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, 2S)

Test 1: uops

Code:

  frint32z v0.2s, v0.2s
  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)l1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
10043037230612547251000100010003981603018303730372414328951000100010003037303711100110000075216222626100030383038303830383038
10043037230612547251000100010003981603018303730372414328951000100010003037303711100110000073216212629100030383038303830383038
1004303724121682547251000100010003981603018303730372414328951000100010003037303711100110001075216222626100030383038303830383038
10043037230612547251000100010003981603018303730372413328951000100010003037303711100110000073116222629100030383038303830383038
10043037240612547251000100010003981603018303730372414328951000100010003037303711100110000073116222629100030383038303830383038
100430372312612547251000100010003981603018303730372413328951000100010003037303711100110000073116222626100030383038303830383038
100430372407382547251000100010003981603018303730372413328951000100010003037303711100110000073216112629100030383038303830383038
100430372301562547251000100010003981603018303730372414328951000100010003037303711100110000073116122626100030383038303830383038
10043037230612547251000100010003981603018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
10043037240612547251000100010003981603018303730372414328951000100010003037303711100110000073216112626100030383038303830383038

Test 2: Latency 1->2

Code:

  frint32z v0.2s, v0.2s
  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)03l2 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)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 tlb access (a0)l1d tlb miss (a1)l1d cache writeback (a8)a9acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
10204300372330000061295472510100100100001001000050042771603001830037300372826432874510100200100002001000030037300371110201100991001001000010000000071011611296330100001003003830038300383003830038
10204300372330000085295472510100100100001001000050042771603001830037300372826432874510100200100002001000030037300371110201100991001001000010000000071011611296330100001003003830038300383003830038
102043003723300012061295472510100100100001001000050042771603001830037300372826432874510100200100002001000030037300371110201100991001001000010000000071011611296330100001003003830038300383003830038
10204300372320000061295472510100100100001001000050042771603001830037300372826432874510100200100002001000030037300371110201100991001001000010000000071011611296330100001003003830038300383003830038
10204300372330001201825295472510100100100001001000050042771603001830037300372826432874510100200100002001000030037300371110201100991001001000010000000071021611296330100001003003830038300383003830038
10204300372330000061295472510100100100001001000050042771603001830037300372826432874510100200100002001000030037300371110201100991001001000010000000071011611296330100001003003830038300383003830038
102043003724100000236029547251010010010008143103076804285272300183003730037282673288181025620010824226113743041630472511020110099100100100001000002249232838189212999438100001003032330517305653055230517
1020430565237011101329880788329465233102271541008812911650739429197930414305673056428302542894711962238117712361182530515305121211020110099100100100001002402301250868381223002629100001003059930568305163055930564
1020430610236151012068806043295022121023015310072144115007854289328303783047230512283034028873113422261132321610826304213022710110201100991001001000010000000071011611296330100001003003830038300383003830038
102043003723300015061295472510100100100001001000050042771603001830037300372826432874510100200100002001000030037300371110201100991001001000010000000071011611296330100001003003830038300383003830038

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)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 tlb miss (a1)ld unit uop (a6)l1d cache writeback (a8)a9accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
100243003723308629547251001010100001010000504277160030018030037300372828632876710010201000020100003003730037111002110910101000010000000640216222962910000103003830038300383003830038
100243003722506129547251001010100001010000504277160030018030037300372828632876710010201000020100003003730037111002110910101000010000000640216222962910000103003830038300383003830038
100243003722506129547251001010100001010000504277160030018030037300372828632876710010201000020100003003730037111002110910101000010020000640216222962910000103003830038300383003830038
100243003722506129547251001010100001010000504277160030018030037300372828632876710010201000020100003003730037111002110910101000010000000640216222962910000103003830038300383003830038
100243003722506129547251001010100001010000504277160030018030037300372828632876710010201000020100003003730037111002110910101000010000000640216222962910000103003830038300383003830038
100243003722506129547251001010100001010000504277160030018030037300372828632876710010201000020100003003730037111002110910101000010000000640216222962910000103003830038300383003830038
100243003722506129547251001010100001010000504277160030018030037300372828632876710010201000020100003003730037111002110910101000010000000640216222962910000103003830038300383003830038
100243003722506129547251001010100001010000504277160030018030037300372828632876710010201000020100003003730037111002110910101000010200000640216222962910000103003830038300383003830038
100243003722506129547251001010100001010000504277160030018030037300372828632876710010201000020100003003730037111002110910101000010000000640216222962910000103003830038300383003830038
100243003722506129547251001010100001010000504277160030018030037300372828632876710010201000020100003003730037111002110910101000010000000640216222962910000103003830038300383003830038

