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, 2S)

Test 1: uops

Code:

  frintx v0.2s, v0.2s
  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)a9accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
10043037220103254725100010001000398160030183037303724143289510001000100030373037111001100000073216222629100030383038303830383038
1004303723061254725100010001000398160130183037303724143289510001000100030373037111001100000073216222629100030383038303830383038
10043037231261254725100010001000398160030183037303724143289510001000100030373037111001100000073216222629100030383038303830383038
1004303723061254725100010001000398160130183037303724143289510001000100030373037111001100000073216222629100030383038303830383038
10043037221261254725100010001000398160130183037303724143289510001000100030373037111001100000073216222629100030383038303830383038
1004303723961254725100010001000398160130183037303724143289510001000100030373037111001100000073216222629100030383038303830383038
10043037230156254725100010001000398160030183037303724143289510001000100030373037111001100011073216222629100030383038303830383038
1004303723061254725100010001000398160030183037303724143289510001000100030373037111001100000373216222629100030383038303830383038
10043037230103254725100010001000398160130183037303724143289510001000100030373037111001100050073216222629100030383038303830383038
1004303723061254725100010001000398160130183037303724143289510001000100030373037111001100000073216222629100030383038303830383038

Test 2: Latency 1->2

Code:

  frintx v0.2s, v0.2s
  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 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)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
10204300372250000000055929547251010010010000100100005004277160130018300373003728264328745101002001000020010000300373003711102011009910010010000100000000071011611296330100001003003830038300383003830038
1020430037225000000006129547251010010010000100100005004277160130018300373003728264328745101002001000020010000300373003711102011009910010010000100000000071011611296330100001003003830038300383003830038
1020430037225000000006129547251010010010000100100005004277160130018300373003728264328745101002001000020010000300373003711102011009910010010000100000000071011611296330100001003003830038300383003830038
1020430037225000000006129547251010010010000100100005004277160130018300373003728264328745101002001000020010000300373003711102011009910010010000100000000071011611296330100001003003830038300383003830038
1020430037225000000006129547251010010010000100100005004277160130018300373003728264328745101002001000020010000300373003711102011009910010010000100000000071011611296330100001003007430038300383003830038
1020430037225000000006129547251010010010000100100005004277160130018300373003728264328745101002001000020010000300373003711102011009910010010000100000000071011611296330100001003003830038300383003830038
10204300372250000000012429547251010010010000100100005004277160130018300373003728264328745101002001000020010000300373003711102011009910010010000100000000071011611296330100001003003830038300383003830038
1020430037224000000006129547251010010010000100100005004277160130018300373003728264328745101002001000020010000300373003711102011009910010010000100000000071011611296330100001003003830038300383003830038
1020430037225000000006129547251010010310000100100005004277160130018300373003728264328745101002001000020010000300373003711102011009910010010000100000000071011611296330100001003003830038300383003830038
1020430037225000000006129547251010010010000100100005004277160130018300373003728264328745101002001000020010000300373003711102011009910010010000100000000071011611296330100001003003830038300383003830038

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)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)acbranch cond mispred nonspec (c5)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
1002430037225128692954725100101010000101000050427716003001830037300372828632876710010201000020100003003730037111002110910101000010100640316342962910000103003830038300383003830038
1002430037225121892954725100101010000101000050427716003001830037300372828632876710010201000020100003003730037111002110910101000010130640416432962910000103003830038300383003830038
100243003722501032954725100101010000101000050427716003001830037300372828632876710010201000020100003003730037111002110910101000010130640416432962910000103003830038300383003830038
1002430037225121032954725100101010000101000050427716003001830037300372828632876710010201000020100003003730037111002110910101000010100640216332962910000103003830038300383003830038
100243003722512612954725100101010000101000050427716003001830037300372828632876710010201000020100003003730037111002110910101000010000640416342962910000103003830038300383003830038
1002430080224121032954725100101010000101000050427716003001830037300372828632876710010201000020100003003730037111002110910101000010000640416442962910000103003830038300383003830038
100243003722512732954725100101010000101000050427716003001830037300372828632876710010201000020100003003730037111002110910101000010100640316342962910000103003830038300383003830038
1002430037225121032954725100101010000101000050427716003001830037300372828632876710010201000020100003003730037111002110910101000010030640416342962910000103003830038300383003830038
1002430037225127682954725100101010000101000050427716003001830037300372828632876710010201000020100003003730037111002110910101000010130640416342962910000103003830038300383003830038
1002430037225181032954725100101010000101000050427716003001830037300372828632876710010201000020100003003730037111002110910101000010130640416442962910000103003830038300383003830038

