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, D)

Test 1: uops

Code:

  abs d0, d0
  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)03191e1f3f4e51schedule 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)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
10043037220006125472510001000100039816013018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
10043037230006125472510001000100039816013018308530372414328951000100010003037303711100110000073116112629100030383038303830383038
10043037230006125472510001000100039816013018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
10043037220006125472510001000100039816013018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
10043037231906125472510001000100039816013018303730372414328951000100010003037303711100110000073116112658100030383038303830383038
10043037220006125472510001000100039816013018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
10043037220006125472510001000100039816013018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
10043037230006125472510001000100039816013018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
10043037230006125472510001000100039816013018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
10043037220006125472510001000100039816013018303730372414328951000100010003037303711100110000073116112629100030383038303830383038

Test 2: Latency 1->2

Code:

  abs d0, d0
  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)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)l1d cache writeback (a8)acc2branch cond mispred nonspec (c5)cdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
102043003722504292954725101001001000010010000500427716013001830037300372826403287451010020010000200100003003730037111020110099100100100001000000007102162229633100001003003830038300383003830038
10204300372250612954725101001001000010010000500427716003001830037300372826403287451010020010000200100003003730037111020110099100100100001000000007102162229633100001003003830038300383003830038
10205300372240612954725101001001000010010149500427716003001830037300372826403287451010020010000200100003003730037111020110099100100100001000000007102162229633100001003003830038300383003830038
10204300372240612954725101141001000810010000500427716003001830037300372826473287451010020010000200100003003730037111020110099100100100001000000007102162229633100001003003830038300383003830038
1020430037225018192954725101001001000010010000500427716003001830037300372826403287451010020010000200100003003730037111020110099100100100001000000007102162229633100001003003830038300383003830038
10204300372240612954725101001001000010010000500427716003001830037300372826403287451010020010000200100003003730037111020110099100100100001000000007102162229633100001003003830038300383003830038
10204300372250148529547251010010010000100100005824277160030018300373003728264032874510100200100002001000030037300371110201100991001001000010000180007102162229633100001003003830038300383003830038
10204300372250612954725101001001000010010000500427716013001830037300372826403287451010020010000200100003003730037111020110099100100100001000000007102162229633100001003003830038300383003830038
10204300372250612954743101001001000010010000500427716003001830037300372826403287451010020010000200100003003730037111020110099100100100001000000007102162229633100001003003830038300383003830038
10205300372250612954725101001001000010010000500427716003001830037300372826403287451010020010000200100003003730037111020110099100100100001000100007102162229633100001003003830038300383003830038

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0037

retire uop (01)cycle (02)031e1f3f4e51schedule 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 cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
1002430037225002060295472510010101000010100005042771601300180300373003728286032876710010201000020100003003730037111002110910101000010006402162229629010000103003830038300383003830038
1002430037225001161295472510010101000010100005042771601300180300373003728286032876710010201000020100003003730037111002110910101000010006402162229629010000103003830038300383003830038
1002430037225001189295472510010101000010100005042771601300180300373003728286032876710010201000020100003003730037111002110910101000010006402162229629010000103003830038300383003830038
10024300372250061295472510010101000010100005042771601300180300373003728286032876710010201000020100003003730037111002110910101000010006402162229629010000103022830038300383003830038
1002430037225001786295472510010101000010100005042771601300180300373003728286032876710010201000020100003003730037111002110910101000010006402162229629010000103003830038300383003830038
1002430037225001212295472510010101000010100005042771600300180300373003728286032876710010201000020100003003730037111002110910101000010006402162229629010000103003830038300383003830038
10024300372250061295472510010101000010100005042771600300180300373003728286732876710010201000020100003003730037111002110910101000010006402162229629010000103003830038300383003830038
1002430037225001987295472510010101000010100005042771600300180300373003728286032876710010201000020100003003730037111002110910101000010006402162229629010000103003830038300383003830038
10024300372250881932295472510010101000010100005042771600300180300373003728286032876710010201000020100003003730037111002110910101000010006402162229629010000103003830038300383013330038
100243003722500886295472510010101000010100005042771601300180300373003728286032878610010201000020100003003730037111002110910101000010006402162229629010000103003830038300383003830038

Test 3: throughput

Count: 8

Code:

  abs d0, d8
  abs d1, d8
  abs d2, d8
  abs d3, d8
  abs d4, d8
  abs d5, d8
  abs d6, d8
  abs d7, d8
  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)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)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
802042005815105472580108100800081008002050064013212002020039200399977699908012020080032200800322003920039118020110099100100800001000011151180160020036800001002004020040200402004020040
80204200391500302580108100800081008002050064013212002020039200399977699908012020080032200800322003920039118020110099100100800001000011151180160020036800001002004020040200402004020040
80204200391500302580108100800081008002050064013212002020039200899977699908012020080032200800322003920039118020110099100100800001000011151180160020036800001002004020040200402004020040
80204200391500532580108100800081008002050064013212002020039200399977699908012020080032200800322003920039118020110099100100800001000011151180160020036800001002004020040200402004020040
80204200391500302580108100800081008002050064013212002020039200399977699908012020080032200800322003920039118020110099100100800001000011151180160020036800001002004020040200402004020040
802042003915003025801081008000810080020500640132120020200392003999771299908012020080032200800322003920039118020110099100100800001000011151180160020036800001002004020040200402004020040
80204200391500302580108100800081008002050064013212002020039200399977699908012020080032200800322003920039118020110099100100800001002011151180160020036800001002004020091200402004020040
80204200391500302580108100800081008002050064013212002020039200399977699908012020080032200800322003920039118020110099100100800001002011151180160020036800001002004020040200402004020040
802042003915008992580108100800081008002050064013212002020039200399977699908012020080032200800322003920039118020110099100100800001000011151180160020036800001002004020040200402004020040
802042003915001142580108100800081008002050064013212002020039200399977699908012020080032200800322003920039118020110099100100800001001011151180160020036800001002004020040200402004020040

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)03mmu table walk data (08)181e3f51schedule 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)cdcfd5map dispatch bubble (d6)dbddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
800242005015000040258001010800001080000506400002002020039200399996310019800102080000208000020039200391180021109101080000100050203160112008680000102004020040200402004020040
800242003915000082258001010800001080000506400002002020039200399996310019801142080000208000020039200391180021109101080000100050201160112003680000102004020040200402004020040
800242003915000061258001010800001080000506400002002020039200399996310019800102080000208000020039200391180021109101080000100050201160112003680000102004020040200402004020040
8002420039150002740258001010800001080000506400002002020039200399996310019800102080000208000020039200391180021109101080000100050201160112003680000102004020040200402008920040
800242003915000082778039610800001080319506400002002020039200399996310019800102080000208000020039200391180021109101080000100050201160112003680000102004020040200402004020040
800242003915000040258001010800001080000506400002002020039200399996310019800102080000208000020039200391180021109101080000100050201160112003680000102004020040200402004020040
800242003915000061258001010800001080000506400002002020039200399996310019800102080107208000020039200391180021109101080000100050201160112003680000102004020040200402004020040
80024200391500005102258001010800001080000506400002002020039200399996310019800102080000208000020039200391180021109101080000100050201160112003680000102004020040200402004020040
800242003915000040258001010800001080000506400002002020039200399996310019800102080000208000020039200391180021109101080000100050201160112003680000102004020040200402004020040
800242003915000040258001010800001080000506400002002020039200399996310019800102080000208000020039200391180021109101080000100050201160112003680000102004020040200402004020040