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

UQADD (vector, 8B)

Test 1: uops

Code:

  uqadd v0.8b, 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)0318191e3f4e51schedule 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
10043084230006125482510001000100039831313018303730372415328951000100020003037303711100110000073116112630100030383038303830843038
100430372300017025482510001000100039831303018303730372415328951000100020003037303711100110000073116112630100030383038303830383038
10043037220006125482510001000100039831303018303730372415328951000100020003037303711100110000073116112630100030383038303830383038
10043037230006125482510001000100039831303018303730372415328951000100020003037303711100110000073116112630100030383038303830383038
10043037220008425482510001000100039831303018303730372415328951000100020003037303711100110000073116112630100030383038303830383038
10043037220006125482510001000100039831303018303730372415328951000100020003037303711100110000073116112630100030383038303830383038
10043037230006125482510001000100039831303018303730372415328951000100020003037303711100110000073116112630100030383038303830383038
100430372200917025482510001000100039831303018303730372415328951000100020003037303711100110000073116112630100030383038303830383038
10043037230066125482510001000100039831313018303730372415328951000100020003037303711100110000073116112630100030383038303830383038
10043037230006125482510001000100039831313018303730372415328951000100020003037303711100110000073116112630100030383038303830383038

Test 2: Latency 1->2

Code:

  uqadd v0.8b, 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)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)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
10204300372250000061295482510100100100001001000050042773131300183008530037282650328745101002001016420020000300373003711102011009910010010000100200028307101161129634100001003003830038300383003830038
102043003722500000103295482510100100100001001000063842773130300183003730037282650328764101002001000020020000300373003711102011009910010010000100000007121161129634100001003003830038300383003830038
10204300372250000061295482510100100100001001000050042773130300183003730037282650328745101002001000020020000300373003711102011009910010010000100000007100161129634100001003003830038300383003830038
10204300372250000061295482510100100100001001000050042773131300183003730037282650328745101002001000020020000300373003711102011009910010010000100000007101161129634100001003003830038300383003830038
102043003722500012061295482510100100100001001000050042773131300183003730037282650328745101002001000020020000300373003711102011009910010010000100003237331252129670100001003003830038300383003830038
102043003722510008861295482510100100100001001000050042773130300183003730037282650328745101002001000020020000300373003711102011009910010010000100000007101161129634100001003003830038300383003830038
10204300372250000061295482510100100100001001000050042773130300183003730037282650328745101002001000020020000300373003711102011009910010010000100000037101161129634100001003003830038300383003830038
10204300372250000061295482510100100100001001000050042773131300183003730037282650328745101002001000020020000300373003711102011009910010010000100000007101161129634100001003003830038300383003830038
102043003722500000103295482510100100100001001000050042773130300183003730037282650328745101002001000020020000300373003711102011009910010010000100000007101161129634100001003003830038300383003830038
10204300372250000061295482510100100100001001000050042773130300183003730037282650328745101002001000020020000300373003711102011009910010010000100000007101161129634100001003003830038300383003830038

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0037

retire uop (01)cycle (02)03mmu table walk instruction (07)mmu table walk data (08)09l2 tlb miss instruction (0a)l2 tlb miss data (0b)18191e1f3a3f4e51schedule 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)60696b6d6emap 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)a9acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
10024300372250000000000612954825100101010000101000050427731313001803003730037282873287671001020100002020000300373003711100211091010100001000000006403162229630010000103003830038300383003830038
100243003722500000000006129548251001010100001010000504277313130018030037300372828732876710010201000020200003003730037111002110910101000010000009306402162229630010000103003830038300383003830038
10024300372250000000000612954825100101010000101000050427731313001803003730037282873287671001020100002020000300373003711100211091010100001000000006402162229630010000103003830038300383003830038
10024300372250000000000612954825100101010000101000050427731313001803003730037282873287671001022100002020000300373003711100211091010100001000000006402162229630010000103003830038300383003830038
10024300372240000000000612954825100101010000101000050427731313001803003730037282873287671001020100002020000300373003711100211091010100001000000006402162229630010000103003830038300383003830038
10024300372250000000000612954825100101010000101000050427731313001803003730037282873287671001020100002020000300373003711100211091010100001000000006402162229630010000103003830038300383003830038
10024300372250000000000612954825100101010000101000050427731313001803003730037282873287671001020100002020326300373003711100211091010100001000000006402162229630010000103003830038300383003830038
10024300372250000000000612954825100101010000101000050427731313001803003730037282873287671001020100002020000300373003711100211091010100001000000006402162229630010000103003830038300383003830038
100243003722500000003900612954825100101010000101000050427731303001803003730037282873287671001020100002020000300373003711100211091010100001000000006402162229630010000103003830038300383003830038
10024300372250000000000612954825100101010000101000050427731303001803003730037282873287671001020100002020000300373003711100211091010100001000000006402162229630010000103003830038300383003830038