Test 3: throughput

Count: 8

Code:

  frintx v0.2s, v8.2s
  frintx v1.2s, v8.2s
  frintx v2.2s, v8.2s
  frintx v3.2s, v8.2s
  frintx v4.2s, v8.2s
  frintx v5.2s, v8.2s
  frintx v6.2s, v8.2s
  frintx v7.2s, v8.2s
  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)1e1f3f51schedule 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)l1d cache writeback (a8)acc2branch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
802042005815003810302580108100800081008002050064013212002020039200399977699908012020080032200800322003920039118020110099100100800001000000111511811600200360800001002004020040200402004020040
80204200391500120302580108100800081008002050064013212002020039200399977699908012020080032200800322003920039118020110099100100800001000000111511801600200360800001002004020040200402004020040
8020420039150000302580108100800081008002050064013202006120039200399977699908012020080032200800322003920039118020110099100100800001000000111511801600200360800001002019920040200402004020040
802042003915004350302580108100800081008002050064262402002020039200399977699908012020080032200800322003920039118020110099100100800001000000111511801600200360800001002004020040200402004020040
802042003915005310302580108100800081008002050064013202002020039200399977699908012020080032200800322003920039118020110099100100800001000100111511801600200360800001002004020040200402004020040
802042003915004050302580108100800081008002050064013202002020039200399977699908012020080032200800322003920039118020110099100100800001000000111511801600200360800001002004020040200402004020040
802042003915002580302580108100800081008002050064013202002020039200399977699908012020080032200800322003920039118020110099100100800001000000111511801600200360800001002004020200200402004020040
802042003915009264302580108100800081008002050064013212017820039200399977699908012020080032200800322003920039118020110099100100800001000000111511801600200360800001002004020040200402004020040
802042003915003210302580108100800081008002050064013212002020039200399977699908012020080032200800322003920039118020110099100100800001000000111511801600200360800001002004020040200402004020040
802042003915003630302580108100800081008002050064013212002020039200399977699908012020080032200800322003920039118020110099100100800001000000111511801620200360800001002004020040200402004020040

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)03mmu table walk data (08)l2 tlb miss data (0b)18191e1f3a3f51schedule 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)5f6061696d6emap 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)a9accfd0d2d5map dispatch bubble (d6)daddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
800242003915000001200402580010108000010800005064000001020020200392003999963100198042520800002080000200392003911800211091010800001000103502000141604112007480000102004020040200402004020040
8002420039150000066004025800101080000108000050640000000200202003920039999631001980010208000020800002003920039118002110910108000010000035020007162672003680000102004020040200402004020040
800242003915000002880082258001010800001080000506400000152002020039200399996310019800102080000208000020039200391180021109101080000100010350205061604132003680000102004020040200402004020040
80024200391500000249002302580010108000010800005064000000020020200392003999963100198001020800002080000200392003911800211091010800001000103502000101601152003680000102004020040200402004020040
800242003915000002850082258001010800001080000506400000052002020039200399996310019800102080000208000020039200391180021109101080000100000050205041605122003680000102004020040200402004020040
8002420039150000027900822580010108000010800005064000001520020200392003999963100198001020800002080000200392003911800211091010800001000103502054416012102003680000102004020040200402004020040
80024200391500000150082258001010800001080000506400000002002020039200399996310019800102080000208000020039200391180021109101080000100010350205011160952003680000102004020040200402004020040
80024200391500000234008225800101080000108000050640000015200202003920039999631001980010208000020800002003920039118002110910108000010000035020005160692003680000102004020040200402004020040
800242003915000002460061258001010800001080000506400000002002020039200399996310019800102080000208000020039200391180021109101080000100010350205010160552003680000102004020040200402004020040
80024200391500000255008225800101080000108000050640000015200202003920039999631001980010208000020800002003920039118002110910108000010000035020005160452003680000102004020040200402004020040