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, lsl, 64-bit)

Test 1: uops

Code:

  orn x0, x0, x1, lsl #17
  mov x0, 1
  mov x1, 2

(no loop instructions)

1000 unrolls and 1 iteration

Retires: 1.000

Issues: 2.000

Integer unit issues: 2.000

Load/store unit issues: 0.000

SIMD/FP unit issues: 0.000

retire uop (01)cycle (02)03mmu table walk data (08)1e3f4c4d51schedule 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)l1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
10042035160061100017352520002000100032570203520351575318421000100020002035421110011000039732671117812000100020362036203620362036
1004203516006110001735252000200010003257020352035157531842100010002000203542111001100000731671117812000100020362036203620362036
100420351600156100017352520002000100032570203520351575318421000100020002035421110011000015731671117812000100020362036203620362036
1004203515006110001735252000200010003257020352035157531842100010002000203542111001100000731671117812000100020362036203620362036
1004203515006110001735252000200010003257020352035157531842100010002000203542111001100000731671117812000100020362036203620362036
1004203516006110001735252000200010003257020352035157531842100010002000203542111001100000731671117812000100020362036203620362036
1004203516006110001735252000200010003257020352035157531842100010002000203542111001100000731671117812000100020362036203620362036
1004203516066110001735252000200010003257020352035157531842100010002000203542111001100000731671117812000100020362036203620362036
1004203515006110001735252000200010003257020352035157531842100010002000203542111001100000731671117812000100020362036203620362036
1004203516006110001735252000200010003257020352035157531842100010002000203542111001100000731671117812000100020362036203620362036

Test 2: Latency 1->2

Code:

  orn x0, x0, x1, lsl #17
  mov x0, 1
  mov x1, 2

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code): 2.0035

retire uop (01)cycle (02)031e3f4c4d51schedule 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)acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
102042003515507261000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
10204200351550611000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
10204200351550611000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100030710159111979120000101002003620036200362003620036
10204200351550611000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
10204200351560611000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100002710159111979120000101002003620036200362003620036
10204200351550611000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
10204200351560611000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
1020420035156011021000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
10204200351550611000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
10204200351560611000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0035

retire uop (01)cycle (02)03091e3f4c4d51schedule uop (52)schedule int uop (53)dispatch int uop (56)int uops in schedulers (59)60696a6b6d6emap 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
100242003515000611000019743252001020010100101853101491695502003520035184513187181001010020200202003542111002110910100101000640263221979220000100102003620036200362003620036
100242003515100611000019743252001020010100101853100491695502003520035184513187181001010020200202003542111002110910100101000640263221979220000100102003620036200362003620036
100242003515000611000019743252001020010100101853101491695502003520035184603187181001010020200202003542111002110910100101000640263221979220000100102003620036200362003620036
100242003515000611000019743252001020010100101853101491695502003520035184513187181001010020200202003542111002110910100101000640263221979220000100102003620036200362003620036
100242003515003611000019743252001020010100101853101491695502003520035184513187181001010020200202003542111002110910100101000640263221979220000100102003620036200362003620036
10024200351500162611000019743252001020010100101853101491695502003520035184513187181001010020200202003542111002110910100101023640263221979220000100102003620036200362003620036
1002420035150096611000019743252001020010100101853101491695502003520035184513187181001010020200202003542111002110910100101000640263221979220000100102003620036200362003620036
1002420035150018611000019743252001020010100101853101491695502003520035184513187181001010020200202003542111002110910100101000640263221979220000100102003620036200362003620036
100242003515000611000019743252001020010100101853101491695502003520035184513187181001010020200202003542111002110910100101000640263221979220000100102003620036200362003620036
1002420035150009431000019743252001020010100101853101491695502003520035184513187181001010020200202003542111002110910100101000640263221979220000100102003620036200362003620036

Test 3: Latency 1->3

Code:

  orn x0, x1, x0, lsl #17
  mov x0, 1
  mov x1, 2

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code): 2.0035

retire uop (01)cycle (02)03191e1f3f4c4d51schedule 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)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
102042003515502106110000198032520100201001011118498514916955200352003518477718735101111023220264200354211102011009910010100100003111720016001984420000101002003620036200362003620036
10204200351560006110000198032520100201001011118498514916955200352003518477718735101111023220264200354211102011009910010100100200111720016001984520000101002003620036200362003620036
102042003515600010310000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000000710159111979120000101002003620036200362003620036
10204200351550006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000000710159111979120000101002003620036200362003620036
10204200351560006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000000710159111979120000101002003620036200362003620036
102042003515503306110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000000710159111979120000101002003620036200362003620036
10204200351550006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000000710159111979120000101002003620036200362003620036
10204200351550006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000000710159111979120000101002003620036200362003620036
10204200351560006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000000710159111979120000101002003620036200362003620036
102042003515500015610000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000000710159111979120000101002003620036200362003620036

