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

CMGE (zero, 2S)

Test 1: uops

Code:

  cmge v0.2s, v0.2s, #0
  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)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
1004203715015116862510001000100026452112018203720371571318951000100010002037203711100110001073116111786100020382038203820382038
100420371506116862510001000100026452112018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
100420371506116862510001000100026452112018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
100420371506116862510001000100026452112018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
100420371506116862510001000100026452112018203720371571318951000100010002037203711100110000079116111786100020382038203820382038
100420371506116862510001000100026452112018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
100420371506116862510001000100026452112018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
100420371506116862510001000100026452112018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
100420371506116862510001000100026452112018203720371571318951000100010002037203711100110000073116111786100020382038203820382038
100420371606116862510001000100026452112018203720371571318951000100010002037203711100110000073116111786100020382038203820382038

Test 2: Latency 1->2

Code:

  cmge v0.2s, v0.2s, #0
  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)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)cdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
102042003715006119686251010010010000100100005002847521120018200372003718421318745101002001000020010000200372003711102011009910010010000100000007101161119791100001002003820038200382003820038
102042003715006119686251010010010000100100005002847521120018200372003718421318745101002001000020010000200372003711102011009910010010000100000007101161119791100001002003820038200382003820038
1020420037150053619686251010010010000100100005002847521120018200372003718421318745101002001000020010000200372003711102011009910010010000100000007101161119791100001002003820038200382003820038
10204200371501956119686251010010010000100100005002847521120018200372003718421318745101002001000020010000200372003711102011009910010010000100000007101161119791100001002003820038200382003820038
102042003715006119686251010010010000100100005002847521120018200372003718421318745101002001000020010000200372003711102011009910010010000100000007101161119791100001002003820038200382003820038
102042003715006119686251010010010000100100005002847521120018200372003718421318745101002001000020010000200372003711102011009910010010000100000007101161119791100001002003820038200382003820038
1020420037150010319686251010010010000100100005002847521120018200372003718421318745101002001000020010000200372003711102011009910010010000100000007101161119791100001002003820038200382003820038
102042003715006119686251010010010000100100005002847521120018200372003718421318745101002001000020010000200372003711102011009910010010000100000007101161119791100001002003820038200382003820038
1020420037150093519686251010010010000100100005002847521120018200372003718421318745101002001000020010000200372003711102011009910010010000100000007101161119791100001002003820038200382003820038
102042003715006119686251010010010000100100005002847521120018200372003718421318745101002001000020010000200372003711102011009910010010000100000007101161119791100001002003820038200382003820038

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)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)a9acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
1002420037150000090866196862510010101000010100005028475211200182003720037184433187671001020100002010000200372003711100211091010100001032000026404163319786010000102003820038200382003820038
1002420037150000012061196862510010101000010100005028475211200182003720037184437187671001020100002010000200372003711100211091010100001000002006403163319786010000102003820038200382003820038
100242003715000000061196862510010101000010100005028475211200182003720037184433187671001020100002010000200372003711100211091010100001000000006403163319786010000102003820038200382003820038
100242003715000000061196862510010101000010100005028475211200182003720037184433187671001020100002010000200372003711100211091010100001000000006403163319786010000102003820038200382003820038
100242003715000000061196862510010101000010100005028475211200182003720037184433187671001020100002010000200372003711100211091010100001000000306403163319786010000102003820038200382003820038
100242003715000000061196862510010101000010100005028475210200182003720037184433187671001020100002010000200372003711100211091010100001000000197306403163419786010000102003820038200382003820038
100242003715000012790605196862510010101000010100005028475211200182003720037184433187671001020100002010000200372003711100211091010100001000000006403163319786010000102003820038200382003820038
100242003715000000061196862510010101000010100005028475210200182003720037184433187671001020100002010000200372003711100211091010100001000000006403163319786010000102003820038200382003820038
1002420037150000000103196862510010101000010100005028475211200182003720037184433187671001020100002210000200372003711100211091010100001000000006403173319786010000102003820038200382003820038
100242003715000000061196862510010101000010100005028475211200182003720037184433187671001020100002010000200372003711100211091010100001000000006403163319786010000102003820038200382003820038

