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

EOR (immediate, 64-bit)

Test 1: uops

Code:

  eor x0, x0, #3
  mov x0, 1
  mov x1, 2

(no loop instructions)

1000 unrolls and 1 iteration

Retires: 1.000

Issues: 1.000

Integer unit issues: 1.000

Load/store unit issues: 0.000

SIMD/FP unit issues: 0.000

retire uop (01)cycle (02)03mmu table walk data (08)1e3f4d51schedule uop (52)schedule int uop (53)dispatch int uop (56)int uops in schedulers (59)6d6emap stall dispatch (70)map rewind (75)map stall (76)dispatch uop (78)map int uop (7c)map int uop inputs (7f)8283flush restart other nonspec (84)85inst all (8c)inst int alu (97)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
10041035700618622510001000100016916103510357283868100010001000103541111001100073241119371000100010361036103610361036
100410357001568622510001000100016916103510357283868100010001000103541111001100073141119371000100010361036103610361036
10041035800618622510001000100016916103510357283868100010001000103541111001100073141119371000100010361036103610361036
10041035800618622510001000100016916103510357283868100010001000103541111001100073141119371000100010361036103610361036
10041035800618622510001000100016916103510357283868100010001000103541111001100073141119371000100010361036103610361036
10041035800618622510001000100016916103510357283868100010001000103541111001100073141119371000100010361036103610361036
10041035800618622510001000100016916103510357283868100010001000103541111001100073141119371000100010361036103610361036
10041035800618622510001000100016916103510357283868100010001000103541111001100073141119371000100010361036103610361036
10041035800618622510001000100016916103510357283868100010001000103541111001100073141119371000100010361036103610361036
10041035800618622510001000100016916103510357283868100010001000103541111001100073141119371000100010361036103610361036

Test 2: Latency 1->2

Code:

  eor x0, x0, #3
  mov x0, 1
  mov x1, 2

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code): 1.0035

retire uop (01)cycle (02)03mmu table walk data (08)1e3f4d51schedule uop (52)schedule int uop (53)dispatch int uop (56)int uops in schedulers (59)60696a6d6emap stall dispatch (70)map rewind (75)map stall (76)dispatch uop (78)map int uop (7c)map int uop inputs (7f)8283flush restart other nonspec (84)85inst all (8c)inst branch (8d)inst branch taken (90)inst branch cond (94)inst int alu (97)9fl1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
102041003575006198772510100101001010088664049695510035100358580387221010010200102001003541111020110099100101001000071013711994110000101001003610036100361003610036
102041003575006298772510100101001010088664049695510035100358580387221010010200102001003541111020110099100101001001071013711994110000101001003610036100361003610036
102041003575096198772510100101001010088664049695510035100358580387221010010200102001003541111020110099100101001000071013711994110000101001003610036100361003610036
102041003576066198772510100101001010088664049695510035100358580387221010010200102001003541111020110099100101001000071013711994110000101001003610036100361003610036
1020410035750126198772510100101001010088664049695510035100358580387221010010200102001003541111020110099100101001000071013711994110000101001003610036100361003610036
102041003575006198772510100101001010088664049695510035100358580387221010010200102001003541111020110099100101001000071013711994110000101001003610036100361003610036
1020410035750012698772510100101001010088664049695510035100358580387221010010200102001003541111020110099100101001000071013711994110000101001003610036100361003610036
102041003575006198772510100101001010088664149695510035100358580387221010010200102001003541111020110099100101001000071013711994110000101001003610036100361003610036
102041003575006198772510100101001010088664149695510035100358580387221010010200102001003541111020110099100101001000071013711994110000101001003610036100361003610036
102041003575008498772510100101001010088664049695510035100358580387221010010200102001003541111020110099100101001000071013711994110000101001003610036100361003610036

1000 unrolls and 10 iterations

Result (median cycles for code): 1.0035

retire uop (01)cycle (02)03191e3f4d51schedule uop (52)schedule int uop (53)dispatch int uop (56)int uops in schedulers (59)60696a6d6emap stall dispatch (70)map rewind (75)map stall (76)dispatch uop (78)map int uop (7c)map int uop inputs (7f)8283flush restart other nonspec (84)85inst all (8c)inst branch (8d)inst branch taken (90)inst branch cond (94)inst int alu (97)9fl1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
10024100357500619863251001010010100108878404969551003510035860238740100101002010020100354111100211091010010100064024122994010000100101003610036100361003610036
10024100357503619863251001010010100108878414969551003510035860238740100101002010020100354111100211091010010101064024122994010000100101003610036100361003610036
10024100357500619863251001010010100108878404969551003510035860238740100101002010020100354111100211091010010100064024122994010000100101003610036100361012610036
10024100357500619863251001010010100108878404969551003510035860238740100101002010020100354111100211091010010100364024122994010000100101003610036100361003610036
10024100357500619863251001010010100108878404969551003510035860238740100101002010020100354111100211091010010100064024122994010000100101003610036100361003610036
10024100357500619863251001010010100108878404969551003510035860238740100101002010020100354111100211091010010100064024122994010000100101003610036100361003610036
10024100357500619863251001010010100108878404969551003510035860238740100101002010020100354111100211091010010100064024122994010000100101003610036100361003610036
10024100357500619863251001010010100108878404969551003510035860238740100101002010020100354111100211091010010100064024122994010000100101003610036100361003610036
10024100357500619863251001010010100108878404969551003510035860238740100101002010020100354111100211091010010100064024122994010000100101003610036100361003610036
10024100357500619863251001010010100108878404969551003510035860238740100101002010020100354111100211091010010100064024122994010000100101003610036100361003610036

