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

TRN1 (vector, 4H)

Test 1: uops

Code:

  trn1 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)031e3f4e51schedule uop (52)schedule simd uop (54)dispatch simd uop (57)ldst uops in schedulers (5b)6061696d6emap 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)accfd0d5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
10042037150611687251000100010002646801020182037203715723189510001000200020372037111001100000730116111787100020382038203820382038
100420371569611687251000100010002646801020182037203715723189510001000200020372037111001100000730116111787100020382038203820382038
10042037150611687251000100010002646801020182037203715723189510001000200020372037111001100000730116111787100020382038203820382038
10042037150611687251000100010002646801020182037203715723189510001000200020372037111001100000730116111787100020382038203820382038
10042037150611687251000100010002646801020182037203715723189510001000200020372037111001100000730116111787100020382038203820382038
100420371501031687251000100010002646801020182037203715723189510001000200020372037111001100000730116111787100020382038203820382038
10042037150611687251000100010002646801020182037203715723189510001000200020372037111001100000730116111787100020382038203820382038
10042037150611687251000100010002646801020182037203715723189510001000200020372037111001100000730116111787100020382038203820382038
10042037150611687251000100010002646801020182037203715723189510001000200020372037111001100000730116111787100020382038203820382038
10042037150611687251000100010002646801020182037203715723189510001000200020372037111001100000730116111787100020382038203820382038

Test 2: Latency 1->2

Code:

  trn1 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)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)9fl1d cache writeback (a8)accdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
1020420037150001911968725101001001000010010000500284768012001820037200371842231874510100200100002002000020037200371110201100991001001000010000071021622197910100001002003820038200382003820038
102042003715000821968725101001001000010010000500284768002001820037200371842231874510100200100002002000020037200371110201100991001001000010000071021622197910100001002003820038200382003820038
102042003715590821968725101001001000010010150500284768012001820037200371842231874510100200100002002000020037200372110201100991001001000010000071021622197910100001002003820038200382003820038
102042003715000611968725101001001000010010000500284768012001820037200371842231874510100200100002002000020037200371110201100991001001000010000071021622197910100001002003820038200382003820038
102042003715000611968725101001001000010010000500284768012001820037200371842231874510100200100002002000020037200371110201100991001001000010000071021622197910100001002003820038200382003820038
102042003715000611968725101001001000010010000500284768012001820037200371842231874510100200100002002000020037200371110201100991001001000010006071021622197910100001002003820038200382003820038
102042003715000611968725101001001000010010000500284768012001820037200371842231874510100200100002002000020037200371110201100991001001000010000071021622197910100001002003820038200382003820038
102042003715000611968725101001001000010010000500284768012001820037200371842231874510100200100002002000020037200371110201100991001001000010013071021622197910100001002003820038200382003820038
102042003715000821968725101001001000010010000500284768012001820037200371842231874510100200100002002000020037200371110201100991001001000010000071021622197910100001002003820038200382003820038
102042003715000821968725101001001000010010000500284768002001820037200371842231874510100200100002002000020037200371110201100991001001000010000071021622197910100001002003820038200382003820038

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0037

retire uop (01)cycle (02)031e3a3f4e51schedule 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 ldst uop inputs (80)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)a9accdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
10024200371560241119687251001010100001010000502847680020018200372003718444318767100102010000200200002003720037111002110910101000010000006441016101319785010000102003820038200862003820038
100242003716102661968725100101010000101000050284768012001820037200371844431876710010201000020413200002003720037111002110910101000010000006441016111019785010000102003820038200382003820038
100242003715002661968725100101010000101000050284768012001820037200371844431876710010201000020020000200372003711100211091010100001000100644516111119785010000102003820038200382003820038
100242003715002661968725100101010000101000050284768012001820037200371844431876710010201000020020000200372003711100211091010100001000000644101610619785010000102003820038200382003820038
1002420037150028719687251001010100001010000502847680020018200372003718444318767100102010000200200002003720037111002110910101000010000006441016111019785010000102003820038200382003820038
1002420037150026619687251001010100001010000502847680120018200372003718444318767100102010000200200002003720037111002110910101000010000630644111661119785010000102003820038200382003820038
100242003715002661968725100101010000101000050284768002001820037200371844431876710010201000020020000200372003711100211091010100001000000644111651019785010000102003820038200382003820038
10024200371500210819687251001010100001010000502847680020018200372003718444318767100102010000200200002003720037111002110910101000010000006441116111119785010000102003820038200382003820038
10024200371500273119687251001010100001010000502847680020018200372003718444318767100102010000200200002003720037111002110910101000010001006441016111019785010000102003820038200382003820038
1002420037150026619687251001010100001010000502847680120018200372003718444318767100102010000200200002003720037111002110910101000010000006441116121119785010000102003820038200382003820038

