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, lsl, 32-bit)

Test 1: uops

Code:

  eor w0, w0, w1, 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)18191e1f3a3f4c4d51schedule 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 tlb access (a0)l1d tlb miss (a1)ld unit uop (a6)l1d cache writeback (a8)a9acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
10042035150000006110001735252000200010003257012035203515753184210001000200020354211100110000000000731671117812000100020362036203620362036
1004203515000132006110001735252000200010003257012035203515753184210001000200020354211100110000000000731671117812000100020362036203620362036
10042035150000006110001735252000200010003257012035203515753184210001000200020354211100110000000000731671117812000100020362036203620362036
10042035150000006110001735252000200010003257012035203515753184210001000200020354211100110000000000731671117812000100020362036203620362036
10042035150000006110001735252000200010003257012035203515753184210001000200020354211100110000000000731671117812000100020362036203620362036
10042035150000006110001735252000200010003257012035203515753184210001000200020354211100110000000000731671117812000100020362036203620362036
10042035150000006110001735252000200010003257012035203515753184210001000200020354211100110000000000731671117812000100020362036203620362036
10042035150000006110001735252000200010003257012035203515753184210001000200020354211100110000000000941671117812000100020362036203620362036
100420351500000010310001735252000200010003257012035203515753184210001000200020354211100110000000000731671117812000100020362036203620362036
10042035150000006110001735252000200010003257012035203515753184210001000200020354211100110000000000731671117812000100020362036203620362036

Test 2: Latency 1->2

Code:

  eor w0, w0, w1, 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)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
102042003515006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
102042003515006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
102042007815006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
102042003515006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
1020420035150094610000197554520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000710259111979120000101002003620036200362003620036
102042003515006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
102042003515006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
102042003515006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
102042003515006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
102042003515006110027198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000734159111979120000101002003620036200362003620036

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0035

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)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)st unit uop (a7)l1d cache writeback (a8)a9acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
100242003515000000061100001974325200102001010010185310049169552003520035184513187181001010020200202003542111002110910100101000000000640263221979220000100102003620036200362003620036
100242003515000000061100001974325200102001010010185310049169552008020035184513187181001010020200202003542111002110910100101000000000640263221979220000100102003620036200362003620036
100242003515000000061100001974325200102001010010185310049169552003520035184513187181001010020200202003542111002110910100101000000000640263221979220000100102003620036200362003620036
100242003515000000061100001974325200102001010010185310049169552003520035184513187181001010020200202003542111002110910100101000000000640263221979220000100102003620036200362003620036
100242003515000000061100001974325200102001010010185310049169552003520035184513187181001010020200202003542111002110910100101000000000640263221979220000100102003620036200362003620036
100242003515000000061100001974325200102001010010185310049169552003520035184513187181001010020200202003542111002110910100101000000000640263251979220000100102003620036200362003620036
1002420035150000000103100001974325200102001010010185310049169552003520035184513187181001010020200202003542111002110910100101000000000640263221979220000100102003620036200362003620036
100242003515000000061100001974325200102001010010185310249169552003520035184513187181001010020200202003542111002110910100101000000000640263221979220000100102003620036200362003620036
100242003515000000061100001974325200102001010010185310049169552003520035184513187181001010020200202003542111002110910100101000000000640263221979220000100102003620036200362003620036
1002420035150000000959100001974325200102001010010185310049169552003520035184513187181001010020200202003542111002110910100101000000000640263221979220000100102003620036200362003620036

Test 3: Latency 1->3

Code:

  eor w0, w1, w0, 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)033f4c4d51schedule 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
102042003515061100001975825201002010010416185342491695520035200351842931870010100102002020020035421110201100991001010010000710259221979120000101002003620036200362003620036
102042003515061100001980325201002010010100185342491695520035200351842931870010100102002020020035421110201100991001010010000710259221979120000101002003620036200362003620036
102042003515082100001980325201002010010100185342491695520035200351842931870010100102002020020035421110201100991001010010000710259221979120000101002003620036200362003620036
1020420035150611000019803252010020100101001853429816955200352003518429318700101001020020200200354211102011009910010100100072710259221979120000101002003620036200362003620036
102042003515061100001980325201002010010100185342491695520035200351842931870010100102002020020035421110201100991001010010000710259221979120000101002003620036200362003620036
102042003515061100181980325201002010010100185342491695520035200351842931870010100102002020020035421110201100991001010010000710259221979120000101002003620036200362003620036
102042003515061100001980325201002010010100185342491695520035200351842931870010100102002020020035421110201100991001010010000710259221979120000101002003620036200362003620036
102042003514961100001980325201002010010100185342491695520035200351842931870010100102002020020035421110201100991001010010000710259221979120000101002003620036200722003620036
102042003515061100001980325201002010010100185342491695520035200351842931870010100102002020020035421110201100991001010010003710259221979120000101002003620036200362003620036
102042003515061100001980325201002010010100185342491695520035200351842931870010100102002020020035421110201100991001010010000710259221979120000101002003620036200362003620036