Test 3: throughput

Count: 8

Code:

  eor x0, x8, #3
  eor x1, x8, #3
  eor x2, x8, #3
  eor x3, x8, #3
  eor x4, x8, #3
  eor x5, x8, #3
  eor x6, x8, #3
  eor x7, x8, #3
  mov x8, 9

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code divided by count): 0.1674

retire uop (01)cycle (02)030e181e1f3f51schedule uop (52)schedule int uop (53)dispatch int uop (56)int uops in schedulers (59)60696a6d6emap stall dispatch (70)map rewind (75)map stall (76)dispatch uop (78)map int uop (7c)map int uop inputs (7f)8283flush restart other nonspec (84)85inst all (8c)inst branch (8d)inst branch taken (90)inst branch cond (94)inst int alu (97)9fl1d tlb miss (a1)ld unit uop (a6)l1d cache writeback (a8)a9acc2branch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfd5map dispatch bubble (d6)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
802041341410020120282780136801368014840071014910310133901339033266333680148802648026413390391180201100991008010010000000011151192161338780036801001339113391133911339113391
80204133901000000282780136801368014840071014910310133901339033266333680148802648026413390391180201100991008010010000000011151190161338780036801001339113391133911343713391
802041339010000240282780136801368014840071014910310133901339033266333680148802648039413390391180201100991008010010000000011151190161338780036801001339113391133911339113391
802041339010000270282780136801368014840071014910310133901339033266333680148802648026413390391180201100991008010010000000011151190161338780036801001339113391133911339113391
80204133901000090282780136801368014840071014910310133901339033266333680148802648026413390391180201100991008010010000000011151190161338780036801001339113391133911339113391
80204133901000090282780136801368014840071004910310133901339033266333680148802648026413390391180201100991008010010000000011151190161338780036801001339113391133911339113391
80204133901010000282780136801368014840071004910310133901339033266333680148802648026413390391180201100991008010010000000011151190161338780036801001339113391133911339113391
80204133901000000282780136801368014840071004910310133901339033266333680148802648026413390391180201100991008010010000000011151190161338780036801001339113391133911339113391
8020413390101001740282780136801368014840071004910310133901339033266333680148802648026413390391180201100991008010010000000011151190161338780036801001339113391133911339113391
80204133901000000282780136801368014840071014910310133901339033266333680148802648026413390391180201100991008010010000000011151190161338780036801001339113391133911339113391

1000 unrolls and 10 iterations

Result (median cycles for code divided by count): 0.1671

retire uop (01)cycle (02)03l2 tlb miss data (0b)3f51schedule uop (52)schedule int uop (53)dispatch int uop (56)int uops in schedulers (59)5f60696a6d6emap stall dispatch (70)map rewind (75)map stall (76)dispatch uop (78)map int uop (7c)map int uop inputs (7f)8283flush restart other nonspec (84)85inst all (8c)inst branch (8d)inst branch taken (90)inst branch cond (94)inst int alu (97)9fl1d cache writeback (a8)acc2branch cond mispred nonspec (c5)cfd0d5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)eb? int retires (ef)f5f6f7f8fd
80024133761000352580010800108001040005000491029113371133713330333488001080020800201337139118002110910800101000005022014192613368800005800101337213372133721337213372
80024133711000186258001080010800104000500049102911337113371333033348800108002080020133713911800211091080010100000502202192213368800000800101337213372133721337213372
8002413371100035258001080010800104000500049102911337113371333033348800108002080020133713911800211091080010100000502002193213368800000800101337213372133721337213372
8002413371100035258001080010800104000500049102911337113371333033348800108002080020133713911800211091080010100000502002196313368800000800101337213372133721337213372
8002413371100035258001080010800104000500049102911337113411333033348800108002080020133713911800211091080010100000502002192213368800000800101337213372133721337213372
8002413371100035258001080010800104000500049102911337113371333033348800108002080020133713911800211091080010100000502003192213368800000800101337213372133721337213372
80024133711000110258001080010800104000500049102911337113371333033348800108002080020133713911800211091080010100000502002192213368800000800101337213372133721337213372
8002413371100035258001080010800104000500049102911337113371333033348800108002080020133713911800211091080010100000502006192213368800000800101337213372133721337213372
8002413371100035258001080010800104000500049102911337113371333033348800108002080020133713911800211091080010100000502006192213368800000800101337213372133721337213372
8002413371100035258001080010800104000500049102911337113371333033348800108002080020133713911800211091080010100300502002192213368800000800101337213372133721337213372