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

EON (register, 64-bit)

Test 1: uops

Code:

  eon x0, x0, x1
  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)031e3f4d51schedule uop (52)schedule int uop (53)dispatch int uop (56)int uops in schedulers (59)606d6emap stall dispatch (70)int prf full (71)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)l1d tlb miss (a1)l1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
100410358061862251000100010001691611035103572803868100010002000103541111001100000073241229371000100010361036103610361036
100410358661862251000100010001691601035103572803868100010002000103541111001100000073241229371000100010361036103610361036
10041035822261862251000100010001691611035103572803868100010002000103541111001100000373241229371000100010361036103610361036
100410359061862251000100010001691601035103572803868100010002000103541111001100001073241229371000100010361036103610361036
1004103580103862251000100010001691611035103572803868100010002000103541111001100000073241229371000100010361036103610361036
1004103580618622510001000100016916110351035728038681000100020001035411110011000001273241229371000100010361036103610361036
100410358061862251000100010001691611035103572803868100010002000103541111001100000073241229371000100010361036103610361036
1004103580618622510001000100016916010351035728038681000100020001035411110011000002173241229371000100010361036103610361036
100410359061862251000100010001691601035103572803868100010002000103541111001100000073241229371000100010361036103610361036
100410359061862251000100010001691601035103572803868100010002000103541111001100003073241229371000100010361036103610361036

Test 2: Latency 1->2

Code:

  eon x0, x0, x1
  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)l2 tlb miss data (0b)1e1f3f4d51schedule 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 access (a0)l1d tlb miss (a1)ld unit uop (a6)l1d cache writeback (a8)acc2branch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
1020410035770000107987725101001010010117876860496955100351003586077873410117102402028010035411110201100991001010010000000011172001600996510000101001003610036100361003610036
1020410035770000793987725101001010010117876860496955100351003586077873410117102402028010035411110201100991001010010000000011172001600996510000101001003610036100361003610036
102041003577000061987725101001010010117876861496955100351003586077873410117102402028010035411110201100991001010010000000011172001600996510000101001003610036100361003610036
102041003578000061987725101001010010117876860496955100351003586077873410117102402028010035411110201100991001010010000000011172001600996510000101001003610036100361003610036
102041003578000061987725101001010010117876860496955100351003586077873410117102402028010035411110201100991001010010000000011172001600996510000101001003610036100361003610036
10204100358000001040987725101001010010117876861496955100351003586077873410117102402028010035411110201100991001010010000000011172001600996510000101001003610036100361003610036
102041003578000066987725101001010010117876860496955100351003586077873410117102402028010035411110201100991001010010002010011172001600996510000101001003610036100361003610036
102041003578000061987725101001010010117876860496955100351003586077873510117102402028010035411110201100991001010010000000011172001600996510000101001003610036100361003610036
102041003578000061987725101001010010117876860496955100351003586077873410117102402028010035411110201100991001010010000000011172001600996510000101001003610036100361003610036
102041003577000061987725101001010010117876860496955100351003586077873410117102402028010035411110201100991001010010000000011172001600996510000101001003610036100361003610036

1000 unrolls and 10 iterations

Result (median cycles for code): 1.0035

retire uop (01)cycle (02)031e3f4d51schedule 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)acbranch cond mispred nonspec (c5)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
10024100357508298632510010100101001088784149695510035100358602387401001010020200201003541111002110910100101000164084122994010000100101003610036100361003610036
10024100357506198632510010100101001088784149695510035100358602387401001010020200201003541111002110910100101000064024122994010000100101003610036100361003610036
10024100357536198632510010100101001088784049695510035100358602387401001010020200201003541111002110910100101020064024122994010000100101003610036100361003610036
10024100357506198632510010100101001088784149695510035100358602387401001010020200201008141211002110910100101000064024122994010000100101003610036100361003610036
100241003575026898632510010100101001088784149695510035100358602387401001010020200201003541111002110910100101000064024122994010000100101003610036100361003610036
10024100357506198632510010100101001088784049695510035100358602387401001010020200201003541111002110910100101000064024122994010000100101003610036100361003610036
100241003575012498632510010100101001088784049695510035100358602387401001010020200201003541111002110910100101000064024122994010000100101003610036100361003610036
10024100357506198632510010100101001088784149695510035100358602387401001010372200201003541111002110910100101000064024122994010000100101003610036100361003610036
10024100357536198632510010100101001088784049695510035100358602387401001010020200201003541111002110910100101000064024122994010000100101003610036100361003610036
10024100357836198632510010100101001088784049695510035100358602387401001010020200201003541111002110910100101000064024122994010000100101003610036100361003610036

Test 3: Latency 1->3

Code:

  eon x0, x1, x0
  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)18191e3f4d51schedule 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)acbranch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
10204100358000006198772510100101001010088664049695510035100358580387221010010200202001003541111020110099100101001008000071013711994110000101001003610036100361003610036
1020410035810000251987725101001010010100886640496955100351003585803872210100102002020010035411110201100991001010010024300071013711994110000101001003610036100361003610036
10204100358000006198772510100101001010088664049695510035100358580387221010010200202001003541111020110099100101001000000071013711994110000101001003610036100361003610036
1020410035780001253698772510100101001010088664049695510035100358580387221010010200202001003541111020110099100101001000300071013711994110000101001003610036100361003610036
10204100357800006198772510100101001010088664049695510035100358580387221010010200202001003541111020110099100101001000300071013711994110000101001003610036100361003610036
1020410035800001210398772510100101001010088664149695510035100358580387221010010200202001003541111020110099100101001001000071013711994110000101001003610036100361003610036
1020410035810003061987725101001010010100886640496955100351003585803872210100102002020010035411110201100991001010010027300071013711994110000101001003610036100361003610036
10204100358000006198772510100101001010088664049695510035100358580387221010010200202001003541111020110099100101001000000071013711994110000101001003610036100361003610036
1020410035800000103987725101001010010100886640496955100351003585803872210100102002020010035411110201100991001010010001200071013711994110000101001003610036100361003610036
1020410035800000103987725101001010010100886640496955100351003585803872210100102002020010035411110201100991001010010031800071013711994110000101001003610036100361003610036

