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

UADDLV (vector, 4S)

Test 1: uops

Code:

  uaddlv d0, v0.4s
  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 cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
100430372206125472510001000100039816013018303730372414328951000100020003037303711100110000073116112629100030383038303830383038
1004303723019425472510001000100039816013018303730372414328951000100020003037303711100110000073116112629100030383038303830383038
100430372306125472510001000100039816013018303730372414328951000100020003037303711100110000073116112629100030383038303830383038
100430372206125472510001000100039816013018303730372414328951000100020003037303711100110009073116112629100030383038303830383038
1004303723061254725100010001000398160130183037303724143289510001000200030373037111001100014073116112629100030383038303830383038
100430372206125472510001000100039816013018303730372414328951000100020003037303711100110000073116112629100030383038303830383038
100430372306125472510001000100039816013018303730372414328951000100020003037303711100110000073116112629100030383038303830383038
1004303722061254725100010001000398160130183037303724143289510001000200030373037111001100003973116112629100030383038303830383038
100430372306125472510001000100039816013018303730372414328951000100020003037303711100110000073116112629100030383038303830383038
100430372306125472510001000100039816013018303730372414328951000100020003037303711100110000073116112629100030383038303830383038

Test 2: Latency 1->2

Code:

  uaddlv d0, v0.4s
  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)0309l2 tlb miss data (0b)191e3f4e51schedule 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)9fld unit uop (a6)l1d cache writeback (a8)a9acc2branch mispred nonspec (cb)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
1020430084225000061295472510100100100001001000050042771601300183003730037282643287451010020010000200200003003730037111020110099100100100001000302818007102162229633100001003003830038300383003830038
1020430037225000061295472510100100100001001000050042771601300183003730037282643287451010020010000200200003003730037111020110099100100100001000003007102162229633100001003003830038300383003830038
1020430037225000061295472510100100100001001000050042771601300183003730037282643287451010020010000200200003003730037111020110099100100100001000003007102162229633100001003003830038300383003830038
1020430037225000061295472510100100100001001000050042771601300183003730037282643287451010020010000200200003003730037111020110099100100100001000003007102162229633100001003003830038300383003830038
1020430037225000061295472510100100100001001000050042771601300183013230037282643287451010020010000200200003003730037111020110099100100100001000009007102162229633100001003003830038300383003830038
1020430037224000061295472510100100100001001000050042771601300183003730037282643287451010020010000200200003003730037111020110099100100100001000003007102162229633100001003013230038300383003830038
1020430037225000061295472510100100100001001000050042771601300543003730037282643287451010020010000200200003003730037111020110099100100100001000003007102162229633100001003003830038300383003830038
10204300372250000189295472510100100100001001000050042771601300183003730037282643287451010020010000208200003003730037111020110099100100100001005103007102162229633100001003003830038300383003830038
10204300372250000210295472510100100100001001000050042771601300183003730037282643287451010020010000200200003003730037111020110099100100100001000003007102162229633100001003003830038300383003830038
1020430037225000061295472510100100100001001000050042771601300183003730037282643287451010020010000200200003003730037111020110099100100100001000006007102162229633100001003003830038300383003830038

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)a9accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
10024300372250612954725100101010000101000050427716003001830037300372828632876710010201000020200003003730037111002110910101000010200640216222962910000103003830038300383003830079
10024300372250612954725100101010000101000050427716003001830037300372828632876710010201000020200003003730037111002110910101000010000640216222962910000103003830038300383003830038
10024300372250612954725100101010000101000050427716003001830037300372828632876710010201000020200003003730037111002110910101000010400640216222962910000103003830038300383003830038
100243003722506129547251001010100001010000504277160030018300373003728286328767100102010000202000030037300371110021109101010000100012640216222962910000103003830038300383008530038
100243003722506129547251001010100001010000504277160130018300373003728286328767100102010000202000030037300371110021109101010000103600640216222962910000103003830038300383003830038
10024300372250612954725100101010000101000050427716003001830037300372828632876710010201000020200003003730037111002110910101000010003640216222962910000103003830038300383003830038
10024300372250612954725100101010000101000050427716003001830037300372828632876710010201000020200003003730037111002110910101000010003640216222962910000103003830038300383003830038
10024300372250612954725100101010000101000050427716013001830037300372828632876710010201000020200003003730037111002110910101000010003640216222962910000103003830038300383003830038
10024300372250612954725100101010000101000050427716003001830037300372828632876710010201000020200003003730037111002110910101000010000640216222962910000103003830085300383003830038
10024300372240822954725100101010000101000050427716003001830037300372828632876710010201000020200003003730037111002110910101000010100640216222962910000103003830038300383003830038

