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

ZIP1 (vector, 4H)

Test 1: uops

Code:

  zip1 v0.4h, v0.4h, v1.4h
  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)03mmu table walk data (08)09l2 tlb miss data (0b)18191e1f3a3f4e51schedule 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 tlb access (a0)l1d tlb miss (a1)ld unit uop (a6)l1d cache writeback (a8)a9acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
100420371600000000611687251000100010002646800201820372037157231895100010002000203720371110011000120000073116111787100020382038203820382038
100420371600000000611687251000100010002646800201820372037157231895100010002000203720371110011000000000073116111787100020382038203820382038
1004203716000000006116872510001000100026468012018203720371572318951000100020002037203711100110000000021073116111787100020382038203820382038
100420371500000000611687251000100010002646801201820372037157231895100010002000203720371110011000000100073116111787100020382038203820382038
100420371500000000611687251000100010002646801201820372037157231895100010002000203720371110011000000003073116111787100020382038203820382038
1004203716000000006116872510001000100026468012018203720371572318951000100020002037203711100110000000021073116111787100020382038203820382038
10042037150001013200611687251000100010002646800201820372037157231895115210002000203720371110011000000000073116111787100020382038203820382038
100420371500000000611687251000100010002646800201820372037157231895100010002000208520371110011000000303073116111787100020382038203820382038
1004203715000000011031687251000100010002646800201820372037157231895100010002000203720371110011000000003073116111787100020382038203820382038
100420371600000000611687251000100010002646800201820372037157231895100010002000203720371110011000000003073116111787100020382038203820382038

Test 2: Latency 1->2

Code:

  zip1 v0.4h, v0.4h, v1.4h
  movi v0.16b, 1
  movi v1.16b, 2

(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)09l2 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)a9acc2branch cond mispred nonspec (c5)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
102042003715500000150061196872510100100100001001000050028476801200182003720037184223187451010020010000200200002003720037111020110099100100100001000000000071021622197910100001002003820038200382003820038
102042003715500000150061196872510100100100001001000050028476801200182003720037184223187451010020010000200200002003720037111020110099100100100001000000000071021622197910100001002003820038200382003820038
10204200371550000000061196872510100100100001001000050028476800200182003720037184223187451010020010000200200002003720037111020110099100100100001000000000071021622197910100001002003820038200382003820038
102042003715600000120061196872510100100100001001000050028476800200182003720037184223187451010020010000200200002003720037111020110099100100100001000001000071021622197910100001002003820038200382003820038
1020420037156000001200103196872510100100100001001000050028476800200182003720037184223187451010020010000200200002003720037111020110099100100100001000000000071021622197910100001002003820038200382003820038
1020420037156000001050061196872510100100100001001000050028476800200182003720037184223187451010020010000200200002003720037111020110099100100100001000000000071021622197910100001002003820038200382003820038
102042003715600000480061196872510100100100001001000050028476800200182003720037184223187451010020010000200200002003720037111020110099100100100001000000000071021622198080100001002003820038200382003820038
102042003715500000210061196872510100100100001001000050028476800200182003720037184223187451010020010000200200002003720037111020110099100100100001000000000071021622197910100001002003820038200382003820038
10204200371550000000061196872510100100100001001000050028476801200182003720037184223187451010020010000200200002003720037111020110099100100100001000000000071021622197910100001002003820038200382003820038
10204200371560000000061196872510100100100001001000050028476800200182003720037184223187451010020010000200200002003720037111020110099100100100001000000000071021622197910100001002003820038200382003820038

