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

TBL (two register table, 16B)

Test 1: uops

Code:

  tbl v0.16b, { v0.16b, v1.16b }, v2.16b
  movi v0.16b, 1
  movi v1.16b, 2
  movi v2.16b, 3

(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)03191e3f4e51schedule 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
1004203715006116872510001000100026468002018203720371572318951000100030002037203711100110000073216221787100020382038203820382038
1004203715006116872510001000100026468012018203720371572318951000100030002037203711100110000073216221787100020382038203820382038
10042037150726116872510001000100026468012018203720371572318951000100030002037203711100110000073216221787100020382038203820382038
1004203715006116872510001000100026468012018203720371572318951000100030002037203711100110000073216221787100020382038203820382038
1004203715006116872510001000100026468002018203720371572318951000100030002037203711100110000073216221787100020382038203820382038
1004203715006116872510001000100026468002018203720371572318951000100030002037203711100110000073216221787100020382038203820382038
1004203715006116872510001000100026468012018203720371572318951000100030002037203711100110000073216221787100020382038203820382038
1004203715006116872510001000100026468012018203720371572318951000100030002037203711100110000073216221787100020382038203820382038
1004203715006116872510001000100026468002018203720371572318951000100030002037203711100110000073216221787100020382038203820382038
1004203715006116872510001000100026468002018203720371572318951000100030002037203711100110000073216221787100020382038203820382038

Test 2: Latency 1->2

Code:

  tbl v0.16b, { v0.16b, v1.16b }, v2.16b
  movi v0.16b, 1
  movi v1.16b, 2
  movi v2.16b, 3

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code): 2.0037

retire uop (01)cycle (02)03mmu table walk data (08)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)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)a9acc2cfd0d5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
1020420037150000570061196872510100100100001001000050028476801200182003720037184223187451010020010000200300002003720037111020110099100100100001000000000710131623197910100001002003820038200382003820038
1020420037150000120061196872510100100100001001000050028476801200182003720037184223187451010020010000200300002003720037111020110099100100100001000002000710121622197910100001002003820038200382003820038
10204200371500003691320103196872510100100100001001060850028476801200182003720037184223187451010020010000200300002003720037111020110099100100100001000000000710121623197910100001002003820038200382003820038
102042003715000030061196872510100100100001001000050028476800200182003720037184223187451010020010000200300002003720037111020110099100100100001000000000710121622197910100001002003820038200382003820038
102042003715000030061196872510100113100001001000050028476801200542003720037184303187451010020210000200304922003720037111020110099100100100001000000060710121622197910100001002003820038200382003820038
1020420037150000180061196874410100100100001001000050028476800200182003720037184223187451010020010000200300002003720037111020110099100100100001000001060010712121622197910100001002003820038200382003820230
1020420037149000690061196872510100100100001001000050028476800200182003720037184223187451010020010000200300002003720037111020110099100100100001000000000710121622197910100001002003820038200382003820038
1020420037150000180061196872510100100100001001000050028476800200182003720037184223187451010020010000200300002003720037111020110099100100100001000001030710121622197910100001002003820038200382003820038
10204200371500001800631196872510100100100001001000050028476800200182003720037184223187451010020010000200300002003720037111020110099100100100001000000000712121622199130100001002003820038200382003820038
10204200371500004200103196872510100100100001001000050028476800200182003720037184223187451010020010000200300002003720179111020110099100100100001000001060710121622197910100001002003820038200382003820038

