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

UABDL (vector, 8H)

Test 1: uops

Code:

  uabdl v0.8h, v0.8b, v1.8b
  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)031e1f3f4e51schedule 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)cfd5map dispatch bubble (d6)ddfetch restart (de)e0ea? simd retires (ee)f5f6f7f8fd
10043037232406125482510001000100039831313018303730372415328951000100020003037303711100110000731161126300100030383038303830383038
10043037232106125482510001000100039831313018303730372415328951000100020003037303711100110000731161126300100030383038303830383038
10043037230041025482510001000100039831313018303730842415329071000100020003037303711100110000731161126300100030383038303830383038
10043037220061254825100010001000398313130183037303724153289510001000200030373037111001100007311611263011100030383038303830383038
1004303723006125482510001000100039831313018303730372415328951000100020003037303711100110000731161126300100030383038303830383038
1004303723006125482510001000100039831313018303730372415328951000100020003037303711100110000731161126300100030383038303830383038
1004303723006125482510001000100039831313018303730372415328951000100020003037303711100110000731161126300100030383038303830383038
1004303722006125482510001000100039831313018303730372415328951000100020003037303711100110000731161126300100030383038303830383038
1004303723006125482510001000100039831313018303730372415328951000100020003037303711100110000731161126300100030383038303830383038
1004303722006125482510001000100039831313018303730372415328951000100020003037303711100110000731161126300100030383038303830383038

Test 2: Latency 1->2

Code:

  uabdl v0.8h, v0.8b, v1.8b
  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)03l2 tlb miss data (0b)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)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)9fa9branch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
1020430037225006129548251010010010000100100005004277313130018300373003728272628741101002001000820020016300373003711102011009910010010000100011171701600296460100001003003830038300383003830038
1020430037225006129548251010010010000100100005004277313130018300373003728272728741101002001000820020016300373003711102011009910010010000100011171801600296470100001003003830038300383003830038
1020430037225006129548251010010010000100100005004277313130018300373003728272628741101002001000820020016300373003711102011009910010010000100011171701600296470100001003003830038300383003830038
1020430037225006129548251010010010000100100005004277313030018300373003728272628741101002001000820020016300373003711102011009910010010000100011171701600296460100001003003830038300383003830038
1020430037225006129548251010010010000100100005004277313130018300373003728265328745101002001000020020000300373003711102011009910010010000100000071011611296340100001003003830038300383003830038
1020430037225006129548251010010010000100100005004277313030018300373003728265328745101002001000020020000300373003711102011009910010010000100000071011611296340100001003003830038300383003830038
1020430037225006129548251010010010000100100005004277313130018300373003728265328745101002001000020020000300373003711102011009910010010000100000071011611296340100001003003830038300383003830038
1020430037225006129548251010010010000100100005004277313130018300373003728265328745101002001000020020000300373003711102011009910010010000100000071011611296340100001003003830038300383003830038
1020430037225006129548251010010010000100100005004277313130018300373003728265328745101002001000020020000300373003711102011009910010010000100000071011611296340100001003003830038300383003830038
10204300372250044129548251010010010000100100005004277313030018300373003728265328745101002001000020020000300373003711102011009910010010000100000071011611296340100001003003830038300383003830038

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0037

retire uop (01)cycle (02)031e3f4e51schedule 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)696d6emap 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)branch mispred nonspec (cb)cdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
1002430037225061295482510010101000010100005042773133001830037300372828732876710010201000020200003003730037111002110910101000010010640216222963010000103003830038300383003830038
1002430037225061295482510010101000010100005042773133001830037300372828732876710010201000020200003003730037111002110910101000010000640216222963010000103003830038300383003830038
1002430037225061295482510010101000010100005042773133001830037300372828732876710010201000020200003003730037111002110910101000010000640216222963010000103003830038300383003830038
10024300372250612954825100101010000101000050427731330018300373003728287328767100102010000202000030037300371110021109101010000106000640216222963010000103003830038300383003830038
1002430037225061295482510010101000010100005042773133001830037300372828732876710010201000020200003003730037111002110910101000010000640224222963010000103003830038300383003830038
1002430037225061295482510010101000010100005042773133001830037300372828732876710010201000020200003003730037111002110910101000010000640216222963010000103003830038300383003830038
1002430037225061295482510010101000010100005042773133001830037300372828732876710010201000020200003003730037111002110910101000010000640216222963010000103003830038300383003830038
1002430037225061295482510010101000010100005042773133001830037300372828732876710010201000020200003003730037111002110910101000010000640216222963010000103003830038300383003830038
1002430037225061295482510010101000010100005042773133001830037300372828732876710010201000020200003003730037111002110910101000010000640216222963010000103003830038300383003830038
1002430037225061295482510010101000010100005042773133001830037300372828732876710010201000020200003003730037111002110910101000010100640216222963010000103003830038300383003830038