Test 3: Latency 1->3

Code:

  uqadd v0.8b, 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)03mmu table walk data (08)09l2 tlb miss data (0b)181e1f3f4e51schedule 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)acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
1020430037225000000612954825101001001000010010000500427731313001830037300372826532874510100200100002002000030037300371110201100991001001000010000000071011611296340100001003003830038300383003830038
1020430037225000000612954825101001001000010010000500427731313001830037300372826532874510100200100002002000030037300371110202100991001001000010000000071011611296340100001003003830038300383003830038
1020430037224000000612954825101001001000010010000500427731313001830037300372826532874510100200100002002000030037300371110201100991001001000010000000071011611296340100001003003830038300383003830038
1020430037225000000612954825101001001000010010000500427731313001830037300372826532874510100200100002002000030037300371110201100991001001000010000003071011611296540100001003003830038300383003830038
1020430037225000000612954825101001001000010010000500427731313001830037300372826532874510100200100002002000030037300371110201100991001001000010000000071011611296340100001003003830038300383003830038
1020430037225000000612954825101001001000010010000500427731313001830037300372826532874510100200100002002000030037300371110201100991001001000010000000071011611296340100001003003830038300383003830038
1020430037225000000612954825101001001000010010000500427731313001830037300372826532874510100200100002002000030037300371110201100991001001000010000000071011611296340100001003003830038300383003830038
1020430037225000000612954825101001001000010010000500427731313001830037300372826532874510100200100002002000030037300371110201100991001001000010000000071011611296340100001003003830038300383003830038
1020430037225000000612954825101001001000010010000500427731303001830037300372826532874510100200100002002036430037300371110201100991001001000010000000071011611296340100001003003830038300383003830038
1020430037225000000612954825101001001000010010000500427731313001830037300372826532874510100200100002002000030037300371110201100991001001000010000000071011611296340100001003003830038300383003830038

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0037

retire uop (01)cycle (02)03mmu table walk instruction (07)181e3f4e51schedule 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)696b6d6emap 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 cond mispred nonspec (c5)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
100243003722500061295482510010101000010100005042773133001803003730037282873287671001020100002020000300373003711100211091010100001000640316222963010000103003830038300383003830038
100243003722500061295482510010101000010100005042773133001803003730037282873287671001020100002020000300373003711100211091010100001000640216222963010000103003830038300383003830038
100243003722800061295482510010101000010100005042773133001803003730037282873287671001020100002020000300373003711100211091010100001040640216222963010000103003830038300383003830038
100243003722500061295482510010101000010100005042773133001803003730037282873287671001020100002020000300373003711100211091010100001000640216222963010000103003830038300383003830038
100243003722400061295482510010101000010100005042773133001803003730037282873287671001020100002020000300373003711100211091010100001010640216222963010000103003830038300383003830038
100243003722500061295482510010101000010100005042773133001803003730037282873287671001020100002020000300373003711100211091010100001000640216222970210000103003830038300383003830038
100243003722500061295482510010101000010100005042773133001803003730037282873287671001020100002020000300373003711100211091010100001000640216222963010000103003830038300383003830038
100243003723200361295484410010101000010100005042773133001803003730037282873287671001020100002020000300373003711100211091010100001000640216222963010000103003830038300383003830038
100243003722500061295482510010101000010100005042773133001803003730037282873287671001020100002020000300373003711100211091010100001000640216222963010000103003830038300383003830038
10024300372250017161295482510010101000010100005042773133001803003730037282873287671001020100002020000300843003711100211091010100001000642216222963010000103003830038300383003830038

