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

EON (register, ror, 32-bit)

Test 1: uops

Code:

  eon w0, w0, w1, ror #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
1004203516061100017352520002000100032570120352035157531842100010002000203542111001100003731671117812000100020362036203620362036
10042035155761100017352520002000100032570020352035157531842100010002000203542111001100000731671117812000100020362036203620362036
10042035168461100017352520002000100032570020352035157531842100010002000203542111001100000731671117812000100020362036203620362036
1004203515084100017352520002000100032570020352035157531842100010002000203542111001100000731671117812000100020362036203620362036
1004203516061100017352520002000100032570020352035157531842100010002000203542111001100000731671117812000100020362036203620362036
10042035163061100017352520002000100032570020352035157531842100010002000203542111001100000731671117812000100020362036203620362036
10042035161261100017352520002000100032570020352035157531842100010002000203542111001100000731671117812000100020362036203620362036
10042035150156100017352520002000100032570020352035157531842100010002000203542111001100000731671117812000100020362036203620362036
1004203516061100017352520002000100032570020352035157531842100010002000203542111001100000731671117812000100020362036203620362036
1004203516061100017352520002000100032570020352035157531842100010002000203542111001100000731671117812000100020362036203620362036

Test 2: Latency 1->2

Code:

  eon w0, w0, w1, ror #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)03mmu table walk data (08)191e1f3f4c4d51schedule 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)91inst 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
102042003515500006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009901001010010000078710159111979120000101002003620036200362003620036
10204200351550000611000019803252010020100101001853421491695520035200351842931870010100102002020020035421110201100990100101001000003710159111979120000101002003620036200362003620036
10204200351550000611000019803252010020100101001853420491695520035200351842931870010100102002020020035421110201100990100101001000009710159111979120000101002003620036200362003620036
10204200351550000611000019803252010020100101001853421491695520035200351842931870010100102002020020035421110201100990100101001000000710159111979120000101002003620036200362003620036
102042003515500006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009901001010010000012710159111979120000101002003620036200362003620036
10204200351550000611000019803252010020100101001853420491695520035200351842931870010100102002020020035421110201100990100101001000000710159111979120000101002003620036200362003620036
102042003515500120611000019803252010020100101001853421491695520035200351842931870010100102002020020035421110201100990100101001000000710159111979120000101002003620036200362003620036
10204200351550000611000019803252010020100101001853421491695520035200351842931870010100102002020020035421110201100990100101001000000710159111979120000101002003620036200362003620036
10204200351550000611000019803252010020100101001853420491695520035200351842931870010100102002020020035421110201100990100101001000000710159111979120000101002003620036200362003620036
10204200351560000611000019803252010020100101001853421491695520035200351842931870010100102002020020035421110201100990100101001000000710159111979120000101002003620036200362003620036

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0035

retire uop (01)cycle (02)03l2 tlb miss data (0b)191e1f3a3f4c4d51schedule 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)acc2branch cond mispred nonspec (c5)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
1002420035155000006110000197432520010200101001018531014916955200352003518451318718100101002020020200354211100211091010010100000640263221979220000100102003620036200362003620036
10024200351550000014710000197432520010200101001018531004916955200352003518451318718100101002020020200354211100211091010010100000640263221979220000100102003620036200362003620036
10024200351550000022910000197432520010200101001018531014916955200352003518451318718100101002020020200354211100211091010010100000640263221979220000100102017120081200812003620036
10024200351550000019110000197432520010200101001018531014916955200352003518451318718100101002020020200354211100211091010010100000640263221979220000100102003620036200362003620036
10024200351550012008210000197432520010200101001018531014916955200352003518451318718100101002020020200354211100211091010010100000640263221979220000100102003620036200362003620036
1002420035156000008210000197432520010200101001018531004916955200352003518451318718100101002020020200354211100211091010010100000640263221979220000100102003620036200362003620036
1002420035155000006110000197432520010200101001018531014916955200352003518451318718100101002020020200354211100211091010010100000640263221979220000100102003620036200362003620036
10024200351560000031210000197432520010200101001018531014916955200352003518451318718100101002020020200354211100211091010010100000640263221979220000100102003620036200362003620036
10024200351550000012610000197432520010200101001018531014916955200352003518451318718100101002020020200354211100211091010010101000640263221979220000100102003620036200362003620036
10024200351550000039510000197432520010200101001018531014916955200352003518451318718100101002020020200354211100211091010010100000640263221979220000100102003620036200362003620036

