fd
800242005015512061258001010800001080000506400000020020200392003999963100198001020800002080000200392003911800211091010800001000005020012160121020036080000102004020040200402004020040
80024200391550040258001010800001080000506400000020020200392003999963100198001020800002080000200392003911800211091010800001000305020011160141520036080000102004020040200402004020040
80024200391550040258001010800001080000506400000020020200392003999963100198001020800002080000200392003911800211091010800001000005020012160141620036080000102004020040200402004020040
80024200391550040258001010800001080000506400000020069200392003999968100198001020800002080000200392003911800211091010800001000005020015390111520036080000102004020040200402004020040
80024200391551204025800101080000108000050640000002002020039200399996310019800102080000208000020039200391180021109101080000100000502001416091120036080000102004020040200402004020040
80024200391553015225800101080000108000050640000002002020039200399996310019800102080000208000020039200391180021109101080000100000502001416011920036080000102004020040200402004020040
80024200391550040258001010800001080000506400000020020200392003999963100198001020800002080000200392003911800211091010800001000005020012160131120036080000102004020040200402004020040
800242003915527388272258001010800001080000506400000020020200392003999963100198001020800002080000200392003911800211091010800001000015020015160161420036080000102004020040200402004020040
80024200391560040258001010800001080000506400000020020200392003999963100198001020800002080000200392003911800211091010800001000005020014160121220036080000102004020040200402004020040
80024200391550082258001010800971080000506400000020020200392003999963100198001020800002080000200392003911800211091010800001000005020013160181420036080000102004020040200402004020040