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

FRINTM (scalar, D)

Test 1: uops

Code:

  frintm 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)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
100430372406125472510001000100039816003018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
100430372307025472510001000100039816003018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
100430372306125472510001000100039816003018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
1004303723126125472510001000100039816003018303730372414328951000100010003037303711100110001073116112629100030383038303830383038
100430372406125472510001000100039816003018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
100430372406125472510001000100039816003018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
1004303723010325472510001000100039816003018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
100430372406125472510001000100039816003018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
100430372406125472510001000100039816003018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
100430372406125472510001000100039816003018303730372414328951000100010003037303711100110000073116112629100030383038303830383038

Test 2: Latency 1->2

Code:

  frintm 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)03mmu table walk data (08)1e3f4e51schedule 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 cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
102043003723200538295472510125125100001251000050042771600300180300373003728264328745101002001000020010000300373003711102011009910010010000100017171011611296330100001003003830038300383003830038
1020430037233006129547251010010010000125100006264277160030018030037300372826432874510100200100002001000030037300371110201100991001001000010015471011611296330100001003003830038300383003830038
10204300372320061295472510100125100001251000062642771601300180300373003728264328745101002001000020010000300373003711102011009910010010000100018071011611296330100001003003830038300383003830038
10204300372341077429547251010010010000100100005004277160130018030037300372826432874510100200100002001000030037300371110201100991001001000010002171221611296330100001003003830038300383003830038
102043003723300612954725101001001000010010000500427716013001803003730037282643287451010020010000200100003003730037111020110099100100100001000671221722296330100001003003830038300383003830038
10204300372330127262954725101001001000010010000500427716003001803003730037282643287451010020010000200100003003730037111020110099100100100001002071211611296330100001003003830038300383003830038
1020430037232002042954725101001001000010010000626427716013001803003730037282643287451010020010000200100003003730037111020110099100100100001000071011611296330100001003003830038300383003830038
1020430037233012612954725101251251000010010000500427716013001803003730037282643287451010020010000200100003003730037111020110099100100100001000371011611296330100001003003830038300383003830038
102043003723410612954725101001001000010010000500427716003001803003730037282643287451010020010000200100003003730037111020110099100100100001000144712316212963325100001003003830038300383003830038
10204300372330061295472510100100100001001000062642771600300180300373003728264328745101002001000020010000300373003711102011009910010010000100015371011612296330100001003003830038300383003830038

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0037

retire uop (01)cycle (02)03mmu table walk instruction (07)mmu table walk data (08)l2 tlb miss instruction (0a)l2 tlb miss data (0b)18191e1f3a3f4e51schedule 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 access (a0)l1d tlb miss (a1)ld unit uop (a6)st unit uop (a7)l1d cache writeback (a8)a9acc2cfd2d5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
1002430037233000000120082295472510010101000010100005042771600300183003730037282860328767100102010000201000030037300371110021109101010000100300000064003163329629010000103003830038300863003830038
10024300372320000000132082295472510010101000010100005042771600300183003730037282860328767100102010000201000030037300371110021109101010000100000000064003163329629010000103003830038300383003830038
1002430037233000000300612954725100101010000101000050427716003001830037300372828601828767100102010000201000030037300371110021109101010000100000000275301288131129917010000103003830038300383003830133
10024301792342101101013297921552295299910071111004810100005042771601304143050830557283200502895211512221147324116273051030368111100211091010100001002300427945088206978530025110000103060730513305593055730546
1002430321236011071014529680663529448225100701710088121150010342771600300183003730037282860328767100102010000201000030037300371110021109101010000104400000064003163329629010000103003830038300383003830038
1002430037233000000000166295472510010101000010100005042771601300183003730037282860328767100102010000201000030037300371110021109101010000100000000064003163329629010000103003830038300383003830038
100243003723300000000061295472510010101000010100005042771600300183003730037282860328767100102010000201000030037300371110021109101010000100000000064003163329629010000103003830038300383003830038
100243003722500000000061295472510010101000010100005042771600300183003730037282860328767100102010000201000030037300371110021109101010000100000000064003163329629010000103003830038300383003830038
100243003722500000000061295472510010101000010100005042771600300183003730037282860328767100102010000201000030037300371110021109101010000100000000064003163329629010000103003830038300383003830038
100243003722500000000061295472510010101000010100005042771600300183003730037282867328767100102010000201000030037300371110021109101010000100000000064003163629629010000103003830038300383003830038

