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 (vector, 2S)

Test 1: uops

Code:

  frint32x 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)031e3a3f4e51schedule 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
100430372400932547251000100010003981603018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
10043037231201032547251000100010003981603018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
100430372400612547251000100010003981603018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
100430372400612547251000100010003981603018303730372414328951000100010003037303711100110000373116112629100030383038303830383038
100430372300612547251000100010003981603018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
100430372400612547251000100010003981603018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
1004303724011032547251000100010003981603018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
1004303724001262547251000100010003981603018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
100430372400612547251000100010003981603018303730372414328951000100010003037303711100110001073116112629100030383038303830383038
1004303724001242547251000100010003981603018303730372414328951000100010003037303711100110000073116112629100030383038303830383038

Test 2: Latency 1->2

Code:

  frint32x 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)03mmu table walk data (08)09l2 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 access (a0)l1d tlb miss (a1)ld unit uop (a6)l1d cache writeback (a8)a9acc2cfd0d5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
1020430037233000000061295472510100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020110099100100100001000000000710011611296330100001003003830038300383003830038
1020430037233000000061295472510100100100001001000050042771601300183003730037282643287451010020010000200100003003730037111020110099100100100001000000000710011611296330100001003003830038300383003830038
10204300372330000021061295472510100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020110099100100100001000000000739011611296330100001003003830038300383003830038
10204300372330002000357295472510100100100001001000050042785121300183003730037282643287451010020010000200100003003730037111020110099100100100001000001000710011611296330100001003003830038300383003830038
1020430037233000000061295472510100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020110099100100100001000000000710011611296330100001003003830038300383003830038
1020430037232000000061295472510100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020110099100100100001000000000710011611296330100001003003830038300383003830038
1020430037233000000061295472510100100100001001000050042771601300183003730037282643287451010020010000200100003003730037111020110099100100100001000000000710011611296330100001003003830038300383003830038
1020430037233000000061295472510100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020110099100100100001000000000710011611296330100001003003830038300383003830038
1020430037233000000061295472510100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020110099100100100001000000000710011611296330100001003003830038300383003830038
1020430037232000000061295472510100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020210099100100100001000000000710011611296330100001003003830038300383003830038

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)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)acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
10024300372247506129547251001010100001010000504277160030018300373003728286328767100102010000201000030037300371110021109101010000100006402162229629010000103003830038300383003830038
1002430037225006129547251001010100001010000504277160030018300373003728286328767100102010000201000030037300371110021109101010000100006402162229629010000103003830038300383003830038
1002430037225273010329547251001010100001010000504277423030018300373003728286328767100102010000201000030037300371110021109101010000100306402162229629110000103003830038300383003830038
10024300372251506129547251001010100001010148504277160030018300373003728286328767101622010000201000030084300371110021109101010000100006404162229629010000103003830038300383003830038
1002430037225306129547251001010100001010000504277160030018300373003728286328767100102010000201000030037300371110021109101010000100006402162229629010000103003830038300383003830038
1002430037225006129547251001010100001010000504277160030018300373003728286328767100102010000201000030037300371110021109101010000100006402162229629010000103003830038300383003830038
100243003722530010329547251001010100001010000504277160030018300373003728286328767100102010000201000030037300371110021109101010000100006402162229629010000103003830038300383003830038
10024300372252106129547431001010100001010000504277160030018300373003728286328767100102010000201000030037300371110021109101010000100006402162229629010000103003830038300383003830038
1002430037225006129547251001010100001010000504277160030018300373003728286328767100102010000201000030037300371110021109101010000100006402162229629010000103003830038300383003830038
1002430037225006129547251001010100001010000504277160030018300373003728286328767100102010000201000030037300371110021109101010000100006402162229629010000103003830038300383003830038

Test 3: throughput

Count: 8

Code:

  frint32x v0.2s, v8.2s
  frint32x v1.2s, v8.2s
  frint32x v2.2s, v8.2s
  frint32x v3.2s, v8.2s
  frint32x v4.2s, v8.2s
  frint32x v5.2s, v8.2s
  frint32x v6.2s, v8.2s
  frint32x 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)03l2 tlb miss instruction (0a)l2 tlb miss data (0b)1e1f3a3f51schedule 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)a9acb5branch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfd5map dispatch bubble (d6)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
80204200581550000030258010810080008100800205006401321200202003920039997769990801202008003220080032200392003911802011009910010080000100006000111511811620036800001002004020040200402004020040
80204200391550000030258010810080008100800205006401321200202003920039997769990801202008003220080032200392003911802011009910010080000100001000111511801620036800001002004020040200402004020040
802042003915600000302580108100800081008002050064013212002020039200399977699908012020080032200800322003920039118020110099100100800001000000300111511801620036800001002004020040200402004020040
80204200391610000030258010810080008100800205006401321200202003920039997769990801202008003220080032200392003911802011009910010080000100001000111511801620036800001002004020040200402004020040
80204200391610000030258010810080008100800205006401321200202003920039997769990801202008003220080032200392003911802011009910010080000100008000111511801620036800001002004020040200402004020040
802042003915600600302580108100800081008002050064013212002020039200399977699908012020080032200800322003920039118020110099100100800001000059000111511801620036800001002004020040200402004020040
802042003915500000302580108100800081008002050064013212002020039200399977699908012020080032200800322003920039118020110099100100800001000000330111511801620036800001002004020040200402004020040
8020420039155000001170258010810080008100800205006401321200202003920039997769990801202008003220080032200392003911802011009910010080000100001000111514601620036800001002004020040200402004020040
80204200391550000030258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100001000111511801620036800001002004020040200402004020040
802042003915500000616258010810080008100800205006401320200202003920039997769990801202008003220080032200392003911802011009910010080000100001000111511801620036800001002004020040200402004020247

1000 unrolls and 10 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 data (0b)1e1f3f51schedule 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)accfd5map dispatch bubble (d6)dbddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
8002420039156000004025800101080000108000050640000020020200392003999963100198001020800002080000200392003911800211091010800001000050201416015152003680000102004020040200402004020040
80024200391600001204025800101080000108000050640000020020200392003999963100198001020800002080000200392003911800211091010800001000050201516016132003680000102004020040200402004020040
8002420039155000004025800101080000108000050640000020020200392003999963100198001020800002080000200392003911800211091010800001000050201716016132003680000102004020040200402004020040
8002420039155000004025800101080000108000050640000020020200392003999963100198001020800002080000200392003911800211091010800001000050201616012162003680000102004020040200402004020040
8002420039156001004025800101080000108000050640000120020200392003999963100198001020800002080106200392003911800211091010800001000350201316013112003680000102004020040200402004020040
8002420039155000004025800101080000108000050640000020020200392003999968100198001020800002080000200392003911800211091010800001000050201616012162003680000102004020040200402004020040
80024200391610000040258001010800001080000506400000200202003920039100063100198001020800002080000200392003911800211091010800001000050201416019132003680000102004020040200402004020040
8002420039155000004025800101080000108000050640000020020200392003999963100198001020800002080000200392003911800211091010800001000050201316014162003680000102004020040200402004020040
8002420039155000004025800101080000108000050640000020020200392003999963100198001020800002080000200392003911800211091010800001000650201716013132003680000102004020040200402004020040
8002420039161000004025800101080000108000050640000020020200392003999963100198001020800002080000200392003911800211091010800001000350201416011112003680000102004020040200402004020040