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

FRINTI (vector, 2S)

Test 1: uops

Code:

  frinti 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)03mmu table walk data (08)191e3f4e51schedule 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
10043037251006125472510001000100039816003018303730372414328951000100010003037303711100110000073416222629100030383038303830383038
100430372300126125472510001000100039816003018303730372414328951000100010003037303711100110000073216222629100030383038303830383038
10043037230106125472510001000100039816003018303730372414328951000100010003037303711100110000073216222629100030383038303830383038
10043037230006125472510001000100039816003018303730372414328951000100010003037303711100110000073216222629100030383038303830383038
10043037240006125472510001000100039816003018303730372414328951000100010003037303711100110000073216222629100030383038303830383038
10043037230006125472510001000100039816003018303730372414328951000100010003037303711100110000073216222629100030383038303830383038
10043037240006125472510001000100039816003018303730372414328951000100010003037303711100110000073216222629100030383038303830383038
100430372300061254725100010001000398160030183037303724143289510001000100030373037111001100012173216222629100030383038303830383038
1004303724000103254725100010001000398160030183037303724143289510001000100030373037111001100012073216222629100030383038303830383038
10043037240006125472510001000100039816003018303730372414328951000100010003037303711100110000073216222629100030383038303830383038

Test 2: Latency 1->2

Code:

  frinti 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 instruction (07)mmu table walk data (08)l2 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)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 tlb miss (a1)ld unit uop (a6)l1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
1020430037232000000006129547251010010010000100100005004277160300183003730037282643287451010020010000200100003003730037111020110099100100100001000000071011611296330100001003003830038300383003830038
10204300372320000000010329547251010010010000100100005004277160300183003730037282643287451010020010000200100003003730037111020110099100100100001000000071011611296330100001003003830038300383003830038
10204300372320000000010329547251010010010000100100005004277160300183003730037282643287451010020010000200100003003730037111020110099100100100001000000371011611296330100001003003830038300383003830038
1020430037232000000006129547251010010010000100100005004277160300183003730037282643287451010020010000200100003003730037111020110099100100100001000000071011611296330100001003003830038300383003830038
1020430037233000000006129547251010010010000100100005004277160300183003730037282643287451010020010000200100003003730037111020110099100100100001000000071011611296330100001003003830038300383003830038
1020430037233000000008229547251010010010000100100005004277160300183003730037282643287451010020010000200100003003730037111020110099100100100001000001071011611296330100001003003830038300383003830038
1020430037232000000006129547251010010010000100100005004277160300183003730037282643287451010020010000200100003003730037111020110099100100100001000000071011611296330100001003003830038300383003830038
1020430037233000000006129547251010010010000100100005004277160300183003730037282643287451010020010000200100003003730037111020110099100100100001000000071011611296330100001003003830038300383003830038
1020430037233000000006129547251010010010000100100005004277160300183003730037282643287451010020010000200100003003730037111020110099100100100001000000071011611296330100001003003830038300383003830038
1020430037233000000006129547251010010010000100100005004277160300183003730037282643287451010020010000200100003003730037111020110099100100100001000000071011611296330100001003003830038300383003830038

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0037

retire uop (01)cycle (02)03mmu table walk data (08)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
100243003722500000061295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000000006402162229629010000103003830038300383003830038
1002430037225000000726295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000000006402162229629010000103003830038300383003830038
100243003722500000061295472510010101000810100005042771600300183003730037282863287671001020100002010000300373003711100211091010100001000000006402162229629010000103003830038300383003830038
100243003722500000061295472510010101000010100005042771600300183003730037282863287671001020100002010000300373003711100211091010100001000000006402162229629010000103003830038300383003830038
100243003722500000061295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000000006402162229629010000103003830038300383003830038
100243003722500000061295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000000006402162229629010000103003830038300383003830038
1002430037225000000107295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000000006402162229629010000103003830038300383003830038
100243003722500000061295472510010101000010100005042771600300183003730037282863287671001020100002010000300373003711100211091010100001000000006402162229629010000103003830038300383003830038
100243003722500000061295472510034101000010100005042771600300183003730037282863287671001020100002010000300373003711100211091010100001000000006402162229629010000103003830038300383003830038
100243003722500000061295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000000006402162229629010000103003830038300383003830038

