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

CMTST (register, 16B)

Test 1: uops

Code:

  cmtst v0.16b, v0.16b, v1.16b
  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)696d6emap 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)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
1004203715061168725100010001000264680201820372037157231895100010002000203720371110011000073116111787100020382038203820382038
1004203715061168725100010001000264680201820372037157231895100010002000203720371110011000073116111787100020382038203820382038
1004203715061168725100010001000264680201820372037157231895100010002000203720371110011000073116111787100020382038203820382038
1004203715061168725100010001000264680201820372037157231895100010002000203720371110011000073116111787100020382038203820382038
1004203715061168725100010001000264680201820372037157231895100010002000203720371110011000073116111787100020382038203820382038
1004203715061168725100010001000264680201820372037157231895100010002000203720371110011000073116111787100020382038203820382038
1004203715061168725100010001000264680201820372037157231895100010002000203720371110011000073116111787100020382038203820382038
1004203716361168725100010001000264680201820372037157231895100010002000203720371110011000073116111787100020382038203820382038
1004203716061168725100010001000264680201820372037157231895100010002000203720371110011000073116111787100020382038203820382038
1004203715061168725100010001000264680201820372037157231895100010002000203720371110011000073116111787100020382038203820382038

Test 2: Latency 1->2

Code:

  cmtst v0.16b, v0.16b, v1.16b
  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)0318191e1f3a3f4e51schedule 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)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
10204200371500066006119687251010010010000100100005002847680020018200372003718422318745101002001000020020000200372003711102011009910010010000100000071011611197910100001002003820038200382003820038
10204200371510042006119687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100000071011611197910100001002003820038200382003820038
1020420037150000006119687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100000071011611197910100001002003820038200382003820038
1020420037150000006119687251010010010000100100005002847680020018200372003718422318745101002001000020420000200372003711102011009910010010000100000071011611197910100001002003820038200382003820038
1020420037150000006119687251010010010000100100005002847680020018200372003718422318745101002001000020020000200372003711102011009910010010000100000071011611197910100001002003820038200382003820038
1020420037150009006119687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100010071011611197910100001002003820038200382003820038
1020420037149000006119687251010010010000100100005002847680020018200372003718422318745102522001000020020000200372003711102011009910010010000100000071011611197910100001002003820038200382003820038
1020420037150000006119687251010010010000100100005002847680020018200372003718422318745101002001000020020000200372003711102011009910010010000100000071011611197910100001002003820038200382003820038
1020420037150000006119687251010010010000100100005002847680020018200372003718422318745101002001018020020000200372003711102011009910010010000100000071011611197910100001002003820038200382003820038
1020420037150000006119687251010010010000100100005002847680020018200372003718422318745101002001000020020000200372003711102011009910010010000100000071011611197910100001002003820038200382003820038

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0037

retire uop (01)cycle (02)03l2 tlb miss data (0b)1e1f3f4e51schedule 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)acc2branch cond mispred nonspec (c5)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
1002420037150060611968725100101010000101000050284768020018200372003718444318767100102010000202000020037200371110021109101010000100000640216221978510000102003820038200382003820038
1002420037150000611968725100101010000101000050284768020018200372003718444318767100102010000202000020037200371110021109101010000100000640216221978510000102003820038200382003820038
10024200371500004411968725100101010000101000050284768020018200372003718444318767100102010000202000020037200371110021109101010000100000640216221978510000102003820038200382003820038
1002420037150000611968725100101010000101000050284768020018200372003718444318767100102010000202000020037200371110021109101010000100000640216221978510000102003820038200382003820038
1002420085150000611968725100101010000101000050284768020018200372008418444318767100102010000202000020037200371110021109101010000100000640216221978510000102003820038200382003820038
100242003715001800611968725100101010000101000050284768020018200372003718444318767100102010000202000020037200371110021109101010000100000640216221978510000102003820038200382003820038
1002420037150060611968725100101010000101000050284768020018200372003718444318767100102010000202000020037200371110021109101010000100000640216221978510000102003820038200382003820038
10024200371500006421968725100101010000101000050284768020018200372003718448318767100102010169202000020037200731110021109101010000100000640216221978510000102003820038200382003820038
1002420037150000611968725100101010000101000050284768020018200372003718444318767100102010000202000020037200371110021109101010000100000640216221978510000102003820038200382003820038
1002420037150000611968725100101010000101000050284768020018200372003718444318767100102010000202000020037200371110021109101010000100000640216221978510000102003820038200382003820038