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0035

retire uop (01)cycle (02)03191e3f4c4d51schedule uop (52)schedule int uop (53)dispatch int uop (56)int uops in schedulers (59)696a6d6emap 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)9faccfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
10024200351500010310000197432520010200101001018531049169552003520035184510318718100101002020020200354211100211091010010100640263221979220000100102003620036200362003620036
1002420035150006110000197432520010200101001018531049169552003520035184510318718100101002020020200354211100211091010010100640263221979220000100102003620036200362003620036
1002420035150006110000197432520010200101001018531049169552003520035184510718718100101002020020200354211100211091010010100640263221979220000100102003620036200362003620036
1002420035150006110000197432520010200101001018531049169552003520035184510318718100101002020020200684211100211091010010100640263221979220000100102003620036200362003620036
10024200351500076810000197432520010200101001018531049169552003520035184510318718100101002020020200354211100211091010010100640263221979220000100102003620036200362003620036
1002420035150006110000197432520010200101001018531049169552003520035184510318718100101002020020200354211100211091010010100640263221979220000100102003620036200362003620036
1002420035150006110000197432520010200101001018531049169552003520035184510318718100101002020020200354211100211091010010100640263221979220000100102003620036200362003620036
1002420035150006110000197432520010200101001018531049169552003520035184510318718100101002020020200354211100211091010010100640263221979220000100102003620036200362003620036
1002420035150006110000197432520010200101001018531049169552003520035184510318718100101002020020200354211100211091010010100640263221979220000100102003620036200362003620036
1002420035150006110000197432520010200101001018531049169552003520035184510318718100101002020020200354211100211091010010100640263221979220000100102003620036200362003620036

Test 4: throughput

Count: 8

Code:

  eor w0, w8, w9, lsl #17
  eor w1, w8, w9, lsl #17
  eor w2, w8, w9, lsl #17
  eor w3, w8, w9, lsl #17
  eor w4, w8, w9, lsl #17
  eor w5, w8, w9, lsl #17
  eor w6, w8, w9, lsl #17
  eor w7, w8, w9, 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)1e3f4c4d51schedule 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)9fa9cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
80204267502000089380000260942516010016010080125163758049236512672526725166153166778010080200160200267253911802011009910080100100051102221126717160000801002672626726267262672626726
80204267252001089780000260942516010016010080100164318049236452672526725166153166778010080200160200267253911802011009910080100100051101221126717160000801002672626726267262672626726
80204267252001076580000260942516010016010080100164318149236452672526725166153166778010080200160200267253911802011009910080100100051101221126717160000801002672626726267262672626726
80204267252000088280000260942516010016010080125163758149236452672526725166153166778010080200160200267253911802011009910080100100051101221126717160000801002672626726267262672626726
80204267252000087080000260942516010016010080100164318049236452672526725166153166778010080200160200267253911802011009910080100100051101221126717160000801002673226732267322673226726
80204267252000079080000260942516010016010080100164318049236452672526725166153166778010080200160200267253911802011009910080100100051101221126717160000801002672626785267262672626726
80204267252000088780000260942516010016010080100164318049237112672526725166153166778010080200160200267253911802011009910080100100051104231126717160000801002672626726267262672626726
80204267252000093880000260942516010016010080100164318049236452672526725166153166778010080200160200267253911802011009910080100100051101221126717160000801002672626726267262672626726
8020426725200006180000260942516010016010080100164318049236452672526725166153166778010080200160200267253911802011009910080100100051104171126717160000801002672626726267262672626726
80204267252000087380000260942516010016010080100164318049236452672526725166153166778010080200160200267253911802011009910080100100051101221126717160000801002672626726267262672626726

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)03l1i tlb fill (04)mmu table walk data (08)09l2 tlb miss instruction (0a)l2 tlb miss data (0b)18191e1f3a3f4c4d51schedule 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)st unit uop (a7)l1d cache writeback (a8)a9acc2branch cond mispred nonspec (c5)cfd0d2l1i tlb miss demand (d4)d5map dispatch bubble (d6)dbddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
80024267342000000000000618000021280251600101600108001016314214923631267112671116623316685800108002016002026711391180021109108001010000000000502021011722016826755160000800102671226712267122671226712
800242671120010000000006180000212802516001016001080010163142149236312671126711166233166858001080020160020267113911800211091080010100000000005021210114220191526704160000800102671226712267122671226712
80024267112001000000000618000021280251600101600108001016314214923631267112671116623316685800108002016002026711391180021109108001010000000000502118018390161426704160000800102671226712267122671226712
80024267112001000000000618000021280251600101600108001016314214923631267112671116623316685800108002016002026711391180021109108001010000060000502124011722017826704160000800102671226712267122671226712
800242671120000000000006180000212802516001016001080010163142149236312671126711166233166858001080020160020267113911800211091080010100000000005021210114220101726704160000800102671226712267122671226712
800242671120010000000006180000212802516001016001080010163142149236312671126711166233166858001080020160020267113911800211091080010100000000005021210116220171726704160000800102671226712267122671226712
800242671120010000000006180000212802516001016001080010163142149236312671126711166233166858001080020160020267113911800211091080010100000000005021210117220181526704160000800102671226712267122671226712
800242671120000000000006180000212802516001016001080010163142149236312671126711166233166858001080020160020267113911800211091080010100000200005020150114540161726704160000800102671226712267122671226712
8002426711200100000000098580000212802516001016001080010163142149236312671126711166233166858001080020160020267113911800211091080010100000000015021210117220171026704160000800102671226712267122671226712
80024267112001000000000251800002128025160010160010800101631421492363126711267111662331668580010800201600202671139118002110910800101000000000050212101822081726704160000800102671226712267122671226712