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 (register, 64-bit)

Test 1: uops

Code:

  eor 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)03mmu table walk data (08)1e3f4d51schedule uop (52)schedule int uop (53)dispatch int uop (56)int uops in schedulers (59)606d6emap 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)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
1004103580061862251000100010001691611035103572838681000100020001035411110011000073141119371000100010361036103610361036
1004103570061862251000100010001691611035103572838681000100020001035411110011000073141119371000100010361036103610361036
10041035701561862251000100010001691611035103572838681000100020001035411110011000073141119371000100010361036103610361036
10041035806082862251000100010001691611035103572838681000100020001035411110011000073141119371000100010361036103610361036
1004103580061862251000100010001691611035103572838681000100020001035411110011000073141119371000100010361036103610361036
1004103570061862251000100010001691611035103572838681000100020001035411110011000073141119371000100010361036103610361036
1004103580061862251000100010001691611035103572838681000100020001035411110011000073141119371000100010361036103610361036
1004103570082862251000100010001691611035103572838681000100020001035411110011000073141119371000100010361036103610361036
1004103580061862251000100010001691611035103572838681000100020001035411110011000073141119371000100010361036103610361036
1004103580061862251000100010001691611035103572838681000100020001035411110011000073141119371000100010361036103610361036

Test 2: Latency 1->2

Code:

  eor 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)031e3a3f4d51schedule uop (52)schedule int uop (53)dispatch int uop (56)int uops in schedulers (59)696a6d6emap 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)l1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
1020410035750061987725101001010010100886644969551003510035858038722101001020020200100354111102011009910010100100000071013711994110000101001003610036100361003610036
1020410035750061987725101001010010100886644969551003510035858038722101001020020200100354111102011009910010100100000071013711994110000101001003610036100361003610036
1020410035750061987725101001010010100886644969551003510035858038722101001020020200100354111102011009910010100100001371013711994110000101001003610036100361003610036
10204100357500619877251010010100101008866449695510035100358580387221010010200202001003541111020110099100101001000007271013711994110000101001003610036100361003610036
10204100357500619877251010010100101008866449695510035100358580387221010010200202001003541111020110099100101001000018071013711994110000101001003610036100361003610036
10204100357500619877251010010100101008866449695510035100358580387221010010200202001003541111020110099100101001000007271013711994110000101001003610036100361003610036
1020410035750061987725101001010010100886644969551003510035858038722101001020020200100354111102011009910010100100000071013711994110000101001003610036100361003610036
10204100357501619877251010010100101008866449695510035100358580387221010010200202001003541111020110099100101001000009071013711994110000101001003610036100361003610036
10204100357500619877251010010100101008866449695510035100358580387221010010200202001003541111020110099100101001000001871013711994110000101001003610036100361003610036
1020410035750061987725101001010010100886644969551003510035858038722101001020020200100354111102011009910010100100000071013711994110000101001003610036100361003610036

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)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
100241003575031498632510010100101001088784149695510035100358602387401001010020200201003541111002110910100101010064024122994010000100101003610036100361003610036
1002410035750619863251001010010100108878414969551003510035860238740100101002020020100354111100211091010010100064024122994010000100101003610036100361003610036
1002410035750619863251001010010100108878414969551003510035860238740100101002020020100354111100211091010010100064024122994010000100101003610036100361003610036
10024100357602939863251001010010100108878414969551003510035860238740100101002020020100354111100211091010010100064024122994010000100101003610036100361003610036
1002410035750849863251001010010100108878414969551003510035860238740100101002020020100354111100211091010010100064024122994010000100101003610036100361003610036
1002410035750619863251001010010100108878414969551003510035860238740100101002020020100354111100211091010010100064024122994010000100101003610036100361003610036
10024100357504569863251001010010100108878414969551003510035860238740100101002020020100354111100211091010010100364024122994010000100101003610036100361003610036
1002410035750619863251001010010100108878414969551003510035860238740100101002020020100354111100211091010010100064024122994010000100101003610036100361003610036
10024100357502159863251001010010100108878414969551003510035860238740100101002020020100354111100211091010010100064024122994010000100101003610036100361003610036
1002410035750619863251001010010100108878414969551003510035860238740100101002020020100354111100211091010010102064024122994010000100101003610036100361003610036

Test 3: Latency 1->3

Code:

  eor 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)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)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
10204100357506198772510100101001010088664149695510035100358580387221010010200202001003541111020110099100101001000071013711994110000101001003610036100361003610036
10204100357536198772510100101001010088664149695510035100358580387221010010200202001003541111020110099100101001000071013711994110000101001003610036100361003610036
1020410035751146198772510100101001010088664149695510128100358580387221010010200202001003541111020110099100101001000071013711994110000101001003610036100361003610036
102041003575061987725101001010010100886641496955100351003585803872210100102002020010035411110201100991001010010009671013711994110000101001003610036100361003610036
10204100357506198772510100101001010088664049695510035100358580387221010010200202001003541111020110099100101001001371013711994110000101001003610036100361003610036
10204100357506198772510100101241010088664049695510035100358580387221010010200202001003541111020110099100101001000071013711994110000101001003610036100361003610036
10204100357506198772510100101001010088664049695510035100358580387221010010200202001003541111020110099100101001008071013711994110000101001003610036100361003610036
10204100357506198772510100101001010088664049695510035100358580387221010010200202001003541111020110099100101001000071013711994110000101001003610036100361003610036
10204100357506198772510100101001010088664049695510035100358580387221010010200202001003541111020110099100101001000071013711994110000101001003610036100361003610036
102041003575061987725101001010010100886640496955100351003585803872210100102002020010035411110201100991001010010026071013711994110000101001003610036100361003610036

