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, B)

Test 1: uops

Code:

  dup b0, 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)696d6emap 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)ld unit uop (a6)l1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
100420371506116862510001000100026452120182037203715713189510001000100020372037111001100000073116111786100020382038203820382038
100420371506116862510001000100026452120182037203715713189510001000100020372037111001100000073116111786100020382038203820382038
1004203715010516862510001000100026452120182037203715713189510001000100020372037111001100001073116111786100020382038203820382038
100420371506116862510001000100026452120182037203715713189510001000100020372037111001100000073116111786100020382038203820382038
100420371506116862510001000100026452120182037203715713189510001000100020372037111001100000073116111786100020382038203820382038
100420371506116862510001000100026452120182037203715713189510001000100020372037111001100000073116111786100020382086203820382038
100420371506116862510001000100026452120182037203715713189510001000100020372037111001100000073116111786100020382038203820382038
100420371506116862510001000100026452120182037203715713189510001000100020372037111001100000073116111786100020382038203820382038
100420371506116862510001000100026452120182037203715713189510001000100020372037111001100000073116111786100020382038203820382038
100420371506116862510001000100026452120182037203715713189510001000100020372037111001100000073116111786100020382038203820382038

Test 2: Latency 1->2

Code:

  dup b0, 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)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)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)9fld unit uop (a6)l1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
1020420037150082419686251010010010000100100005002847521120018200372003718421031874510100200100002001000020037200371110201100991001001000010000071011611197910100001002003820038200382008420038
102042003715036119686251010010010000100100005002847521020018200372003718421031874510100200100002001000020037200371110201100991001001000010000071011611197910100001002003820038200382003820038
102042003715006119686251010010010000100100005002847521020018200372003718421031874510100200100002001000020037200371110201100991001001000010000071011611197910100001002003820038200382003820038
102042003715006119686251010010010000100100005002847521020018200372003718421031874510100200100002001000020037200371110201100991001001000010000071011611197910100001002003820038200382003820038
102042003715006119686251010010010000100100005002847521120018200372003718421031874510100200100002001000020037200371110201100991001001000010000071011611197910100001002003820038200382003820038
102042003715006119686251010010010000100100005002847521120018200372003718421031874510100200100002001000020037200371110201100991001001000010000071011611197910100001002003820038200382003820038
1020420037150012419686251010010010000100100005002847521120018200372003718421031874510100200100002001000020037200371110201100991001001000010000071011611197910100001002003820038200382003820038
1020420037150010319686251010010010000100100005002847521120018200372003718421031874510100200100002001000020037200371110201100991001001000010000071011611197910100001002003820038200382003820038
102042003715006119686251010010010000100100005002847521120018200372003718421031874510100200100002001000020037200371110201100991001001000010000071011611197910100001002003820038200382003820038
102042003715006119686251010010010000100100005002847521120018200372003718421031874510100200100002001000020037200371110201100991001001000010000071011611197910100001002003820038200382003820038

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0037

retire uop (01)cycle (02)03091e3f4e51schedule 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
1002420037150206119686251001010100001010000502847521200182003720037184433187671001020100002010000200372003711100211091010100001000640616221978610000102003820038200382003820038
1002420037150006119686251001010100001010000502847521200652003720037184433187671001020100002010000200372003711100211091010100001000640216241978610000102003820038200382003820038
100242003715003366119686251001010100001010000502847521200182003720037184433187671001020100002010000200372003711100211091010100001000640216221978610000102003820038200382003820038
10024200371500966119686251001010100001010000502847521200182003720037184433187671001020100002010000200372003711100211091010100001000640216221978610000102003820038200382003820038
1002420037150006119686251001010100001010000502847521200182003720037184433187671001020100002010000200372003711100211091010100001000640216221978610000102003820038200382003820038
1002420037150006119686251001010100001010000502847521200182003720037184433187671001020100002010000200372003711100211091010100001000640216221978610000102003820038200382003820038
10024200371500996119686251001010100001010000502847521200182003720037184433187671001020100002010000200372003711100211091010100001000640216221978610000102003820038200382003820038
10024200371500666119686251001010100001010000502847521200182003720037184433187671001020100002010000200372003711100211091010100001000640216221978610000102003820038200382003820038
10024200371500053619686251001010100001010000502847521200182003720037184433187671001020100002010000200372003711100211091010100001000640216221978610000102003820038200382003820038
1002420037150096119686251001010100001010000502847521200182003720037184433187671001020100002010000200372003711100211091010100001000640216221978610000102003820038200382003820038