Test 3: Latency 1->3

Code:

  trn1 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)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)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)9facbranch 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
10204200371500296196872510100100100001001000050028476801200180200372003718422318745101002001000020020000200372003711102011009910010010000100000071011611197910100001002003820038200382003820038
10204200371500212196872510100100100001001000050028476801200180200372003718422318745101002001000020020000200372003711102011009910010010000100000071011611197910100001002003820038200382003820038
1020420037150082196872510100100100001001000050028476801200180200372003718426318745101002001000020020000200372003711102011009910010010000100000071011611197910100001002003820038200382003820038
10204200371500631196872510100100100001001000050028476801200180200372003718422318745101002001000020020000200372003711102011009910010010000100000071011611197910100001002003820038200382003820038
1020420037150061196872510100100100001001000050028476801200180200372003718422318745101002001000020020000200372003711102011009910010010000100000071011611197910100001002003820038200382003820038
1020420037150061196872510100100100001001000050028476801200180200372003718422318745101002001000020020000200372003711102011009910010010000100000071011611197910100001002003820038200382003820038
102042003715001241968725101001001000010010000500284768012001802003720037184223187451010020010000200200002003720037111020110099100100100001001500071011611197910100001002003820038200382003820038
1020420037150061196872510100100100001001000050028476801200180200372003718422318745101002001000020020000200372003711102011009910010010000100000071011611197910100001002003820038200382003820038
1020420037150061196872510100100100001001000050028476801200180200372003718422318745101002001000020020000200372003711102011009910010010000100000071011611197910100001002003820038200382003820038
1020420037150061196872510100100100001001000050028476801200180200372003718422318745101002001000020020000200372003711102011009910010010000100000071011611197910100001002003820038200382003820038

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 instruction (0a)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 miss (a1)ld unit uop (a6)l1d cache writeback (a8)a9accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
10024200371500000001031968725100101010000101000050284768012001820037200371844431876710010201000020200002003720037111002110910101000010000006402162219785010000102003820038200382003820038
1002420085150000000821968725100101010000101000050284768012001820037200371844431876710164201000020200002003720084111002110910101000010000006402162219785010000102003820038200382003820038
10024200371500000001241968725100101010000101000050284768012001820037200371844431876710010201000020200002003720037111002110910101000010000006402162219785010000102003820038200852003820038
1002420037150000000611968725100101010000101000050284768012001820037200371844431876710010201000020200002003720037111002110910101000010000006402162219785010000102003820038200382003820038
10024200371500000004591968725100101010000101000050284768002001820037200371844431876710010201000020200002003720037111002110910101000010001006402162219785010000102003820038200382003820038
10024200371500000001031968725100101010000101000050284768012001820037200371844431876710010201000020200002003720037111002110910101000010000006402162219785010000102003820038200382003820038
1002420037150000000821968725100101010000101000050284768012001820037200371844431876710010201000020200002003720037111002110910101000010000006402162219785010000102003820038200382003820038
1002420037150000000611968725100101010000101000050284768002001820037200371844431876710010201000020200002003720037111002110910101000010000006402162219785010000102003820038200382003820038
10024200371500000001031968725100101010000101000050284768002001820037200371844431876710010201000020200002003720037111002110910101000010004066402162219785010000102003820038200382003820038
10024200371500000005531968725100101010000101000050284768012001820037200371844431876710010201000020200002003720037111002110910101000010000006402162219785010000102003820038200382003820038

