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, 8H)

Test 1: uops

Code:

  cmle v0.8h, v0.8h, #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)031e1f3f4e51schedule 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
1004203715006116862510001000100026452102018203720371571318951000100010002037203711100110000073216111786100020382038203820382038
1004203716008216862510001000100026452102018203720371571318951000100010002037203711100110001073116111786100020382038203820382038
1004203715006116862510001000100026452102018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
1004203715006116862510001000100026452102018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
1004203715006116862510001000100026452102018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
1004203715006116862510001000100026452102018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
1004203715006116862510001000100026452102018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
1004203715008216862510001000100026452102018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
1004203715006116862510001000100026452102018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
1004203715006116862510001000100026452102018203720371571318951000100010002037203711100110000073116111786100020382038203820382038

Test 2: Latency 1->2

Code:

  cmle v0.8h, v0.8h, #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)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)9fld unit uop (a6)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
10204200371500611968625101001001000010010000500284752102001820037200371842131874510100200100002001000020037200371110201100991001001000010007101161119791100001002003820038200382003820038
102042003715001471968625101001001000010010000500284752102001820037200371842131874510100200100002001000020037200371110201100991001001000010007101161119791100001002003820038200382003820038
10204200371500611968625101001001000010010000500284752102001820037200371842131874510100200100002001000020037200371110201100991001001000010007101241119791100001002003820038200382003820038
10204200371500611968625101001001000010010000500284752102001820037200371842131874510100200100002001000020037200371110201100991001001000010007101161119791100001002003820038200382003820038
10204200371500891968625101001001000010010000500284752102001820037200371842131874510100200100002001000020037200371110201100991001001000010007101161119791100001002003820038200382003820038
102042003715008121968625101001001000010010000500284752102001820037200371842131874510100200100002001000020037200371110201100991001001000010007101161119791100001002003820038200382003820038
10204200371500611968625101001001000010010000500284752112001820037200371842131874510100200100002001000020037200371110201100991001001000010007101161119791100001002003820038200382003820038
10204200371500611968625101001001000010010000500284752102001820037200371842131874510100200100002001000020037200371110201100991001001000010007101161119791100001002003820038200382003820038
10204200371500611968625101001001000010010000500284752112001820037200371842131874510100200100002001000020037200371110201100991001001000010007101161119791100001002003820038200382003820038
10204200371500611968625101001001000010010000500284752102001820037200371842131874510100200100002001000020037200371110201100991001001000010007101161119791100001002003820038200382003820038

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0037

retire uop (01)cycle (02)03l2 tlb miss data (0b)191e1f3f4e51schedule 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 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
10024200371500000611968625100101010000101000050284752112001802003720037184433187671001020100002010000200372003711100211091010100001000000006402162219786010000102003820038200382003820038
10024200371500000611968625100101010000101000050284752112001802003720037184433187671001020100002010000200372003711100211091010100001000000006402162219786010000102003820038200382003820038
10024200371500000611968625100101010000101000050284752112001802003720037184433187671001020100002010000200372003711100211091010100001000000006402162219786010000102003820038200382003820038
10024200371500000611968625100101010000101000050284752112001802003720037184433187671001020100002010000200372003711100211091010100001000000006402162219786010000102003820038200382003820038
10024200371500000611968625100101010000101000050284752102001802003720037184433187851001020100002010000200372003711100211091010100001000000006402162219786010000102003820038200382003820038
10024200371500000711968625100101010000101000050284752102001802003720037184433187671001020100002010000200372003711100211091010100001000000006402162219786010000102003820038200382003820038
10024200371500000611968625100101010000101000050284752102001802003720037184433187671001020100002010000200372003711100211091010100001000000006402162219786010000102003820038200382003820038
10024200371500000611968625100101010000101000050284752102001802003720037184433187671001020100002010000200372003711100211091010100001000000006402162219786010000102003820038200382003820038
10024200371500000611968644100101010000101000050284752112001802003720037184433187671001020100002010000200372003711100211091010100001000000006402162219786010000102003820038200382003820038
10024200371500000611968644100101010000101000050284752112001802003720037184433187671001020100002010000200372003711100211091010100001000000006402162219786010000102003820038200382003820038