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0037

retire uop (01)cycle (02)0309l2 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)9fl1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
1002420037155000437196872510010101000010100005028476800200182003720037184443187671001020100002020000200372003711100211091010100001000640216221978510000102003820131200382003820038
100242003715500061196872510010101000010100005028476801200542003720037184443187671001020100002020000200372003711100211091010100001000640216221978510000102003820038200382003820038
100242003715500061196872510010101000010100005028476800200182003720037184443187671001020100002020000200372003711100211091010100001000640216221978510000102003820038200382003820038
100242003715500084196872510010101000010100005028476800200182003720037184443187671001020100002020000200372003711100211091010100001000640216221978510000102003820038200382003820038
1002420037155004561196872510010101000010100005028476800200182003720037184443187671001020100002020000200372003711100211091010100001000640216221978510000102003820038200382003820038
100242003715000061196872510010101000010100005028476800200182003720037184443187671001020100002020000200372003711100211091010100001000640216221992910000102003820038200382003820038
100242003715000061196872510010101000010100005028476801200182003720037184443187671001020100002020000200372003711100211091010100001000640216321978510000102003820038200382003820038
100242003714900061196872510010101000010100005028476801200182003720037184443187671001020100002020000200372003711100211091010100001000640216221978510000102003820038200382003820038
100242003715000061196872510010101000010100005028476800200182003720037184443187671001020100002020000200372003711100211091010100001000640216221978510000102003820038200382003820038
100242003715000061196872510010101000010100005028476801200182003720037184443187671001020100002020000200372003711100211091010100001000640216221978510000102003820038200382003820038

Test 3: Latency 1->3

Code:

  zip1 v0.4h, v1.4h, v0.4h
  movi v0.16b, 1
  movi v1.16b, 2

(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)18191e3f4e51schedule 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)acc2branch 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
1020420037155000276119687251010010010000100100005002847680120018200372003718429718740101002001000820020016200372022611102011009910010010000100000000011171701600198020100001002003820038200382003820038
1020420037156004061196412510100100100001001000050028476801200182003720037184292418741101002001000820020016200372003711102011009910010010000100000000011171701600198010100001002003820038200382003820038
1020420037155000063119687251010010010000100100005002847680120018200372003718429718741101002001000820020016200372003711102011009910010010000100000000011171701600198010100001002003820038200382003820083
102042003715500006119687251010010010000100100005002847680120018200372003718429618741101002001000820020016200372003711102011009910010010000100000000011171701600199090100001002003820038200382003820133
102042022615500006119687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100203000000071011611197910100001002003820038200382003820038
1020420037156000366119687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100000000000071011611197910100001002003820038200382003820038
1020420037155000061196872510100100100001001000050028476801200182003720037184222118745101002001000020020000200372003711102011009910010010000100000000000071011611197910100001002003820038200382003820038
102042003715500006119687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100000000000071011611197910100001002003820038200382003820038
102042003715500006119687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100000010000071011611197910100001002003820038200382003820038
1020420037155000126119687251010010010000100100005002847680120018200372003718422318745101002021000020020000200372003711102011009910010010000100000003000080511611197910100001002003820038200382003820038

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0037

retire uop (01)cycle (02)031e3f494e51schedule 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)acc2branch cond mispred nonspec (c5)branch mispred nonspec (cb)cfd0d5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
1002420037155396101968725100101010000101000050284768002001820037200371844431876710010201000020200002003720037111002110910101000010000006400316331978510000102003820038200382003820038
100242003715506101968725100101010000101000050284768012001820037200371844431876710010201000020200002003720037111002110910101000010030006400316331978510000102003820038200382003820038
100242003715506101968725100221010000101000050284768012001820037200371844431876710010201000020200002003720037111002110910101000010000006400316331978510000102003820038200382003820038
100242003716112173251968725100101010000101000050284768002001820037200371844431876710010201000020200002003720037111002110910101000010000006400316331978510000102003820038200382003820038
100242003719306101968725100101010000101000050284768012001820037200371844431876710010201000020200002003720037111002110910101000010000006400316331978510000102003820038200382003820038
100242003715506101968725100101010000101000050284768012001820037200371844431876710010201000020200002003720037111002110910101000010000006400316331978510000102003820038200382003820038
100242003715506101968725100101010000101000050284768012001820037200371844431876710010201000020200002003720037111002110910101000010000006400316331978510000102003820038200382003820038
10024200371554810301968725100101010000101000050284768012001820037200371844431876710010201000020200002003720037111002110910101000010000006400316331978510000102003820038200382003820038
1002420037156656401968725100101010000101000050284768012001820037200371844431876710010201000020200002003720037111002110910101000010000006400316331978510000102003820038200382003820038
100242003715506101968725100101010000101000050284768012001820037200371844431876710010201000020200002003720037111002110910101000010000006400316331978510000102003820038200382003820038

