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

CMLE (zero, 16B)

Test 1: uops

Code:

  cmle v0.16b, v0.16b, #0
  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
100420371606116862510001000100026452112018203720371571318951000100010002037203711100110002073116111786100020382038203820382038
100420371606116862510001000100026452112018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
10042037151326116862510001000100026452112018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
100420371506116862510001000100026452112018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
100420371506116862510001000100026452102018203720371571318951000100010002037208411100110000073116111786100020382038203820382038
100420371506116862510001000100026452112018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
100420371606116862510001000100026452112018203720371571318951000100010002037203711100110000373116111786100020382038203820382038
100420371508216862510001000100026452112018203720371571318951000100010002037203711100110001073116111786100020382038203820382038
1004203715156116862510001000100026452112018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
100420371506116862510001000100026452112018203720371571318951000100010002037203711100110000073116111786100020382038203820382038

Test 2: Latency 1->2

Code:

  cmle v0.16b, v0.16b, #0
  movi v0.16b, 1
  movi v1.16b, 2

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code): 2.0037

retire uop (01)cycle (02)03mmu table walk data (08)0918193f4e51schedule 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)a9acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
10204200371500000611968625101001001000010010000500284752102001820037200371842131874510100200100002001000020037200371110201100991001001000010030307101161119791100001002003820038200382003820038
10204200371500000611968625101001001000010010000500284752102001820037200371842131874510100200100002001000020037200371110201100991001001000010010007101161119791100001002003820038200382003820038
10204200371500000611968625101001001000010010000500284752102001820037200371842131874510100200100002001000020037200371110201100991001001000010020007101161119791100001002003820038200382003820038
10204200371500000611968625101001001000010010000500284752102001820037200371842131874510100200100002001000020037200371110201100991001001000010000907101161119791100001002003820038200382003820038
10204200371500000611968625101001001000010010000500284752102001820037200371842131874510100200100002001000020037200371110201100991001001000010000007101161119791100001002003820038200382003820038
102042003715000006119686251010010010000100100005002847521020018200372003718421318745101002001000020010000200372003711102011009910010010000100003007101161119791100001002003820038200382003820038
10204200371490000611968625101001001000010010000500284752112001820037200371842131874510100200100002001000020037200371110201100991001001000010000007101161119791100001002003820038200382003820038
10204200371500000611968625101001001000010010000500284752102001820037200371842131874510100200100002001000020037200371110201100991001001000010000007101161119791100001002003820038200382003820038
10204200371500000611968625101001001000010010000500284752102001820037200371842131874510100200100002001000020037200371110201100991001001000010000007101161119791100001002003820038200382003820038
10204200371500000611968625101001001000010010000500284752102001820037200371842131874510100200100002001000020037200371110201100991001001000010000007101161119791100001002003820038200382003820038

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0037

retire uop (01)cycle (02)03mmu table walk data (08)181e3a3f4e51schedule 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)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
100242003715000022521968625100101010000101000050284752120018200372003718443318767100102010000201000020037200371110021109101010000100364410165101978610000102003820038200382003820038
10024200371490062621968625100101010000101000050284752120018200372003718443318767100102010000201000020037200371110021109101010000101664411165101978610000102003820038200382003820038
10024200371500002621968625100101010000101000050284752120018200372003718443318767100102010000201000020037200371110021109101010000101964481611111978610000102003820038200382003820038
10024200371500002621967545100221010012101000050284752120018200372003718443318767100102010000201000020037200371110021109101010000100144644101610101978610000102003820038200382003820038
100242003715000026219686251001010100001010000502847521200182003720037184433187671001020100002010000200372003711100211091010100001023644131610101978610000102003820038200382003820038
100242003715000026219686251001010100001010000502847521200182003720037184433187671001020100002010000200372003711100211091010100001016644101610101978610000102003820038200382003820038
10024200371500002621968625100101010000101000050284752120018200372003718443318767100102010000201000020037200371110021109101010000102964451610101978610000102003820038200382003820038
10024200371500002621968625100101010000101000050284752120018200372003718443318767100102010000201000020037200371110021109101010000104964411161051978610000102003820038200382003820038
100242003715000026219686251001010100001010000502847521200182003720037184433187671001020100002010000200372003711100211091010100001016064410165111978610000102003820038200382003820038
100242003715000026219686251001010100001010000502847521200182003720037184433187671001020100002010000200372003711100211091010100001029644101611111978610000102003820038200382003820038

