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, asr, 64-bit)

Test 1: uops

Code:

  eor x0, x0, x1, asr #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)031e3f4c4d51schedule 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)l1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
1004203515061100017352520002000100032570020352035157531842100010002000203542111001100000731671117812000100020362036203620362036
1004203515061100017352520002000100032570120352035157531842100010002000203542111001100000731671117812000100020362036203620362036
10042035156061100017352520002000100032570120352035157531842100010002000203542111001100000731671117812000100020362036203620362036
10042035150611000173525200020001000325701203520351575318421000100020002035421110011000018731671117812000100020362036203620362036
1004203515061100017352520002000100032570020352035157531842100010002000203542111001100000731671117812000100020362036203620362036
1004203515061100017352520002000100032570120352035157531842100010002000203542111001100000731671117812000100020362036203620362036
1004203515084100017352520002000100032570120352035157531842100010002000203542111001100000731671117812000100020362036203620362036
1004203515061100017352520002000100032570120352035157531842100010002000203542111001100000731671117812000100020362036203620362036
10042035160124100017352520002000100032570120352035157531842100010002000203542111001100000731671117812000100020362036203620362036
1004203515061100017352520002000100032570020352035157531842100010002000203542111001100000731671117812000100020362036203620362036

Test 2: Latency 1->2

Code:

  eor x0, x0, x1, asr #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)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 tlb miss (a1)l1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
10204200351503961100001980325201002010010100185342049169550200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
1020420035150061100001980325201002010010100185342049169550200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
1020420035150061100001980325201002010010100185342049169550200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
1020420035150061100001980325201002010010100185342049169550200352003518429318700101001020020200200354211102011009910010100100006710159111979120000101002003620036200362003620036
10204200351509961100001980325201002010010100185342149169550200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
1020420035150246726100181977325201002010010100185342049169550200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
10204200351502461100001980325201002010010100185342049169550200352003518429318700101001020020200200354211102011009910010100100010710159111979120000101002003620036200362003620036
1020420035150061100001980325201002010010100185342049169550200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
1020420035150061100001980325201002010010100185342149169550200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
1020420035150061100001980325201002010010100185342049169550200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036

1000 unrolls and 10 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)9fld unit uop (a6)l1d cache writeback (a8)a9accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
10024200351500611000019743252001020010100101853104916955200352003518451318718100101002020020200354211100211091010010100001972640263221979220000100102003620036200362003620036
10024200351500611000019743252001020010100101853104916955200352003518451318718100101002020020200354211100211091010010100000640263221979220000100102003620036200362003620036
10024200351500611000019743252001020010100101853104916955200352003518451318718100101002020020200354211100211091010010100203640263221979220000100102003620036200362003620036
100242003515005361000019743252001020010100101853104916955200352003518451318718100101002020020200354211100211091010010100000640263221979220000100102003620036200362003620036
100242003515006110000197432520010200101001018531049169552003520035184513187181001010020200202003542111002110910100101002903640263221979220000100102003620036200362003620036
10024200351500611000019743252001020010100101853104916955200352003518451318718100101002020020200354211100211091010010100202058640263221979220000100102003620036200362003620036
10024200351500611000019743252001020010100101853104916955200352003518451318718100101002020020200354211100211091010010100000640263221979220000100102003620036200362003620036
10024200351503611000019743252001020010100101853104916955200352003518451318718100101002020020200354211100211091010010100000640263221979220000100102003620036200362003620036
100242003515006110000197432520010200101001018531049169552003520035184512418718100101002020020200354211100211091010010100000640263221979220000100102003620036200362003620036
100242003515006110000197432520010200101001018531049169552003520035184513187181001010020200202003542111002110910100101004003640263221979220000100102003620036200362003620036

Test 3: Latency 1->3

Code:

  eor x0, x1, x0, asr #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)03l2 tlb miss data (0b)1e1f3f4c4d51schedule 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
10204200351500006110000198032520100201001011118498514916955200352003518477718735101111023220264200354211102011009910010100100000111720016001984520000101002003620036200362003620036
102042003515000889610000198032520100201001011118534214916955200352003518429318700101001020020200200354211102011009910010100100002033000710159111979120000101002003620036200362003620036
10204200351500006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000000710159111979120000101002003620070200362003620036
10204200351500009110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000000710159111979120000101002003620036200362003620036
10204200351500006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000000710159111979120000101002003620036200362003620036
10204200351500006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000000710159111979120000101002003620036200362003620036
10204200791490006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000000710159111979120000101002003620036200362003620036
10204200351500606110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000000710159111979120000101002003620036200362003620036
10204200351500006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000000710159111979120000101002003620036200362003620036
10204200351500006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000000710159111979120000101002003620036200362003620036

