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, 8H)

Test 1: uops

Code:

  dup v0.8h, v0.h[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)031e3a3f4e51schedule 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
1004203715026616862510001000100026452102018203720371571318951000100010002037203711100110000077416541786100020382038203820382038
1004203715028916862510001000100026452102018203720371571318951000100010002037203711100110000077416441786100020382038203820382038
1004203715026616862510001000100026452102018203720371571318951000100010002037203711100110000077416441786100020382038203820382038
1004203715026616862510001000100026452102018203720371571318951000100010002037203711100110000077416441786100020382038203820382038
1004203715028716862510001000100026452102018203720841571318951000100010002037203711100110000077416441786100020382038203820382038
1004203716026616862510001000100026452102018203720371571318951000100010002037203711100110000077416441786100020382038203820382038
10042037150261216862510001000100026452102018203720371571318951000100010002037203711100110000077416441786100020382038203820382038
1004203715026616862510001000100026452102018203720371571318951000100010002037203711100110000077416441786100020382038203820382038
1004203715026616862510001000100026452102018203720371571318951000100010002037203711100110000077416441786100020382038203820382038
1004203715026616862510001000100026452102018203720371571318951000100010002037203711100110000077416441786100020382038203820382038

Test 2: Latency 1->2

Code:

  dup v0.8h, v0.h[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)03mmu table walk data (08)l2 tlb miss data (0b)18191e1f3f4e51schedule 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)a9accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
102042003715000004206119686251010010010000100100005002847521200182003720037184213187451010020010000200100002003720037111020110099100100100001000000071021622197910100001002003820038200382003820038
102042003715000003306119686251010010010000100100005002847521200182003720037184213187451010020010000200100002003720037111020110099100100100001000000071021622197910100001002003820038200382003820038
102042003715000001206119686251010010010000100100005002847521200182003720037184213187451010020010000200100002003720037111020110099100100100001000000071021622197910100001002003820038200382003820038
102042003715000000061196862510100100100001001000050028475212001820037200371842131874510268200100002001000020037200371110201100991001001000010000801571021622197910100001002003820038200382003820038
102042003715000001506119686251010010010000100100005002847521200182003720037184213187451010020010000200100002003720037111020110099100100100001000000071021622197910100001002003820038200382003820038
102042003715000002406119686251010010010000100100005002847521200182003720037184213187451010020010000200100002003720037111020110099100100100001000000071021622197910100001002003820038200382003820038
102042003715000001806119686251010010010000100100005002847521200182003720037184213187451010020010000200100002003720037111020110099100100100001000000071021622197910100001002003820038200382003820038
10204200371500000006119686251010010010000100100005002847521200182003720037184213187451010020010000200100002003720037111020110099100100100001000000071021622197910100001002003820038200382003820038
102042003715000001806119686251010010010000100100005002847521200182003720037184213187451010020010000200100002003720037111020110099100100100001000100071021622197910100001002003820038200382003820038
10204200371500000006119686251010010010000100100005002847521200182003720037184213187451010020010000200100002003720037111020110099100100100001000000071021622197910100001002003820038200382003820038

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0037

retire uop (01)cycle (02)03mmu table walk data (08)l2 tlb miss data (0b)18191e1f3a3f4e51schedule 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)696b6d6emap 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
10024200371500000720061196862510010101000010100005028475212001802003720037184433187671001020100002010000200372003711100211091010100001000000006405162219786010000102003820038200382003820038
1002420037150000000061196862510010101000010100005028475212001802003720037184433187671001020100002010000200372003711100211091010100001000000006402162219786010000102003820038200382003820038
1002420037150000000061196862510010101000010100005028475212001802003720037184433187671001020100002010000200372003711100211091010100001000000006402162219786010000102003820038200382003820038
10024200371500000270061196862510010101000010100005028475212001802003720037184433187671001020100002010000200372003711100211091010100001000000006402162219786010000102003820038200382003820038
1002420037150000400061196862510010101000010100005028475212001802003720037184433187671001020100002010000200372003711100211091010100001000000006402162219786010000102003820038200382003820038
1002420037150000000061196862510010101000010100005028475212001802003720037184433187671001020100002010000200372003711100211091010100001000000006402162219786010000102003820038200382003820038
1002420037150000000061196862510010101000010100005028475212001802003720037184433187671001020100002010000200372003711100211091010100001000010006402162219786010000102003820038200382003820038
100242003715000004530061196862510010101000010100005028475212001832003720037184433187671001020100002010000200372003711100211091010100001000000006402162219786010000102003820038200382003820038
1002420037150000000061196862510010101000010100005028475212001802003720037184433187671001020100002010000200372003711100211091010100001000000006402162219786010000102003820038200382003820038
10024200371500000150061196862510010101000010100005028475212001802003720037184433187671001020100002010000200372003711100211091010100001000000006402162219786010000102003820038200382003820038

