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

FRINTP (scalar, H)

Test 1: uops

Code:

  frintp h0, h0
  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)acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
1004303723061254725100010001000398160030183037303724143289510001000100030373037111001100000073116112629100030383038303830383038
1004303723361254725100010001000398160030183037303724143289510001000100030373037111001100000073116112629100030383038303830383038
1004303723061254725100010001000398160130183037303724143289510001000100030373037111001100000073116112629100030383038303830383038
1004303723082254725100010001000398160030183037303724143289510001000100030373037111001100000073116112629100030383038303830383038
1004303724061254725100010001000398160130183037303724143289510001000100030373037111001100000073116112629100030383038303830383038
1004303723061254725100010001000398160030183037303724143289510001000100030373037111001100000073116112629100030383038303830383038
1004303723061254725100010001000398160030183037303724143289510001000100030373037111001100000073116112629100030383038303830383038
1004303723061254725100010001000398160130183037303724143289510001000100030373037111001100000073116112629100030383038303830383038
1004303724061254725100010001000398160130183037303724143289510001000100030373037111001100000073116112629100030383038303830383038
10043037230103254725100010001000398160130183037303724143289510001000100030373037111001100000073116112629100030383038303830383038

Test 2: Latency 1->2

Code:

  frintp h0, h0
  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)03mmu table walk data (08)l2 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)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 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
102043003723300000061295472510100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020110099100100100001000003071011611296330100001003003830038300383003830038
102043003723300000061295472510100100100001001000050042771601300183003730037282643287451010020010000200100003003730037111020110099100100100001000000071011611296330100001003003830038300383003830038
10204300372330000006129547251010010010000100100005004277160030018300373003728264328745101002001000020010000300373003711102011009910010010000100000123071011611296330100001003003830038300383003830038
102043003723300000061295472510100100100001001000050042771600300183003730037282923287451010020010000200100003003730037111020110099100100100001000003071011611296330100001003003830038300383003830038
1020430037233000012061295472510100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020110099100100100001000003071011611296330100001003003830038300383003830038
102043003723300000061295472510100100100001001060050042771601300543003730037282643287451010020010000200100003003730037111020110099100100100001000003071011611296330100001003003830038300383003830038
1020430037233000000276295472510100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020110099100100100001000003071011611296330100001003003830038300383003830038
102043003723300000061295472510100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020110099100100100001000006071011611296330100001003003830038300383003830038
1020430037232000000612954725101001001000010010000500427716003001830037300372826432874510100200100002001000030037300371110201100991001001000010000051071011611296330100001003003830038300383003830038
102043003723200000061295472510100100100001001000050042771601300183003730037282643287451010020010000200100003003730037111020110099100100100001000006071011611296330100001003003830038300383003830038

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)6061696b6d6emap 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)a9acc2cfd0d2d5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
100243003722500612954725100101010000101000050427716010300180300373003728286328767100102010000201000030037300371110021109101010000100000640002162229629010000103003830038301793003830038
1002430037225005362954725100101010000101000050427716010300183300373003728286328767100102010000201000030037300371110021109101010000100000640002162229629010000103003830038300383003830038
1002430037224001562954725100101010000101000050427716004300180300373003728286328767100102010000201000030037300371110021109101010000100000640002162229629010000103003830038300383003830038
100243003722500612954725100101010000101000050427716010300180300373003728286328767100102010000201000030037300371110021109101010000100000640002162229629010000103003830038300383003830038
100243003722500612954725100101010000101000050427716004300180300373003728286328767100102010000201000030037300371110021109101010000100001640002162229629010000103003830038300383003830038
100243003722500612954725100101010000101000050427716004300180300373003728286328767100102010000201000030037300371110021109101010000100000640002162229629010000103003830038300383003830038
100243003722500612954725100101010000101000050427716004300180300373003728286328767100102010000201000030037300371110021109101010000100000640442162229629010000103003830038300383003830038
1002430037225006129529441001911100081110300554278512043005403013330131282911128803101612010330201032530131301313110021109101010000100227700684043333329667110000103012130085300863008530086
1002430084226186120207029538251001011100081110300664279864103005403013130084282911028804103122210162201033630085300842110021109101010000101030640442162229629010000103003830038300383003830038
1002430037225001812954725100101010000101000050427716004300180300373003728286328767100102010000201000030037300371110021109101010000100000640442162229629010000103003830038300383003830038

Test 3: throughput

Count: 8

Code:

  frintp h0, h8
  frintp h1, h8
  frintp h2, h8
  frintp h3, h8
  frintp h4, h8
  frintp h5, h8
  frintp h6, h8
  frintp h7, h8
  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)031e3a3f5051schedule 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)acbranch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
802042004915502350258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100005411151227168920036800001002004020040200402004020040
80204200391550235025801081008000810080020500640132020020200392003999776999080120200800322008003220039200391180201100991001008000010001011151228163620036800001002004020040200402004020040
80204200391550235025801081008000810080020500640132020020200392003999776999080120200800322008003220039200391180201100991001008000010002011151228168820036800001002004020040200402004020040
80204200391560235025801081008000810080020500640132020020200392003999776999080120200800322008003220039200391180201100991001008000010001611151228168920036800001002004020040200402004020040
802042003915502350258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100042311151228166620036800001002004020040200402004020040
8020420039156022250258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100037611151228163820036800001002004020040200402004020040
80204200391560274025801081008000810080020500640132020020200392003999776999080120200800322008003220039200391180201100991001008000010001011151229166620036800001002004020040200402004020040
802042003915502350258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100018411151228168820036800001002004020040200402004020040
802042003915502350258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100008711151229168820036800001002004020040200402004020040
802042003915502330025801081008000810080020500640132020020200392003999776999080120200800322008003220039200391180201100991001008000010000011151226168820036800001002004020040200402004020040

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)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 mispred nonspec (cb)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
80024200391550822580010108000010800005064000002002020039200399996310019800102080000208000020039200391180021109101080000102005020916222003680000102004020040200402004020040
80024200391550402580010108000010800005064000002002020039200399996310019800102080000208000020039200391180021109101080000101005020216362003680000102004020040200402004020040
80024200391560402580010108000010800005064000002002020039200399996310019800102080000208000020039200391180021109101080000103715605020216222003680000102004020040200402004020040
80024200391610402580010108000010800005064000002002020039200399996310019800102080000208000020039200391180021109101080000104005020616622003680000102004020040200402004020040
800242003915506825800101080000108000050640000020081200392003999963100198001020800002080000200392003911800211091010800001050005020216262003680000102004020040200402004020040
80024200391550402580010108000010800005064000012002020039200399996310019800102080000208000020039200391180021109101080000102005020216362003680000102004020040200402004020040
80024200391550402580010108000010800005064000012002020039200399996310019800102080000208000020039200391180021109101080000103605020216222003680000102004020040200402004020040
80024200391550402580010108000010800005064000012002020039200399996310019800102080000208000020039200391180021109101080000101005020316232003680000102004020040200402004020040
80024200391550402580010108000010800005064000012002020039200399996310019800102080000208000020039200391180021109101080000101305020316222003680000102004020040200402004020040
800242003915604202580010108000010800005064000002002020039200399996310019800102080000208000020039200391180021109101080000103005020616322003680000102004020040200402004020040