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, 8B)

Test 1: uops

Code:

  cmle v0.8b, v0.8b, #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 tlb miss (a1)ld unit uop (a6)l1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
10042037150841686251000100010002645211201820372037157131895100010001000203720371110011000000073116111786100020382038203820382038
10042037150611686251000100010002645210201820372037157131895100010001000203720371110011000000073216111786100020382038203820382038
10042037150611686251000100010002645210201820372037157131895100010001000203720371110011000000073116111786100020382038203820382038
10042037150611686251000100010002645210201820372037157131895100010001000203720371110011000020373116111786100020382038203820382038
10042037160611686251000100010002645210201820372037157131895100010001000203720371110011000000073116111786100020382038203820382038
10042037150611686251000100010002645210201820372037157131895100010001000203720371110011000000073116111786100020382038203820382038
10042037150821686251000100010002645210201820372037157131895100010001000203720371110011000000073116111786100020382038203820382038
100420371527611686251000100010002645210201820372037157131895100010001000203720841110011000000073116111786100020382038203820382038
10042037160611686251000100010002645210201820372037157131895100010001000203720371110011000000075216111786100020382038203820382038
10042037150611686251000100010002645211201820372037157131895100010001000203720371110011000000073116111786100020382038203820382038

Test 2: Latency 1->2

Code:

  cmle v0.8b, v0.8b, #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)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)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)l1d cache writeback (a8)a9acbranch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
1020420037150006119686251010010010000100100005002847521200182003720037184287187411010020010008200100082003720037111020110099100100100001000000011171801600198010100001002003820038200382003820038
1020420037150006119686251010010010000100100005002847521200182003720037184287187411010020010008200100082003720037111020110099100100100001000000011171701600198000100001002003820038200382003820038
10204200371500061196862510100100100001001000050028475212001820037200371842871874110100200100082001000820085200371110201100991001001000010000004511171801600198010100001002003820038200382003820038
1020420037150006119686251010010010000100100005002847521200182003720037184286187401010020010008200100082003720037111020110099100100100001000000011171701600198010100001002003820038200382003820038
1020420037150006119686251010010010000100100005002847521200182003720037184213187451010020010000200100002003720037111020110099100100100001000010000071011611197910100001002003820038200382003820038
1020420037150006119686251010010010000100100005002847521200182003720037184213187451010020010000200100002003720037111020110099100100100001000000000071011611197910100001002003820038200382003820038
10204200371500061196862510100100100001001000050028475212001820037200371842131874510100200100002001000020037200371110201100991001001000010000006300071011611197910100001002003820038200382003820038
1020420037150066119686251010010010000100100005002847521200182003720037184213187451010020010000200100002003720037111020110099100100100001000200000071011611197910100001002003820038200382003820038
10204200371500025119686251010010010000100100005002847521200182003720037184213187451010020010000200100002003720037111020110099100100100001000000000071011611197910100001002003820038200382003820038
1020420037150006119686251010010010000100100005002847521200182003720037184213187451010020010000200100002003720037111020110099100100100001000000000071011611197910100001002003820038200382003820038

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0037

retire uop (01)cycle (02)0309191e3f4e51schedule 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)l1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
10024200371560090611968625100101010000101000050284752102001820037200371844331876710010201000020100002003720037111002110910101000010000640416221978610000102003820038200382003820038
1002420037150000611968625100101010000101000050284752102001820037200371844331876710010201000020100002003720037111002110910101000010000640216221978610000102003820038200382003820038
10024200371500008219686251001010100001010000502847521020018200372003718443318767100102010000201000020037200371110021109101010000100063640216221978610000102003820038200382003820038
1002420037150000611968625100101010000101000050284752102001820037200371844331876710010201000020100002003720037111002110910101000010000640216221978610000102003820038200382003820038
1002420037150000611968625100101010000101000050284752102001820037200371844331876710010201000020100002003720037111002110910101000010000640216221978610000102003820038200382003820038
1002420037150000611968625100101010000101000050284752102001820037200371844331876710010201000020100002003720037111002110910101000010000640216221978610000102003820038200382003820038
1002420037150000611968625100101010000101000050284752102001820037200371844331876710010201000020100002003720037111002110910101000010000640216221978610000102003820038200382003820038
1002420037150000611968625100101010000101000050284752102001820037200371844331876710010201000020100002003720037111002110910101000010000640216221978610000102003820038200382003820038
1002420037155000611968625100101010000101000050284752112001820037200371844331876710010201000020100002003720037111002110910101000010000640216221978610000102003820038200382003820038
1002420037150000611968625100101010000101000050284752102001820037200371844331876710010201000020100002003720037111002110910101000010000640216221978610000102003820038200382003820038

