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, 4S)

Test 1: uops

Code:

  cmle v0.4s, v0.4s, #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
1004203715006116862510001000100026452102018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
1004203715006116862510001000100026452102018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
10042037151206116862510001000100026452102018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
1004203715006116862510001000100026452102018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
1004203715006116862510001000100026452102018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
1004203715006116862510001000100026452102018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
1004203715006116862510001000100026452102018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
1004203715006116862510001000100026452102018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
1004203715006116862510001000100026452102018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
1004203715006116862510001000100026452112018203720371571318951000100010002037203711100110000073116111786100020382038203820382038

Test 2: Latency 1->2

Code:

  cmle v0.4s, v0.4s, #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)simd prf full (72)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)accdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)ea? simd retires (ee)? int retires (ef)f5f6f7f8fd
1020420037150061196862510100100100001001000050028475211200182003720037184210318745101002001000020010000200372003711102011009910010010000100000710116111979100100001002003820038200382003820038
1020420037150061196864510100100100001001000050028475210200182003720037184210318745101002001000020010000200372003711102011009910010010000100000710116111979100100001002003820038200382003820038
1020420037149061196862510100100100001001000050028475210200182003720037184210318745101002001000020010000200372003711102011009910010010000100000710116111979100100001002003820038200382003820038
1020420037150061196862510100100100001001000050028475211200182003720037184210318745101002001000020010000200372003711102011009910010010000100000710116111979100100001002003820038200382003820038
1020420037150661196862510100100100001001000050028475211200182003720037184217318745101002001000020010000200372003711102011009910010010000100000710116111979100100001002003820038200382003820038
1020420037150061196862510100100100001001000050028475211200182003720037184210318745101002001000020010000200372003711102011009910010010000100000710116111979170100001002003820038200382003820038
1020420037150061196862510100100100001001000050028475210200182003720037184210318745101002001000020010000200372003711102011009910010010000100000710116111979100100001002003820038200382003820038
1020420037150961196862510100100100001001000050028475211200182003720037184210318745101002001000020010000200372003711102011009910010010000100000710116111979100100001002003820038200382003820038
1020420037150061196862510100100100001001000050028475211200182003720037184210318745101002001000020010000200372003711102011009910010010000100000710116111979100100001002003820038200382003820038
1020420037150061196862510100100100001001000050028475211200182003720037184210318745101002001000020010000200372003711102011009910010010000100000710116111979100100001002003820038200382003820038

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0037

retire uop (01)cycle (02)03l2 tlb miss data (0b)1e3f4e51schedule 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)l1d cache writeback (a8)a9accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
10024200371500061196862510010101000010100005028475211200182003720037184433187671001020100002010000200372003711100211091010100001000006403163319786010000102003820038200382003820038
10024200371500061196862510010101000010100005028475211200182003720037184433187671001020100002010000200372003711100211091010100001003006403163319786010000102003820038200382003820038
10024200371490061196862510010101000010100005028475211200182003720037184433187671001020100002010000200372003711100211091010100001003006403163319786010000102003820038200382003820038
10024200371501061196862510010101000010100005028475211200182003720037184433187671001020100002010000200372003711100211091010100001003006403163319786010000102003820038200382003820038
10024200371500061196862510010101000010100005028475211200182003720037184433187671001020100002010000200372003711100211091010100001000006403163319786010000102003820038200382003820038
10024200371500061196862510010101000010100005028475211200182003720037184433187671001020100002010000200372003711100211091010100001000006403163319786010000102003820038200382003820038
10024200371500061196862510010101000010100005028475211200182003720037184433187671001020100002010000200372003711100211091010100001000006403163319786010000102003820038200382003820038
10024200371500061196862510010101000010100005028475211200182003720037184433187671001020100002010172200372003711100211091010100001001006403163319786010000102003820038200382003820038
100242003715000611968625100101010000101000050284752112001820037200371844331876710010201000020100002003720037111002110910101000010046036403163319786010000102003820038200382003820038
1002420037150006119686251001010100001010000502847521120018200372003718443318767100102010000201000020037200371110021109101010000100201146403163319786010000102003820038200382003820038

