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

NEG (vector, 4S)

Test 1: uops

Code:

  neg v0.4s, v0.4s
  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
100420371606116862510001000100026452102018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
100420371566116862510001000100026452102018203720371571318951000100010002037203711100110000973116111786100020382038203820382038
1004203715061168625100010001000264521020182037203715713189510001000100020372037111001100001273116111786100020382038203820382038
100420371506116862510001000100026452102018203720371571318951000100010002037203711100110000373116111786100020382038203820382038
100420371606116862510001000100026452102018203720371571318951000100010002037203711100110000073117111786100020382038203820382038
10042037151261168625100010001000264521020182037203715713189510001000100020372037111001100003673116111786100020382038203820382038
1004203715061168625100010001000264521020182037203715713189510001000100020372037111001100001273116111786100020382038203820382038
1004203715061168625100010001000264521020182037203715713189510001000100020372037111001100002173116111786100020382038203820382038
100420371506116862510001000100026452102018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
100420371506116862510001000100026452102018203720371571318951000100010002037203711100110000073116111786100020382038203820382038

Test 2: Latency 1->2

Code:

  neg v0.4s, v0.4s
  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)031e1f3a3f4e51schedule 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)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 tlb access (a0)l1d tlb miss (a1)l1d cache writeback (a8)acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
102042003715000056719686251010010010000100100005002847521200182003720037184210318745101002001000020010000200372003711102011009910010010000100000007101161119791100001002003820038200382003820038
10204200371500006119686251010010010000100100005002847521200182003720037184210318745101002001000020010000200372003711102011009910010010000100001307101161119791100001002003820038200382003820038
10204200371500006119686251010010010000100100005002847521200182003720037184210318745101002001000020010000200372003711102011009910010010000100000307101161119791100001002003820038200382003820038
10204200371500006119686251010010010000100100005002847521200182003720037184210318745101002001000020010000200372003711102011009910010010000100001007101161119791100001002003820038200382003820038
102042003715000012419686251010010010000100100005002847521200182003720037184210318745101002001000020010000200372003711102011009910010010000100000007101161119791100001002003820038200382003820038
102042003715000014719686251010010010000100100005002847521200182003720037184210318745101002001000020010000200372003711102011009910010010000100003214407101161119791100001002003820038200382003820038
10204200371500006119686251010010010000100100005002847521200182003720037184210318745101002001000020010000200372003711102011009910010010000100003917707101161119791100001002003820038200382003820038
10204200371500006119686251010010010000100100005002847521200182003720037184210318745101002001000020010000200372003711102011009910010010000100000007101161119791100001002003820038200382003820038
10204200371500006119686251010010010000100100005002847521200182003720037184210318745101002001000020010000200372003711102011009910010010000100000307101161119791100001002003820038200382003820038
10204200371500006119686251010010010000100100005002847521200182003720037184210318745101002001000020010000200372003711102011009910010010000100000007101161119791100001002003820038200382003820038

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0037

retire uop (01)cycle (02)0318191e3f4e51schedule 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 miss (a1)l1d cache writeback (a8)acbranch cond mispred nonspec (c5)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
10024200371500002351968625100101010000101000050284752120018200372003718443318767100102010000201000020037200371110021109101010000100000640216221978610000102003820038200382003820038
1002420037150000611968625100101010000101000050284752120018200372003718443318767100102010000201000020037200371110021109101010000100000640216221978610000102003820038200382003820038
1002420037150000611968625100101010000101000050284752120018200372003718443318767100102010000201000020037200371110021109101010000100100640216221978610000102003820038200382003820038
1002420037155000109719686251001010100001010000502847521200182003720037184433187671001020100002010000200372003711100211091010100001002030640216221978610000102003820038200382003820038
1002420037150000611968625100101010000101000050284752120018200372003718443318767100102010000201000020037200371110021109101010000100000640216221978610000102003820038200382003820038
1002420037150000611968625100101010000101000050284752120018200372003718443318767100102010000201000020037200371110021109101010000100000640216221978610000102003820038200382003820038
1002420037150000611968625100101010000101000050284752120018200372003718443318767100102010000201000020037200371110021109101010000100000640216221978610000102003820038200382003820038
10024200371500006119686251001010100001010000502847521200182003720037184433187671001020100002010000200372003711100211091010100001003400640216221978610000102003820038200382003820038
1002420037150110611968625100101010000101000050284752120018200832008318447318767100102010000201000020037200371110021109101010000100000640216221978610000102003820038200382003820038
1002420037150000611968625100101010000101000050284752120018200372003718443318767100102010000201000020037200371110021109101010000100000640216221978610000102003820038200382003820038

