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, D)

Test 1: uops

Code:

  cmge d0, d0, #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)03mmu table walk data (08)09l2 tlb miss data (0b)18191e1f3f4e51schedule 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 tlb access (a0)l1d tlb miss (a1)ld unit uop (a6)l1d cache writeback (a8)a9accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
1004203715000000061168625100010001000264521120182037203715713189510001000100020372037111001100000000073216111786100020382038203820382038
1004203716000000061168625100010001000264521120182037203715713189510001000100020372037111001100000000073116111786100020382038203820382038
1004203715000000061168625100010001000264521120182037203715713189510001000100020372037111001100000000073116111786100020382038203820382038
10042037150000000105168625100010001000264521120182037203715713189510001000100020372037111001100000000073116111786100020382038203820382038
1004203715000000061168625100010001000264521120182037203715713189510001000100020372037111001100000000073116111786100020382038203820382038
10042037150000000183168625100010001000264521120182037203715713189510001000100020372037111001100000000073116111786100020382038203820382038
1004203715000000061168625100010001000264521120182037203715713189510001000100020372037111001100000000073116111786100020382038203820382038
1004203715000000061168625100010001000264521120182037203715713189510001000100020372037111001100000003073116111786100020382038203820382038
1004203716100000061168625100010001000264521120182037203715713189510001000100020372037111001100000000073116111786100020382038203820382038
1004203715000000061168625100010001000264521120182037203715713189510001000100020372037111001100000000073124111786100020382038203820382038

Test 2: Latency 1->2

Code:

  cmge d0, d0, #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)03mmu table walk instruction (07)mmu table walk data (08)09l2 tlb miss data (0b)18193a3f4e51schedule 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)acc2cdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
1020420037150100000012419686251010010010000100100005002847521120018200372003718421318745101002001000020010000200372003711102011009910010010000100000071011611197910100001002003820038200382003820038
1020420037150000000010319686251010010010000100100005002847521120018200372003718421318745101002001000020010000200372003711102011009910010010000100000071011611197910100001002003820038200382003820038
102042003715000000006119686251010010010000100100005002847521120018200372003718421318745101002001000020010000200372003711102011009910010010000100000071011611197910100001002003820038200382003820038
1020420037150000000121419686251010010010000100100005002847521120018200372003718421318745101002001000020010000200372003711102011009910010010000100000071011611197910100001002003820038200382003820038
102042003715000000006119686251010010010000100100005002847521120018200372003718421318745101002001000020010000200372003711102011009910010010000100000071011611197910100001002003820038200382003820038
1020420037150000000012619686251010010010000100100005002847521120018200372003718421318745101002001000020010000200372003711102011009910010010000100000171031711197910100001002003820038200382008520038
1020420037150000000033719686251012510010000125100006262847521120018200372003718421318745101002001000020010000200372003711102011009910010010000100200071011611197910100001002003820038200382003820038
102042003715000000008219686251010010010000100100005002847521120018200372003718421318745101002001000020010000200372003711102011009910010010000100300071011631197910100001002003820038200382003820038
1020420037150000000051619686251010010010000100100005002847521120018200372003718421318745101002001000020010000200372003711102011009910010010000100000071001611197910100001002003820038200382003820038
1020420037150000000012619686251010010010000100100005002847521120018200372003718421318745101002001000020010000200372003711102011009910010010000100000071011611197910100001002003820038200382003820038

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)18191e1f3a3f4e51schedule 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)st unit uop (a7)l1d cache writeback (a8)a9acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
100242003715000000001031968625100101010000101000050284752112001820037200371844331876710010201000020100002003720037111002110910101000010000000006402162219786010000102003820038200382003820038
1002420037150000000010311968625100101010000101000050284752112001820037200371844331876710010201000020100002003720037111002110910101000010020000006402162219786010000102003820038200382003820038
10024200371500000000611968625100101010000101000050284752112001820037200371844331876710010201000020100002003720037111002110910101000010000000006402162219786010000102003820038200382003820038
10024200371490000000611968625100101010000101000050284752112001820037200371844331876710010201000020100002003720037111002110910101000010000000006402162219786010000102003820038200382003820038
10024200371500000000611968625100101010000101000050284752112001820037200371844331876710010201000020100002003720037111002110910101000010000000006402162219786010000102003820038200382003820038
10024200371500000000611968625100101010000101000050284752112001820037200371844331876710010201000020100002003720037111002110910101000010000000006402162219786010000102003820038200382003820038
10024200371500000000611968625100101010000101000050284752112001820037200371844331876710010201000020100002003720037111002110910101000010000000006402242219786010000102003820038200382003820038
10024200371500000000611968625100101010000101000050284752112001820037200371844331876710010201000020100002003720037111002110910101000010000000006402162219786010000102003820038200382003820038
10024200371500000000611968625100101010000101000050284752112001820037200371844331876710010201000020100002003720037111002110910101000010000000006402162219786010000102003820038200382003820038
10024200371500000000611968625100101010000101000050284752112001820037200371844331876710010201000020100002003720037111002110910101000010000000006402162219786010000102003820038200382003820038