Test 3: Latency 1->3

Code:

  cmtst v0.16b, v1.16b, v0.16b
  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)191e1f3f4e5051schedule 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
10204200371500000006119687025101001001000010010000500284768012001820037200371842231874510100200100002002000020037200371110201100991001001000010000000071011611197910100001002003820038200382003820038
102042003715000000061196872002125101001001000010010000500284768002001820085200371842231874510100200100002002000020037200371110201100991001001000010000003071011611197910100001002003820038200382003820038
1020420037150000090611968720021251010010010000100100005002848214020018200372003718422318745101002001000020020000200372003711102011009910010010000100000090071011611197910100001002003820085200852003820038
1020420037150000000631196870251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100000370071011611197910100001002003820038200382003820038
10204200371500000006119687025101001001000010010000500284768002001820037200371842231874510100200100002002000020037200371110201100991001001000010000003071011611197910100001002003820038200382003820038
10204200371500000006119687025101001001000010010000500284768002001820037200371842231874510100200100002002000020037200371110201100991001001000010000019071011611197910100001002003820038200382003820038
102042003715000000061196870251010010010000100100005002847680020018200372003718422318745101002001000020020000200372003711102011009910010010000100020018071011611197910100001002003820038200382003820038
102042003715000000061196870251010010010000100100005002847680020018200372003718422318745101002001000020020000200372003711102011009910010010000100000045071011611197910100001002003820038200382003820038
10204200371560000906119687025101001001000010010000500284768012001820037200371842231874510100200100002002000020037200371110201100991001001000010000000071011611197910100001002003820038200382003820038
102042003715000000061196870251010010010000100100005002847680020018200372003718422318745101002001000020020000200372003711102011009910010010000100000012071011611197910100001002003820038200382003820038

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0037

retire uop (01)cycle (02)03l1i tlb fill (04)mmu table walk data (08)091e1f3f4e51schedule 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)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)l1d cache writeback (a8)a9acbranch mispred nonspec (cb)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
100242003715010000611968725100101010000101000050284768012001802003720037184440318767100102010000202000020037200371110021109101010000100010006402162219785010000102003820038200382003820038
100242003715000000611968725100101010000101000050284768012001802003720037184440318767100102010000202000020037200371110021109101010000100000006402162219785010000102003820038200382003820038
100242003715000000611968725100101010000101000050284768012001802003720037184440318767100102010000202000020037200371110021109101010000100000306402162119823210000102003820038200382003820038
10024200371500004201086119687251001010100001010000502847680120018020037200371844403187671001020100002020000200372003711100211091010100001000610006402162219785010000102003820038200382003820038
100242003715000000611968725100101010000101000050284768012001802003720037184440318767100102010000202000020037200371110021109101010000100000006402162219785010000102003820038200382003820038
1002420037150000906119687251001010100001010000502847680120018020037200371844403187671001020100002020000200372003711100211091010100001000290306402162219785010000102003820038200382003820038
100242003715000000611968725100101010000101000050284768012001802003720037184440318767100102010000202000020037200372110021109101010000100000306402162219785010000102003820038200382003820038
100242003715000000611968725100101010000101000050284768012001802003720037184440318767100102010000202000020037200371110021109101010000100000006402162219785010000102003820038200382003820038
100242003715000000611968725100101010000101000050284768012001802003720037184440318767100102010000202000020037200371110021109101010000100000006402162219785010000102003820038200382003820038
100242003715000000611968725100101010000101000050284768002001802003720037184440318767100102010000202000020037200371110021109101010000100010006402162219785010000102003820038200382003820038