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0037

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)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 tlb access (a0)l1d tlb miss (a1)ld unit uop (a6)l1d cache writeback (a8)acc2branch cond mispred nonspec (c5)branch mispred nonspec (cb)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
10024200371500000006119687251001010100001010000502847680200182003720037184443187671001020100002030000200372003711100211091010100001000000000640216221978510000102003820038200382003820038
10024200371500000006119687251002210100121010000502847680200182003720037184443187671001020100002030000200372003711100211091010100001000000000640116231978510000102003820038200382003820038
100242003715000002406119687251001010100001010000502847680200182003720037184443187671001020100002030000200372003711100211091010100001000000000640216221978510000102003820038200382003820038
10024200371500000006119687251001010100001010000502847680200182003720037184443187671001020100002030000200372003711100211091010100001000000000640216221978510000102003820038200382003820038
100242003715000001506119687251001010100001010000502847680200182003720037184443187671001020100002030000200372003711100211091010100001000000000640216221978510000102003820038200382003820038
100242003715000003906119687251001010100001010000502847680200182003720037184443187671001020100002030000200372003711100211091010100001000000000685216221978510000102003820038200852022820276
100242022615210055943522015196329810070121000010101527228540952016220273202731845920187861077222108252232511202762022661100211091010100001022008213400746648422000310000102027520228202762027520271
1002420274152115468444024461964311710058101001212107605028540952016220227202621845326188591077422108352031998203132027261100211091010100001022000000640216221978510000102003820038200382003820276
100242022615110556095082463196439910075121006010107608328540952019820272202271845924188541077020106742031476202762027361100211091010100001002010700745342332001710000102031920277202742026420320
10024202721521136996528296419621134100481410072101091272285537820234203222032018468211884210922241100120314822027520320611002110910101000010002111970200766277222007510000102036820418204112027720459

Test 3: Latency 1->3

Code:

  tbl v1.16b, { v0.16b, v1.16b }, v2.16b
  movi v0.16b, 1
  movi v1.16b, 2
  movi v2.16b, 3

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code): 2.0037

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)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)a9acc2cfd0d5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
1020420037150100100090198196872510100100100001001000050028476800200182003720037184223187451010020010000200300002003720037111020110099100100100001000000000713041645197910100001002003820038200382003820038
1020420037150100100000170196872510100100100001001000050028476800200182003720037184223187451010020010000200300002003720037111020110099100100100001000000000713051644197910100001002003820038200382003820038
10204200371501001000001540196872510100100100001001000050028476800200182003720037184223187451010020010000200300002003720037111020110099100100100001000000000713061655197910100001002003820038200382003820038
1020420037150100100000165196872510100100100001001000050028476800200182003720037184223187451010020010000200300002003720037111020110099100100100001000000000713051655197910100001002003820038200382003820038
10204200371501001000120165196872510100100100001001000050028476800200542003720037184223187451010020010000200300002003720037111020110099100100100001000000000713051653197910100001002003820038200382003820038
1020420037149100100000186196872510100100100001001000050028476800200182003720037184223187451010020010174200300002003720037111020110099100100100001000000000716031635197910100001002003820038200382003820038
10204200371501001000180165196872510100100100001001000050028476800200182003720037184223187451010020010000200300002003720037111020110099100100100001000000000713031655197910100001002003820038200382003820038
1020420037150100100030270196872510100100100001001000050028476800200182003720037184223187451010020010000200300002003720037111020110099100100100001000000000713031666197910100001002003820038200382003820038
1020420037150100100000165196872510100100100001001000050028476800200182003720037184223187451010020010000200300002003720037111020110099100100100001000000000713031663197910100001002003820038200382003820038
10204200371501001000120165196874310100100100001001000050028476800200182003720037184223187451010020010000200300002003720037111020110099100100100001000000000713041644197910100001002003820038200382003820038

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0037

retire uop (01)cycle (02)031e1f3f4e51schedule 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)9fcfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
10024200371501206119687251001010100001010000502847680120018020037200371844431876710010201000020300002003720037111002110910101000010640216231978510000102003820038200382003820038
1002420037150306119687251001010100001010000502847680020018020037200371844431876710010201000020300002003720037111002110910101000010640216221978510000102003820038200382003820038
1002420037150210886119687251001010100001010000502847680020018020037200371844431876710010201000020300002003720037111002110910101000010640216321978510000102003820038200382003820038
1002420037150006119687251001010100001010000502847680020018020037200371844431876710010201000020300002003720037111002110910101000010640216321978510000102003820038200382003820038
10024200371502706119687251001010100001010000502847680020037020037200371844431876710010201000020300002003720037111002110910101000010640216221978510000102003820038200382003820038
1002420037150006119687251001010100001010000502847680020018020037200371844431876710010201000020300002003720037111002110910101000010640216221978510000102003820038200382003820038
1002420037150006119687251001010100001010000502847680020018020037200371844431876710010201000020300002003720037111002110910101000010640216221978510000102003820038200382003820038
100242003715023706119687251001010100001010000502847680020018020037200371844431876710010201000020300002003720037111002110910101000010640216321978510000102003820038200382003820038
1002420037150006119687251001010100001010000502847680020018020037200371844431876710010201000020300002003720037111002110910101000010640216221978510000102003820038200382003820038
1002420037150906119687251001010100001010000502847680020018020037200371844431876710010201000020300002003720037111002110910101000010640216221978510000102003820038200382003820038

