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

FRINTI (vector, 8H)

Test 1: uops

Code:

  frinti v0.8h, v0.8h
  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)03l2 tlb miss instruction (0a)1e3f4e51schedule 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
1004303724206125472510001000100039816003018303730372414328951000100010003037303711100110000073216222629100030383038303830383038
1004303724206125472510001000100039816013018303730372414328951000100010003037303711100110000073216222629100030383038303830383038
1004303724206125472510001000100039816003018303730372414328951000100010003037303711100110000073216222629100030383038303830383038
10043037232126125472510001000100039816013018303730372414328951000100010003037303711100110000073216222629100030383038303830383038
1004303723206125472510001000100039816003018303730372414328951000100010003037308311100110000073216222629100030383038303830383038
10043037242012925472510001000100039816003018303730372414328951000100010003037303711100110000073216222629100030383038303830383038
10043037242126125472510001000100039816013018303730372414328951000100010003037303711100110000073216222629100030383038303830383038
1004303723206125472510001000100039816013018303730372414328951000100010003037303711100110000073216222629100030383038303830383038
1004303723206125472510001000100039816013018303730372414328951000100010003037303711100110000073216222629100030383038303830383038
1004303723206125472510001000100039816013018303730372414328951000100010003037303711100110000073216222629100030383038303830383038

Test 2: Latency 1->2

Code:

  frinti v0.8h, v0.8h
  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)1e1f3a3f4e51schedule 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)l1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)ea? simd retires (ee)? int retires (ef)f5f6f7f8fd
1020430037233000008229547251010010010000100100005004277160030018300373003728264032874510100200100002001000030037300371110201100991001001000010000003710116112963300100001003003830038300383003830038
1020430037232000006129547251010010010000100100005004277160030018300373003728264032874510100200100002001000030037300371110201100991001001000010000003710116112963300100001003003830038300383003830038
1020430037232000006129547251010010010000100100005004277160030018300373003728264032874510100200100002001000030037300371110201100991001001000010000000710116112963322100001003003830038300383003830038
10204300372320000010329547251010010010000100100005004277160130018300373003728264032874510100200100002001000030037300371110201100991001001000010000000710116112963300100001003003830038300383003830038
1020430037233000006129547251010010010000100100005004277160030018300373003728264032874510100200100002001000030037300371110201100991001001000010000000710116112963300100001003003830038300383003830038
1020430037241000006129547251010010010000100100005004277160130018300373003728264032874510100200100002001000030037300371110201100991001001000010000003710116112963300100001003003830038300383003830038
10204300372330000010329547251010010010000100100005004277160030018300373003728264032874510100200100002001000030037300371110201100991001001000010000000710116112963300100001003003830038300383003830038
1020430037233000006129547251010010010000100100005004277160030018300373003728264032874510100200100002001000030037300371110201100991001001000010000000710116112963300100001003003830038300383003830038
1020430037233000006129547251010010010000100100005004277160130018300373003728264032874510100200100002001000030037300371110201100991001001000010000000710116112963300100001003003830038300383003830038
1020430037233000008729547251010010010000100100005004277160130018300373003728264732874510100200100002001000030037300371110201100991001001000010000020710116112963300100001003003830038300383003830038

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0037

retire uop (01)cycle (02)03091e1f3f4e51schedule 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 cache writeback (a8)a9acbranch cond mispred nonspec (c5)cdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
10024300372330510139129547251001010100001010000504277160030018300373003728291328767100102010000201000030037300371110021109101010000104000006402162229629010000103003830038300383003830038
1002430037233048006129547251001010100001010000504277160030018300373003728286328767100102010000201000030037300371110021109101010000100000006402162229629010000103003830038300383003830038
10024300372330006129547251001010100001010000504277160030018300373003728286328767100102010000201000030037300371110021109101010000100300006402162229629010000103003830038300383003830038
10024300372330006129547251001010100001010000504277160030018300373003728286328767100102010000201000030037300371110021109101010000100000006402162229629010000103003830038300383003830038
100243003723301206129547251001010100001010000504277160030018300373003728286328767100102010000201000030037300371110021109101010000100000006402162229629010000103003830038300383003830038
100243003723300011729547251001010100001010000504277160030018300373007028286328767100102010000201000030037300371110021109101010000100000006402162229629010000103003830038300383003830038
10025300372330006129547251001010100001010000504277160030018300373003728286328767100102010000201000030037300371110021109101010000100000006402162229629010000103003830038300383003830038
10024300372330006129547251001010100001010000504277160030018300373003728286328767100102010000201000030037300371110021109101010000100000106402162229629010000103003830038300383003830038
10024300372330006129547251001010100001010000504277160030018300373003728286328767100102010000201000030037300371110021109101010000100000006402162229629010000103003830038300383003830038
10024300372320006129547251001010100001010000504277160030018300373003728286328767100102010000201000030037300371110021109101010000100000006402162229629010000103003830038300383003830038