Test 4: throughput

Count: 8

Code:

  cmtst v0.16b, v8.16b, v9.16b
  cmtst v1.16b, v8.16b, v9.16b
  cmtst v2.16b, v8.16b, v9.16b
  cmtst v3.16b, v8.16b, v9.16b
  cmtst v4.16b, v8.16b, v9.16b
  cmtst v5.16b, v8.16b, v9.16b
  cmtst v6.16b, v8.16b, v9.16b
  cmtst v7.16b, v8.16b, v9.16b
  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)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)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
8020420049150000000040258010010080000100800005006400000200192003820038997339996801002008000020016000020038200381180201100991001008000010000003511021611200350800001002003920039200392003920039
8020420088150000000040258010010080000100800005006400000200192003820038999839996801002008000020016000020038200381180201100991001008000010000206511011611200350800001002003920039200892003920039
8020420038150000200040258010010080000100800005006400001200192003820038997339996801002008000020016000020038200381180201100991001008000010000003511011611200350800001002003920039200392003920039
8020420038150000000040258010010080000100800005006400001200192003820038997339996801002008000020016000020038200381180201100991001008000010000003511011611200350800001002003920039200392003920039
8020420038150000000040258010010080000100800005006400001200192003820038997339996801002008000020016000020038200381180201100991001008000010000003511011611200350800001002003920039200392003920039
8020420038150000000040258010010080000100800005006400001200192003820038997339996801002008000020016000020038200381180201100991001008000010000003511011611200350800001002003920039200392003920039
8020420038150000000040258010010080000100800005006400001200192003820038997339996801002008039120016000020038200381180201100991001008000010000000511011611200350800001002003920039200392003920039
80204200381500004000402580100100800001138000050064000012001920038200389973310103801002008000020016000020038200381180201100991001008000010000203511011611200350800001002003920039200392003920039
8020420038150111111628840548020210880095121800995376400001200192008820097997339996801002008000020016000020038200381180201100991001008000010020403512711611200350800001002003920039200392003920039
8020420038150000000040258010010080000100800005006400001200192003820139997339996801002008000020016000020038200381180201100991001008000010000000511011611200350800001002003920039200392003920039

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)0318191e3f51schedule 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)a9accfd5map dispatch bubble (d6)dbddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
800242004015000039258001010800001080000506400002001902003820038999631001880010208000020160000200382003811800211091010800001000050203160332003580000102003920039200392003920039
800242003815000039258001010800001080000506400002001902003820038999631001880010208000020160000200382003811800211091010800001000050205160432003580000102003920039200392003920039
800242003815000039258001010800001080000506400002001902003820038999631001880010208000020160000200382003811800211091010800001030050204160532003580000102003920039200392003920039
800242003815000060258001010800001080000506400002001902003820038999631001880010208000020160000200382003811800211091010800001000350203160442003580000102003920039200392003920039
800242003815000039258001010800001080000506400002001902003820038999631001880010208000020160000200382003811800211091010800001000050204160442003580000102003920039200392003920039
8002420038150000396080010118000010800005064000020019020038200389996310018800102080000201600002003820038118002110910108000010550650204160322019680000102003920039200392003920039
8002420038150000392580010108000010800005064000020019020038200389996310018800102080000201600002003820038118002110910108000010420650204160332003580000102003920039200392003920039
800242003815000039258001010800001080000506400002001902003820038999631001880010208000020160000200382003811800211091010800001030050205160332003580000102003920039200392003920039
800242003815000039258001010800001080000506400002001902003820038999631001880010208000020160000200382003811800211091010800001000050204160342003580000102003920039200392003920039
800242003815000039258001010800001080000506400002001902003820038999631001880010208000020160000200382003811800211091010800001010050203160432003580000102003920039200392003920039