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

FCMGE (vector, zero, 4S)

Test 1: uops

Code:

  fcmge v0.4s, v0.4s, #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)0318191e3f4e51schedule 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
100420371500061168625100010001000264521201820372037157131895100010001000203720371110011000073116111786100020382038203820382038
100420371500061168625100010001000264521201820372037157131895100010001000203720371110011000073116111786100020382038203820382038
100420371500061168625100010001000264521201820372037157131895100010001000203720371110011000073116111786100020382038203820382038
100420371500061168625100010001000264521201820372037157131895100010001000203720371110011000073116111962100020382038203820382038
1004203715003661168625100010001000264521201820372037157131895100010001000203720371110011000073116111786100020382038203820382038
100420371500082168625100010001000264521201820372037157131895100010001000203720371110011000073116111786100020382038203820382038
100420371500361168625100010001000264521201820372037157131895100010001000203720371110011000073116111786100020382038203820382038
100420371600084168625100010001000264521201820372037157131895100010001000203720371110011000073116111786100020382038203820382038
100420371500061168625100010001000264521201820372037157131895100010001000203720371110011000073116111786100020382038203820382038
1004203715002161168625100010001000264521201820372037157131895100010001000203720371110011000073116111786100020382038203820382038

Test 2: Latency 1->2

Code:

  fcmge v0.4s, v0.4s, #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 data (08)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)acbranch 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
10204200371500006119686251010010010000100100005002847521200182003720037184286187411010020010008200100082003720037111020110099100100100001000011171701600198010100001002003820038200382003820038
10204200371500006119686251010010010000100100005002847521200182003720037184213187451010020010000200100002003720037111020110099100100100001000000071011611197910100001002003820038200382003820038
10204200371500006119686251010010010000100100005002847521200182003720037184213187451010020010000200100002003720037111020110099100100100001000000071011611197910100001002003820038200382003820038
10204200371500006119686251010010010000100100005002847521200182003720037184213187451010020010000200100002003720037111020110099100100100001000000071011611197910100001002003820038200382003820038
10204200371500006119686251010010010000100100005002847521200182003720037184213187451010020010000200100002003720037111020110099100100100001000000071011611197910100001002003820038200382003820038
10204200371500006119686251010010010000100100005002847521200182003720037184213187451010020010000200100002003720037111020110099100100100001000000071011611197910100001002003820038200382003820038
10204200371500006119686251010010010000100100005002847521200182003720037184213187451010020010000200100002003720037111020110099100100100001000000071011611197910100001002003820038200382003820038
10204200371500006119686251010010010000100100005002847521200182003720037184213187451010020010000200100002003720037111020110099100100100001000000071011611197910100001002003820038200382003820038
10204200371500906119686251010010010000100100005002847521200182003720037184213187451010020010000200100002003720037111020110099100100100001000000071011611197910100001002003820038200382003820038
10204200371500006119686251010010010000100100005002847521200182003720037184213187451010020010000200100002003720037111020110099100100100001006000071011611197910100001002003820038200382003820038

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0037

retire uop (01)cycle (02)03mmu table walk instruction (07)l2 tlb miss instruction (0a)1e3a3f4e51schedule 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)9fbranch cond mispred nonspec (c5)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
1002420037150110268196862510010101000010100005028475211200182003720037184433187671001020100002010000200372003711100211091010100001006441016101019786010000102003820038200382003820038
100242003715011026819686251001010100001010000502847521120018200372003718443318767100102010000201000020037200371110021109101010000100644516101019786010000102003820038200382003820038
1002420037150111826819686251001010100001010000502847521120018200372003718443318767100102010000201000020037200371110021109101010000100644101610519786010000102003820038200382003820038
1002420037150110268196662510010101000010100005028475211200182003720037184433187671001020100002010000200372003711100211091010100001006441016101019786010000102003820038200382003820038
10024200371501112268196862510010101000010100005028475211200182003720037184433187671001020100002010000200372003711100211091010100001006441016101019786010000102003820038200382003820038
10024200371501102258196862510010101000010100005028475211200182003720037184433187671001020100002010000200372003711100211091010100001006441016101019786010000102003820038200382003820038
1002420037150113268196862510010101000010100005028475211200182003720037184433187671001020100002010000200372003711100211091010100001006441016111019786010000102003820038200382003820038
100242003715011026819686251001010100001010000502847521120018200372003718443318767100102010000201000020037200371110021109101010000100644101651019786010000102003820038200382003820038
1002420037150110268196862510010101000010100005028475211200182003720037184433187671001020100002010000200372003711100211091010100001006441016101019786010000102003820038200382003820038
10024200371501121268196862510010101000010101525028475211200182003720037184433187671001020100002010000200372003711100211091010100001006441016101019786010000102003820038200382003820038

