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

FRINT32Z (vector, 2D)

Test 1: uops

Code:

  frint32z 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)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 tlb access (a0)l1d cache writeback (a8)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
100430372496125472510001000100039816013018303730372414328951000100010003037303711100110000073216112629100030383038303830383038
100430372306125472510001000100039816013018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
100430372408225472510001000100039816013018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
100430372406125472510001000100039816013018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
1004303724010325472510001000100039816013018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
1004303724126125472510001000100039816013018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
100430372466125472510001000100039816013018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
100430372406125472510001000100039816013018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
10043037242106125472510001000100039816013018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
10043037242316125472510001000100039816013018303730372414328951000100010003037303711100110000073116112629100030383038303830383038

Test 2: Latency 1->2

Code:

  frint32z 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)03181e3f4e51schedule 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)acbranch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
10204300372250061295472510100100100001001000050042771603001830037300372827162874110100200100082001000830037300371110201100991001001000010045121117170160029646100001003003830038300383003830038
1020430037225006129547251010010010000100100005004277160300183003730037282716287411010020010008200100083003730037111020110099100100100001004601117180160029645100001003003830038300383003830038
1020430037224006129547251010010010000100100005004277160300183003730037282716287401010020010008200100083003730037111020110099100100100001004901117170160029646100001003003830038300383003830038
1020430037225006129547251010010010000100100005004277160300183003730037282717287401010020010008200101803003730037111020110099100100100001004401117170160029645100001003003830038300383003830038
1020430037225106129547251010010010000100100005004277160300183003730037282716287411010020010008200100083003730037111020110099100100100001004301117170160029645100001003003830038300383003830038
10204300372250061295472510100100100001001000050042771603001830037300372827172874110100200100082001000830037300371110201100991001001000010049121117170160029645100001003003830038300383003830038
1020430037225006129547251010010010000100100005004277160300183003730037282716287411010020010008200100083003730037111020110099100100100001004001117180160029646100001003003830038300383003830038
1020430037225006129547251010010010000100100005004277160300183003730037282717287401010020010008200100083003730037111020110099100100100001003901117180160029646100001003003830038300383003830038
1020430037225006129547251010010010000100100005004277160300183003730037282716287411010020010008200100083003730037111020110099100100100001003831117180160029645100001003003830038300383003830038
1020430037225006129547251010010010000100100005004277160300183003730037282717287411010020010008200100083003730037111020110099100100100001003501117170160029645100001003003830038300383003830038

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0037

retire uop (01)cycle (02)03191e1f3f4e51schedule 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 access (a0)ld unit uop (a6)l1d cache writeback (a8)a9acc2branch mispred nonspec (cb)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)ec? simd retires (ee)? int retires (ef)f5f6f7f8fd
100243003723303901032954725100101010000101000050427716013001830037300372828632876710010201000020100003003730037111002110910101000010000000064021622296290010000103003830038300383003830038
1002430037232000612954725100101010000101000050427716013001830037300372828632876710010201000020100003003730037111002110910101000010000000064021622296290010000103003830038300383003830038
10024300372410001452954725100101010000101000050427716013001830037300372828632876710010201000020100003003730037111002110910101000010000000064021622296290010000103003830038300383003830038
10024300372320007682954725100101010000101000050427716003001830037300372828632876710010201000020100003003730037111002110910101000010001000064021622296290010000103003830038300383003830038
1002430037233000612954725100101010000101000050427716013001830037300372828632876710010201000020100003003730037111002110910101000010000000064021622296290010000103003830038300383003830038
1002430037233000612954725100101010000101000050427716003001830037300372828632876710010201000020100003003730037111002110910101000010000000064021622296290010000103003830038300383003830038
1002430037232000612954725100101010000101000050427716003001830037300372828632876710010201000020100003003730037111002110910101000010000000064021622296290010000103003830038300383003830038
1002430037233000612954725100101010000101000050427716013001830037300372828632876710010201000020100003003730037111002110910101000010000000064021622296290010000103003830038300383003830038
1002430037233000612954725100101010000101000050427716003001830037300372828632876710010201000020100003003730037111002110910101000010000000064021622296290010000103003830038300383003830038
1002430037233000612954725100101010000101000050427716013001830037300372828632876710010201000020100003003730037111002110910101000010000000064021622296290010000103003830038300383003830038

