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

SMINV (vector, 8B)

Test 1: uops

Code:

  sminv b0, v0.8b
  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)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
100430372327612547251000100010003981603018303730372414328951000100020003037303711100110002073216112629100030383038303830383038
10043037230612547251000100010003981603018303730372414328951000100020003037303711100110000073116112629100030383038303830383038
10043037230612547251000100010003981603018303730372414328951000100020003037303711100110000073116112629100030383038303830383038
10043037230612547251000100010003981603018303730372414328951000100020003037303711100110000073116112664100030383038303830383038
10043037230612547251000100010003981603018303730372414328951000100020003037303711100110000073116112629100030383038303830383038
10043037230612547251000100010003981603018303730372414328951000100020003037303711100110000073116112629100030383038303830383038
10043037230612547251000100010003981603018303730372414328951000100020003037303711100110000073116112629100030383038303830383038
10043037230612547251000100010003981603018303730372414328951000100020003037303711100110000073116112629100030383038303830383038
10043037230612547251000100010003981603018303730372414328951000100020003037303711100110000073116112629100030383038303830383038
10043037230612547251000100010003981603018303730372414328951000100020003037303711100110000073116112629100030383038303830383038

Test 2: Latency 1->2

Code:

  sminv b0, v0.8b
  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)03191e3f4e51schedule 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)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
102043003722502461295472510100100100001001000050042771600300183003730037282643287621027420010000200200003003730037111020110099100100100001000071011611296330100001003003830038300383003830038
10204300372250066295472510100100100001001000050042771600300183003730037282643287451010020010000200200003003730037111020110099100100100001000071011611296330100001003003830038300383003830038
10204300372250061295472510100100100001001000050042771600300183003730037282643287451010020010000200203583003730037111020110099100100100001000071011611296330100001003003830038300383003830038
10204300372250061295472510100100100001001000050042771600300183003730037282643287451010020010000200200003003730037111020110099100100100001000071011611296330100001003003830038300383003830038
10204300372250061295472510100100100001001000050042771600300183003730037282643287451010020010000200200003003730037111020110099100100100001000071011611296330100001003003830038300383003830038
10204300372250061295472510100100100001001000050042771600300183003730037282643287451010020010000200200003003730037111020110099100100100001000071011611296330100001003003830038300383003830038
10204300372250061295472510100100100001001000050042771600300183003730037282643287451010020010000200200003003730037111020110099100100100001000071011611296330100001003003830038300383003830038
10204300372250061295472510100100100001001000050042771600300183003730037282643287451010020010000200200003003730037111020110099100100100001000071011611296330100001003003830038300383003830038
10204300372250061295472510100100100001001000050042771600300183003730037282643287451010020010000200200003003730037111020110099100100100001000071011611296330100001003003830038300383003830038
10204300372250061295472510100100100001001000050042771600300183003730037282643287451010020010000200200003003730037111020110099100100100001000071011611296330100001003003830038300383003830038

1000 unrolls and 10 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 access (a0)l1d tlb miss (a1)ld unit uop (a6)st unit uop (a7)l1d cache writeback (a8)a9acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
1002430037224000000612954725100101010000101000050427716003001830037300372828632876710010201000020200003003730037111002110910101000010000000006402162229629010000103003830038300383003830038
10024300372250000002512954725100101010000101000050427716003001830037300372828672876710010201000020200003003730037111002110910101000010000000006402162229629010000103003830038300383003830038
1002430037225000000612954725100101010000101000050427716013001830037300372828632876710010201000020200003003730037111002110910101000010000000006402162229629010000103003830038300383003830038
1002430037225000000612954725100101010000101000050427716013001830037300372828632876710010201000020200003003730037111002110910101000010000000006402162229629010000103003830038300383003830038
1002430037224000000612954725100101010000101000050427716013001830037300372828632876710010201000020200003003730037111002110910101000010000000006402162229629010000103003830038300383003830038
1002430037225000000612954725100101010000101000050427716003001830037300372828632876710010201000020200003003730037111002110910101000010000000006402162229629010000103003830038300383003830038
10024300372250000120612954725100101010000101000050427716003001830037300372828632876710010201000020200003003730037111002110910101000010000000006402162229629010000103003830038300383003830038
1002430037225000000612954725100101010000101000050427716003001830037300372828632876710010201000020200003003730037111002110910101000010000000606402162229629010000103003830038300383003830038
1002430037225000000612954725100101010000101000050427716013001830037300372828632876710010201000020200003003730037111002110910101000010000000006402162229629010000103003830038300383003830038
1002430037225000000612954725100101010000101000050427716003001830037300372828632876710010201000020200003003730037111002110910101000010000000006402162329629010000103003830038300383003830038