1000 unrolls and 10 iterations

Result (median cycles for code): 1.0035

retire uop (01)cycle (02)03mmu table walk data (08)l2 tlb miss data (0b)0f191e1f3f4d51schedule 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)a9accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
10024100357700300089198632510010100101001088784049695510035100358602387401001010020200201003541111002110910100101000064024122994010000100101003610036100361003610036
10024100357800000055298632510010100101001088784149695510035100358602387401001010020200201003541111002110910100101000064024122994010000100101003610036100361003610036
1002410035780000006198632510010100101001088784049695510035100358602387401001010020200201003541111002110910100101000064024122994010000100101003610036100361003610036
10024100357800000084198632510010100101001088784149695510035100358602387401001010020200201003541111002110910100101000064024122994010000100101003610036100361003610036
1002410035770000006198632510010100101001088784149695510035100358602387401001010020200201003541111002110910100101000964024122994010000100101003610036100361003610036
10024100357800000025198632510010100101001088784049695510035100358602387401001010020200201003541111002110910100101000064024122994010000100101003610036100361003610036
1002410035780000006198632510010100101001088784049695510035100358602387401001010020200201003541111002110910100101000064024122994010000100101003610036100361003610036
1002410035770000006198632510010100101001088784049695510035100358602387401001010020200201003541111002110910100101000064024122994010000100101003610036100361003610036
1002410035780000006198632510010100101001088784049695510035100358602387401001010020200201003541111002110910100101000064024122994010000100101003610036100361003610036
1002410035780000006198632510010100101001088784149695510035100358602387401001010020200201003541111002110910100101010064024122994010000100101003610036100361003610036

Test 4: throughput

Count: 8

Code:

  eon x0, x8, x9
  eon x1, x8, x9
  eon x2, x8, x9
  eon x3, x8, x9
  eon x4, x8, x9
  eon x5, x8, x9
  eon x6, x8, x9
  eon x7, x8, x9
  mov x8, 9
  mov x9, 10

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code divided by count): 0.1673

retire uop (01)cycle (02)03091e3f51schedule uop (52)schedule int uop (53)dispatch int uop (56)int uops in schedulers (59)60696a6d6emap stall dispatch (70)int prf full (71)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
8020413419104212352580100801008010040050014910306133861338633230333418010080200160200133863911802011009910080100100005110219211338380000801001346113387133871338713387
802041338610400352580100801008010040050014910306133861338633230333418010080200160200133863911802011009910080100100005110119111338380000801001338713387133871338713387
802041338610300352580100801008010040050014910306133861338633230333418010080200160200133863911802011009910080100100005110119111338380000801001338713387133871338713387
802041338610400352580100801008010040050014910306133861338633230333418010080200160200133863911802011009910080100100035110119111338380000801001338713387133871338713387
802041338610300352580100801008010040050014910306133861338633230333418010080200160200133863911802011009910080100100005110119111338380000801001338713387133871338713387
8020413386104001192580100801008010040050014910306133861338633230333418010080200160200133863911802011009910080100100005110119111338380000801001338713387133871338713387
802041338610400352580100801008010040050014910306133861338633230333418010080200160200133863911802011009910080100100005110119111338380000801001338713387133871338713387
802041338610300352580100801008010040050014910306133861338633230333418010080200160200133863911802011009910080100100005110119111338380000801001338713387133871338713387
8020413386104001632580100801008010040050014910306133861338633230333418010080200160200133863911802011009910080100100035110119111338380000801001338713387133871338713387
802041338610400352580100801008010040050014910306133861338633230333418010080200160200133863911802011009910080100100005110119111338380000801001338713387133871338713387

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)031e3f51schedule 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 access (a0)l1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)eb? int retires (ef)f5f6f7f8fd
80024133761049352580010800108001040005004910291133711337133203334880010800201600201337139118002110910800101000050201191113368800000800101337213372133721337213372
80024133711030352580010800108001040005004910291133711337133243334880010800201600201337139118002110910800101001050201191113500800000800101337213372133721337213372
80024133711030352580010800108001040005004910291133711337133243334880010800201600201337139118002110910800101000050201191113368800000800101337213372133721337213372
80024133711030352580010800108001040005004910291133711337133243334880010800201600201337139118002110910800101000050201191113368800000800101337213372133721337213372
80024133711030352580010800108001040005004910291133711337133243334880010800201600201337139118002110910800101000050201191113368800000800101337213372133721337213372
80024133711040352580010800108001040005004910291133711337133243334880010800201600201337139118002110910800101000350201191113368800000800101337213372133721337213372
8002413371103324352580010800108001040005004910291133711337133243334880010800201600201337139118002110910800101000050201191113368800000800101337213372133721337213372
80024133711030352580010800108001040005004910291133711337133243334880010800201600201337139118002110910800101000050201191113368800000800101337213372133721337213372
80024133711030352580010800108001040005004910291133711337133213334880010800201600201337139118002110910800101000050201191113368800000800101337213372133721337213372
8002413371104177352580010800108001040005004910291133711337133243334880010800201600201337139118002110910800101000050201191113368800000800101337213372133721337213372