Test 4: throughput

Count: 8

Code:

  trn1 v0.4h, v8.4h, v9.4h
  trn1 v1.4h, v8.4h, v9.4h
  trn1 v2.4h, v8.4h, v9.4h
  trn1 v3.4h, v8.4h, v9.4h
  trn1 v4.4h, v8.4h, v9.4h
  trn1 v5.4h, v8.4h, v9.4h
  trn1 v6.4h, v8.4h, v9.4h
  trn1 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)03mmu table walk instruction (07)mmu table walk data (08)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)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)a9acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
802042006015000000001712580100100800001008000050064000020019200382003899733999680100200800002001600002003820038118020110099100100800001000000000511021611200350800001002003920039200392003920039
802042003815000000003322580100100800001008000050064000020019200382003899733999680100200800002001600002003820038118020110099100100800001000000000511011611200350800001002003920039200392003920039
802042003815010000002612580100100800001008000050064000020019200382003899733999680100200800002001600002003820038118020110099100100800001000000000511011621200350800001002003920039200392003920039
802042003815000000001282580125100800001008000050064000020019200382003899733999680100200800002001600002003820038118020110099100100800001000000000511011611200353800001002003920039200392003920039
80204200381500000000636580100100800951008000050064000020019200382003899733999680100200800002001600002003820038118020110099100100800001000000000511011611200350800001002003920039200392003920039
8020420038150000002103394480100100800001008000050064000020019200382003899733999680100200800002001600002003820038118020110099100100800001000001000511011611200350800001002003920039200392003920039
80204200381500000000402580100100800001008000050064000020019200382003899733999680100200800002001600002003820038118020110099100100800001000000000511011624200350800001002003920039200392003920039
8020420038155000001801242580100100800001008000050064000020019200382003899733999680100200800002001600002003820038118020110099100100800001000000000511021611200350800001002003920039200392003920039
80204200381640000000402580100100800001008000050064000020019200382003899733999680100200800002001600002003820038118020110099100100800001000000000511011611200350800001002014020039200392003920039
802042003815000000001452580100100800001008000050064000020019200382003899733999680100200800002001600002003820038118020110099100100800001000000000511011611200350800001002003920039200392003920039

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)031e3f51schedule 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)accfd2d5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
800242004015003925800101080000108000050640000020019200382003899963100188001020800002016000020038200381180021109101080000100050200616632003580000102003920039200392003920039
800242003815008125800101080000108000050640000020019200382003899963100188001020800002016000020038200381180021109101080000100050200216222003580000102003920039200392003920039
8002420038150012525800101080000108000050640000020019200382003899963100188001020800002016000020038200381180021109101080000100050200216222003580000102003920039200392003920039
800242003815003925800101080000108000050640000020019200382003899963100188001020800002016000020038200381180021109101080000100050200616622003580000102003920039200392003920039
800242003815003925800101080000108000050640000120019200382003899963100188001020800002016000020038200381180021109101080000100050200616322003580000102003920039200392003920039
800242003815003925800101080000108000050640000120019200382003899963100188001020800002016000020038200381180021109101080000100050200616362003580000102003920039200392003920039
800242003815003925800101080000108000050640000020019200382003899963100188001020800002016019820038200381180021109101080000100050200216222003580000102003920039200392003920039
800242003815003925800101080000108000050640000120019200382003899963100188001020800002016000020038200381180021109101080000100050200616622003580000102003920039200392003920039
8002420038150051425800101080000108000050640000120019200382003899963100188001020800002016000020038200381180021109101080000100050200616632003580000102003920039200392003920039
800242003815003925800101080000108000050640000020019200382003899963100188001020800002016000020038200381180021109101080000100050200216222003580000102003920039200392003920039