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

FRINT32X (scalar, D)

Test 1: uops

Code:

  frint32x 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)03mmu table walk data (08)09l2 tlb miss data (0b)18191e3a3f4e51schedule 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 tlb miss (a1)ld unit uop (a6)l1d cache writeback (a8)acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
1004303723000000061254725100010001000398160030183037303724143289510001000100030373037111001100000000073316222629100030383038303830383038
10043037230000000307254725100010001000398160130183037303724143289510001000100030373037111001100000000073216222629100030383038303830383038
10043037230000000123254725100010001000398160030183037303724143289510001000100030373037111001100000000073216222629100030383038303830383038
10043037240000000147254725100010001000398160130183037303724143289510001000100030373037111001100000000073216222629100030383038303830383038
10043037240000000483254725100010001000398160130183037303724143289510001000100030373037111001100000000073216222629100030383038303830383038
10043037230000000414254725100010001000398160030183037303724143289510001000100030373037111001100000000073216222629100030383038303830383038
10043037230000000105254725100010001000398160030183037303724143289510001000100030373037111001100000000073216222629100030383038303830383038
1004303724000000061254725100010001000398160130183037303724143289510001000100030373037111001100000000073216222629100030383038303830383038
1004303724000000061254725100010001000398160130183037303724143289510001000100030373037111001100000003073216222629100030383038303830383038
1004303723000000061254725100010001000398160130183037303724143289510001000100030373037111001100000000073216222629100030383038303830383038

Test 2: Latency 1->2

Code:

  frint32x 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)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)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)acbranch cond mispred nonspec (c5)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
102043003723200012429547251010010010000100100005004277160130018030037300372826432874510100200100002001000030037300371110201100991001001000010000007101161129633100001003003830038300383003830038
10204300372330006129547251010010010000100100005004277160030018030037300372826432874510100200100002001000030037300371110201100991001001000010000007101161129633100001003003830038300383003830038
10204300372330006129547251010010010000100100005004277160030054030037300372826432874510100200100002001000030037300371110201100991001001000010000007101161129633100001003003830038300383003830038
1020430037233000263029547251010010010000100100005004277160030018030037300372826432874510100200100002001000030037300371110201100991001001000010001007101161129633100001003003830038300383003830038
10204300372330006129547251010010010000100100005004277160030018030037300372826432874510100200100002001000030037300371110201100991001001000010000007101161129633100001003003830038300383003830038
10204300372410006129547251010010010000100100005004277160030018030037300372826432874510100200100002001000030037300371110201100991001001000010000007101161129633100001003003830038300383003830038
10204300372330006129547251010010010000100100005004277160030018030037300372826432874510100200100002001000030037300371110201100991001001000010000007101161129633100001003003830038300383003830038
102043003723300020829547251010010010000100100005004277160030018030037300372826432874510100200100002001000030037300371110201100991001001000010000007101161129633100001003003830038300383003830038
10204300372330006129547251010910010000100100005004277160030018030037300372826432874510100200100002001000030037300371110201100991001001000010000007101161129633100001003003830038300383003830038
102043003723300010329547251010010010000100100005004277160030018030037300372826432874510100200100002001000030037300371110201100991001001000010000007101161129633100001003003830038300383003830038

1000 unrolls and 10 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 cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
10024300372250612954725100101010000101000050427716003001830037300372828632876710010201000020100003003730037111002110910101000010006402162229629010000103003830038300383003830038
1002430037241027182954725100101010000101000050427716003001830037301802829132876710010201000020100003003730037111002110910101000010006402162229629010000103003830038300383003830038
100243003722502082954725100101010000101000050427716003001830037300372828632876710010201000020100003003730037111002110910101000010006402162229629010000103003830038300383003830038
100243003722504832954725100101010000101000050427716003001830037300372828632876710010201000020100003003730037111002110910101000010006402162229629010000103003830038300383003830038
10024300372250842954725100101010000101000050427716003001830037300372828632876710010201000020100003003730037111002110910101000010006402162229629010000103003830038300383003830038
100243003722505072954725100101010000101000050427716003001830037300372828632876710010201000020100003003730037111002110910101000010006402162229629010000103003830038300383003830038
100243003722501052954725100101010000101000050427716003001830037300372828632876710010201000020100003003730037111002110910101000010006402162229629010000103003830038300383003830038
10024300372240612954725100101010000101000050427716003001830037300372828632876710010201001220100003003730037111002110910101000010006402162229629010000103003830038300383003830038
100243003722502502954725100101010000101000050427716003001830037300372828632876710010201000020100003003730037111002110910101000010006402162229629010000103003830038300383003830038
100243003722501052954725100101010000101000050427716003001830037300372828632876710010201000020100003003730037111002110910101000010006402162229629010000103003830038300383003830038