Test 3: Latency 1->3

Code:

  uabdl v0.8h, v1.8b, 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)030918191e1f3f4e51schedule 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)st unit uop (a7)l1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
102043003722500000612954825101001001000010010000500427731303001830037300372826532874510100200100002002000030037300371110202100991001001000010000007101161129634100001003003830038300383003830038
102043003722500000612954825101001001000010010000500427731303001830037300372826532874510100200100002002000030037300371110201100991001001000010000007101161129634100001003003830038300383003830038
102043003722500000612954825101001001000010010000500427731313001830037300372826532874510100200100002002000030037300371110201100991001001000010000007101161129634100001003003830038300383003830038
102043003722400000612954825101001001000010010000500427731313001830037300372826532874510100200100002002000030037300371110201100991001001000010000007101161129634100001003003830038300383003830038
1020430037225000002512954825101001001000010010000500427731303001830037300372826532874510100200100002002000030037300371110201100991001001000010000007101161129634100001003003830038300383003830038
102043003722500000612954825101001001000010010000500427731303001830037300372826532874510100200100002002000030037300371110201100991001001000010000007101161129634100001003003830038300383003830038
102043003722500000612954825101001001000010010000500427731303001830037300372826532874510100200100002002000030037300371110201100991001001000010000007101161129634100001003003830038300383008630038
1020430037225000006312954825101001001000010010000500427731303001830037300372826532874510100200100002002000030037300371110201100991001001000010000007101161129634100001003003830038300383003830038
102043003722500000612954825101001001000010010000500427731303001830037300372826532874510100200100002002000030037300371110201100991001001000010000007101161129634100001003003830038300383003830038
102043003722500000612954825101001001000010010000500427731303001830037300372826532874510100200100002002000030037300371110201100991001001000010000007101161129634100001003003830038300383003830038

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0037

retire uop (01)cycle (02)03091e1f3a3f4e51schedule 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)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
10024300372250000612954825100101010000101000050427731313001830037300372828732876710010201000020200003003730037111002110910101000010000000640216222963010000103003830038300383003830038
10024300372240000612954825100101010000101000050427731303001830037300372828732876710010201000020200003003730037111002110910101000010000060640216222963010000103003830038300383003830038
10024300372240000612954825100101010000101000050427731313001830037300372828732876710010201000020200003003730037111002110910101000010000000640216222963010000103003830038300383003830038
10024300372250000612954825100101010000101000050427731303001830037300372828732876710010201000020200003003730037111002110910101000010000000640216222963010000103003830038300383003830038
10024300372250000612954825100101010000101000050427731313001830037300372828732876710010201000020200003003730037111002110910101000010000000640216222963010000103003830038300383003830038
10024300372250000612954825100101010000101000050427731303001830037300372828732876710010201000020200003003730037111002110910101000010000000640216222963010000103003830038300383003830038
10024300372240000612954825100101010000101000050427731303001830037300372828732876710010201000020200003003730037111002110910101000010000000640216222963010000103003830038300383003830038
100243003722500002902954825100101010000101000050427731303001830037300372828732876710010201000020200003003730037111002110910101000010000000640216222963010000103003830038300383003830038
10024300372240000612954825100101010000101000050427731303001830037300372828732876710010201000020200003003730037111002110910101000010000000661316332963010000103003830038300383003830038
100243003722500002312954825100101010000101000050427731303001830037300372828732876710010201000020200003003730037211002110910101000010000000640216222970110000103003830038300383003830038