Test 3: throughput

Count: 8

Code:

  sminv b0, v8.8b
  sminv b1, v8.8b
  sminv b2, v8.8b
  sminv b3, v8.8b
  sminv b4, v8.8b
  sminv b5, v8.8b
  sminv b6, v8.8b
  sminv b7, v8.8b
  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)181e3f51schedule 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)branch mispred nonspec (cb)cdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
802042005815000003025801081008000810080020500640132120020200392003999866999080120200800322001600642003920039118020110099100100800001000011151182161120036800001002004020040200402004020040
802042003915000003025801081008000810080020500640132120020200392003999776999080120200800322001600642003920039118020110099100100800001000011151181161120036800001002004020040200402004020040
8020420039150010030278011610080016100800285006401961200292004920048997610998680128200800382001600762004820049118020110099100100800001000022251283232220046800001002004920049200492004920050
8020420049150000064278011610080016100800285006401961200292004920048997610998680128200800382001600762004920048118020110099100100800001000022251282232220046800001002005020049200492004920049
802042004815000006427801161008001610080028500640196120029200482004899769998680128200800382001600762004820048118020110099100100800001000022251292232220046800001002004920050200502004920050
8020420048150000064268011610080016100800285006401961200292004920048997610998680128200800382001600762004920049118020110099100100800001000022251282232220046800001002005020050200502004920049
80204200491500000106268011610080016100800285006401961200292004820049997610998680128200800382001600762004920049118020110099100100800001000022251282232220045800001002005020050200492004920049
802042004815000006426801161008001610080028500640196120029200492004999769998680128200800382001600762004920048118020110099100100800001000022251292232220046800001002004920049200492004920050
802042004815000006426801161008001610080028500640196120029200482004999769998680128200800382001600762004820048118020110099100100800001000022251282232220045800001002004920049200492004920050
802042004915000006426801161008001610080028500640196120029200492004899769998680128200800382001600762004820048118020110099100100800001000022251282232220045800001002005020050200492004920049

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)191e1f3a3f51schedule 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)6061696d6emap 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)cdcfd0d2d5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
80024200501500000004025800101080000108000050640000102002020039200399996310019800102080000201600002003920039118002110910108000010000502052116112003680000102004020040200402004020040
800242003915000036004025800101080000108000050640000152002020039200399996310019800102080000201600002003920039118002110910108000010000502052116112003680000102004020040200402004020040
80024200391500000004025800101080000108000050640000152002020039200399996310019800102080000201600002003920039118002110910108000010000502052116112003680000102004020040200402004020040
800242003915000024004025800101080000108000050640000152002020039200399996310019800102080000201600002003920039118002110910108000010000502052116112003680000102004020040200402004020040
80024200391560000008225800101080000108000050640000152002020039200399996310019800102080000201600002003920039118002110910108000010000502052116112003680000102004020040200402004020040
8002420039150000219004025800101080000108000050640000152002020039200399996310019800102080000201600002003920039118002110910108000010000502052116112003680000102004020040200402004020040
80024200391500000004025800101080000108000050640000152002020039200399996310019800102080000201600002003920039118002110910108000010000502054116112003680000102004020040200402004020040
8002420039150000249004025800101080000108000050640000152002020039200399996310019800102080000201600002003920039118002110910108000010000502054116112003680000102004020040200402004020040
80024200391500000004025800101080000108000050640000152002020039200399996310019800102080000201600002003920039118002110910108000010000502054116112003680000102004020040200402004020040
80024200391500000004025800101080000108000050640000052002020039200399996310019800102080000201600002003920039118002110910108000010000502050116112003680000102004020040200402004020040