Test 3: throughput

Count: 8

Code:

  frint32x d0, d8
  frint32x d1, d8
  frint32x d2, d8
  frint32x d3, d8
  frint32x d4, d8
  frint32x d5, d8
  frint32x d6, d8
  frint32x 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)03l2 tlb miss instruction (0a)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)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)acc2branch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfmap dispatch bubble (d6)d9ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
80204200611550000302580108100800081008002050064013220020200392003999776999080120200800322008003220039200391180201100991001008000010010011151181600020036800001002004020040200402004020040
80204200391550000302580108100800081008002050064013220020200392003999776999080120200800322008003220039200391180201100991001008000010000011151181600020036800001002004020040200402004020040
8020420039155000018502580108100800081008002050064013220020200392003999776999080120200800322008003220039200391180201100991001008000010010011151181600020036800001002004020040200402004020040
80204200391550000302580108100800081008002050064013220020200392003999776999080120200800322008003220039200391180201100991001008000010000011151181600020036800001002004020040200402004020040
80204200391560000302580108100800081008002050064013220020200392003999776999080120200800322008003220039200391180201100991001008000010000011151181600020036800001002004020040200402004020040
80204200391550000302580108100800081008002050064013220020200392003999776999080120200800322008003220039200391180201100991001008000010000011151181600020036800001002004020040200402004020040
802042003915500006952580108100800081008002050064013220020200392003999776999080120200800322008003220039200391180201100991001008000010000011151181600020036800001002004020040200402004020040
80204200391550000302580108100800081008002050064013220020200392003999776999080120200800322008003220039200391180201100991001008000010000011151181600020036800001002004020040200402004020040
80204200391550000302580108100800081008002050064013220020200392003999776999080120200800322008003220039200391180201100991001008000010000011151181600020036800001002004020040200402004020040
80204200391550000302580108100800081008002050064013220020200392003999776999080120200800322008003220039200391180201100991001008000010013011151181600020036800001002004020040200402004020040

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)l2 tlb miss data (0b)0f1e3f51schedule 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)l1d cache writeback (a8)accfd0d5map dispatch bubble (d6)ddfetch restart (de)e0ea? simd retires (ee)? int retires (ef)f5f6f7f8fd
80024200511550001282258001010800001080000506400000200202003920039999631001980010208000020800002003920039118002110910108000010000950200201671020036080000102004020040200402004020040
80024200391550000822580010108000010800005064000002002020039200399996310019800102080000208000020039200391180021109101080000100000502007168520036080000102004020040200402004020040
800242003915600004025800101080000108000050640000020020200392018999963100198001020800002080000200392003911800211091010800001000365020016169420036080000102004020040200402004020040
80024200391610000402580010108000010800005064000012002020039200399996310019804322080000208000020039200391180021109101080000100000502005169920036080000102004020040200402004020040
8002420039155000040258001010800001080000506400001200202003920039999631001980010208000020800002003920039118002110910108000010000050200816121020036080000102004020040200402004020040
800242003915500006825800101080000108000050640000120020200392003999963100198001020800002080000200392003911800211091010800001000035020013168620036080000102004020040200402004020040
80024200391560000402580010108000010800005064000002002020039200399996310019800102080000208000020039200391180021109101080000100000502009166920036080000102004020040200402004020040
80024200391550000402580010108000010800005064000002002020039200399996310019800102080000208000020039200391180021109101080000100000502007165920036080000102004020040200402004020040
800242003915500001052580010108000010800005064000002002020039200399996310019800102080000208000020039200391180021109101080000100000502006165920036080000102004020040200402004020040
80024200391550004624025800101080000108000050640000120020200392003999963100198001020800002080000200392003911800211091010800001000105020071610920036080000102004020040200402004020040