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

ORN (register, 64-bit)

Test 1: uops

Code:

  orn 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)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
10041035806186225100010001000169160103510357283868100010002000103541111001100073241229371000100010361036103610361036
10041035806186225100010001000169161103510357283868100010002000103541111001100073241229371000100010361036103610361036
10041035806186225100010001000169160103510357283868100010002000103541111001100073241229371000100010361036103610361036
10041035806186225100010001000169160103510357283868100010002000103541111001100073241229371000100010361036103610361036
10041035806186225100010001000169160103510357283868100010002000103541111001100073241229371000100010361036103610361036
10041035806186225100010001000169160103510357283868100010002000103541111001100073241229371000100010361036103610361036
10041035806186225100010001000169160103510357283868100010002000103541111001100073241229371000100010361036103610361036
10041035806186225100010001000169160103510357283868100010002000103541111001100073241229371000100010361036103610361036
10041035808586225100010001000169160103510357283868100010002000103541111001100073241229371000100010361036103610361036
10041035806186225100010001000169160103510357283868100010002000103541111001100079241229371000100010361036103610361036

Test 2: Latency 1->2

Code:

  orn 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)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
1020410035780619877251010010100101008866404969551003510035858038722101001020020200100354111102011009910010100100260710137111003210000101001003610036100361003610036
102041003578061987725101001010010100886640496955100351003585803872210100102002020010035411110201100991001010010024071013711994110000101001003610036100361003610036
1020410035770103987725101001010010100886640496955100351003585803872210100102002020010035411110201100991001010010020071013711994110000101001003610036100361003610036
10204100357708298772510100101001010088664149695510035100358580387221010010200202001003541111020110099100101001001071013711994110000101001003610036100361003610036
10204100357806198772510100101001010088664049695510035100358580387221010010200202001003541111020110099100101001001071013711994110000101001003610036100361003610036
102041003578061987725101001010010100886640496955100351003585803872210100102002020010035411110201100991001010010032071013711994110000101001003610036100361003610036
102041003578061987725101001010010100886640496955100351003585803872210100102002020010035411110201100991001010010027071013711994110000101001003610036100361003610036
10204100357806198772510100101001010088664049695510035100358580387221010010200202001003541111020110099100101001000071013711994110000101001003610036100361003610036
102041003577061987725101001010010100886640496955100351003585803872210100102002020010035411110201100991001010010001271013711994110000101001003610036100361003610036
102041003578061987725101001010010100886640496955100351003585803872210100102002020010035411110201100991001010010030071013711994110000101001003610036100361003610036

1000 unrolls and 10 iterations

Result (median cycles for code): 1.0035

retire uop (01)cycle (02)033f4d51schedule 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
1002410035784379863251001010010100108878404969551003510035860238740100101002020020100354111100211091010010100064024122994010000100101003610036100361003610036
100241003578619863251001010010100108878404969551003510035860238740100101002020020100354111100211091010010100064024122994010000100101003610036100361003610036
1002410035786698632510010100101001088784049695510035100358602387401001010020200201003541111002110910100101016064024122994010000100101003610036100361003610036
100241003577619863251001010010100108878404969551003510035860238740100101002020020100354111100211091010010100064024122994010000100101003610036100361003610036
100241003578769863251001010010100108878404969551003510035860238740100101002020020100354111100211091010010100064024122994010000100101003610036100361003610036
1002410035778109863251001010010100108878404969551003510035860238740100101002020020100354111100211091010010100064024122994010000100101003610036100361003610036
100241003578799863251001010010100108878404969551003510035860238740100101002020020100354111100211091010010100064024122994010000100101003610036100361003610036
100241003578619863251001010010100108878414969551003510035860238740100101002020020100354111100211091010010101064024122994010000100101003610036100361003610036
1002410035784039863251003410056103189078804969551003510080860438759104741002020372100354111100211091010010100364024122994010000100101003610036100361003610036
100241003578619863251001010010100108878404969551003510035860238740100101002020020100354111100211091010010100064024122994010000100101003610036100361003610036

Test 3: Latency 1->3

Code:

  orn 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)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 cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
1020410035780619877251010010100101008866449695510035100358580387221010010200202001003541111020110099100101001000071023722994110000101001003610036100361003610036
1020410035780619877251010010100101008866449695510035100358580387221010010200202001003541111020110099100101001000071023722994110000101001003610036100361003610036
1020410035780619877251010010100101008866449695510035100358580387221010010200202001003541111020110099100101001001071023722994110000101001003610036100361003610036
1020410035770619877251010010100101008866449695510035100358580387221010010200202001003541111020110099100101001000071023722994110000101001003610036100361003610036
10204100357701039877251010010100101008866449695510035100358580387221010010200202001003541111020110099100101001000071023722994110000101001003610036100361003610036
1020410035780619877251010010100101008866449695510035100358580387221010010200202001003541111020110099100101001000071023722994110000101001003610036100361003610036
1020410035780619877251010010100101008866449695510035100358580387221010010200202001003541111020110099100101001000071023722994110000101001003610036100361003610036
1020410035780619877251010010100101008866449695510035100358580387221010010200202001003541111020110099100101001000071023722994110000101001003610036100361003610036
1020410035780829877251010010100101008866449695510035100358580387221010010200202001003541111020110099100101001000071023722994110000101001003610036100361003610036
1020410035780619877251010010100101008866449695510035100358580387221010010200202001003541111020110099100101001000071023722994110000101001003610036100361003610036