Test 3: throughput

Count: 8

Code:

  cmle v0.4s, v8.4s, #0
  cmle v1.4s, v8.4s, #0
  cmle v2.4s, v8.4s, #0
  cmle v3.4s, v8.4s, #0
  cmle v4.4s, v8.4s, #0
  cmle v5.4s, v8.4s, #0
  cmle v6.4s, v8.4s, #0
  cmle v7.4s, v8.4s, #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)03191e3f51schedule 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)acbranch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfd5map dispatch bubble (d6)fetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
80204200611500071258010810080008100800205006401321200192003820038997769989801202008003220080032200882003811802011009910010080000100001115118116020035800001002003920039200392003920039
80204200871500052258010810080008100800205006401321200192003820038997769989801202008003220080032200382003811802011009910010080000100001115118016020035800001002003920039200392003920039
80204200381500029258010810080008100800205006401321200192003820038997769989801202008003220080032200382003811802011009910010080000100001115118016020035800001002003920039200392003920039
80204200381500029258010810080008100800205006401321200192003820038997769989801202008003220080032200382003811802011009910010080000100001115118016020035800001002003920039200392003920039
80204200381500029258010810080008100800205006401321200192003820038997769989801202008003220080032200382003811802011009910010080000100001115118016020035800001002003920039200392003920039
80204200381500029258010810080008100800205006401321200192003820038997769989801202008003220080032200382003811802011009910010080000100001115118016020035800001002003920039200392003920039
80204200381500029258010810080008100800205006401321200192003820038997769989801202008003220080032200382003811802011009910010080000100001115118016020035800001002003920039200392003920039
80204200381500050258010810080008100800205006401321200192003820038997769989801202008003220080032200382003811802011009910010080000100001115118016020035800001002003920039200392003920039
80204200381500029258010810080008100800205006401321200192003820038997769989801202008003220080032200382003811802011009910010080000100001115118016020035800001002003920039200392003920039
802042003815000416258010810080008100800205006401321200192003820038997769989801202008003220080032200382003811802011009910010080000100001115118016020035800001002003920039200392003920039

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)0318191f3a3f51schedule 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)a9acc2cdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
8002420051150000081258001010800001080000506400001200192003820038999631001880010208000020800002003820038118002110910108000010000005020216422003580000102003920039200392003920039
8002420038150000081258001010800001080000506400001200192003820038999631001880010208000020800002003820038118002110910108000010000005020216322003580000102003920039200392003920039
8002420038150000039258001010800001080000506400001200192003820038999631001880010208000020800002003820038118002110910108000010000005020216332003580000102003920039200392003920039
8002420038150000039258001010800001080000506400001200192003820038999631001880010208000020800002003820038118002110910108000010000005020416442003580000102003920039200392003920039
8002420038150000039258001010800001080000506400001200192003820038999631001880010208000020800002003820038118002110910108000010000005020216432003580000102003920039200392003920039
8002420038150000060258001010800001080000506400001200192003820038999631001880010208000020800002003820038118002110910108000010000005020316332003580000102003920039200392003920039
8002420038150000039258001010800001080000506400001200192003820038999631001880010208000020800002003820038118002110910108000010000005020216222003580000102003920039200392003920039
8002420038150000039258001010800001080000506400001200192003820038999631001880010208000020800002003820038118002110910108000010000005020316222003580000102003920039200392003920039
80024200381500000703258001010800001080000506400001200192003820038999631001880010208000020800002003820038118002110910108000010000005020216222003580000102003920039200392003920039
8002420038150000039258001010800001080000506400001200192003820038999631001880010208000020800002003820038118002110910108000010000005020216222003580000102003920039200392003920039