1000 unrolls and 10 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)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)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
100242003515006110000197432520010200101001018531014916955200352003518451318718100101002020020200354211100211091010010100030640263221979220000100102003620036200362003620036
1002420035150061100001974325200102001010010185310149169552003520035184513187181001010020200202003542111002110910100101025330640263221979220000100102003620036200362003620036
100242003515006110000197432520010200101001018531014916955200352003518451318718100101002020020200354211100211091010010100000640263221979220000100102003620036200362003620036
100242003515006110000197432520010200101001018531004916955200352003518451318718100101002020020200354211100211091010010100000640263221979220000100102003620036200362003620036
100242003515006110000197432520010200101001018531004916955200352003518451318718100101002020020200354211100211091010010100160640263221979220000100102003620036200362003620036
100242003515006110000197432520010200101001018531004916955200352003518451318718100101002020020200354211100211091010010100000640263221979220000100102003620036200362003620036
100242003515006110000197432520010200101001018531004916955200352003518451318718100101002020020200354211100211091010010100000640263221979220000100102003620036200362003620036
100242003515006110000197432520010200101001018531004916955200352003518451318718100101002020020200354211100211091010010100000640263221979220000100102003620036200362003620036
100242003515006110000197432520010200101001018531004916955200352003518451318718100101002020020200354211100211091010010100000640263221979220000100102003620036200362003620036
100242003515006110000197432520010200101001018531004916955200352003518451318718100101002020020200358711100211091010010100000640263221979220000100102003620036200362003620036

Test 4: throughput

Count: 8

Code:

  eor x0, x8, x9, asr #17
  eor x1, x8, x9, asr #17
  eor x2, x8, x9, asr #17
  eor x3, x8, x9, asr #17
  eor x4, x8, x9, asr #17
  eor x5, x8, x9, asr #17
  eor x6, x8, x9, asr #17
  eor x7, x8, x9, asr #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 data (08)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)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)9fld unit uop (a6)l1d cache writeback (a8)acc2branch mispred nonspec (cb)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
80204267672010000001738000026094251601001601008010016431804923645267252672516615031667780100802001602002672539118020110099100801001000000051102221126717160000801002672626726267262672626726
8020426725201000000618000026094251601001601008010016431804923645267252672516615031667780100802001602002672539118020110099100801001000000051101221126717160000801002672626726267262672626726
8020426725200000000618000026094251601001601008010016431814923645267252672516615031667780100804171602002672539118020110099100801001000000051101221126717160000801002672626726267262672626726
8020426725214000000618000026094251601001601008010016431804923645267252672516615031667780100802001602002672539118020110099100801001000000051101221126717160000801002672626726267262672626726
8020426725200000000618000026094251601001601008010016431814923645267252672516615031667780100802001602002672539118020110099100801001000000051101221126717160000801002672626726267262672626726
8020426725200000000618000026094251601001601008010016431804923645267252672516615031667780100802001602002672539118020110099100801001000000051101221126717160000801002672626726267262672626726
8020426725201000000618000026094251601001601008010016431804923645267252672516615031667780100802001602002672539118020110099100801001000000051101221126717160000801002672626726267262672626726
8020426725200000000618000026094251601001601008010016431814923645267252672516615031667780100802001602002672539118020110099100801001000000051101221126717160000801002672626726267262672626726
8020426725200000000618000026094251601001601008010016431804923645267252672516615031667780100802001602002672539118020110099100801001000000051101221126717160000801002672626726267262672626726
8020426725200000000618000026094251601001601008010016431804923645267252672516615031667780100802001602002672539118020110099100801001000000051101221126717160000801002672626726267262672626726

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)0309l2 tlb miss data (0b)193f4c4d51schedule 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 miss (a1)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
8002426729200000618000021280251600101600108001016314249236312671126711166233166858001080020160020267113911800211091080010100050201221126704160000800102671226712267122671226712
8002426711200000618000021280251600101600108001016314249236312671126711166233166858001080020160020267113911800211091080010100050201221126704160000800102671226712267122671226712
8002426711200000618000021280251600101600108001016314249236312671126711166233166858001280020160020267113911800211091080010100050201221126704160000800102671226712267122671226712
8002426711200000618000021280251600101600108001016400749236312671126711166233166858001080020160020267113911800211091080010100050201221126704160000800102671226712267122671226712
8002426711200000618000021280251600101600108001016314249236312671126711166233166858001080020160020267113911800211091080010100050201221126704160000800102671226712267122671226712
8002426711200000618000021280251600101600108001016314249236312671126711166233166858001080020160020267113911800211091080010100050201221126704160000800102671226712267122671226712
8002426711200000618000021280251600101602838001016314249236312671126711166233166858001080020160020267113911800211091080010100050201221126704160000800102671226712267122671226712
8002426711200000618000021280251600101600108001016314249236312671126711166233166858001080020160020267113911800211091080010100050201221126704160000800102671226712267122671226712
8002426711199000618000021280251600101600108001016314249236312671126711166233166858001080020160020267113911800211091080010100050201222126708160000800102671226712267122671226712
800242671119900061800002128025160010160010800101631424923631267112671116623316685800108002016002026711391180021109108001010015050201221126704160000800102671226712267122671226712