Test 3: throughput

Count: 8

Code:

  fcmge v0.4s, v8.4s, #0
  fcmge v1.4s, v8.4s, #0
  fcmge v2.4s, v8.4s, #0
  fcmge v3.4s, v8.4s, #0
  fcmge v4.4s, v8.4s, #0
  fcmge v5.4s, v8.4s, #0
  fcmge v6.4s, v8.4s, #0
  fcmge v7.4s, v8.4s, #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)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)9facbranch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfmap dispatch bubble (d6)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
8020420057150029258010810080008100800205006401321200192003820038997769989801202008003220080032200382003811802011009910010080000100011151181620035800001002003920039200392003920039
8020420038150029258010810080008100800205006401321200192003820038997769989801202008003220080032200382003811802011009910010080000100011151181620035800001002003920039200392003920039
8020420038150029258010810080008100800205006401321200192003820038997769989801202008003220080032200382003821802011009910010080000100011151181620035800001002003920039200392003920039
8020420038150029258010810080008100800205006401320200192003820038997769989801202008003220080032200382003811802011009910010080000100311151181620035800001002003920039200392003920039
8020420038150029258010810080008100800205006401321200192003820038997769989801202008003220080032200382003811802011009910010080000100011151361620035800001002003920039200392003920039
8020420038150029258010810080008100800205006401321200192003820038997769989801202008003220080032200382003811802011009910010080000100011151181620035800001002003920039200392003920039
8020420038150029258010810080008100800205006401320200192003820038997769989801202008003220080032200382003811802011009910010080000100011151181620035800001002003920039200392003920039
8020420038150029258010810080008100800205006401321200192003820038997769989801202008003220080032200382003811802011009910010080000100011151181620035800001002003920039200392003920039
8020420038150029258010810080008100800205006401321200192003820038997769989801202008003220080032200382003811802011009910010080000100011151181620035800001002003920039200392003920039
8020420038150029258010810080008100800205006401321200192003820038997769989801202008003220080032200382003811802011009910010080000100011151181620035800001002003920039200392003920039

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)03l1i tlb fill (04)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)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)9fld unit uop (a6)l1d cache writeback (a8)acc2cfl1i tlb miss demand (d4)d5map dispatch bubble (d6)dbddfetch restart (de)e0eb? simd retires (ee)? int retires (ef)f5f6f7f8fd
8002420050150000392580010108000010800005064000020019200382003899963100188001020800002080000200382003811800211091010800001000005020019160171720035080000102003920039200392003920039
80024200381500003925800101080000108000050640768200192011220038100133100188001020800002080000200382003811800211091010800001000005021117160141720035080000102003920039200392003920039
80024200381501048392580010108000010800005064000020019200382003899963100188001020800002080000200382003811800211091010800001000005021116160171720035080000102003920039200392003920039
80024200381501063925800101080000108000050640000200192003820038999631001880010208000020800002003820038118002110910108000010001805021114160171420035080000102003920039200392003920039
8002420038150100392580010108000010800005064000020019200382003899963100188001020800002080000200382003811800211091010800001000005021117161121720035080000102003920039200392003920039
8002420038150100392580010108000010800005064000020019200382003899963100188001020800002080000200382003811800211091010800001000005021117160161820035080000102003920039200392003920039
8002420038150100392580010108000010800005064000020019200382003899963100188001020800002080000200382003811800211091010800001000005021114160171420035080000102003920039200392003920039
80024200381501018392580010108000010800005064000020019200382003899963100188001020800002080000200382003811800211091010800001000005021117160141720035080000102003920039200392003920039
800242003815010039258001010800001080000506400002001920038200389996310018800102080000208000020038200381180021109101080000100000502111816081720035080000102003920039200392003920039
8002420038150100392580010108000010800005064000020019200382003899963100188001020800002080000200382003811800211091010800001000005021117160171720035080000102003920039200392003920039