Test 3: throughput

Count: 8

Code:

  uaddlv d0, v8.4s
  uaddlv d1, v8.4s
  uaddlv d2, v8.4s
  uaddlv d3, v8.4s
  uaddlv d4, v8.4s
  uaddlv d5, v8.4s
  uaddlv d6, v8.4s
  uaddlv d7, v8.4s
  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)03191e1f3f51schedule 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)a9acc2branch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfd5map dispatch bubble (d6)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
8020420058150000302580108100800081008002050064013220020200392003999776999080120200800322001600642003920039118020110099100100800001004000111511801620036800001002004020040200402004020040
80204200391500003025801081008000810080020500640132200202003920039997769990801202008003220016006420039200391180201100991001008000010056030111511801620036800001002009020040200402004020040
8020420039150000302580108100800081008002050064013220020200392003999776999080120200800322001600642003920039118020110099100100800001003060111511801620036800001002004020040200402004020040
8020420039150000302580108100800081008002050064013220020200392003999776999080120200800322001600642003920039118020110099100100800001000000111511801620036800001002004020040200402004020040
8020420039150000302580108100800081008002050064013220020200392003999776999080120200800322001600642003920039118020110099100100800001000060111511801620036800001002004020040200402004020040
80204200391501603025801081008000810080020500640132200202003920039997769990801202008003220016006420039200391180201100991001008000010053000111511801620036800001002004020040200402004020040
8020420039150000302580108100800081008002050064013220020200392003999776999080120200800322001600642003920039118020110099100100800001000030111511801620036800001002004020040200402004020040
8020420039150000302580108100800081008002050064013220020200392003999776999080120200800322001600642003920039118020110099100100800001000000111511801620036800001002004020040200402004020040
8020420039150000302580108100800081008002050064013220020200392003999776999080120200800322001600642003920039118020110099100100800001000000111511801620036800001002004020040200402004020040
8020420039150000302580108100800081008002050064013220020200392003999776999080120200800322001600642003920039118020110099100100800001003000111511801620036800001002004020040200402004020040

1000 unrolls and 10 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)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)accfd5map dispatch bubble (d6)ddfetch restart (de)e0eaeb? simd retires (ee)? int retires (ef)f5f6f7f8fd
8002420051150040258001010800001080000506400000200202003920039999603100198001020800002016000020039200391180021109101080000100000502031632200360080000102004020040200402004020040
8002420039150040258001010800001080000506400000200202003920039999603100198001020800002016000020039200391180021109101080000100000502031623200360080000102004020040200402004020040
8002420039150040258001010800001080000506400000200202003920039999603100198001020800002016000020039200391180021109101080000100010502041633200360080000102004020040200402004020040
8002420039150040258001010800001080000506400000200202003920039999603100198001020800002016000020039200391180021109101080000100000502031634200360080000102004020040200402004020040
8002420039150040258001010800001080000506400000200202003920039999603100198001020800002016000020039200391180021109101080000100000502021632200360080000102004020040200402004020040
80024200391500402580010108000010800005064000002002020039200399996031001980010208000020160000200392003911800211091010800001000469502031632200360080000102004020040200402004020040
8002420039150040258001010800001080000506400000200202003920039999673100198001020800002016000020039200391180021109101080000100020502031633200360080000102004020040200402004020040
8002420039150040258001010800001080000506400000200202003920039999603100198001020800002016000020039200391180021109101080000100000502031632200360080000102004020040200402004020040
8002420039150040258001010800001080000506400000200202003920039999603100198001020800002016000020039200391180021109101080000100000502021633200360080000102004020040200402004020040
8002420039150040258001010800001080000506400000200202003920039999603100198001020800002016000020039200391180021109101080000100000502031652200360080000102004020040200402004020040