Test 3: throughput

Count: 8

Code:

  cmge v0.2s, v8.2s, #0
  cmge v1.2s, v8.2s, #0
  cmge v2.2s, v8.2s, #0
  cmge v3.2s, v8.2s, #0
  cmge v4.2s, v8.2s, #0
  cmge v5.2s, v8.2s, #0
  cmge v6.2s, v8.2s, #0
  cmge v7.2s, v8.2s, #0
  movi v8.16b, 9

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code divided by count): 0.2506

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)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)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? simd retires (ee)? int retires (ef)f5f6f7f8fd
8020420057150000000292580108100800081008002050064013212001920038200389977699898012020080032200800322003820038118020110099100100800001000011151181161120035800001002003920039200392003920039
802042003815010101207125801081008000810080020500640132120028200492004899761099868012820080038200800382004820049118020110099100100800001000022251282232220046800001002005020050200502005020050
8020420049150000060642780116100800161008002850064019612002820049200489976999868012820080038200800382004820049118020110099100100800001000022251292232220045800001002004920049200502004920049
80204200481500000306427801161008001610080028500640196120028200482004999761099868012820080038200800382004820048118020110099100100800001000022251282232220045800001002005020050200492004920049
8020420049150000000642680116100800161008002850064019612002820048200499976999868012820080038200800382004820049118020110099100100800001000022251282232220046800001002004920049200492004920050
802042004915000001506426801161008001610080028500640196120028200482004899761099868012820080038200800382004920048118020110099100100800001000022251282232220045800001002004920049200502004920049
8020420048150000000642680116100800161008002850064019612002820048200499976999868012820080038200800382004820048118020110099100100800001000022251282232220045800001002004920049200492004920050
80204200481500000210064278011610080016100800285006401961200282004820048100091099868012820080038200800382004920048118020110099100100800001005622251282232220045800001002004920050200502004920050
80204200481500000120752780100100800001008000050064000012002820047200479971699938010020080000200800002004720047118020110099100100800001000011151203243320044800001002004820048200482004820048
80204200471500000300074027801001008000010080000500640000120028200472004799711599938010020080000200800002004720047118020110099100100800001000011151203243320044800001002004820048200482004820048

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)03mmu table walk data (08)191e3f51schedule 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)cfd5map dispatch bubble (d6)d9ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
8002420039150004839258001010800001080000506400000200192003820038100313100188001020800002080000200382003811800211091010800001000050201160112003580000102003920039200392003920039
800242003815000022925800101080000108000050640000020023200382003899963100188001020800002080000200382003811800211091010800001000050201160112003580000102003920039200392003920039
80024200381500003925800101080000108000050640000020019200382003899963100188001020800002080000200382003811800211091010800001000050201160112003580000102003920039200392003920039
800242003815000213925800101080000108000050640000020019200382003899963100188001020800002080000200382003811800211091010800001000050201160112003580000102003920039200392003920039
800242003815000123925800101080000108000050640000020019200382003899963100188001020800002080000200382003811800211091010800001000050201160112003580000102003920039200392003920039
8002420038150001570425800101080000108000050640000020019200382003899963100188001020800002080000200382003811800211091010800001000050201160112003580000102003920039200392003920039
800242003815000273925800101080000108000050640000020019200382003899963100188020520800002080000200382003811800211091010800001000050201160112003580000102003920039200392003920039
80024200381500063925800101080000108000050640000020019200382003899963100188001020800002080000200382003811800211091010800001000050201160112003580000102003920039200392003920039
800242003815000183925800101080000108000050640000020019200382003899963100188001020800002080000200382003811800211091010800001000050201160112003580000102003920039200392003920039
800242003815000213925800101080000108000050640000020019200382003899963100188001020800002080000200382003811800211091010800001000050201160112003580000102003920039200392003920039