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 (vector, 2S)

Test 1: uops

Code:

  frint64x 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)60696b6d6emap 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)l1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
100430372308225472510001000100039816003018030373037241432895100010001000303730371110011000000073216112629100030383038303830383038
100430372306125472510001000100039816003018030373037241432895100010001000303730371110011000000373116112629100030383038303830383038
1004303723126125472510001000100039816003018030373037241432895100010001000303730371110011000000073116112629100030383038303830383038
100430372406125472510001000100039816003018030373037241432895100010001000303730371110011000000073116112629100030383038303830383038
1004303724012425472510001000100039816003018030373037241432895100010001000303730371110011000000073116112629100030383038303830383038
100430372306125472510001000100039816013018030373037241432895100010001000303730371110011000000073116112629100030383038303830383038
100430372406125472510001000100039816013018030373037241432895100010001000303730371110011000000073116112629100030383038303830383038
100430372406125472510001000100039816013018030373037241432895100010001000303730371110011000000073116112629100030383038303830383038
1004303724022925472510001000100039816003018030373037241432895100010001000303730371110011000000073116112629100030383038303830383038
100430372308425472510001000100039816013018030373037241432895100010001000303730371110011000000073116112629100030383038303830383038

Test 2: Latency 1->2

Code:

  frint64x 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)0318191e3f4e51schedule 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)accfd5map dispatch bubble (d6)daddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
1020430037233000274295472510100100100001001000050042771601300183003730037282643287451010020010000200100003003730037111020110099100100100001000071011601129633100001003003830038300383003830038
1020430037233000705295472510100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020110099100100100001000071011601129633100001003003830038300383003830038
1020430037233000279295472510100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020110099100100100001000071011601129633100001003003830038300383003830038
102043003723300061295472510100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020110099100100100001000071011601129633100001003003830038300383003830038
1020430037232110726295472510100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020110099100100100001000071011601129633100001003003830038300383003830038
102043003723300061295472510100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020110099100100100001000071011601129633100001003003830038300383003830038
102043003723300061295472510100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020110099100100100001000071011651129633100001003003830038300383003830038
102043003724300061295472510100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020110099100100100001000071011601129633100001003003830038300383003830038
1020430037233000103295472510100100100001001000050042771601300183003730037282643287451010020010000200100003003730037111020110099100100100001000071011601129633100001003003830038300383003830038
102043003723200061295472510100100100001001000050042771601300183003730037282643287451010020010000200100003003730037111020110099100100100001000071011601129633100001003003830038300383003830038

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0037

retire uop (01)cycle (02)03181e1f3f4e51schedule 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 cache writeback (a8)acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
10024300372320006129547251001010100001010000504277160130018030037300372828632876710010201000020100003003730037111002110910101000010000640416222962910000103003830038300383003830038
10024300372250006129547251001010100001010000504277160130018030037300372828632876710010201000020100003003730037111002110910101000010000640216222962910000103003830038300383003830038
10024300372240006129547251001010100001010000504277160030018030037300372828632876710010201000020100003003730037111002110910101000010000640216222966710000103003830038300383003830038
10024300372250006129547251001010100001010000504277160130018030037300372828632876710010201000020100003003730037111002110910101000010000640216222962910000103003830038300383003830038
10024300372250906129547251001010100001010000504277160030018030037300372828632876710010201000020100003003730037111002210910101000010000640216222962910000103003830038300383003830038
10024300372250006129547251001010100001010000504277160130018030037300372828632878810010201000020100003003730037111002110910101000010000640216222962910000103003830038300383003830038
10024300372250906129547251001010100001010000504277160030018030037300372828632876710010201000020100003003730037111002110910101000010000640216222962910000103003830038300383003830038
10024300372250006129547251001010100001010000504277160030018030037300372828632876710010201000020100003003730037111002110910101000010000640216222962910000103003830038300383003830038
10024300372250006129547251001010100001010000504277160130018030037300372828632876710010201000020100003003730037111002110910101000010000640216222962910000103003830038300383003830038
10024300372250006129547251001010100001010000504277160030018030037300372828632876710010201000020100003003730037111002110910101000010000640216222962910000103003830038300383003830038

Test 3: throughput

Count: 8

Code:

  frint64x v0.2s, v8.2s
  frint64x v1.2s, v8.2s
  frint64x v2.2s, v8.2s
  frint64x v3.2s, v8.2s
  frint64x v4.2s, v8.2s
  frint64x v5.2s, v8.2s
  frint64x v6.2s, v8.2s
  frint64x 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)03l2 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)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)ld unit uop (a6)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)ea? simd retires (ee)? int retires (ef)f5f6f7f8fd
8020420049155000302580108100800081008002050064013202002020039200399977699908012020080032200800322003920039118020110099100100800001000041201115118216002003600800001002004020040200402004020040
802042011315600030258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100000001115204077002003600800001002004020040200402004020040
802042003915500030258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100005601115118016002003600800001002004020040200402004020040
8020420039155000302580108100800081008002050064013202002020039200399977699908012020080032200800322003920039118020110099100100800001000029001115118016002003600800001002004020040200402004020040
8020420039156000302580108100800081008002050064013202002020039200399977699908012020080032200800322003920039118020110099100100800001000030001115118016002003600800001002004020040200402004020040
802042003915500030258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100004301115118016002003600800001002004020040200402004020040
8020420039155000302580108100800081008002050064013202002020039200399977699908012020080136200800322003920039118020110099100100800001000038001115118016002003600800001002004020040200402004020040
802042003915500030258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100000001115118016002003600800001002004020040200402004020040
8020420039161000582580108100800081008002050064013202002020039200399977699908012020080032200800322003920039118020110099100100800001000021201115118016102003600800001002004020040200402004020040
802042003915600030258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100000001115118016002003600800001002004020040200402004020040

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 instruction (0a)18191e1f3f51schedule 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)5d5f60696d6emap 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)a9acc2c9cfd0d5map dispatch bubble (d6)dadbddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
80024200501560000004025800101080000108000050640000000200202003920039999631001980010208000020800002003920039118002110910108000010000000005020612160011132003680000102004020040200402004020040
800242003915500000045525800101080000108000050640000000200202003920039999631001980010208000020800002003920039118002110910108000010000000005020010160011112003680000102004020040200402004020040
80024200391550000004025800101080000108000050640000000200202003920039999631001980010208000020800002003920039118002110910108000010000000005020012160012112003680000102004020040200402004020040
80024200391550000004025800101080000108000050640000000200202003920039999631001980010208000020800002003920039118002110910108000010000000005020011160011132003680000102004020040200402004020040
800242003915500000040258001010800001080000506400000002002020039200399996310019800102080000208000020039200391180021109101080000100000018005020013160013112003680000102004020040200402004020177
80024200391560000004025800101080000108000050640000000200202003920039999631001980010208000020800002003920039118002110910108000010020100005020012160010132003680000102004020040200402004020040
800242003915500000040258001010800001080000506400000002002020039200399996310019800102080000208000020039200391180021109101080000100000012005020012160011112003680000102004020040200402004020040
800242003915500000040258001010800001080000506400000002002020039200399996310019800102080000208000020039200391180021109101080000100000027005020013160013132008480000102004020040200402004020040
80024200391550000004025800101080000108000050640000000200202003920039999631001980010208000020800002003920039118002110910108000010000000005020012160012112003680000102004020040200402004020040
800242003915600000040258001010800001080000506400000002002020039200399996310019800102080000208000020039200391180021109101080000100000027005020011160013112003680000102004020040200402004020040