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

DUP (element, scalar, S)

Test 1: uops

Code:

  dup s0, v0.s[1]
  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
100420371506116862510001000100026452112018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
100420371506116862510001000100026452102018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
100420371506116862510001000100026452112018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
100420371506116862510001000100026452112018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
100420371506116862510001000100026452112018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
100420371606116862510001000100026452112018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
100420371506116862510001000100026452112018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
100420371506116862510001000100026452112018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
100420371506116862510001000100026452112018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
100420371506116862510001000100026452112018203720371571318951000100010002037203711100110000073116111786100020382038203820382038

Test 2: Latency 1->2

Code:

  dup s0, v0.s[1]
  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)03181e1f3f4e51schedule 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)acbranch 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
1020420037150000611968625101001001000010010000500284752102001820037200371842861874110100200100082001000820037200371110201100991001001000010001011171701600198000100001002003820038200382003820038
1020420037150000611968625101001001000010010000500284752112001820037200371842861874110100200100082001000820037200371110201100991001001000010000011171801600198000100001002003820038200382003820038
1020420037150000611968625101001001000010010000500284752112001820037200371842131874510100200100002001000020037200371110201100991001001000010001794300071011611197910100001002003820038200382003820038
1020420037150000611968625101001001000010010000500284752102001820037200371842131874510100200100002001000020037200371110201100991001001000010001300071011611197910100001002003820038200382003820038
10204200371500001031968625101001001000010010000500284752112001820037200371842131874510100200100002001000020037200371110201100991001001000010002300071011611197910100001002003820038200382003820038
10204200371500120611968625101001001000010010000500284752102001820037200371842131874510100200100002001000020037200371110201100991001001000010002300071021611197910100001002003820038200382003820038
10204200371501144881241967525101001211001210010000500284752102001820037200371842131874510100200100002001000020037200371110201100991001001000010001900071011611197910100001002003820038200382003820038
1020420037150000611968625101001001000010010000500284752112001820037200371842131874510100200100002001000020037200371110201100991001001000010001000071011611197910100001002003820038200382003820038
1020420037150000611968625101001001000010010000500284752112001820037200371842131874510100200100002001000020037200371110201100991001001000010000600071011611197910100001002003820038200382003820038
1020420037150000611968625101001001000010010000500284752112001820037200371842131874510100200100002001000020037200371110201100991001001000010001600071011611197910100001002003820038200382003820038

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0037

retire uop (01)cycle (02)033f4e51schedule 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)l1d cache writeback (a8)a9accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
1002420037150611968625100101010000101000050284752102001802003720037184433187671001020100002010000200372003711100211091010100001000000640216221978610000102003820038200382003820038
1002420037150611968625100101010000101000050284752102001802003720037184431018767100102010000201000020037200371110021109101010000100000114640216221978610000102003820038200382003820038
1002420037150611968625100101010000101000050284752102001802003720037184433187671001020100002010000200372003711100211091010100001000000640216221978610000102003820038200382003820038
1002420037150611968625100101010000101000050284752112001802003720037184433187671001020100002010000200372003711100211091010100001000100640216221978610000102003820038200382003820038
1002420037150611968625100101010000101000050284752102001802003720037184433187671001020100002010000200372003711100211091010100001000100640216221978610000102003820038200382003820038
10024200371509419686251001010100001010000502847521120018020037200371844331876710160201000020100002003720037111002110910101000010000018640216221978610000102003820038200382003820038
1002420037150611968625100101010000101000050284752102001802003720037184433187671001020100002010000200372003711100211091010100001000000640216221978610000102003820038200382003820038
1002420037150611968625100101010000101000050284752102001802003720037184433187671001020100002010000200372003711100211091010100001000000640216221978610000102003820038200382003820038
1002420037150611968625100101010000101000050284752112001802003720037184433187671001020100002010000200372003711100211091010100001000300640216221978610000102003820038200382003820038
1002420037150611968625100101010000101000050284752102001802003720037184433187671001020100002010000200372003711100211091010100001000000640216221978610000102003820038200382003820038

