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

ABS (vector, 2D)

Test 1: uops

Code:

  abs v0.2d, v0.2d
  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)03191e3a3f4e51schedule 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)ld unit uop (a6)l1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
100430372300084254725100010001000398160130183037303724143289510001000100030373037111001100000073116112629100030383038303830383038
100430372300061254725100010001000398160030183037303724143289510001000100030373037111001100000073116112629100030383038303830383038
100430372303161254725100010001000398160030183037303724143289510001000100030373037111001100000073116112629100030383038303830383038
100430372200061254725100010001000398160130223037303724143289510001000100030373037111001100000073116112629100030383038303830383038
100430372300082254725100010001000398160130183037303724143289510001000100030373037111001100001073116112629100030383038303830383038
1004303723000103254725100010001000398160030183037303724143289510001000100030373037111001100000073116112629100030383038303830383038
100430372200061254725100010001000398160030183037303724143289510001000100030373037111001100000073116112629100030383038303830383038
100430372300061254725100010001000398160130183037303724143289510001000100030373037111001100000073116112629100030383038303830383038
100430372200061254725100010001000398160130183037303724143289510001000100030373037111001100000073116112629100030383038303830383038
100430372300061254725100010001000398160030183037303724143289510001000100030373037111001100000073116112629100030383038303830383038

Test 2: Latency 1->2

Code:

  abs v0.2d, v0.2d
  movi v0.16b, 1
  movi v1.16b, 2

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code): 3.0037

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 miss (a1)l1d cache writeback (a8)a9acbranch cond mispred nonspec (c5)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
102043003722506129547251010010010000100100005004277160030018300373003728264328745101002001000020010000300373003711102011009910010010000100000007101161129633100001003003830038300383003830038
102043003722506129547251010010010000100100005004277160130018300373003728264328745101002001000020010000300373003711102011009910010010000100000007101161129633100001003003830038300383003830038
102043003722506129547251010010010000100100005004277160130018300373003728264328745101002001000020010000300373003711102011009910010010000100000007101161129633100001003003830038300383003830038
102043003722406129547251010010010000100100005004277160030018300373003728264328745101002001000020010000300373003711102011009910010010000100000007101161129633100001003003830038300383003830038
102043003722406129547251010010010000100100005004277160030018300373003728264328745101002001000020010000300373003711102011009910010010000100000277507101161129669100001003003830038300383003830038
102043006122506129547251010010010000100100005004277160130018300373003728264328745101002001000020010000300373003711102011009910010010000100000007101161129633100001003003830038300383003830038
102043003722506129547251010010010000100100005004277160130018300373003728264328745101002001000020010000300373003711102011009910010010000100000007101161129633100001003003830038300383003830038
102043003722406129547251010010010000100100005004277160130018300373003728264328745101002001000020010000300373003711102011009910010010000100000007101161129633100001003003830038300383003830038
102043003722506129547251010010010000100100005004277160130018300373003728264328745101002001000020010000300373003711102011009910010010000100000007101161129633100001003003830038300383022830038
102043003722506129547251010010010000100100005004277160130018300373003728264328745101002001000020010000300373003711102011009910010010000100000007101161129633100001003003830038300383003830038

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0037

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)60696b6d6emap 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)ld unit uop (a6)st unit uop (a7)l1d cache writeback (a8)a9acc2branch mispred nonspec (cb)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
1002430037225000000612954725100101010000101000050427716013001803003730037282860328767100102010000201000030037300371110021109101010000100000000006402162229629010000103003830038300383003830038
1002430037225000000612954725100101010000101000050427716013001803003730037282860328767100102010000201000030037300371110021109101010000100000000006402162229629010000103003830038300383003830038
1002430037224000000612954725100101010000101000050427716013001803003730037282860328767100102010000201000030037300371110021109101010000100000000006402162229629010000103003830038300383003830038
1002430037225000000612954725100101010000101000050427716013001803003730037282860328767100102010000201000030037300371110021109101010000100000000006402162229629010000103003830038300383003830038
10024300372250000001562954725100101010000101000050427716013001803003730037282860328767100102010000201000030037300371110021109101010000100000000006402162229629010000103003830038300383003830038
1002430037225000000612954725100101010000101000055427716003001803003730037282860328767100102010000201000030037300371110021109101010000100000000006402162229629010000103003830038300383003830038
1002430037224000000612954725100101010000101000050427716013001803003730037282860328767100102010000201000030037300371110021109101010000100000000006402162229629010000103003830038300383003830038
10024300372250000002322954725100101010000101000050427716013001803003730037282860328767100102010000201000030037300371110021109101010000100000000006402162229691010000103003830038300383003830038
1002430037225000000612954725100101010000101000050427716013001803003730037282860328767100102010000201000030037300371110021109101010000100000000006402162229629010000103003830038300383003830038
1002430037225000000612954725100101010000101000050427716013001803003730037282860328767100102010000201000030037300371110021109101010000100000000006402162229629010000103003830038300383003830038

