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 (scalar, S)

Test 1: uops

Code:

  frint32x s0, s0
  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)6061696d6emap 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)a9cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
1004303723010325472510001000100039816010301830373037241432895100010001161303730371110011000073116112629100030383038303830383038
100430372306125472510001000100039816010301830373037241432895100010001000303730371110011000073116112629100030383038303830383038
100430372206125472510001000100039816010301830373037241432895100010001000303730371110011000073116112629100030383038303830383038
100430372206125472510001000100039816010301830373037241432895100010001000303730371110011000073116112629100030383038303830383038
100430372306125472510001000100039816010301830373037241432895100010001000303730371110011000073116112629100030383038303830383038
100430372306125472510001000100039816010301830373037241432895100010001000303730371110011000073116112629100030383038303830383038
100430372306125472510001000100039816010301830373037241432895100010001000303730371110011000073116112629100030383038303830383038
100430372206125472510001000100039816010301830373037241432895100010001000303730371110011000073116112629100030383038303830383038
100430372306125472510001000100039816010301830373037241432895100010001000303730371110011000073116112629100030383038303830383038
100430372206125472510001000100039816010301830373037241432895100010001000303730371110011000073116112629100030383038303830383038

Test 2: Latency 1->2

Code:

  frint32x s0, s0
  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)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)a9acc2branch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)ec? simd retires (ee)? int retires (ef)f5f6f7f8fd
10204300372320000000612954725101001001000010010000500427716003001830037300372826403287451010020010000200100003003730037111020110099100100100001000000000000710216222963300100001003003830038300383003830038
102043003723300000005362954725101001001000010010000500427716013001830037300372826403287451010020010000200100003003730037111020110099100100100001000000000000710216222963300100001003003830038300383003830038
10204300372330000000612954725101001001000010010000500427716013001830037300372826403287451010020010000200100003003730037111020110099100100100001000000000000710216222963300100001003003830038300383003830038
10204300372320000000612954725101001001000010010000500427716003001830037300372826403287451010020010000200100003003730037111020110099100100100001000000000000710216222963300100001003003830038300383003830038
10204300372320000000612954725101001001000010010000500427716003001830037300372826403287451010020010000200100003003730037111020110099100100100001000000000000710216222963300100001003003830038300383003830038
10204300372330000030612954725101001001000010010000500427716003001830037300372826403287451010020010000200100003003730037111020110099100100100001000000000000710216222963300100001003003830038300383003830038
10204300372320000000612954725101001001000010010000500427716003001830037300372826403287451010020010000200100003003730037111020110099100100100001000000000000710216222963300100001003003830038300383003830038
102043003723300000002322954725101001001000010010000500427716013001830037300372826403287451010020010000200100003003730037111020110099100100100001000000000000710216222963300100001003003830038300383003830038
10204300372330000000612954725101001001000010010000500427716003001830037300372826403287451010020010000200100003003730037111020110099100100100001000000000000710216222963300100001003003830038300383003830038
10204300372410000000612954725101001001000010010000500427716003001830037300372826403287451010020010000200100003003730037111020110099100100100001000000000000710216222963300100001003003830038300383003830038

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0037

retire uop (01)cycle (02)03181e1f3f4e51schedule 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)79map 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)a9accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
100243003723300061295472510010101000010100005042771601300183003730037282863287671001002010000201000030037300371110021109101010000100000640616222962910000103003830038300383003830038
100243003723300061295472510010101000010100005042771600300183003730037282863287671001002010000201000030037300371110021109101010000100002705640216222962910000103003830038300383003830038
10024300372410002292954725100101010000101000050427716003001830037300372828632876710010102010000201000030037300371110021109101010000100000640216222962910000103003830038300383003830085
100243003723300061295472510010101000010100005042771600300183003730037282863287671001002010000201000030037300371110021109101010000100100640216222962910000103003830038300383003830038
1002430037232000103295472510010101000010100005042771600300183003730037282863287671001002010000201000030037300371110021109101010000100000640216222962910000103003830038300383003830038
100243003723313960103295382510010131000010100005042771600300183003730037282863287671001002010000201000030037300371110021109101010000100100640216222962910000103003830038300383003830038
100243003723200061295472510010101000010100005042771600300183003730037282863287671001002010000201000030037300371110021109101010000100000640216222962910000103003830038300383003830038
1002430037233000103295472510010101000010100005042771600300183003730037282863287671001002010000201000030037300371110021109101010000100140640216222962910000103003830038300383003830038
1002430037233090103295472510010101000010100005042771600300183003730084282863287671001002010000201000030037300371110021109101010000100100640216222962910000103003830038300383003830038
100243003723200061295472510010101000010100005042771600300183003730037282863287671001002010000201000030037300371110021109101010000100000640216222962910000103003830038300383003830038

