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

FMINP (scalar)

Test 1: uops

Code:

  fminp d0, v0.2d
  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)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
1004203715006116862510001000100026452112018203720371571318951000100020002037203711100110000073116111786100020382038203820382038
1004203715006116862510001000100026452112018203720371571318951000100020002037203711100110003073116111786100020382038203820382038
1004203715006116862510001000100026452112018203720371571318951000100020002037203711100110000073116111786100020382038203820382038
1004203715006116862510001000100026452112018203720371571318951000100020002037203711100110000073116111786100020382038203820382038
10042037150010516862510001000100026452112018203720371571318951000100020002037203711100110000073116111786100020382038203820382074
1004203715106116862510001000100026452112018203720371571318951000100020002037203711100110002373116111786100020382038203820382038
1004203715006116862510001000100026452112018203720371571318951000100020002037203711100110000073116111786100020382038203820382038
1004203715006116862510001000100026452102018203720371571318951000100020002037203711100110002373116111786100020382038203820382038
1004203715006116862510001000100026452112018203720371571318951000100020002037203711100110001073116111786100020382038203820382038
1004203715006116862510001000100026452112018203720371571318951000100020002037203711100110001373116111786100020382038203820382038

Test 2: Latency 1->2

Code:

  fminp d0, v0.2d
  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)03l2 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 cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
102042003715000000611968625101001001000010010000500284752102001820037200371842131874510100200100002002000020037200371110201100991001001000010031727101161119791100001002003820038200382003820038
1020420037150000006119686251010010010000100100005002847521020018200372003718421318745101002001000020020000200372003711102011009910010010000100007101161119791100001002003820038200382003820038
10204200371500000061196862510100100100001001000050028475210200182003720037184213187451010020010000200200002008520037111020110099100100100001002437101161119791100001002003820038200382003820038
1020420037150000006119686251010010010000100100005002847521020018200372003718421318745101002001000020020000200372003711102011009910010010000100007101161119791100001002003820038200382003820038
1020420037150000006119686251010010010000100100005002847521020018200372003718421318745101002001000020020000200372003711102011009910010010000100007101161119791100001002003820038200382003820038
1020420037150000006119686251010010010000100100005002847521120018200372003718421318745101002001000020020000200372003711102011009910010010000100007101161119791100001002003820038200382003820038
1020420037150000006119686251010010010000100100005002847521020018200372003718421318745101002001000020020000200372003711102011009910010010000100007101161119791100001002003820038200382003820038
10204200371500000053619686251010010010000100100005002847521020018200372003718421318745101002001000020020000200372003711102011009910010010000100007101161119791100001002003820038200382003820038
1020420037150000006119686251010010010000100100005002850049120018200372003718421318745101002001000020020000200372003711102011009910010010000100007101161119791100001002003820038200382008620038
1020420037150000006119686251010010010000100100005002847521020018200372003718421318745101002001000020020000200372003711102011009910010010000100007101161119791100001002003820038200382003820038

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)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)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
1002420037150906119686251001010100001010000502847521200182003720037184433187671001020100002020000200372003711100211091010100001000640216221978610000102003820038200382003820038
1002420037150006119686251001010100001010000502847521200182003720037184433187671001020100002020000200372003711100211091010100001000640216221978610000102003820038200382003820038
1002420037150006119686251001010100001010000502847521200182003720037184433187671001020100002020000200372003711100211091010100001037153640216221978610000102003820038200382003820038
100242003715021061196862510010101000010100005028475212001820037200371844331876710010201000020200002003720037111002110910101000010220640216221978610000102003820038200382003820038
1002420037150006119686251001010100001010000502847521200182003720037184433187671001020100002020000200372003721100211091010100001000640216221978610000102008620038200382003820038
10024200371501029886119686251001010100001010000502847521200182003720037184433187671001020100002020674200372003711100211091010100001000640216221978610000102003820038200382003820038
1002420037150006119686251001010100001010000502847521200182003720037184433187671001020100002020000200372003711100211091010100001000640216221978610000102003820038200382003820038
1002420037150006119686251001010100001010000502847521200182003720037184433187671001020100002020000200372003711100211091010100001000640216221978610000102003820038200382003820038
100242003715000611968625100101010000101000050284752120018200372003718443318767100102010000202000020037200371110021109101010000100123640216221978610000102003820038200382003820038
1002420037150006119686251001010100001010000502847521200182003720037184433187671001020100002020000200372003711100211091010100001000640216221978610000102003820038200382003820038