Test 4: Latency 1->4

Code:

  tbl v2.16b, { v0.16b, v1.16b }, v2.16b
  movi v0.16b, 1
  movi v1.16b, 2
  movi v2.16b, 3

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code): 2.0037

retire uop (01)cycle (02)031e1f3f4e51schedule 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)9facc2cfd0d5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
102042003715042061196872510100100100001001000050028476800200182003720037184223187451010020010000200300002003720037111020110099100100100001000071002162219791100001002003820038200382003820038
1020420037150016861196872510100104100001001015250028476800200182003720037184223187451010020010000200300002003720037111020110099100100100001000071002162219791100001002003820038200382003820038
10204200371500061196872510100100100001001000050028476801200182003720037184223187451010020010000200300002003720037111020110099100100100001000071002162219791100001002003820038200382003820038
10204200371500061196872510100100100001001000050028476801200182003720037184223187451010020010000200300002003720037111020110099100100100001000071002162219791100001002003820038200382003820038
10204200371503061196872510100100100001001000050028476801200182003720037184223187451010020010000200300002003720037111020110099100100100001000071012162219791100001002003820038200382003820038
10204200371500061196872510100100100001001000050028476801200182003720037184223187451010020010000200300002003720037111020110099100100100001000071012162219791100001002003820038200382003820038
10204200371509061196872510100100100001001000050028476801200182003720037184223187451010020010000200300002003720037111020110099100100100001000071212162319791100001002003820038200382003820038
10204200371500061196872510100100100001001000050028476801200182003720037184223187451010020010000200300002003720037111020110099100100100001000071212162219791100001002003820038200382003820038
1020420037150270061196872510100100100001001000050028476801200182003720037184223187451010020010000200300002003720037111020110099100100100001000071012162219791100001002003820038200382003820038
10204200371500061196872510100100100001001000050028476801200182003720037184223187451010020010000200300002003720037111020110099100100100001000071012163219791100001002003820038200382003820038

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0037

retire uop (01)cycle (02)03mmu table walk data (08)l2 tlb miss data (0b)18191e1f3f4e5051schedule 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)a9c2branch cond mispred nonspec (c5)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
10024200371500000006119687200212510010101000010100005028476800200182003720037184443187671001020100002030000200372003711100211091010100001000006402162219785010000102003820038200382003820038
10024200371500000006119687200212510010101000010100005028476800200212003720037184443187671001020100002030000200372003711100211091010100001000006402162219785010000102003820038200382003820038
100242003715000002706119687200212510010101000010100005028476801200182003720085184443187671001020100002030000200372003711100211091010100001000006402162219785010000102003820038200382003820038
1002420037150000000611968702510010101000010100005028476800200182003720037184443187671001020100002030000200372003711100211091010100001000006402162219785010000102003820038200382003820038
1002420037150000000611968702510010101000010100005028476801200182003720037184443187671001020100002030000200372003711100211091010100001000006402242219785010000102003820038200382003820038
1002420037150000060611968702510010101000010100005028476801200182003720037184443187671001020100002030000200372003711100211091010100001000006402163219785010000102003820038200382003820038
1002420037150000000611968702510010101000010100005028476800200182003720037184443187671001020100002030000200372003711100211091010100001000006402162319785010000102003820038200382003820038
1002420037150000000611968702510010101000010100005028476801200182003720037184443187671001020100002030000200372003711100211091010100001000006402162219785010000102003820038200382003820038
1002420037150000000611968702510010101000010100005028476801200182003720037184443187671001020100002030000200372003711100211091010100001000006402162219785010000102003820038200382003820038
100242003715000001201891968704410046101000010100005028476801200182003720037184513187671001020101692030000202762003711100211091010100001000006402162219785010000102003820038200382003820038