Test 4: throughput

Count: 8

Code:

  uqadd v0.8b, v8.8b, v9.8b
  uqadd v1.8b, v8.8b, v9.8b
  uqadd v2.8b, v8.8b, v9.8b
  uqadd v3.8b, v8.8b, v9.8b
  uqadd v4.8b, v8.8b, v9.8b
  uqadd v5.8b, v8.8b, v9.8b
  uqadd v6.8b, v8.8b, v9.8b
  uqadd v7.8b, 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)03l2 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)9fld unit uop (a6)l1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
80204200391500089741258010010080000100800005006400001200202003920347997339997801002008010420016021420094200951180201100991001008000010000153511031612200360800001002004020040200402004020040
802042003915000041258010010080000100800005006400001200202003920039997339997801002008000020016000020039200391180201100991001008000010000162511011611200360800001002004020040200402004020040
8020420039150010412580100100800001008000050064000012002020039200399973399978010020080000200160000200392003911802011009910010080000100000511011611200360800001002004020040200402004020040
8020420039150000832580100100800001008000050064000012002020039200399973399978010020080000200160000200392003911802011009910010080000100000511011611200360800001002004020040200402004020040
8020420039150000412580100100800001008000050064000012002020039200399973399978010020080000200160000200392003911802011009910010080000100000511011611200360800001002004020040200402004020040
802042003915000041258010010080000100800005006400001200202003920039997339997801002008000020016000020039200392180201100991001008000010000159511011612200360800001002004020040200402004020040
8020420039150000412580100100800001008000050064000012002020039200399973399978010020080000200160000200392003911802011009910010080000100000511011611200360800001002004020040200402004020040
802042003914900183412580100100800001008000050064000012002020039200399973399978010020080000200160000200392003911802011009910010080000100000511011611200360800001002004020040200402004020040
8020420039150000412580100100800001008000050064000012002020039200399973399978010020080000200160000200392003911802011009910010080000100000511011611200360800001002004020040200402004020040
8020420039150000412580100100800001008000050064000012002020039200399973399978010020080000200160000200392003911802011009910010080000100000511011611200360800001002004020040200402004020040

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 instruction (0a)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)l1d tlb miss (a1)l1d cache writeback (a8)a9acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
800242004815000000000040258001010800001080000506400000200202003920039999631001980010208000020160000200392003911800211091010800001000000050201161120036080000102004020040200402004020040
800242003915000000100040258001010800001080000506400001200202003920039999631001980010208000020160000200392003911800211091010800001000003050201161120036080000102004020040200402004020040
800242003915000000000040258001010800001080000506400000200202003920039999631001980010208000020160000200392003911800211091010800001000306050201161120036080000102004020040200402004020040
8002420039150000000120040258001010800001080000506416040200202003920039999681001980010208000020160000201902003951800211091010800001000209050201161120036080000102004020040200402004020040
800242003915000000000040258001010800001080000506400001200202003920039999631001980010208000020160000200392003911800211091010800001000000050201161120036080000102004020040200402004020040
800242003915200000000040258001010800001080000506400001200202019220039999631001980010208000020160000200392003911800211091010800001000000050201161120036080000102004020040200402004020040
800242003915000000000040258001010800001080000506400001200202003920039999631001980010208000020160000200392003911800211091010800001000000050201161120036080000102004020040200402004020040
800242003915000000000040258001010800001080000506400000200202003920039999631001980010208000020160000200392003911800211091010800001000000050201161120036080000102004020040200402004020040
800242003915000000000040258001010800801080000506400001200202003920039999631001980010208000020160000200392003911800211091010800001000000050201161120036080000102004020040200402004020040
80024200391500000004200040258001010800001080000506400001200202003920039999631001980010208000020160000200392003911800211091010800001002000050201161120036080000102004020040200402004020040