Test 3: throughput

Count: 8

Code:

  dup b0, v8.b[1]
  dup b1, v8.b[1]
  dup b2, v8.b[1]
  dup b3, v8.b[1]
  dup b4, v8.b[1]
  dup b5, v8.b[1]
  dup b6, v8.b[1]
  dup b7, 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)031e3a3f51schedule 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)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 cache writeback (a8)acbranch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfd5map dispatch bubble (d6)dde0? simd retires (ee)? int retires (ef)f5f6f7f8fd
802042005015000292580108100800081008002050064013202001920038200389977069989801202008003220080032200382003811802011009910010080000100001115118016020035800001002003920039200392003920039
802042003815090292580108100800081008002050064013202001920038200389977069989801202008003220080032200382003811802011009910010080000100001115118016020035800001002003920039200392003920039
802042003815000292580108100800081008002050064013202001920038200389977069989801202008003220080032200382003811802011009910010080000100001115118016020035800001002003920039200392003920039
802042003815000292580108100800081008002050064013202001920038200389977069989801202008003220080032200382003811802011009910010080000100001115118016020035800001002003920039200392003920039
802042003815000292580108100800081008002050064013202001920038200389977069989801202008003220080032200382003811802011009910010080000100001115118016020035800001002003920039200392003920039
8020420038150150292580108100800081008002050064013202001920038200389977069989801202008003220080032200382003811802011009910010080000100001115118016020035800001002003920039200392003920039
802042003815000292580108100800081008002050064013202001920038200389977069989801202008003220080032200382003811802011009910010080000100001115118016020035800001002003920039200392003920039
802042003815000292580108100800081008002050064013202001920038200389977069989801202008003220080032200382003811802011009910010080000100001115118016020035800001002003920039200392003920039
802042003815000292580108100800081008002050064013202001920038200389977069989801202008003220080128200382003811802011009910010080000100001115118016120035800001002003920039200392003920039
802042003815000292580108100800081008002050064013202001920038200389977069989801202008003220080032200382003811802011009910010080000100001115118016020035800001002003920039200392003920039

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)031e3f51schedule 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 cache writeback (a8)acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
8002420039150039258001010800001080000506400001200190200382003899963100188001020800002080000200382003811800211091010800001007305020216222003580000102003920039200392003920039
8002420038150039258001010800001080000506400001200190200382003899963100188001020800002080000200382003811800211091010800001000005020416442003580000102003920039200392003920039
80024200381500392580010108000010800005064000002001902003820038999631001880010208000020800002003820038118002210910108000010048005020216322003580000102003920039200392003920039
8002420038150039258001010800001080000506400000200190200382003899963100188001020800002080000200382003811800211091010800001000005020416242003580000102003920039200392003920039
8002420038151039258001010800001080000506400000200190200382003899963100188001020800002080000200382003811800211091010800001000005020316232003580000102003920039200392003920039
8002420038150039258001010800001080000506400000200190200382003899963100188001020800002080000200382003811800211091010800001000305020216222003580000102003920039200392003920039
8002420038150039258001010800001080000506400000200190200382003899963100188001020800002080000200382003811800211091010800001000605020416442003580000102003920039200392003920039
80024200381500392580010108000010800005064000002001902003820038999631001880010208000020800002003820038118002110910108000010007205020416232003580000102003920039200392003920039
8002420038150039258001010800001080000506400000200190200382003899963100188001020800002080000200382003811800211091010800001000005020216222003580000102003920039200392003920039
8002420038150039258001010800001080000506400000200190200382003899963100188001020800002080000200382003811800211091010800001000005020416222003580000102003920039200392003920039