Test 3: throughput

Count: 8

Code:

  dup s0, v8.s[1]
  dup s1, v8.s[1]
  dup s2, v8.s[1]
  dup s3, v8.s[1]
  dup s4, v8.s[1]
  dup s5, v8.s[1]
  dup s6, v8.s[1]
  dup s7, v8.s[1]
  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)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 tlb access (a0)l1d tlb miss (a1)ld unit uop (a6)l1d 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
802042005915000292580108100800081008002050064013212001920038200389977699898012020080032200800322003820038118020110099100100800001000000011151181160020035800001002003920039200392003920039
8020420038150006427801161008001610080028500640196020028200492004999769998680128200800382008003820049200491180201100991001008000010000005422251281231120046800001002005020049200492005020049
802042004915000642680116100800161008002850064019612002820048200489976999868012820080038200800382004820048118020110099100100800001000000022251291231120046800001002004920049200492004920049
8020420048150009462780116100800161008002850064019612002820049200489976999868012820080038200800382004820049118020110099100100800001000000022251282231120045800001002004920050200492004920049
8020420048150006426801161008001610080028500640196020028200492004999761099868012820080038200800382004820048118020110099100100800001000000022251281231120046800001002005020050200492004920049
80204200491500064268011610080016100800285006401960200282004820049997610998680128200800382008003820049200481180201100991001008000010000017822251291231120045800001002004920050200502005020049
8020420049150007292680116100800161008002850064019602002820048200489976999868012820080038200800382004920049118020110099100100800001000000022251281231120045800001002005020050200492004920050
802042004815000642780116100800161008002850064019612002820048200489976999868012820080038200800382004820048118020110099100100800001000000022251281231120045800001002004920050200492004920050
802042004815000642780116100800161008002850064019612002820048200489976999868012820080038200800382004920048118020110099100100800001000000022251281231120045800001002004920049200492004920049
8020420049150006426801161008001610080028500640196120028200492004899761099868012820080038200800382004820048118020110099100100800001000000022251291231120045800001002004920049200492004920050

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)1e1f3a3f51schedule 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)accfd0d2l1i cache miss demand (d3)d5map dispatch bubble (d6)ddfetch restart (de)dfe0eaeb? simd retires (ee)? int retires (ef)f5f6f7f8fd
8002420050150000019972580010108000010800005064000012001920038200389996310018800102080000208000020038200381180021109101080000100205024300816783200350080000102003920039200392003920039
80024200381500000392580010108000010800005064000002001920038200389996310018800102080000208000020038200381180021109101080000100005024300616653200350080000102003920039200392003920039
800242003816000003925800101080000108000050640000020019200382003899963100188001020800002080000200382003811800211091010800001003095024300516653200350080000102003920039200392003920039
800242003815000001252580010108000010800005064000002001920038200389996310018800102080000208000020038200381180021109101080000100005024300616783200350080000102003920039200392003920039
80024200381500000392580010108000010800005064000012001920038200389996310018800102080000208000020038200381180021109101080000100005024300516563200350080000102003920039200392003920039
800242003815000005522580010108000010800005064000002001920038200389996310018800102080000208000020038200381180021109101080000100005024300516563200350080000102003920039200392003920039
80024200381500000392580010108000010800005064000012001920038200389996310018800102080000208000020038200381180021109101080000100005024300516563200350080000102003920039200392003920039
80024200381500000392580010108000010800005064000002001920038200389996310018800102080000208000020038200381180021109101080000100005024300516783200350080000102003920039200392003920039
8002420038150000039258001010800001080000506400000200192003820038999631001880010208000020800002003820038118002110910108000010140875024300516563200350080000102003920039200392003920039
800242003815000003925800101080000108000050640000120019200382003899963100188001020800002080000200382003811800211091010800001000050243001016653200350080000102003920039200392003920039