1000 unrolls and 10 iterations

Result (median cycles for code): 1.0035

retire uop (01)cycle (02)03mmu table walk instruction (07)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)9faccfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
10024100357501561986325100101001010010887841496955100351003586023874010010100202002010035411110021109101001010064024122994010000100101003610036100361003610036
1002410035760061986325100101001010010887841496955100351003586023874010010100202002010035411110021109101001010064024122994010000100101003610036100361003610036
1002410035750061986325100101001010010887841496955100351003586023874010010100202002010035411110021109101001010064024122994010000100101003610036100361003610036
10024100357806229986325100101001010010887841496955100351003586023874010010100202002010035411110021109101001010064024122994010000100101003610036100361003610036
10024100357506121986325100101001010010887841496955100351003586023874010010100202002010035411110021109101001010064024122994010000100101003610036100361003610036
10024100357502461986325100101001010010887841496955100351003586023874010010100202002010035411110021109101001010064024122994010000100101003610036100361003610036
10024100357502461986325100101001010010887841496955100351003586023874010010100202002010035411110021109101001010064024122994010000100101003610036100361003610036
10024100357502461986325100101001010010887841496955100351003586023874010010100202002010035411110021109101001010064024122994010000100101003610036100361003610036
1002410035750061986325100101001010010887841496955100351003586023874010010100202002010035411110021109101001010064024122994010000100101003610036100361003610036
10024100357503441986325100101001010010887841496955100351003586023875810010100202002010035411110021109101001010064024122994010000100101003610036100361003610036

Test 4: throughput

Count: 8

Code:

  orn x0, x8, x9
  orn x1, x8, x9
  orn x2, x8, x9
  orn x3, x8, x9
  orn x4, x8, x9
  orn x5, x8, x9
  orn x6, x8, x9
  orn 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)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)accfd0d5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
8020413390103003525801008050580100400500004910306133861338633233334180100802001602001338639118020110099100801001000051106219111338380000801001338713387133871338713387
8020413386104103525801008010080100400500004910306133861338633233334180100802001602001338639118020110099100801001001051100119111338380000801001338713387133871338713387
8020413386104003525801008010080100400500064910306133861338633233334180100802001602001338639118020110099100801001005051100119111338380000801001338713387133871338713387
8020413386103003525801008010080100400500004910306133861338633233334180100802001602001338639118020110099100801001000051100119111338380000801001338713387133871338713387
8020413386104003525801008010080100400500004910306133861338633233334180100802001602001338639118020110099100801001000051100119111338380000801001338713387133871338713387
8020413386104003590801008010080100400500004910306133861338633233334180100802001602001338639118020110099100801001001351106219111338380000801001338713387133871338713387
8020413386104003525801008010080100400500004910306133861338633233334180100802001602001338639118020110099100801001000051100119111338380000801001338713387133871338713387
8020413386104003525801008010080100400500064910306133861338633233334180100802001602001338639118020110099100801001001051100119111338380000801001338713387133871338713387
8020413386104003525801008010080100400500004910306133861338633233334180100802001602001338639118020110099100801001000051100119111338380000801001338713387133871338713387
8020413386103004925801008010080100400500004910306133861338633233334180100802001602001338639118020110099100801001001351100119111338380000801001338713387133871338713387

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)031e1f3f51schedule uop (52)schedule int uop (53)dispatch int uop (56)int uops in schedulers (59)67696a6b6d6emap 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
80024133861000035258001080010800104000500491029101337113371333033348800108002016002013371391180021109108001010005022719571336880000800101337213372133721337213372
800241337110090352580010800108001040005004910291013371133713330333488001080020160020133713911800211091080010100050214191271336880126800101337213372133721337213372
80024133711000041525800108001080010400050049102910133711337133303334880010800201600201337139118002110910800101000502212191351336880000800101337213372133721337213372
8002413371100004432580010916548001040005004910291013371133713330333488001080020160020133713911800211091080010100050224195121336880000800101337213372133721337213372
800241337110000352580010800108001040005004910291013371133713330333488001080020160020133713911800211091080010100050244196121336880000800101337213372133721337213372
80024133711000035258001080010800104000500491029101337113371333033348800108008016002013371391180021109108001010005024419361336880000800101337213372133721337213372
80024133711000035258001080010800104000500491029101337113371333033348800108002016002013371391180021109108001010005022419361336880000800101337213372133721337213372
80024133711000035258001080010800104000500491029101337113371333033348800108002016002013371391180021109108001010005021419661336880000800101337213372133721337213372
8002413371100003525800108001080010400050049102910133711337133303334880010800201600201337139118002110910800101000502112191271336880000800101337213372133721337213372
80024133711000035258001080010800104000500491029101337113371333033348800108002016002013371391180021109108001010005022619771336880000800101337213372133721337213372