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 mispred nonspec (cb)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
100241003576012698632510010100101001088784049695510035100358602387401001010020200201003541111002110910100101000064034122994010000100101003610036100361003610036
10024100357506198632510010100101001088784149695510035100358602387401001010020200201003541111002110910100101000064024122994010000100101003610036100361003610036
10024100357506198632510010100101001088784149695510035100358602387401001010020200201003541111002110910100101000064024122994010000100101003610036100361003610036
10024100357506198632510010100101001088784149695510035100358602387401001010020200201003541111002110910100101000064024122994010000100101003610036100361003610036
100241003575068398632510010100101001088784149695510035100358602387401001010020200201003541111002110910100101010064024122994010000100101003610036100361003610036
100241003575012498632510010100101001088784149695510035100358602387401001010020200201003541111002110910100101000064024122994010000100101003610036100361003610036
10024100357506198632510010100101001088784149695510035100358602387401001010020200201003541111002110910100101000064024122994010000100101003610036100361003610036
10024100357506198632510010100101001088784149695510035100358602387401001010020200201003541111002110910100101000064024122994010000100101003610036100361003610036
100241003575061986325100101001010010887841496955100351003586023874010010100202002010035411110021109101001010130640241221000410000100101003610036100361003610036
10024100357506198632510010100101001088784149695510035100358602387401001010020200201003541111002110910100101000064024122994010000100101003610036100361003610036

Test 4: throughput

Count: 8

Code:

  eor x0, x8, x9
  eor x1, x8, x9
  eor x2, x8, x9
  eor x3, x8, x9
  eor x4, x8, x9
  eor x5, x8, x9
  eor x6, x8, x9
  eor 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)0309181e3f51schedule 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
8020413419100000605258010080100801004005000491030613386133863323333418010080200160200133863911802011009910080100100005110419331338380000801001338713387133871338713387
8020413386100000352580100801008010040050004910306133861338633233334180100802001602001338639118020110099100801001000155111319331338380000801001338713387133871338713387
802041338610000035258010080100801004005000491030613386133863323333418010080200160200133863911802011009910080100100005111319231338380000801001338713387133871338713387
802041338610100035258010080100801004005001491030613386133863323333418010080200160200133863911802011009910080100100065110219231338380000801001338713387133871338713387
8020413386101001535258010080100801004005000491030613386133863323333418010080200160200133863911802011009910080100100005111319331338380000801001338713387133871338713387
802041338610000035258010080100801004005001491030613386133863323333418010080200160200133863911802011009910080100100005111319331338380000801001338713387133871338713387
802041338610000035258010080100801004005000491030613386133863323333418010080200160200133863911802011009910080100100005111319321338380000801001338713387133871338713387
802041338610000035258010080100801004005000491030613386133863323333418010080200160200133863911802011009910080100100005111319231338380000801001338713387133871338713387
802041338610100035258010080100801004005000491030613386133863323333418010080200160200133863911802011009910080100100035111319331338380000801001338713387133871338713387
8020413386100000510258010080100801004005000491030613386133863323333418010080200160200133863911802011009910080100100005110319231338380000801001338713387133871338713387

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)03091e3f51schedule uop (52)schedule int uop (53)dispatch int uop (56)int uops in schedulers (59)6061696a6d6emap 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)a9branch mispred nonspec (cb)cdcfd0d2d5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
8002413386100002162580010800108001040005015491029113371133713330333488001080020160020133713911800211091080010100000502053934111336880000800101337213372133721337213372
800241337110000352580010800108001040005015491029113371133713330333488001080020160020133713911800211091080010101000502053131111336880000800101337213372133721337213372
800241337110000352580010800108001040005015491029113371133713330333488001080020160020133713911800211091080010101000502000131111336880000800101337213372133721337213372
800241337110000352580010800108001040005015491029113371133713330333488001080020160020133713911800211091080010100000502954131111336880000800101337213372133721337213372
800241337110000352580010800128001040005000491029113371133713330333488001080020160020133713911800211091080010100000502000131111336880516800101337213372133721337213372
800241337110000352580010800108001040005005491029113371133713330333488001080020160020133713911800211091080010100000502054231111336880000800101337213372133721337213372
800241337110000352580010800108001040005010491029113371133713330333488001080020160020133713911800211091080010100000502054131111336880000800101337213372133721337213372
800241337110000352580010800108001040005005491029113371133713330333488001080020160020133713911800211091080010100000502054131111336880000800101337213372133721337213372
800241337110000352580010800108001040005005491029113371133713330333488001080020160020133713911800211091080010100000502000131111336880000800101337213372133721337213372
8002413371100001182580010800108001040005015491029113371133713330333488001080020160020133713911800211091080010100000502054131111336880000800101337213372133721337213372