Test 3: throughput

Count: 8

Code:

  cmle v0.16b, v8.16b, #0
  cmle v1.16b, v8.16b, #0
  cmle v2.16b, v8.16b, #0
  cmle v3.16b, v8.16b, #0
  cmle v4.16b, v8.16b, #0
  cmle v5.16b, v8.16b, #0
  cmle v6.16b, v8.16b, #0
  cmle v7.16b, v8.16b, #0
  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)cdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
8020420047150034258010810080008100800205006401322001920038200389977699898012020080032200800322003820038118020110099100100800001000911151181160020035800001002003920039200392003920039
8020420038150029258010810080008100800205006401322001920038200389977699898012020080032200800322003820038118020110099100100800001000011151180160020035800001002003920039200392003920039
80204200381500292580108100800081008002050064013220019200382003899776998980120200800322008003220038200381180201100991001008000010019011151180160020035800001002003920039200392003920039
8020420038150029258010810080008100800205006401322001920038200389977699898012020080032200800322003820038118020110099100100800001000011151180160020035800001002003920039200392003920039
8020420038150029258010810080008100800205006401322001920038200389977699898012020080032200800322003820038118020110099100100800001001011151180160020035800001002003920039200392003920039
8020420038150029258010810080008100800205006401322001920038200389977699898012020080032200800322003820038118020110099100100800001003011151180160020035800001002003920039200392003920039
8020420038150029258010810080008100800205006401322001920038200389977699898012020080032200800322003820038118020110099100100800001000011151180160020035800001002003920039200392003920039
8020420038150029258010810080008100800205006401322001920038200389977699898012020080032200800322003820038118020110099100100800001000011151180160020035800001002003920039200392003920039
8020420038150029258010810080008100800205006401322001920038200389977699898012020080032200800322003820038118020110099100100800001001011151180160020035800001002003920039200392003920039
8020420038150029258010810080008100800205006401322001920038200389977699898012020080032200800322003820038118020110099100100800001000011151180160020035800001002003920039200392003920039

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)09l2 tlb miss data (0b)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)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)st unit uop (a7)l1d cache writeback (a8)a9acc2cfd0d2d5map dispatch bubble (d6)d9ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
800242003915000000001442580010108000010800005064000000200192003820038999631001880010208000020800002003820038118002110910108000010000000005020002160662003580000102003920039200392003920039
80024200381500000000392580010108000010800005064000000200192003820038999631001880010208000020800002003820038118002110910108000010000000005020002162532003580000102003920039200392003920039
80024200381500000000392580010108000010800005064000000200192003820038999631001880010208000020800002003820038118002110910108000010000000005020003164652003580000102003920039200392003920039
800242003815000000001022580010108000010800005064000000200192003820098999631001880010208000020800002003820038118002110910108000010000000005020005162322003580000102003920039200392003920039
80024200381500000000392580010108000010800005064000000200192003820038999631001880010208000020800002003820038118002110910108000010000000005020006160352003580000102003920039200392003920039
80024200381500000000392580010108000010800005064000000200192003820038999631001880010208000020800002003820038118002110910108000010000000005020003160232003580000102003920039200392003920039
800242003815000000001232580010108000010800005064000000200192003820038999631001880010208000020800002003820038118002110910108000010000000005020003162532003580000102003920039200392003920039
80024200381500000000392580010108000010800005064000015200192003820038999631001880010208000020800002003820038118002110910108000010000000005020005162532003580000102003920039200392003920039
800242003815000000001442580010108000010800005064000015200192003820038999631001880109208000020800002003820038118002110910108000010000000005020542160362003580000102003920039200392003920039
800242003815000000002132580010108000010800005064000015200192003820038999631001880010208000020800002003820038118002110910108000010000000005020006160832003580000102003920039200392003920039