Test 3: throughput

Count: 8

Code:

  frintm d0, d8
  frintm d1, d8
  frintm d2, d8
  frintm d3, d8
  frintm d4, d8
  frintm d5, d8
  frintm d6, d8
  frintm 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)03mmu table walk instruction (07)mmu table walk data (08)l2 tlb miss instruction (0a)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)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 access (a0)st unit uop (a7)l1d cache writeback (a8)a9acbranch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfmap dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
802042005915500000000302580108100800081008002050064013202002020039200399977069990801202008003220080032200392003911802011009910010080000100000001115118160020036800001002004020040200402004020040
80204200391560000000030258010810080008100800205006401320200202003920039997706999080120200800322008003220091200391180201100991001008000010000004661115118160020036800001002004020040200402004020040
802042003915500001000302580108100800081008002050064013202002020039200399977069990801202008003220080032200392003911802011009910010080000100000001115118160020036800001002004020040200402004020040
802042003915600000000302580108100800081008002050064013202002020039200399977069990801202008003220080032200392003911802011009910010080000100000001115118160020036800001002004020040200402004020040
802042003915500001000302580108100800081008002050064013202002020039200399977069990801202008003220080032200392003911802011009910010080000100000001115118160020036800001002004020040200402004020040
802042003915500000000302580108100800081008002050064013202002020039200399986069990801202008003220080032200392003911802011009910010080000100000001115118160020036800001002004020040200402004020040
802042003915500000000302580108100800081008002050064013202002020039200399977069990801202008003220080032200392003911802011009910010080000100000031115118160220036800001002004020040200402004020040
8020420039155000000003025801081008000810080020500640132020020200392003999770699908012020080032200800322003920039118020110099100100800001000015061115118160020036800001002004020040200402004020040
802042003916000000000302580108100800081008002050064013202002020039200399977069990801202008003220080032200392003911802011009910010080000100000001115118160020036800001002004020040200402004020040
802042003915500000000302580108100800081008002050064013212002020039200399977069990801202008003220080032202502003911802011009910010080000100000001115118160020036800001002004020040200402004020040

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)09l2 tlb miss data (0b)193f51schedule 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 cond mispred nonspec (c5)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
80024200391550000822580010108000010800005064000002002020039200399996310019800102080000208000020039200391180021109101080000100905020316552003680000102004020040200402004020040
8002420039155000040258001010800001080000506400000200202003920039999631001980010208000020800002003920039118002110910108000010017405020316662003680000102004020040200402004020040
800242003915500004025800101080000108000050640000020020200392003999963100198001020800002080000200392003911800211091010800001005705020516632003680000102004020040200402004020040
80024200391560000402580010108000010800005064000002002020039200399996310019801162080000208000020039200391180021109101080000100005020316832003680000102004020040200402004020040
80024200391551000402580010108000010800005064000002002020039200399996310019800102080000208000020039200391180021109101080000100605020316322003680000102004020040200402004020040
800242003915600008225800101080000108000050640000020020200392003999963100198001020800002080000200392003911800211091010800001001205020316662003680000102004020040200402004020040
80024200391560000402580010108000010800005064000002002020039200399996310019800102080000208000020039200391180021109101080000101605020316322003680000102004020040200402004020040
80024200391550000862580010108000010800005064000002002020039200399996310019800102080000208000020039200391180021109101080000100605020616232003680000102004020040200402004020040
80024200391560000402580010108000010800005064000002002020039200399996310019800102080000208000020039200391180021109101080000100305020716672003680000102004020040200402004020040
80024200391550000402580010108000010800005064000002002020039200399996310019800102080000208000020039200391180021109101080000100305020316322003680000102004020040200402004020040