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

NEG (vector, 16B)

Test 1: uops

Code:

  neg v0.16b, v0.16b
  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)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)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
1004203716001031686251000100010002645210201820372037157131895100010001000203720371110011000073116111786100020382038203820382038
100420371500611686251000100010002645210201820372037157131895100010001000203720371110011000073116111786100020382038203820382038
100420371500611686251000100010002645211201820372037157131895100010001000203720371110011000073116111786100020382038203820382038
100420371500611686251000100010002645211201820372037157131895100010001000203720371110011000073116111786100020382038203820382038
100420371510611686251000100010002645211201820372037157131895100010001000203720371110011000073116111786100020382038203820382038
100420371500611686251000100010002645211201820372037157131895100010001000203720371110011000073116111786100020382038203820382038
100420371600611686251000100010002645210201820372037157131895100010001000203720371110011000073116111786100020382038203820382038
100420371600611686251000100010002645211201820372037157131895100010001000203720371110011000073116111786100020382038203820382038
100420371500611686251000100010002645211201820372037157131895100010001000203720371110011000073116111786100020382038203820382038
100420371500611686251000100010002645211201820372037157131895100010001000203720371110011000073116111786100020382038203820382038

Test 2: Latency 1->2

Code:

  neg v0.16b, 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)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)acbranch mispred nonspec (cb)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
102042003715518061196862510100100100001001000050028475210200182003720037184213187451010020010000200100002003720037111020110099100100100001000007101161119791100001002003820038200382003820038
10204200371500061196862510100100100001001000050028475210200182003720037184213187451010020010000200100002003720037111020110099100100100001000007101161119791100001002003820038200382003820038
102042003715078061196862510100100100001001000050028475210200182003720037184213187451010020010000200100002003720037111020110099100100100001000007101161119791100001002003820038200382003820038
10204200371500061196862510100100100001001000050028475210200182003720037184213187451010020010000200100002003720037111020110099100100100001000007101161119791100001002003820038200382003820038
10204200371500061196862510100100100001001000050028475210200182003720037184213187451010020010000200100002003720037111020110099100100100001000907101161119791100001002003820038200382003820038
10204200371502550251196862510100100100001001000050028475210200182003720037184213187451010020010000200100002003720037111020110099100100100001000007101161119791100001002003820038200382003820038
10204200371500061196862510100100100001001000050028475210200182003720037184213187451010020010000200100002003720037111020110099100100100001000007101161119791100001002003820038200382003820038
102042003715021061196862510100100100001001000050028475210200182003720037184213187451010020010000200100002003720037111020110099100100100001000007101161119791100001002003820038200382003820038
102042003715018061196862510100100100001001000050028475210200182003720037184213187451010020010000200100002003720037111020110099100100100001000007101161119791100001002003820038200382003820038
1020420037150335261196862510100100100001001000050028475210200182003720037184213187451010020010000200100002003720037111020110099100100100001000007101161119791100001002003820038200382003820038

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)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 cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
100242003715000611968625100101010000101000050284752112001820037200371844303187671001020100002010000200372003711100211091010100001000640416331978610000102003820038200382003820038
100242003715000611968625100101010000101000050284752112001820037200371844303187671001020100002010000200372003711100211091010100001000640341331978610000102003820038200382003820038
100242003715000611968625100101010000101000050284752112001820037200371844303187671001020100002010000200372003711100211091010100001000640316331978610000102003820038200382003820038
100242003715000611968625100101010000101000050284752112001820037200371844303187671001020100002010000200372003711100211091010100001000640316331978610000102003820038200382003820038
100242003715000611968625100101010000101000050284752112001820037200371844303187671001020100002010000200372003711100211091010100001000640316331978610000102003820038200382003820038
100242003715000611968625100101010000101000050284752112001820037200371844303187671001020100002010000200372003711100211091010100001000640316331978610000102003820038200382003820038
100242003715000611968625100101010000101000050284752112001820037200371844303187671001020100002010000200372003711100211091010100001000640349331978610000102003820038200382003820038
100242003715000611968625100101010000101000050284789112001820037200371844303187671001020100002010000200372003711100211091010100001000640316331978610000102003820038200382003820038
100242003715000611968625100101010000101000050284752112001820037200371844303187671001020100002010000200372003711100211091010100001000640316331978610000102003820038200382003820038
1002420037150002401968625100101010000101000050284752112001820037200371844303187671001020100002010000200372003711100211091010100001020640316331978610000102003820038200382003820038