Test 3: throughput

Count: 8

Code:

  fminp d0, v8.2d
  fminp d1, v8.2d
  fminp d2, v8.2d
  fminp d3, v8.2d
  fminp d4, v8.2d
  fminp d5, v8.2d
  fminp d6, v8.2d
  fminp d7, v8.2d
  movi v8.16b, 9

(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 data (0b)181e3f51schedule 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)l1d cache writeback (a8)a9acbranch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfmap dispatch bubble (d6)dde0? simd retires (ee)? int retires (ef)f5f6f7f8fd
80204200611500002925801081008000810080020500642480200192003820038997769989801202008003220016006420038200381180201100991001008000010000051111511816020035800001002003920039200392003920039
8020420038150000292580108100800081008002050064013220019200382003899776998980120200800322001600642003820038118020110099100100800001000000111511816020035800001002003920039200392003920039
8020420038150000298580108100800081008002050064013220019200382003899776998980120200800322001600642003820038118020110099100100800001000000111511816020035800001002003920039200392003920039
8020420038150005342925801081008000810080020500640132200192003820038997769989801202008003220016006420038200381180201100991001008000010000018111511816020035800001002003920039200392003920039
802042003815000059925801081008000810080020500640132200192003820038997769989801202008003220016006420038200381180201100991001008000010001003111511816020035800001002003920039200392003920088
8020420038150000292580108100800081008002050064013220019200382003899776998980120200800322001600642003820038118020110099100100800001000109111511816220035800001002003920039200392003920039
8020420038150000712580108100800081008002050064013220019200382003899776998980120200800322001600642003820038118020110099100100800001000000111511816020035800001002003920039200392003920039
8020420090150000292580108100800081008002050064013220019200382003899776998980120200800322001600642003820038118020110099100100800001000003111511816020035800001002003920039200392003920039
802042003815000029258010810080008100800205006401322001920038200389977699898012020080032200160064200382003811802011009910010080000100000722111511816020035800001002003920039200392024220039
8020420038150000292580108100800081008002050064013220019200382003899776998980120200800322001600642003820038118020110099100100800001000000111511816020035800001002003920039200392003920039

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)18191e1f3a3f51schedule 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)a9aaacc2cfd5map dispatch bubble (d6)d9ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
80024200501500000000039258001010800001080000506400001200192003820038999631001880010208000020160000200382003811800211091010800001000000000502091606220035080000102003920039200392003920039
800242003815000000000392580010108000010800005064000012005820038200381000531001880010208000020160000200382003811800211091010800001000000030502021606220035080000102003920111200992003920039
80024200381500000000039258001010800001080000506400000200192003820038999631001880010208000020160000200382003811800211091010800001000000000502021602620035080000102003920039200392003920039
80024200381500000000039258001010800001080000506400000200192003820038999631001880010208000020160000200382003811800211091010800001000000000502021602620035080000102003920039200392003920039
80024200381500000000039258001010800001080000506400000200192003820038999631001880010208000020160000200382003811800211091010800001000010030502021602220035080000102003920039200392003920039
800242003815000000000392580010108000010800005064000002001920038200389996310018800102080000201600002003820038118002110910108000010000000120502061606220035080000102003920039200392003920039
800242003815000000000392580010108000010800005064000002001920038200381000431001880010208000020160000200382003811800211091010800001000000060502031603620035080000102003920039200392003920039
80024200381500000000039258001010800001080000506400000200192003820038999631001880010208000020160000200382003811800211091010800001000000000502021602220035080000102003920039200392003920039
80024200381500000000039258001010800001080000506400000200192003820038999631001880010208000020160000200382003811800211091010800001000000000502061606220035080000102003920039200392003920039
8002420038150000000002102580010108000010800005064000012001920038200389996310018800102080000201600002003820038118002110910108000010000520030502021602220035080000102003920039200392003920039