Test 3: throughput

Count: 8

Code:

  dup v0.8h, v8.h[1]
  dup v1.8h, v8.h[1]
  dup v2.8h, v8.h[1]
  dup v3.8h, v8.h[1]
  dup v4.8h, v8.h[1]
  dup v5.8h, v8.h[1]
  dup v6.8h, v8.h[1]
  dup v7.8h, v8.h[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)l2 tlb miss data (0b)18191e3f51schedule 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)st unit uop (a7)l1d cache writeback (a8)a9acbranch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfd5map dispatch bubble (d6)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
8020420059150000026729258010810080008100800205006401320200192003820038997769989801202008003220080032200382003811802011009910010080000100022240111511821620035800001002003920039200392003920039
8020420038150000002925801081008000810080020500640132020019200382003899776998980120200800322008003220038200381180201100991001008000010000000111511801620035800001002003920039200392003920039
8020420038150000002925801081008000810080020500640132120019200382003899776998980120200800322008003220038200381180201100991001008000010000000111511801620035800001002003920039200392003920039
8020420038150000002925801081008000810080020500640132020019200382003899776998980120200800322008003220038200381180201100991001008000010000000111511801620035800001002003920039200392003920039
8020420038150000002925801081008000810080020500640132020019200382003899776998980120200800322008003220038200381180201100991001008000010000000111511801620035800001002003920039200392003920039
802042003815000002732925801081008000810080020500640132020019200382003899776998980120200800322008003220038200381180201100991001008000010020100111511801620035800001002003920039200392003920039
8020420038150000062925801081008000810080020500640132020019200382003899776998980120200800322008003220038200381180201100991001008000010000000111511801620035800001002003920039200392003920039
8020420038150000002925801081008000810080020500640132020019200382003899776998980120200800322008003220038200381180201100991001008000010000000111511801620035800001002003920039200392003920039
8020420038150000002925801081008000810080020500640132020019200382003899776998980120200800322008003220038200381180201100991001008000010000000111511801620035800001002003920039200392003920039
80204200381500000212925801081008000810080020500640132020019200382003899776998980120200800322008003220038200381180201100991001008000010000000111511801620035800001002003920039200392003920039

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)03191e1f3f51schedule 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 mispred nonspec (cb)cfd5map dispatch bubble (d6)ddfetch restart (de)e0eaeb? simd retires (ee)? int retires (ef)f5f6f7f8fd
8002420050150000392580010108000010800005064000002001920038200389996310018800102080000208000020038200381180021109101080000100000502071635200350080000102003920039200392003920039
8002420038150000392580010108000010800005064000002001920038200389996310018800102080000208000020038200381180021109101080000100000502061635200350080000102003920039200392003920039
8002420038150000392580010108000010800005064000002001920038200389996310018800102080000208000020038200381180021109101080000100000502051653200350080000102003920039200392003920039
8002420038150000392580010108000010800005064000002001920038200389996310018800102080000208000020038200381180021109101080000100000502051654200350080000102003920039200392003920039
8002420038155000392580010108000010800005064000002001920038200389996310018800102080000208000020038200381180021109101080000100000502051635200350080000102003920039200392003920039
8002420038150000392580010108000010800005064000002001920038200389996310018800102080000208000020038200381180021109101080000100000502051635200350080000102003920039200392003920039
80024200381500180392580010108000010800005064000002001920038200389996310018800102080000208000020038200381180021109101080000100000502051653200350080000102003920039200392003920039
8002420038150000392580010108000010800005064000012001920038200389996310018800102080000208000020038200381180021109101080000100000502031653200350080000102003920039200392003920039
8002420038150000392580010108000010800005064000012001920038200389996310018800102080000208000020038200381180021109101080000100000502051636200350080000102003920039200392003920039
8002420038150090392580010108000010800005064000002001920038200389996310018800102080000208000020038200381180021109101080000100000502051655200350080000102003920039200392003920039