Test 3: throughput

Count: 8

Code:

  neg v0.4s, v8.4s
  neg v1.4s, v8.4s
  neg v2.4s, v8.4s
  neg v3.4s, v8.4s
  neg v4.4s, v8.4s
  neg v5.4s, v8.4s
  neg v6.4s, v8.4s
  neg v7.4s, v8.4s
  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)03l2 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 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
80204200571500000292580108100800081008002050064013202001920038200389977699898012020080032200800322003820038118020110099100100800001000011151182160020035800001002003920039200392003920039
80204200381500120292580108100800081008002050064013212001920038200389977699898012020080032202800322003820038118020110099100100800001000011151180160020035800001002003920039200392003920039
802042003815500007352580108100800081008002050064013212001920038200389977699898020820080032200800322003820038118020110099100100800001000011151180160020035800001002003920039200392003920039
80204200381500000762580108100800081008002050064013212001920038200389977699898012020080032200800322003820038118020110099100100800001000011151180160020035800001002003920039200392003920039
80204200381500000292580108100800081008002050064013212001920038200389977699898012020080032200800322003820038118020110099100100800001000011151180160020035800001002003920039200392003920039
8020420038149000010962580108100800081008002050064013212001920038200389977699898012020080032200800322003820038118020110099100100800001000011151180160020035800001002003920039200392003920039
80204200381500000712580108100800081008002050064013212001920038200389977699898012020080032200800322003820038118020110099100100800001000011151180160020035800001002003920039200392003920039
8020420038150000198732580108100800081008002050064013212001920038200389977699898012020080032200800322003820038118020110099100100800001000011151180160020035800001002003920039200392003920039
802042003815000002925801081008000810080020500640132120019200382003899776998980120200800322008003220038200381180201100991001008000010060311151180160020035800001002003920039200392003920039
802042003815000024292580108100800081008002050064013212001920038200389977699898012020080032200800322003820038118020110099100100800001000011151180160020035800001002003920039200392003920039

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)031e1f3a3f51schedule 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)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
8002420040150000632258001010800001080000506400001200192003820038999631001880010208000020800002003820038118002110910108000010005020116112003580000102003920039200392003920039
800242003815000039258001010800001080000506400000200192003820038999631001880010208000020800002003820038118002110910108000010005020116112003580000102003920039200392003920039
8002420038150000609258001010800001080000506400001200192003820038999631001880010208000020800002003820038118002110910108000010005020116112003580000102009720039200392003920039
8002420038150000515258001010800001080000506400000200192003820038999631001880010208000020800002003820038118002110910108000010005020116112003580000102003920039200392003920039
800242003815000039258001010800001080000506400001200192003820038999631001880010208000020800002003820038118002110910108000010005020116112003580000102003920039200392003920039
800242003815000039258001010800001080000506400001200192003820038999631001880010208000020800002003820038118002110910108000010005020116112003580000102003920039200392003920039
80024200381500014162580010108000010800005064000002001920038200389996310018800102080000208000020038200381180021109101080000100125020116112003580000102003920039200392003920039
800242003815000039258001010800001080000506400000200192003820038999631001880010208000020800002003820038118002110910108000010005020116112003580000102003920039200392003920039
800242003815000039258001010800001080000506400001200192003820038999631001880010208000020800002003820038118002110910108000010305020116112003580000102003920039200392003920039
8002420038150000812580010108000010800005064000012001920038200389996221001880010208000020800002003820038118002110910108000010005020116112003580000102003920039200392003920039