Test 4: throughput

Count: 8

Code:

  uabdl v0.8h, v8.8b, v9.8b
  uabdl v1.8h, v8.8b, v9.8b
  uabdl v2.8h, v8.8b, v9.8b
  uabdl v3.8h, v8.8b, v9.8b
  uabdl v4.8h, v8.8b, v9.8b
  uabdl v5.8h, v8.8b, v9.8b
  uabdl v6.8h, v8.8b, v9.8b
  uabdl v7.8h, v8.8b, v9.8b
  movi v8.16b, 9
  movi v9.16b, 10

(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)03091e3f51schedule 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 cache writeback (a8)a9acbranch cond mispred nonspec (c5)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
8020420058150094125801001008000010080000500640000020020200392003999730399978010020080000200160000200392003911802011009910010080000100000051102161120036800001002004020040200402004020040
8020420039150004125801001008000010080000500640000020020200392003999730399978010020080000200160000200392003911802011009910010080000100000051101161120036800001002004020040200402004020040
8020420039150004125801001008000010080000500640000120020200392003999730399978010020080000200160000200392003911802011009910010080000100003051101161120036800001002004020040200402004020040
8020420039150004125801001008000010080000500640000020020200392003999730399978010020080000200160000200392003911802011009910010080000100000051101161120036800001002004020040200402004020040
8020420039150004125801001008000010080000500640000120020200392003999730399978010020080000200160000200392003911802011009910010080000100000051101161120036800001002004020040200402004020040
8020420039150004125801001008000010080000500640000020020200392003999730399978010020080000200160000200392003911802011009910010080000100000051101161120036800001002004020040201032004020040
8020420039150004125801001008000010080000500640000120020200392003999730399978010020080000200160000200392003911802011009910010080000100000051101161120036800001002004020040200402004020040
8020420039150004125801001008000010080000500640000020020200392003999730399978010020080000200160000200392003911802011009910010080000100000051101161120036800001002004020040200402004020093
8020420039150004125801001008000010080000500640000020020200392003999730399978010020080000200160000200392003911802011009910010080000100000051101161120036800001002004020040200402004020040
80204200391500034725801001008000010080000500640000020020200392003999730399978010020080000200160000200392003911802011009910010080000100000051101161120036800001002004020040200402004020040

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)18191e1f3f51schedule 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)acbranch mispred nonspec (cb)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
8002420048150000004025800101080000108000050640000002002020039200399996310019800102080000201600002003920039118002110910108000010000050206163520036080000102004020040200402004020040
8002420039150000004025800101080000108000050640000002002020039200399996310019800102080000201600002003920039118002110910108000010000050205165320036080000102004020040200402004020040
8002420039150000004025800101080000108000050640000002002020039200399996310019800102080000201600002003920039118002110910108000010000050205163520036080000102004020040200402004020040
800242003915000029704025800101080000108000050640000002002020039200399996310019800102080000201600002003920039118002110910108000010000050203163520036080000102004020040200402004020040
80024200391500001804025800101080000108000050640000002002020039200399996310019800102080000201600002003920039118002110910108000010000050203163520036080000102004020040200402004020040
8002420039150000004025800101080000108000050640000002002020039200399996310019800102080000201600002003920039118002110910108000010000050203163520036080000102004020040200402004020040
8002420039150000004025800101080000108000050640000002002020039200399996310019800102080000201600002003920039118002110910108000010000050205163520036080000102004020040200402004020040
8002420039150000604025800101080000108000050640000002002020039200399996310019800102080000201600002003920039118002110910108000010000050204165520036080000102004020040200402004020040
800242003915000000402580010108000010800005064000000200202003920039999631001980010208000020160000200392003911800211091010800001000150050205343520036080000102004020040200402009220040
800242003915000101044025800101080000108000050640000002002020039200399996310019800102080000201600002003920039118002110910108000010000050205165520036180000102004020101200402004020040