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, vector, 8B)

Test 1: uops

Code:

  dup v0.8b, v0.b[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
100420371508216862510001000100026452112018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
100420371636116862510001000100026452102018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
1004203715486116862510001000100026452112018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
100420371506116862510001000100026452102018203720371571318951000100010002037203711100110001073116111786100020382038203820382038
10042037156061168625100010001000264521020182037203715713189510001000100020372037111001100007873116111786100020382038203820382038
1004203715061168625100010001000264521020182037203715713189510001000100020372037111001100004573116111786100020382038203820382038
100420371506116862510001000100026452102018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
1004203715910316862510001000100026452112018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
100420371506116862510001000100026452112018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
10042037150611686251000100010002645210201820372037157131895100010001000203720371110011000015373116111786100020382038203820382038

Test 2: Latency 1->2

Code:

  dup v0.8b, v0.b[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)030f1e3f4e51schedule 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
102042003715020611968625101001001000010010000500284752120018200372003718421318764101002001000020010000200372003711102011009910010010000100107341161119791100001002003820038200382003820038
102042003715000611968625101001001000010010000500284752120018200372003718421318745101002001000020010000200372003711102011009910010010000100107101161119791100001002003820038200382003820038
102042003715000611968625101001001000010010000500284752120018200372003718421318745101002001000020010000200372003711102011009910010010000100307101161119856100001002003820038200382003820038
102042003715000611968625101001001000010010000500284752120018200372003718421318745101002001000020010000200372003711102011009910010010000100107101161119791100001002003820038200382003820038
1020420037150005361968625101001001000010010000500284752120018200372003718421318745101002001000020010000200372003711102011009910010010000100007101161119791100001002003820038200382003820038
102042003715000611968625101001001000010010000500284752120018200372003718421318745101002001000020010000200372003711102011009910010010000100197101161119791100001002003820038200382003820038
102042008415000611968625101001001000010010000500284752120018200372003718421318745101002001000020010000200372003711102011009910010010000100307101161119791100001002003820038200382003820038
1020420037150006119686251010010010000100100005002847521200182003720037184213187451010020010000200100002003720037111020110099100100100001003337101161119791100001002003820038200382003820038
102042003715000611968625101001001000010010000500284752120018200372003718421318745101002001000020010000200372003711102011009910010010000100107101161119791100001002003820038200382003820038
102042003715000611968625101001001000010010000500284752120018200372003718421318745101002001000020010000200372003711102011009910010010000100007101161119791100001002003820038200382003820038

1000 unrolls and 10 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)9fl1d tlb access (a0)l1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
1002420037150015019686251001010100001010000502847521120018200372003718443318767100102010000201000020037200371110021109101010000100006402163219786010000102003820038200382003820038
1002420037150025319686251001010100001010000502847521120018200372003718443318767100102010000201000020037200371110021109101010000100006402162219786010000102003820038200382003820038
100242003715006119686251001010100001010000502847521120018200372003718443318767100102010000201000020037200371110021109101010000104006402162219786010000102003820038200382003820038
10024200371502434619686251001010100001010000502847521120018200372003718443318767100102010000201000020037200371110021109101010000100006402162219786010000102003820038200382003820038
100242003715006119686251001010100001010000502847521120018200372003718443318767100102010000201000020037200371110021109101010000100006402162219786010000102003820038200382003820038
100242003715006119686251001010100001010000502847521120018200372003718443318767100102010000201000020037200371110021109101010000100006402162219786010000102003820038200382003820038
100242003715006119686251001010100001010000502847521120018200372003718443318767100102010000201000020037200371110021109101010000100006402162219786010000102003820038200382003820038
100242003715006119686251001010100001010000502847521120018200372003718443318767100102010000201000020037200371110021109101010000100006402162219786010000102003820038200382003820038
100242003715006119686251001010100001010000502847521120018200372003718443318767100102010000201000020037200371110021109101010000100006402162219786010000102003820038200382003820038
100242003715006119686251001010100001010000502847521120018200372003718443318767100102010000201000020037200371110021109101010000100006402162219786010000102003820038200382003820038