Test 3: throughput

Count: 8

Code:

  neg v0.16b, v8.16b
  neg v1.16b, v8.16b
  neg v2.16b, v8.16b
  neg v3.16b, v8.16b
  neg v4.16b, v8.16b
  neg v5.16b, v8.16b
  neg v6.16b, v8.16b
  neg v7.16b, v8.16b
  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)03mmu table walk data (08)09l2 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)ld unit uop (a6)l1d cache writeback (a8)a9acc2branch 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
80204200571500000031802925801081008000810080020500640132200192003820038997769989801202008003220080032200382003811802011009910010080000100000000111511801600200350800001002003920039200392003920039
802042003815000000003425801081008000810080020500640132200192003820038997769989801202008003220080032200382003811802011009910010080000100000000111511801600200350800001002003920039200392003920039
802042003815000000002925801081008000810080020500640132200192003820038997769989801202008003220080032200382003811802011009910010080000100000000111511801600200350800001002003920039200392003920039
802042003815000000002925801081008000810080020500640132200192003820038997769989801202008003220080032200382003811802011009910010080000100000000111511801600200350800001002003920091200902009020039
802042003815000000002925801081008000810080020500640132200192003820038997769989801202008003220080032200382003811802011009910010080000100000000111511801600200350800001002003920039200392003920039
802042003815000000002925801081008000810080020500640132200192003820038997769989801202008003220080032200382003811802011009910010080000100000000111511801600200350800001002003920039200392003920039
802042003815000000002925801081008000810080020500640132200192003820038997769989801202008003220080032200382003811802011009910010080000100000000111511801600200350800001002003920039200392003920039
802042003815000000002925801081008000810080020500640132200192003820038997769989801202008003220080032200382003811802011009910010080000100000000111511801600200350800001002003920039200392003920039
802042003815000000002925801081008000810080020500640132200192003820038998869989801202008003220080032200382003811802011009910010080000100000000111511801600200350800001002003920039200392003920039
802042003815000000002925801081008000810080020500640132200192003820038997769989801202008003220080032200382003811802011009910010080000100000000111511801600200350800001002003920039200392003920039

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)03191e3f51schedule 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)d9ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
800242004015000392580010108000010800005064000012001920038200389996310018800102080000208000020038200381180021109101080000100050205160352003580000102003920039200392003920039
80024200381500013142580010108000010800005064000012001920038200389996310018800102080000208000020038200381180021109101080000100050205160542003580000102003920039200392003920039
800242003815000392580010108000010800005064000012001920038200389996310018800102080000208000020038200381180021109101080000100050205160532003580000102003920039200392003920039
800242003814900392580010108000010800005064000012001920038200389996310018800102080000208000020038200381180021109101080000100050203160352003580000102003920039200392003920039
800242003815000622580010108000010800005064000012001920038200389996310018800102080000208000020038200381180021109101080000100050205160352003580000102003920039200392003920039
80024200381500288392580010108000010800005064000002001920038201099996310018800102080000208000020038200381180021109101080000100050205160532003580000102003920039200392003920039
80024200381500222392580010108000010800005064000012001920038200389996310018800102080000208000020038200381180021109101080000100050203160552003580000102003920039200392003920039
800242003815000392580010108000010800005064000012001920038200389996310018800102080000208000020038200381180021109101080000100050205160532003580000102003920039200392003920039
80024200381500249392580010108000010800005064000002001920038200389996310018800102080000208000020038200381180021109101080000100050205160532003580000102003920039200392003920039
800242003815000392580010108000010800005064000012001920038200389996310018800102080000208000020038200381180021109101080000100050203160352019280000102003920039200392003920039