Test 3: throughput

Count: 8

Code:

  cmge d0, d8, #0
  cmge d1, d8, #0
  cmge d2, d8, #0
  cmge d3, d8, #0
  cmge d4, d8, #0
  cmge d5, d8, #0
  cmge d6, d8, #0
  cmge d7, d8, #0
  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)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)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 cache writeback (a8)acbranch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfmap dispatch bubble (d6)dde0? simd retires (ee)? int retires (ef)f5f6f7f8fd
802042005915001362580108100800081008002050064013212001902003820038997706998980120200800322008003220038200381180201100991001008000010000111511816020035800001002003920039200392003920039
802042003815005992580108100800081008002050064013212001902003820038997706998980120200800322008003220038200381180201100991001008000010000111511816120035800001002003920039200392003920039
80204200381500292580108100800081008002050064013212001902003820038997706998980120200800322008003220038200381180201100991001008000010000111511816020035800001002003920039200392003920039
80204200381500292580108100800081008002050064013212001902003820038997706998980120200800322008003220038200381180201100991001008000010000111511816020035800001002003920039200392003920039
802042003815004022580108100800081008002050064013212001902003820038997706998980120200800322008003220038200381180201100991001008000010000111511816020035800001002003920039200392003920039
80204200381500292580108100800081008002050064013212001902003820038997706998980120200800322008003220038200381180201100991001008000010000111511816020035800001002003920039200392003920039
80204200381500292580108100800081008002050064013212001902003820038997706998980120200800322008003220038200381180201100991001008000010000111511816020035800001002003920039200392003920039
80204200381500502580108100800081008002050064013212001902003820038997706998980120200800322008003220038200381180201100991001008000010000111511816020035800001002003920039200392003920039
80204200381500922580108100800081008002050064013212001902003820038997706998980120200800322008003220038200381180201100991001008000010000111511816020035800001002003920039200392003920039
802042003815001382580108100800081008002050064013212001902003820038997706998980120200800322008003220038200381180201100991001008000010000111511816020035800001002003920039200392003920039

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)031e3a3f51schedule 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)9fl1d cache writeback (a8)acbranch mispred nonspec (cb)cfd5map dispatch bubble (d6)dbddfetch restart (de)e0eb? simd retires (ee)? int retires (ef)f5f6f7f8fd
8002420040150001042580010108000010800005064000012001902003820038999631001880010208000020800002003820038118002110910108000010000502011621120035080000102003920039200392003920039
800242003815000392580010108000010800005064000012001902003820038999631001880010208000020800002003820038118002110910108000010000502011611120035080000102003920039200392003920039
8002420038150001022580010108000010800005064000012001902003820038999631001880010208000020800002003820038118002110910108000010000502011601120035080000102003920039200392003920039
800242003815000392580010108000010800005064000012001902003820038999631001880010208000020800002003820038118002110910108000010000502011601120035080000102003920039200392003920039
800242003815000392580010108000010800005064000002001902003820038999631001880010208000020800002003820038118002110910108000010000502011601120035080000102003920039200392003920039
800242003815000392580010108000010800005064000012001902003820038999631001880010208000020800002003820038118002110910108000010000502011601120035080000102003920039200392003920039
800242003815000392580010108000010800005064000002001902003820038999631001880010208000020800002003820038118002110910108000010000502011601120035080000102003920039200392003920039
800242003815000392580010108000010800005064000012001902003820038999631001880010208000020800002003820038118002110910108000010000502011601120035080000102003920039200392003920039
800242003815000392580010108000010800005064000012001902003820038999631001880010208000020800002003820038118002110910108000010000502011601120035080000102003920039200392003920039
8002420038150001042580010108000010800005064000012001902003820038999631001880010208000020800002003820038118002110910108000010000502011601120035080000102003920039200392003920039