Test 3: throughput

Count: 8

Code:

  frint32z v0.2d, v8.2d
  frint32z v1.2d, v8.2d
  frint32z v2.2d, v8.2d
  frint32z v3.2d, v8.2d
  frint32z v4.2d, v8.2d
  frint32z v5.2d, v8.2d
  frint32z v6.2d, v8.2d
  frint32z 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)03l1i tlb fill (04)18191e1f3a3f51schedule 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 access (a0)l1d tlb miss (a1)ld unit uop (a6)st unit uop (a7)l1d cache writeback (a8)acc2branch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
802042003915600000254258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100020000011151227399820036800001002004020040200402004020040
802042003915510000254258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100000000011151229169920036800001002004020040200402004020040
80204200391561000025425801081008000810080020500640132020020200392003999776999080120200800322008003220039200391180201100991001008000010000000001115122916101020036800001002004020040200402004020040
8020420039155100002542580108100800081008002050064013202002020039200399977699908012020080032200800322003920039118020110099100100800001000000000111512210169920036800001002004020040200402004020040
802042003916110060254258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100000000011151229529920036800001002004020040200402004020040
802042003915610000254258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100200003011151229169920036800001002004020040200402004020040
802042003915510000254258010810080008100800205006401320200202003920039997769990801202008003220080032200392025311802011009910010080000100000000011151229169420036800001002004020040200402004020040
802042003915510000254258010810080008100800205006409760200202003920039997769990801202008003220080032200392003911802011009910010080000100000000011151226166620036800001002004020040200402004020040
8020420039155100002646258010810080008100800205006401321200202003920039997769990801202008003220080032200392003911802011009910010080000100000000011151229168820036800001002004020040200402004020040
80204200391561000025425801081008000810080020500640132120020200392003999776999080120200800322008003220039200391180201100991001008000010000000001115122816101020036800001002004020040200402004020040

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)03l2 tlb miss data (0b)1e3f51schedule 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)5f60696d6emap 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)ld unit uop (a6)l1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
8002420039156094025803991080000108000050640000012002020039200399996310019800102080000208000020039200391180021109101080000100221415020716642003680000102004020040200402004020040
800242003915500402580010108000010800005064000011200202003920039999631001980010208000020800002003920039118002110910108000010000845020516562003680000102004020040200402004020040
8002420039155004025800101080000108000050640000002002020039200399996310019800102080000208000020039200391180021109101080000100001025020616652003680000102004020040200402004020040
800242003915500402580010108000010800005064000000200202003920039999631001980010208000020800002003920039118002110910108000010000245020616642003680000102004020040200402004020040
80024200391550040258001010800001080000506400000120020200392003999963100198001020800002080000200392003911800211091010800001000005020616742003680000102019720103200402004020040
8002420039155004025800101080000108020950640000012002020039200399996310019800102080000208000020039200391180021109101080000100001145020616752003680000102004020040200402004020040
800242003915500110258030410800001080000506400000120020200392003999963100198001020800002080000200392003911800211091010800001000305020616742003680000102004020040200402004020040
80024200391560063025800101080000108000050640000002002020039200399996310019800102080210208000020039200391180021109101080000100001475020416462003680000102004020040200402004020040
8002420039156004025800101080000108000050640000002002020039200399996310019800102080000208000020039200391180021109101080000100001115020716642003680000102004020040200402004020040
8002420039155064025800101080000108000050640000002002020039200399996310019800102080000208000020039200391180021109101080000100016285020516752003680000102014620093201022009620040