Test 3: throughput

Count: 8

Code:

  frint32z v0.2s, v8.2s
  frint32z v1.2s, v8.2s
  frint32z v2.2s, v8.2s
  frint32z v3.2s, v8.2s
  frint32z v4.2s, v8.2s
  frint32z v5.2s, v8.2s
  frint32z v6.2s, v8.2s
  frint32z v7.2s, v8.2s
  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)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)e0ec? simd retires (ee)? int retires (ef)f5f6f7f8fd
8020420058155121392580108100800081008002050064013220020200392003999776999080120200800322008003220039200391180201100991001008000010000111511801600200360800001002004020040200402004020040
80204200391550302580108100800081008002050064013220020200392003999776999080120200800322008003220039200391180201100991001008000010000111511801600200360800001002004020040200402004020040
80204200391550762580108100800081008002050064013220020200392003999776999080120200800322008003220039200391180201100991001008000010000111511801600200360800001002004020040200402004020040
80204200391550752580108100800081008002050064013220020200392003999776999080120200800322008003220039200391180201100991001008000010000111511801600200360800001002004020040200402004020040
8020420039155012082580108100800081008002050064013220020200392003999769998680120200800322008003220039200391180201100991001008000010000111511801600200360800001002004020040200402004020040
80204200391561211082580108100800081008002050064013220020200392003999776999080120200800322008003220039200391180201100991001008000010010111511801600200360800001002004020040200402004020040
80204200391550302580108100800081008002050064013220020200392003999776999080120200800322008003220039200391180201100991001008000010000111511801600200360800001002004020040200402004020040
802042003915505052580108100800081008002050064013220020200392003999776999080120200800322008003220039200391180202100991001008000010000111511801600200360800001002004020040200402004020040
80204200391610302580108100800081008002050064013220020200392003999776999080120200800322008003220039200391180201100991001008000010003111511801600200360800001002004020040200402008920040
8020420039155121072580108100800081008002050064013220020200392003999776999080120200800322008003220039200391180201100991001008000010000111511801600200360800001002004020040200402004020040

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)0e18191e1f3a3f51schedule 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 miss (a1)a9acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
800242003915500000001056258001010800001080000506400000020020200392003999963100198001020800002080000200392003911800211091010800001000005020716452003680000102004020040200402004020040
80024200391550000000991258001010800001080000506400001020020200392003999963100198001020800002080000200392003911800211091010800001000005020316452003680000102004020040200402004020040
800242003915500000001468258001010800001080000506400000020020200392003999963100198001020800002080000200392003911800211091010800001000305020516532003680000102004020040200402004020040
80024200391550000000895258001010800001080000506400000020020200392003999963100198001020800002080000200392003911800211091010800001000005020516462003680000102004020040200402004020040
80024200391560000000858258001010800001080000506400000020020200392003999963100198001020800002080000200392003911800211091010800001000005020316362003680000102004020040200402004020040
8002420039155000000082258001010800001080000506400000020020200392003999963100198001020800002080000200392003911800211091010800001000005020316362003680000102004020040200402004020040
80024200391550000000872258001010800001080000506400000020020200392003999963100198001020800002080000200392003911800211091010800001000005020316352003680000102004020040200402004020040
8002420039156000000040258001010800001080000506400000020020200392003999963100198001020800002080000200392003911800211091010800001000005020716352003680000102004020040200402004020040
80024200391560000000853258001010800001080000506400000020020200392003999963100198001020800002080000200392003911800211091010800001000005020316552003680000102004020040200402004020040
800242003915600000001020258001010800001080000506400001120020200392003999963100198001020800002080000200392003911800211091010800001000305020616352003680000102004020040200402004020040