Test 3: throughput

Count: 8

Code:

  frinti v0.2s, v8.2s
  frinti v1.2s, v8.2s
  frinti v2.2s, v8.2s
  frinti v3.2s, v8.2s
  frinti v4.2s, v8.2s
  frinti v5.2s, v8.2s
  frinti v6.2s, v8.2s
  frinti 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)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)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 cache writeback (a8)acbranch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfmap dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
8020420039156213025801081008000810080020500640132200202003920039997769990801202008003220080032200392003911802011009910010080000100101115118160020036800001002004020040200402004020040
802042003915503025801081008000810080020500640132200202003920039997769990801202008003220080032200392003911802011009910010080000100031115118160020036800001002004020040200402004020040
802042003915503025801081008000810080020500640132200202003920039997769990801202008003220080032200392003911802011009910010080000100001115118160020036800001002004020040200402004020040
802042003915603025801081008000810080020500640132200202003920039997769990801202008003220080032200392014911802011009910010080000100031115118160020036800001002004020040200402004020040
802042003915603025801081008000810080020500640132200202003920039997769990801202008003220080032200392003911802011009910010080000100001115118160120036800001002004020040200402004020040
802042003915503025801081008000810080020500640132200202003920039997769990801202008003220080032200392003911802011009910010080000100001115118160020036800001002004020040200402004020040
802042003915503025801081008000810080020500640132200202003920039997769990801202008003220080032200392003911802011009910010080000100001115118160020036800001002004020040200402004020040
802042003915503025801081008000810080020500640132200202003920039997769990801202008003220080032200392003911802011009910010080000100001115118160020036800001002004020040200402004020040
802042003915503025801081008000810080020500640132200202003920039997769990802272008003820080038200482004811802011009910010080000100061115118160020036800001002004020040200402004020040
8020420039156123025801081008000810080020500640132200202003920039997769990801202008003220080032200392003911802011009910010080000100001115118160020036800001002004020040200402004020040

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)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)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 tlb miss (a1)ld unit uop (a6)l1d cache writeback (a8)acc2branch cond mispred nonspec (c5)cfd0d2l1i cache miss demand (d3)d5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
800242003915500004025800101080000108000050640000152002020039200399996310019800102080000208000020039200391180021109101080000100000300502050618161662003680000102004020040200402004020040
80024200391560000402580010108000010800005064000015200202003920039999631001980010208000020800002003920039118002110910108000010000000050205016161662003680000102004020040200402004020040
800242003915500004025800101080000108000050640000152002020039200399996310019800102080000208000020039200391180021109101080000100000000502050116166162003680000102004020040200402004020040
800242003915500004025800101080000108000050640000152002020039200399996310019800102080000208000020039200391180021109101080000100000000502050116166162003680000102004020040200402004020040
800242003915500004025800101080000108000050640000152002020039200399996310019800102080000208000020039200391180021109101080000100000300502050111166162003680000102004020040200402004020040
800242003915500004025800101080000108000050640000152002020039200399996310019800102080000208000020039200391180021109101080000100000000502050212161662003680000102004020040200402004020040
800242003915600004025800101080000108000050640000102002020039200399996310019800102080000208000020039200391180021109101080000100000000502050113166162003680000102004020040200402004020040
80024200391550000402580010108000010800005064000015200202003920039999631001980010208000020800002003920039118002110910108000010000000050205015161662003680000102004020040200402004020040
8002420039155001040258001010800001080000506400001520020200392003999963100198001020800002080000200392003911800211091010800001000000005020500161616162003680000102004020040200402004020040
8002420039155000040258001010800001080000506400001520020200392003999963100198001020800002080000200392003911800211091010800001000000005020500161616162003680000102004020040200402004020040