Test 3: throughput

Count: 8

Code:

  cmle v0.8h, v8.8h, #0
  cmle v1.8h, v8.8h, #0
  cmle v2.8h, v8.8h, #0
  cmle v3.8h, v8.8h, #0
  cmle v4.8h, v8.8h, #0
  cmle v5.8h, v8.8h, #0
  cmle v6.8h, v8.8h, #0
  cmle v7.8h, v8.8h, #0
  movi v8.16b, 9

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code divided by count): 0.2506

retire uop (01)cycle (02)03091e3a3f51schedule 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
802042005715010029258010810080008100800205006401322001920038200389977699898012020080032200800322003820038118020110099100100800001000011151182161220035800001002004920049200492004920049
8020420049151000642680116100800161008002850064019620028200492004899761099868012820080038200800382004820048118020110099100100800001000022251283232320046800001002004920049200492004920049
802042004815000064278011610080016100800285006401962002820048200489976999868012820080038200800382004920048118020110099100100800001000022251291233420045800001002004920049200492004920049
80204200491500002542680116100800161008002850064019620028200482008699761099868012820080038200800382004820048118020110099100100800001000022251292233220045800001002005020049200492004920049
8020420049150000642780116100800161008002850064019620028200492004999761099868012820080038200800382004820049118020110099100100800001000022251282232320045800001002004920050200502004920050
802042004815000064268011610080016100800285006401962002820048200489976999868012820080038200800382004920049118020110099100100800001000022251282233320045800001002004920049200492004920050
802042004915000064278011610080016100800285006401962002820048200489976999868012820080038200800382004820049118020110099100100800001000022251282232320045800001002004920049200502004920049
8020420049150000642680116100800161008002850064019620028200492004999761099868012820080038200800382004820048118020110099100100800001001022251282233220046800001002004920049200492004920049
802042004815000064268011610080016100800285006401962002820049200499976999868012820080038200800382004920049118020110099100100800001000022251283233220046800001002004920049200492004920049
802042004815000064278011610080016100800285006401962002820049200489976999868012820080038200800382004820048118020110099100100800001000022251283232220046800001002004920050200492005020050

1000 unrolls and 10 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)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
8002420039150039258001010800001080000506400000200192003820038999631001880010208000020800002003820038118002110910108000010005020416532003580000102003920039200392003920039
80024200381500324258001010800001080000506400000200792003820038999631001880010208000020800002003820038118002110910108000010005020516532003580000102003920039200392003920039
8002420038150039258001010800001080000506400000200192003820038999631001880010208000020800002003820038118002110910108000010005020516532003580000102003920039200392003920039
8002420038150039258001010800001080000506400000200192003820038999631001880010208000020800002003820038118002110910108000010005020516552003580000102003920039200392003920039
80024200381501539258001010800001080000506400000200192003820038999631001880010208000020800002003820038118002110910108000010005020316532003580000102003920039200392003920039
8002420038150039258001010800001080000506400000200192003820038999631001880010208000020800002003820038118002110910108000010005037516352003580000102003920039200392003920039
8002420038150039258001010800001080000506400000200192003820038999631001880010208000020800002003820038118002110910108000010005020516352003580000102003920039200392003920039
8002420038150039258001010800001080000506400000200192003820038999631001880010208000020800002003820038118002110910108000010035020316352003580000102003920039200392003920039
8002420038150039258001010800001080000506400001200192003820038999631001880010208000020800002003820038118002110910108000010005020616552003580000102003920039200392003920039
8002420038150639258001010800001080000506400000200192003820038999631001880010208000020800002003820038118002110910108000010005020516552003580000102003920039200392003920039