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

FRINTZ (scalar, S)

Test 1: uops

Code:

  frintz 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)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)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
1004303723010325472510001000100039816003018303730372414328951000100010003037303711100110000373216222629100030383038303830383038
1004303723010325472510001000100039816003018303730372414328951000100010003037303711100110001373216222629100030383038303830383038
1004303723126125474310001000100039816013018303730372414328951000100010003037303711100110000073216222629100030383038303830383038
100430372306125472510001000100039816003018303730372414328951000100010003037303711100110000073216222629100030383038303830383038
100430372306125472510001000100039816013018303730372414328951000100010003037303711100110001073216222629100030383038303830383038
1004303723126125472510001000100039816003018303730372414328951000100010003037303711100110000373216222629100030383038303830383038
100430372206125472510001000100039816003018303730372414328951000100010003037303711100110000373216222629100030383038303830383038
100430372206125472510001000100039816013018303730372414328951000100010003037303711100110000073216222629100030383038303830383038
100430372306125472510001000100039816003018303730372414328951000100010003037303711100110001073216222629100030383038303830383038
100430372206125472510001000100039816003018303730372414328951000100010003037303711100110001073216222629100030383038303830383038

Test 2: Latency 1->2

Code:

  frintz 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)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)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
1020430037225010329547251010010010000100100005004277160130018300373003728264328745101002001000020010000300373003711102011009910010010000100137102162229633100001003003830038300383003830038
10204300372251210329547251010010010000100100005004277160130018300373003728264328745101002001000020010000300373008011102011009910010010000100107102162229633100001003003830038300383003830038
10204300372251210329547251010010010000100100005004277160130018300373003728264328745101002001000020010000300373003711102011009910010010000100037102162229633100001003003830038300383003830038
10204300372251210329547251010010010000100100005004277160130018300373003728264328745101002001000020010000300373003711102011009910010010000100037102162229633100001003003830038300383003830038
1020430037225010329547251010010010000100100005004277160130018300373003728264328745101002141000020010000300373003711102011009910010010000100137102162229633100001003003830038300383003830038
1020430037225010329547251010010010000100100005004277160130018300373003728264328745101002001000020010000300373003711102011009910010010000100137102162229633100001003003830038300383003830038
10204300372251210329547251010010010000100100005004277160130018300373003728264328745101002001000020010000300373003711102011009910010010000100137102162229633100001003003830038300383003830038
1020430037225074729529251010010010000100100005004277160130018300373003728264328745101002001000020010000300373003711102011009910010010000100137102162229633100001003003830038300383003830038
1020430037225010329547251010010010000100100005004277160130018300373003728264328745101002001000020010000300373003711102011009910010010000100137102162229633100001003003830038300383003830038
10204300372251210329547251010010010000100100005004277160130018300373003728264328745101002001000020010000300373003711102011009910010010000100137102162229633100001003003830038300383003830038

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0037

retire uop (01)cycle (02)0309l2 tlb miss instruction (0a)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)l1d cache writeback (a8)a9accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
10024300372250000000870295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000000640216222962910000103003830038300383003830038
10024300372250000000726295472510010101000010100005042771601300183003730037282863287671016020100002010000300373003711100211091010100001000000640216222962910000103003830038300383003830038
10024300372250000018061295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000000640216222962910000103003830038300383003830038
10024300372250000000538295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000000640216222977310000103003830038300383003830038
1002430037225000400061295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000000640216222962910000103003830038300383003830038
1002430037225000000061295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000000640216232962910000103003830038300383003830038
1002430037225000000061295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000000640216222962910000103003830038300383003830038
1002430037225000000061295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001004000640216222962910000103003830038300383003830038
10024300372250000000170295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000000640216222962910000103003830038300383003830038
1002430037225000000061295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001020000640216222962910000103003830038300383003830038

Test 3: throughput

Count: 8

Code:

  frintz s0, s8
  frintz s1, s8
  frintz s2, s8
  frintz s3, s8
  frintz s4, s8
  frintz s5, s8
  frintz s6, s8
  frintz 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)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)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)branch mispred nonspec (cb)cdcfmap dispatch bubble (d6)dde0? simd retires (ee)? int retires (ef)f5f6f7f8fd
802042006115000012072258010810080008100800205006401321200202003920039997769990801202008003220080032200392003911802011009910010080000100001030111511816020036800001002004020040200402004020040
8020420039150000120156258010810080008100800205006401321200202003920039997769990801202008003220080032200392003911802011009910010080000100001030111511816020036800001002004020040200402004020040
802042003915000012030258010810080008100800205006401321200202003920039997769990801202008003220080032200392003911802011009910010080000100000000111511816020036800001002004020040200912004020040
80204200391500000030258010810080008100800205006401321200202003920039997769990801202008003220080032200392003911802011009910010080000100001030111511816020036800001002004020040200402004020040
802042003915000012072258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100001000111511816020036800001002004020040200402004020040
802042003915000012072258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100001030111511816020036800001002004020040200402004020040
802042003915100012072258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100000030111511816020036800001002004020040200402004020040
802042003915000012093258010810080008100800205006401321200202003920039997769990801202008003220080032200392003911802011009910010080000100001000111511816020036800001002004020040200402004020040
802042003915000012072258010810080008100800205006401321200202003920039997769990801202008003220080032200392003911802011009910010080000100001030111511816020036800001002004020040200402004020040
802042003915000012072258010810080008100800205006401321200202003920039997769990801202008003220080032200392003911802011009910010080000100001030111511816020036800001002004020040200402004020040

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)031e3a3f51schedule 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 miss (a1)l1d cache writeback (a8)branch cond mispred nonspec (c5)cfd0d2l1i tlb miss demand (d4)d5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
8002420039150034125800101080000108000050640000052002020039200399996310019800102080000208000020039200391180021109101080000102005024001141616162003680000102004020040200402004020040
8002420039150024125800101080000108000050640000152002020039200399996310019800102080000208000020039200391180021109101080000100005024500141617152003680000102004020040200402004020040
8002420039150024125800101080000108000050640000152002020039200399996310019800102080000208000020039200391180021109101080000100005024500131614162003680000102004020040200402004020040
8002420039150024125800101080000108000050640000152002020039200399996310019800102080000208000020039200391180021109101080000100005024500151616162003680000102004020040200402004020040
800242003915002412580010108000010800005064000015200202003920039999631001980010208000020800002003920039118002110910108000010000502450081616142003680000102004020040200402004020040
8002420039150026002580010108000010800005064000015200202003920039999631001980010208000020800002003920039118002110910108000010000502450014169152003680000102004020040200402004020040
8002420039150024125800101080000108000050640000052002020039200399996310019800102080000208000020039200391180021109101080000100005024000151615162003680000102004020040200402004020040
800242003915002412580010108000010800005064000005200202003920039999631001980010208000020800002003920039118002110910108000010000502450020161682003680000102004020040200402004020040
8002420039150024125800101080000108000050640000102002020039200399996310019800102080000208000020039200391180021109101080000100005024000171614162003680000102004020040200402004020040
80024200391500242125800101080000108000050640000102002020039200399996310019800102080000208000020039200391180021109101080000100005024500181615162003680000102004020040200402004020040