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0035

retire uop (01)cycle (02)031e3a3f4c4d51schedule 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)st unit uop (a7)l1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
10024200351550061100001974325200102001010010185310049169552003520035184513187181001010020200202003542111002110910100101000000640263221979220000100102003620036200362003620036
10024200351550061100001974325200102001010010185310049169552003520035184513187181001010020200202003542111002110910100101000033640263221979220000100102003620036200362003620036
10024201261550061100001974325200102001010010185310049169552003520035184513187181001010020200202003542111002110910100101000000640263221979220000100102003620036200362003620036
100242003515500611000019743252001020010100101853100491695520035200351845131871810010100202002020035421110021109101001010000603640263221979220000100102003620036200362003620036
10024200351550061100001974325200102001010010185310049169552003520035184513187181001010020200202003542111002110910100101000000640263221979220000100102003620036200362003620036
100242003515600346100001974325200102001010010185310049169552003520035184513187181001010020200202003542111002110910100101000000640263221979220000100102003620036200362003620036
100242003515600611000019743252001020010100101853100491695520035200351845131871810010100202002020035421110021109101001010000383640263221979220000100102003620036200362003620036
10024200351550061100001974325200102001010010185310049169552003520035184513187181001010020200202003542111002110910100101000023640263221979220000100102003620036200362003620036
100242003515500611000019743252001020010100101853101491695520035200351845131871810010100202002020035421110021109101001010000163640263221979220000100102003620036200362003620036
100242003515500611000019743252001020010100101853101491695520035200351845131871810010100202002020035421110021109101001010000018640263221979220000100102003620036200362003620036

Test 4: throughput

Count: 8

Code:

  orn x0, x8, x9, lsl #17
  orn x1, x8, x9, lsl #17
  orn x2, x8, x9, lsl #17
  orn x3, x8, x9, lsl #17
  orn x4, x8, x9, lsl #17
  orn x5, x8, x9, lsl #17
  orn x6, x8, x9, lsl #17
  orn x7, x8, x9, lsl #17
  mov x8, 9
  mov x9, 10

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code divided by count): 0.3341

retire uop (01)cycle (02)03mmu table walk instruction (07)mmu table walk data (08)l2 tlb miss data (0b)0e18191e1f3f4c4d51schedule 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)acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
802042677320700000000618000026094251601001601008010016431814923645267252672516615316677801008041716063226725391180201100991008010010000251103222226717160000801002702326962270232696026962
8020427081210011077675616618000026094251601001601008010016431814923645267252672516615316677801008020016020026725391180201100991008010010000051102222226717160000801002672626726267262672626726
802042672520700000000618000026094251601001601008010016431814923645267252672516615316677801008020016020026725391180201100991008010010010051102222226717160000801002672626726267262672626726
8020426725207000000001608000026094251601001601008010016431804923645267252672516615316677801008020016020026725391180201100991008010010020051102222226717160000801002672626726267262672626726
802042672520700000000618000026094251601001601008010016431804923645267252672516615316677801008020016020026725391180201100991008010010000051102222226717160000801002672626726267262672626726
802042672520700000000618000026094251601001601008010016431804923645267252672516615316677801008020016020026725391180201100991008010010003051102222226717160000801002672626726267262672626726
802042672520700000000618000026094251601001601008010016431804923645267252672516615316677801008020016020026725391180201100991008010010003051102222226717160000801002672626726267262672626726
80204267252070000001207268000026094251601001601008010016431814923645267252672516615316677801008020016020026725391180201100991008010010010051102222226717160000801002672626726267262672626726
802042672520800000000618000026094251601001601008010016431804923645267252672516615316677801008020016020026725391180201100991008010010000051103222226717160000801002672626726267262672626726
802042672520700000000618000026094251601001601008010016431804923645267252672516615316677801008020016020026725391180201100991008010010000051102222226717160000801002672626726267262672626726

1000 unrolls and 10 iterations

Result (median cycles for code divided by count): 0.3339

retire uop (01)cycle (02)03mmu table walk instruction (07)mmu table walk data (08)09l2 tlb miss instruction (0a)l2 tlb miss data (0b)18191e1f3f4c4d51schedule 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)ld unit uop (a6)l1d cache writeback (a8)acc2cfd2d5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)eb? int retires (ef)f5f6f7f8fd
8002426717207000000060117800002128025160010160010800101631420492363126711267111662331668580010800201600202671139118002110910800101000000502001822513267041600000800102671226712267122671226712
800242671120700000000061800002128025160010160010800101631421492363126711267111662331668580010800201600202671139118002110910800101000000502001322146267041600000800102671226712267122671226712
80024267112070000000006180000212802516001016001080010163142049236312671126711166233166858001080020160020267113911800211091080010100000050200132294267041600000800102671226712267122671226712
80024267112070000000006180000212802516001016001080010163142049236312671126711166233166858001080020160020267113911800211091080010100000050200132294267041600000800102671226770267702671226712
8002426711207000000000618000021280251600101600108001016314204923631267112671116623316685800108002016002026711391180021109108001010000005020062247267041600000800102671226712267122671226712
8002426711207000000000618000021280251600101600108001016314214923631267112671116623316685800108002016002026711391180021109108001010000005020092283267041600000800102671226712267122671226712
80024267112070000000006180000212802516001016001080010163142049236312671126711166233166858001080020160020267113911800211091080010100000050200822136267041600000800102671226712267122671226712
800242671120600000000061800002128025160010160010800101631420492363126711267111662331668580010800201600202671139118002110910800101000000502001322135267041600000800102671226712267122671226712
8002426770208011110000618000021280251600101600108001016314204923631267112671116623316685800108002016002026711391180021109108001010000005020092249267041600000800102671226712267122671226712
800242671120700000000011780000212802516001016001080010163142149236312671126711166233166858001080020160020267113911800211091080010100000050200422513267041600000800102671226712267122671226712