Test 3: throughput

Count: 8

Code:

  dup v0.8b, v8.b[1]
  dup v1.8b, v8.b[1]
  dup v2.8b, v8.b[1]
  dup v3.8b, v8.b[1]
  dup v4.8b, v8.b[1]
  dup v5.8b, v8.b[1]
  dup v6.8b, v8.b[1]
  dup v7.8b, v8.b[1]
  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 data (08)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)l1d tlb miss (a1)l1d cache writeback (a8)acbranch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfd5map dispatch bubble (d6)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
802042005715000292580108100800081008002050064013212001920038200389977699898012020080032200800322003820038118020110099100100800001000000111511801620035800001002003920039200392003920039
802042003815000292580108100800081008002050064013212001920038200389977699898012020080032200800322003820038118020110099100100800001000000111511801620035800001002003920039200392003920039
802042003815000292580108100800081008002050064013212001920038200389977699898012020080032200800322003820038118020110099100100800001000000111511801620035800001002003920039200392003920039
8020420038150001152580108100800081008002050064013202001920038200389977699898012020080032200800322003820038118020110099100100800001000200111511801620035800001002003920039200392003920039
802042003815000292580108100800081008002050064013212001920038200389977699898012020080032200800322003820038118020110099100100800001000000111511801620035800001002003920039200392003920039
802042003815000292580108100800081008002050064013212001920038200389977699898012020080032200800322003820038118020110099100100800001000000111511801620035800001002003920039200392003920039
80204200381500010342580108100800081008002050064013212001920038200389977699898012020080032200800322003820038118020110099100100800001000000111511801620035800001002003920039200392003920039
802042003815000502580108100800081008002050064013212001920038200389977699898012020080032200800322003820038118020110099100100800001000000111511801620035800001002003920039200392003920039
802042003815000292580108100800081008002050064013212001920038200389977699898012020080032200800322003820038118020110099100100800001000000111511801620035800001002003920039200392003920039
802042003815000942580108100800081008002050064013212001920038200389977699898012020080032200800322003820038118020110099100100800001000000111511801620035800001002003920039200392003920039

1000 unrolls and 10 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)l2 tlb miss instruction (0a)l2 tlb miss data (0b)18191e1f3a3f51schedule 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)5f60696d6emap 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)a9acc2cfd5map dispatch bubble (d6)d9daddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
8002420039150000000000392580010108000010800005064000001200192003820038999631001880010208000020800002003820038118002110910108000010000000005020191617017262003580000102003920039200392003920039
8002420038150000000000392580010108000010800005064000000200192003820038999631001880010208000020800002003820038118002110910108000010000000005020271612029262003580000102003920039200392003920039
8002420038150000000000392580010108000010800005064000000200192003820038999631001880010208000020800002003820038118002110910108000010000000005020151613127252003580000102003920039200392003920039
80024200381500000000001272580010108000010800005064000001200192003820038999631001880010208000020800002003820038118002110910108000010000000005020161613029222003580000102003920039200392003920039
80024200381500000000001482580010108000010800005064000001200192003820038999631001880010208000020800002003820038118002110910108000010000000005020271615028282003580000102003920039200392003920039
80024200381500000000001022580010108000010800005064000000200192003820038999631001880010208000020800002003820038118002110910108000010000000005020241614023242003580000102003920039200392003920039
8002420038150000000000392580010108000010800005064000000200192003820038999631001880010208000020800002003820038118002110910108000010000000005020271611027162003580000102003920039200392003920039
8002420038150000000000392580010108000010800005064000000200192003820038999631001880010208000020800002003820038118002110910108000010000000005020171610022282003580000102003920039200392003920039
8002420038150000000000392580010108000010800005064000000200192003820038999631001880010208000020800002003820038118002110910108000010000000005020271612027282003580000102003920039200392003920039
8002420038150000000000392580010108000010800005064000000200192003820038999631001880010208000020800002003820038118002110910108000010000000005020151612028272003580000102003920039200392003920039