Test 4: throughput

Count: 8

Code:

  zip1 v0.4h, v8.4h, v9.4h
  zip1 v1.4h, v8.4h, v9.4h
  zip1 v2.4h, v8.4h, v9.4h
  zip1 v3.4h, v8.4h, v9.4h
  zip1 v4.4h, v8.4h, v9.4h
  zip1 v5.4h, v8.4h, v9.4h
  zip1 v6.4h, v8.4h, v9.4h
  zip1 v7.4h, v8.4h, v9.4h
  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)0318191e3a3f51schedule 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? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
80204200381550000515258010010080000100800005006400000200192003820038997339996801002008000020016000020038200381180201100991001008000010000000511021611200350800001002011320193201132013920039
8020420038155000040258010010080000100800005006400000200192003820038997339996801002008000020016000020038200381180201100991001008000010000000511011611200350800001002003920039200392003920039
80204200381550000402580100100800001008000050064000012001920038200389973810023802052008009620016019020038200871180201100991001008000010000000511011611200350800001002003920395201092008820088
8020420038155110068258010010080000100800005006400000200192003820038997339996801002008000020016000020038200381180201100991001008000010000000511011611200350800001002003920039200392003920039
8020420038155000040258010010080000115800005006400000200192003820038997339996801002008000020016000020038200381180201100991001008000010000000511011611200350800001002003920039200392003920039
8020420038155000040258010010080000100800005006400001200192003820038997339996801002008000020016000020038200381180201100991001008000010000000511011611200350800001002003920039200392003920039
8020420038155000061258010010080000100800005006400001200192003820038997339996801002008000020016000020038200381180201100991001008000010000000511011611200350800001002003920039200392003920039
80204200381550000402580100100800001008000050064000002001920038200389973399968010020080000200160000200382003811802011009910010080000100000005110116112003510800001002003920039200392003920039
80204200381610012040258010010080000100800005006400000200192003820038997339996801002008000020016000020038200381180201100991001008000010000000511011611200350800001002003920039200392003920039
8020420038155000040258010010080000100800005006400001200192003820038997339996801002008000020016000020038200381180201100991001008000010000000511011611200350800001002003920039200392003920039

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 data (0b)1e1f3f51schedule 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 miss (a1)st unit uop (a7)l1d cache writeback (a8)a9accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)ea? simd retires (ee)? int retires (ef)f5f6f7f8fd
8002420039155100003925800101080000108000050640000200192003820038999631001880010208009720160000200382003811800211091010800001021023502051667200350080000102003920039200392003920039
800242003815500008848125800101080000108000050640000200192003820038999631001880010208000020160000200382003811800211091010800001000000502081676200350080000102003920039200392003920039
8002420038155000003925800101080000108000050640000200192003820038999631001880010208000020160000200382003811800211091010800001000000502061665200350080000102003920039200392003920039
8002420038155000003925800101080000108000050640000200192003820038999631001880010208000020160000200382003811800211091010800001000000502051656200350080000102003920039200392003920039
8002420038156000008125800101080000108000050640000200192003820038999631001880010208000020160000200382003811800211091010800001000000502071685200350080000102003920039200392003920039
8002420038155000003925800101080000108000050640000200192003820038999631001880010208000020160000200382003811800211091010800001000000502051676200350080000102003920039200392003920039
800242003815601021603925800101080095108019750640000200192003820091999681004680010208000020160000200872003811800211091010800001000000502051665200350080000102003920039200392003920039
8002420038155000003925800101080000108000050640000200192003820038999631001880010208000020160000200382003811800211091010800001000000502051656200350080000102003920039200392003920039
8002420038155000003925800101080000108000050640000200192003820038999631001880010208000020160000200382003811800211091010800001000900502051675200350080000102003920039200392003920039
8002420038155000003925800101080000108000050640000200192003820038999631001880010208000020160000200382003811800211091010800001000000502061655200350080000102003920039200392003920039