Test 3: throughput

Count: 8

Code:

  cmle v0.8b, v8.8b, #0
  cmle v1.8b, v8.8b, #0
  cmle v2.8b, v8.8b, #0
  cmle v3.8b, v8.8b, #0
  cmle v4.8b, v8.8b, #0
  cmle v5.8b, v8.8b, #0
  cmle v6.8b, v8.8b, #0
  cmle v7.8b, v8.8b, #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)03mmu table walk instruction (07)mmu table walk data (08)09l2 tlb miss instruction (0a)1e3f51schedule 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)st unit uop (a7)l1d cache writeback (a8)acc2branch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
802042005715010010292580108100800081008002050064013212001920038200389977699898012020080032200800322003820038118020110099100100800001000000011151182161120035800001002003920039200392003920039
802042003815010010292580108100800081008002050064013202001920038200389977699898012020080032200800322003820038118020110099100100800001000000011151181161120035800001002003920039200392003920039
8020420038150100102192580108100800081008002050064013212001920038200389977699898012020080032200800322003820038118020110099100100800001000000011151181161120035800001002003920039200392003920039
8020420038150100115292580108100800081008002050064013212001920038200389977699898012020080032200800322003820038118020110099100100800001000000011151181161120035800001002003920039200392009220039
802042003815010010712580108100800081008002050064013212001920038200389977699898012020080032200800322003820038118020110099100100800001000000011151181161120035800001002003920039200392003920039
8020420089150100101132580108100800081008002050064013212001920038200389977699898012020080032200800322003820038118020110099100100800001000000011151181161120035800001002003920039200392003920039
8020420038150100102192580108100800081008002050064013212001920038200389977699898012020080032200800322003820038118020110099100100800001000000011151181161120035800001002003920039200392003920039
802042003815010010292580108100800081008002050064013202001920038200389977699898012020080032200800322003820038118020110099100100800001000000011151181161120035800001002003920039200392003920039
802042003815010010292580108100800081008002050064013212001920038200389977699898012020080032200800322003820038118020110099100100800001000000011151181161120035800001002003920039200392003920039
802042003815010010292580108100800081008002050064013202001920038200389977699898012020080032200800322003820038118020110099100100800001000000011151181161120035800001002003920039200392003920039

1000 unrolls and 10 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)a9acbranch cond mispred nonspec (c5)cfd5map dispatch bubble (d6)ddfetch restart (de)e0ec? simd retires (ee)? int retires (ef)f5f6f7f8fd
800242005015000419258001010800001080000506400000200192003820038999631001880010208000020800002003820038118002110910108000010000050206167520035080000102003920039200392003920039
80024200871500039258001010800001080000506400000200192003820038999631001880010208000020800002003820038118002110910108000010303050206167520035080000102003920039200392003920039
80024200381500039258001010800001080000506400000200192003820038999631001880010208000020800002003820038118002110910108000010000050207165420035080000102003920039200392003920039
80024200381500039258001010800001080000506400001200192003820038999631001880010208000020800002003820038118002110910108000010000050205166820035080000102003920039200392003920039
8002420038150003925800101080000108000050640000120019200382003899963100188001020800002080000200382003811800211091010800001000159050207167520035080000102003920039200392003920039
800242003815010514258001010800001080000506400001200192003820038999631001880010208000020800002003820038118002110910108000010000050208166520035080000102003920039200392003920039
8002420038150003925800101080000108000050640000120019200382003899963100188001020800002080000200382003811800211091010800001000120050207165520035080000102003920039200392003920039
80024200381500039258001010800001080000506400000200192003820038999631001880010208000020800002003820038118002110910108000010000050206165620035080000102003920039200392003920039
80024200381500039258001010800001080000506400001200192003820038999631001880010208000020800002003820038118002110910108000010309050207166620035080000102003920039200392003920039
800242003815000392580010108000010800005064000012001920038200389996310018800102080000208000020038200381180021109101080000102209050209166720035080000102003920039200392003920039