Test 3: Latency 1->3

Code:

  eon w0, w1, w0, ror #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)03mmu table walk data (08)18191e3f4c4d51schedule 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)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
102042003515600006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
1020420035155000666110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
1020420035155000276110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
1020420035156000061100001980325201002010010100185342149169552003520035184291818700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
1020420035155000816110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
10204200351550003576110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
1020420035155000606110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
10204200351560003756110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
102042003515500006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
1020420035155000486110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0035

retire uop (01)cycle (02)03l1i tlb fill (04)l2 tlb miss data (0b)1e3f4c4d51schedule 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)accdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
1002420035155000611000019743252001020010100101853104916955200352003518451318718100101002020020200354211100211091010010106330640463341979220000100102003620036200362003620036
100242003515500061100001974325200102001010010185310491695520035200351845131871810010100202002020035421110021109101001010060640463321979220000100102003620036200362003620036
100242003515500061100001974325200102001010010185310491695520035200351845131871810010100202002020035421110021109101001010060640463341979220000100102003620036200362003620036
100242003515600061100001974325200102001010010185310491695520035200351845131871810010100202002020035421110021109101001010030640463331979220000100102003620036200362003620036
100242003515600061100001974325200102001010010185310491695520035200351845131871810010100202002020035421110021109101001010000640363341979220000100102003620036200362003620036
100242003515600061100001974325200102001010010185310491695520035200351845131871810010100202002020035421110021109101001010030640363441979220000100102003620036200362003620036
100242003515600061100001974325200102001010010185310491695520035200351845131871810010100202002020035421110021109101001010061640463341979220000100102003620036200362003620036
1002420035155000611000019743252001020010100101853104916955200352003518451318718100101002020020200354211100211091010010100750640363441979220000100102003620036200362003620036
100242003515500061100001974325200102001010010185310491695520035200351845131871810010100202002020035421110021109101001010000640363341979220000100102003620036200362003620036
100242003515500061100001974325200102001010010187041491695520035200351845131871810010100202002020035421110021109101001010000640263331979220000100102003620036200362003620036

Test 4: throughput

Count: 8

Code:

  eon w0, w8, w9, ror #17
  eon w1, w8, w9, ror #17
  eon w2, w8, w9, ror #17
  eon w3, w8, w9, ror #17
  eon w4, w8, w9, ror #17
  eon w5, w8, w9, ror #17
  eon w6, w8, w9, ror #17
  eon w7, w8, w9, ror #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)030f181e1f3f4c4d51schedule uop (52)schedule int uop (53)dispatch int uop (56)int uops in schedulers (59)67696a6d6emap 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)acc2cdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
8020426770207000061800002609425160100160100801001643180492364526725267251661531667780100802001602002672539118020110099100801001000000051102221126717160000801002672626726267262672626726
80204267252070000208800002609425160100160100801001643180492364526725267251661531667780100802001602002672539118020110099100801001000000051101221126717160000801002672626726267262672626726
80204267252080000145800002609425160100160100801001643180492364526725267251661531667780100802001602002672539118020110099100801001000000051101221126717160000801002672626726267262672626726
80204267252070000252800002609425160100160100803331675710492364526725267251661531667780100802001602002672539118020110099100801001000000051101221126717160000801002672626726267262672626726
8020426725207000061800002609425160100160100801001643180492364526725267251661531667780100802001602002672539118020110099100801001000000051101221126717160000801002672626726267262672626726
80204267252070000103800002609425160100160100801001643180492364526725267251661531667780100802001602002672539118020110099100801001000100051101221126717160000801002672626726267262672626726
80204267252070000208800002609425160100160100801001643180492364526725267251661531667780100802001602002672539118020110099100801001000000051101221126717160000801002672626726267262672626726
80204267252070000124800002609425160100160100801001643180492364526725267251661531667780100802001602002672539118020110099100801001000000051101221126717160000801002672626726267262672626726
80204267252070000846800002609425160100160100801001643180492364526725267251661531667780100802001602002672539118020110099100801001000000051101221126717160000801002672626726267262672626726
80204267252070000124800002609425160100160100801001643180492364526725267251661531667780100802001602002672539118020110099100801001000000051101221126717160000801002672626726267262672626726

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)030e1e3a3f4c4d51schedule 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)accfd0d5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
80024267342072120618000021280251600101600108001016314204923631267112671116623316685800108002016002026711391180021109108001010005020011225326704160000800102671226712267122671226712
8002426711207012061800002128025160010160010800101631420492363126711267111662331668580010800201600202671139118002110910800101000502006225526704160000800102671226712267122671226712
8002426711207001131800002128025160010160010800101631420492363126711267111662331668580010800201600202671139118002110910800101000502004223526704160000800102671226712267122671226712
80024267112070210103800002128025160010160010800101631420492363126711267111662331668580010800201600202671139118002110910800101010502005224626704160000800102671226712267122671226712
8002426711207027061800002128025160010160010800101631420492363126711267111662331668580010800201600202671139118002110910800101000502005224626704160000800102671226712267122671226712
8002426711207027061800002128025160010160010800101631420492363126711267111662331668580010800201600202671139118002110910800101000502004224526704160000800102671226712267122671226712
8002426711207012061800002128025160010160010800101631421492363126711267111662331668580010800201600202671139118002110910800101000506335223526704160000800102671226712267122671226712
8002426711207027061800002128025160010160010800101631421492363126711267111662331668580010800201600202671139118002110910800101000502006227426704160000800102671226712267122671226712
80024267112070270103800002128025160010160010800101631420492363126711267111662331668580010800201600202671139118002110910800101000502005226626704160000800102671226712267122671226712
8002426711207027061800002128025160010160010800101631421492363126711267111662331668580010800201600202671139118002110910800101000502003225526704160000800102671226712267122671226712