Test 3: throughput

Count: 8

Code:

  abs v0.2d, v8.2d
  abs v1.2d, v8.2d
  abs v2.2d, v8.2d
  abs v3.2d, v8.2d
  abs v4.2d, v8.2d
  abs v5.2d, v8.2d
  abs v6.2d, v8.2d
  abs v7.2d, v8.2d
  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)1e1f3f51schedule 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 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
8020420059150000302580108100800081008002050064013202002020039200399977069990801202008003220080032200392003911802011009910010080000100000011151182163320036800001002004020040200402004020040
8020420039150000302580108100800081008002050064013202002020039200399977069990801202008003220080032200392003911802011009910010080000100000011151183163420036800001002004020040200402004020040
8020420039150000302580108100800081008002050064013212002020039200399977069990801202008003220080032200392003911802011009910010080000100000011151184164520036800001002004020040200402004020040
8020420039150000512580108100800081008002050064013202002020039200399977069990801202008003220080032200392003911802011009910010080000100000011151183163420036800001002004020040200402004020040
8020420039150000302580108100800081008002050064013212002020039200399977069990801202008003220080032200392003911802011009910010080000100000011151183163420036800001002004020040200402004020040
8020420039150000302580108100800081008002050064013202002020039200399977069990801202008003220080032200392003911802011009910010080000100000011151183164320036800001002004020040200402004020040
80204200391500138176302580108100800081008002050064013202002020039200399977069990801202008003220080032200392003911802011009910010080000100000011151184163420036800001002004020040200402004020040
8020420039150000302580108100800081008002050064013202002020039200399977069990801202008003220080032200392003911802011009910010080000100000011151183163420036800001002004020040200402004020040
8020420039150000302580108100800081008002050064013212002020039200399977069990801202008003220080032200392003911802011009910010080000100000311151183163420036800001002004020040200402004020040
8020420039150000302580108100800081008002050064013202002020039200399977069990801202008003220080032200392003911802011009910010080000100000011151184164320036800001002004020040200402004020040

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)031e1f3f51schedule 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 mispred nonspec (cb)cfd5map dispatch bubble (d6)ddfetch restart (de)e0ea? simd retires (ee)? int retires (ef)f5f6f7f8fd
80024200501500084258001010800001080000506400000200202003920039999631001980010208000020800002003920039118002110910108000010000502051666200361580000102004020040200402004020040
8002420039150004025800101080000108000050640000020020200392003999963100198001020800002080000200392003911800211091010800001000050203163420036080000102004020040200402004020040
8002420039150004025800101080000108000050640000120020200392003999963100198001020800002080000200392003911800211091010800001006050203166420036080000102004020040200402004020040
8002420039150004625800101080000108000050640000120020200392003999963100198001020800002080000200392003911800211091010800001003150204164420036080000102004020040200402004020040
8002420039150004025800101080000108000050640000120020200392003999963100198001020800002080000200392003911800211091010800001003050204166420036080000102004020040200402004020040
8002420039150004025800101080000108000050640000120020200392003999963100198001020800002080000200392003911800211091010800001003050206166420036080000102004020040200402004020040
80024200391501204625800101080000108000050640000020020200392003999963100198001020800002080105201472003911800211091010800001010050207166420036080000102009320092200932009120040
800242003915000114425801081080000108000050640000020020200392003999963100198001020800002080000200392003911800211091010800001000050204163420036080000102004020040200402004020040
800242003915090125625800101080000108000050640000120020200392003999963100198001020800002080000200392003911800211091010800001000050206164720036080000102004020040200402004020040
8002420039150008225800101080000108000050640000120020200392003999963100198001020800002080000200392003911800211091010800001000050206166420036080000102004020040200402004020040