Test 5: throughput

Count: 8

Code:

  tbl v0.16b, { v8.16b, v9.16b }, v10.16b
  tbl v1.16b, { v8.16b, v9.16b }, v10.16b
  tbl v2.16b, { v8.16b, v9.16b }, v10.16b
  tbl v3.16b, { v8.16b, v9.16b }, v10.16b
  tbl v4.16b, { v8.16b, v9.16b }, v10.16b
  tbl v5.16b, { v8.16b, v9.16b }, v10.16b
  tbl v6.16b, { v8.16b, v9.16b }, v10.16b
  tbl v7.16b, { v8.16b, v9.16b }, v10.16b
  movi v8.16b, 9
  movi v9.16b, 10
  movi v10.16b, 11

(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 instruction (0a)l2 tlb miss data (0b)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)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)a9accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
802042005815000111328840258028610080000100800005006400000200192003820038997339996801002008000020024000020038200381180201100991001008000010000001745511021611200350800001002003920039200892008820039
8020420038150000012040258019410080000100800005006400000200192003820038997339996801002008000020024000020038200381180201100991001008000010000000511011611200350800001002003920039200392003920039
802042003815000020040258010010080000100800005006400000200192003820038997339996801002008000020024000020038200381180201100991001008000010000000512811611200350800001002003920039200392003920039
8020420038150000000402580100100800001008000050064000002001920038200389973399968010020080000200240000200382003811802011009910010080000100005109511011611200350800001002003920039200392003920039
802042003815000000040258010010080000100800005006400001200192003820038997339996801002008000020024000020038200381180201100991001008000010000000511011611200350800001002003920039200392003920039
802042003815000000040258010010080000100800005006400000200192003820038997339996801002008000020024000020038200381180201100991001008000010000000511011611200350800001002003920039200392003920039
802042003815000000040258010010080000100800005006400000200192003820038997339996801002008000020024000020038200381180201100991001008000010000000511011611200350800001002003920039200392003920039
802042003815000000040258010010080000100800005006400001200192003820038997339996801002008000020024000020038200381180201100991001008000010000500511011611200350800001002003920039200392003920039
802042003815000000040258010010080000100800005006400000200192003820038997339996801002008000020024000020038200381180201100991001008000010000000511011611200350800001002003920039200392003920039
802042003815000000061258010010080000100800005006400001200192003820038997339996801002008000020024000020038200381180201100991001008000010000000511011611200350800001002003920039200392003920039

1000 unrolls and 10 iterations

Result (median cycles for code divided by count): 0.2505

retire uop (01)cycle (02)03l1i tlb fill (04)l2 tlb miss data (0b)193f51schedule 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 mispred nonspec (cb)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
80024200481501003925800101080000108000050640000020019200382003899963100188001020800002024000020038200381180021109101080000100305020201623182003580000102003920039200392003920039
80024200381500003925800101080000108000050640000020019200382003899963100188001020800002024000020038200381180021109101080000101005020231619232003580000102003920039200392003920039
80024200381500003925800101080000108000050640000020019200382003899963100188001020800002024000020038200381180021109101080000100005020191623192003580000102003920039200392003920039
80024200381500003925800101080000108000050640000120019200382003899963100188001020800002024000020038200381180021109101080000101005020231619232003580000102003920039200392003920039
80024200381500003925800101080000108000050640000120019200382003899963100188001020800002024000020038200381180021109101080000101005020201623202003580000102003920039200392003920039
80024200381500013925800101080000108000050640000120019200382003899963100188001020800002024000020038200381180021109101080000100005020191623182003580000102003920039200392003920039
80024200381500003925800101080000108000050640000120019200382003899963100188001020800002024000020038200381180021109101080000100005020171622182003580000102003920039200392003920039
800242003815000073925800101080000108000050640000120019200382003899963100188001020800002024000020038200381180021109101080000100005020231614232003580000102003920039200392003920039
80024200381500003925800101080000108000050640000120019200382003899963100188001020800002024000020038200381180021109101080000102305020131623142003580000102003920039200392003920039
80024200381500003925800101080000108000050640000120019200382003899963100188001020800002024000020038200381180021109101080000108005020231623232003580000102003920039200392003920039