Test 3: throughput

Count: 8

Code:

  frint32x s0, s8
  frint32x s1, s8
  frint32x s2, s8
  frint32x s3, s8
  frint32x s4, s8
  frint32x s5, s8
  frint32x s6, s8
  frint32x s7, s8
  movi v8.16b, 9

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code divided by count): 0.2506

retire uop (01)cycle (02)03mmu table walk data (08)l2 tlb miss data (0b)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)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)ld unit uop (a6)l1d cache writeback (a8)a9acc2branch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
8020420058155000012004025801081008000810080020500640132120020200392003999776999080120200800322008003220039200391180201100991001008000010000303011151180160020036800001002004020040200402004020040
802042003915500000003025801081008000810080020500640132120020200392003999776999080120200800322008003220039200391180201100991001008000010000000011151180160020036800001002004020040200402004020040
802042003915500000003025801081008000810080020500640132120020200392003999776999080120200800322008003220039200391180201100991001008000010000000011151180160020036800001002004020040200402004020040
802042003915500000003025801081008000810080020500640132020020200392003999776999080120200800322008003220039200391180201100991001008000010000000011151180160020036800001002004020040200402004020040
8020420039156000039003025801081008030110080020500640132120020200392003999776999080120200800322008003220039200391180201100991001008000010000003011151180160020036800001002004020040200402004020040
802042003915500000003025801081008000810080020500640132020020200392003999776999080120200800322008003220039200391180201100991001008000010000000011151180160020036800001002004020040200402004020040
802042003916100000003025801081008000810080020500640132020020200392003999776999080120200800322008003220039200391180201100991001008000010000100011151180160020036800001002004020040200402004020040
802042003915500000003025801081008000810080020500640132020020200392003999776999080120200800322008003220039200391180201100991001008000010000100011151180160020036800001002004020040200402004020040
802042003915500000003025801081008000810080020500640132020020200392003999776999080120200800322008003220039200391180201100991001008000010000000011151180160020036800001002004020040200402004020040
8020420039156000000030258010810080008100800205006401321200202003920039997769990801202008003220080032200392003911802011009910010080000100002800011151180160020036800001002004020040200402004020040

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)l2 tlb miss data (0b)18191e3f51schedule 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)9fst unit uop (a7)l1d cache writeback (a8)accdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
8002420039156000006125800101080000108000050640000120020200392003999963100198001020800002080000200392003921800211091010800001001005020624882003680000102004020040200402004020040
80024201561621111040258001010800001080000506400000200202003920039999631001980010208000020800002003920039118002110910108000010036005020616682003680000102004020040200402004020040
80024200391560000040258001010800001080000506400001200202003920039999631001980010208000020800002003920039118002110910108000010052005020616872003680000102004020040200402004020040
8002420039155000004025800101080000108010550640000120020200392003999963100198001020800002080000200392003911800211091010800001000005020516562003680000102004020040200402004020040
80024200391560000040258001010800001080000506400001200202003920039999631001980010208000020800002003920039118002110910108000010030315020716772003680000102004020040200402004020040
80024200391560000040258001010800001080000506400000200202003920039999631001980010208000020800002003920039118002110910108000010024305020516652003680000102004020040200402004020040
80024200391550000040258001010800001080000506400000200202003920039999631001980010208000020800002003920039118002110910108000010036005020516672003680000102004020040200402004020040
8002420039155000004025800101080000108000050640000120020200392003999963100198001020800002080000200392003911800211091010800001000005020716652003680000102004020040200402004020040
8002420039155000006825800101080000108000050640000120020200392003999963100198001020800002080000200392003911800211091010800001000005020616752003680000102004020040200402004020040
8002420039155000004025800101080000108000050640000120020200392003999963100198001020800002080000200392003911800211091010800001007005020516552003680000102004020040200402004020040