Test 3: throughput

Count: 8

Code:

  frinti v0.8h, v8.8h
  frinti v1.8h, v8.8h
  frinti v2.8h, v8.8h
  frinti v3.8h, v8.8h
  frinti v4.8h, v8.8h
  frinti v5.8h, v8.8h
  frinti v6.8h, v8.8h
  frinti v7.8h, v8.8h
  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)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
802042005815603025801081008000810080020500640132120020200392003999776999080120200800322008003220039200391180201100991001008000010000611151182161120036800001002004020040200402004020040
802042003915503025801081008000810080020500640132120020200392003999776999080120200800322008003220039200391180201100991001008000010000311151182162120036800001002004020040200402004020040
802042003915603025801081008000810080020500640132120020200392003999776999080120200800322008003220039200391180201100991001008000010000611151181161220036800001002004020040200402004020040
80204200391550302580108100800081008002050064013202002020039200399977699908012020080032200800322003920039118020110099100100800001000057811151181161220036800001002004020040200402004020040
802042003915503025801081008000810080020500640132020020200392003999776999080120200800322008003220039200391180201100991001008000010000311151182162220036800001002004020040200402004020040
802042003915503025801081008000810080020500640132020020200392003999776999080120200800322008003220039200391180201100991001008000010000311151181162220036800001002004020040200402004020040
802042003915503025801081008000810080020500640132020020200392003999776999080120200800322008003220039200391180201100991001008000010000611151181161220036800001002004020040200402004020040
802042003915503025801081008000810080020500640132120020200392003999776999080120200800322008003220039200391180201100991001008000010000011151182162120036800001002025620040200402004020040
8020420039155058258010810080008100800205006401321200202003920039997769990801202008003220080032200392003911802011009910010080000100272311151182162220036800001002004020040200402004020040
802042003916103025801081008000810080020500640132120020200392003999776999080120200800322008003220039200391180201100991001008000010000011151182162120036800001002004020040200402004020040

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)l2 tlb miss instruction (0a)181e3a3f51schedule 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 cache writeback (a8)accfl1i cache miss demand (d3)d5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
8002420050156000004025800101080000108011250640000020020200392003999963100198001020800002080000200392003911800211091010800001000050200116112003680000102004020040200402004020040
8002420039156000004025800101080000108000050640000020020200392003999963100198001020800002080000200392003911800211091010800001000050200116112003680000102009020040200402004020040
8002420039156000004025800101080000108000050640000120020200392003999963100198001020800002080000200392003911800211091010800001000050200116212003680000102004020040200402004020040
8002420039156000004025800101080000108000050640000120020200392003999963100198001020800002080000200392003911800211091010800001000350200116112003680000102004020040200402004020040
8002420039164000904025800101080000108000050640000020020200392003999963100198001020800002080000200392003911800211091010800001000050200116112003680000102004020040200402004020040
8002420039156000004025800101080000108000050640000020020200392003999963100198001020800002080000200392003911800211091010800001000050200116112003680000102004020040200402004020040
8002420039156000004025800101080000108000050640000120020200392003999963100198001020800002080000200392003911800211091010800001000050200116112003680000102004020040200402004020040
8002420039156000004025800101080000108000050640000120020200392003999963100198001020800002080000200392003911800211091010800001003050200116112003680000102004020040200402004020040
8002420039155100004025800101080000108000050640000020020200392003999963100198001020800002080000200762003911800211091010800001000050200116112003680000102004020040200402004020040
8002420039155000004025800101080000108000050640000120020200392003999963100198001020800002080000200392003911800211091010800001000050200116112003680000102004020040200402004020040