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

AND (register, lsl, 32-bit)

Test 1: uops

Code:

  and 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)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 tlb miss (a1)l1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
10042035190611000173525200020001000325700203520351575318421000100020002035421110011000010731671117812000100020362036203620362036
10042035580611000173525200020001000325700203520351575318421000100020002035421110011000010731671117812000100020362036203620362036
10042035580611000173525200020001000325700203520351575318421000100020002035421110011000000731671117812000100020362036203620362036
10042035190611000173525200020001000325700203520351575318421000100020002035421110011000000731671117812000100020362036203620362036
10042035180611000173525200020001000325700203520351575318421000100020002035421110011000000731671117812000100020362036203620362036
10042035190611000173525200020001000325700203520351575318421000100020002035421110011000000731671117812000100020362036203620362036
10042035190611000173525200020001000325700203520351575318421000100020002035421110011000000731671117812000100020362036203620362036
10042035180611000173525200020001000325700203520351575318421000100020002035421110011000000731671117812000100020362036203620362036
10042035170611000173525200020001000325700203520351575318421000100020002035421110011000000731671117812000100020362036203620362036
10042035180611000173525200020001000325700203520351575318421000100020002035421110011000000731671117812000100020362036203620362036

Test 2: Latency 1->2

Code:

  and 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)9faccfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
1020420035150061100001980325201002010010100185342149169552003520035184293187001010010200202002003542111020110099100101001000710159111979120000101002003620036200362003620036
10204200351500181100001980325201002010010100185342149169552003520035184293187001010010200202002003542111020110099100101001000710159111979120000101002003620036200362003620036
1020420035150061100001980325201002010010100185342149169552003520035184293187001010010200202002003542111020110099100101001000710159111979120000101002003620036200362003620036
1020420035150061100001980325201002010010100185342149169552003520035184293187001010010200202002003542111020110099100101001000710159111979120000101002003620036200362003620036
1020420035150061100001980325201002010010100185342149169552003520035184293187001010010200202002003542111020110099100101001000710159111979120000101002003620036200362003620036
1020420035150061100001980325201002010010100185342149169552003520035184293187001010010200202002003542111020110099100101001000710159111979120000101002003620036200362003620036
1020420035150061100001980325201002010010100185342149169552003520035184293187451010010200202002003542111020110099100101001000710159111979120000101002003620036200362003620036
1020420035150061100001980325201002010010100185342149169552003520035184293187001010010200202002003542111020110099100101001000710159111979120000101002003620036200362003620036
1020420035150061100001980325201002010010100185342149169552003520035184293187001010010200202002003542511020110099100101001000710159111979120000101002003620036200362003620036
1020420035150061100001980325201002010010100185342149169552003520035184293187001010010200202002003542111020110099100101001000710159111979120000101002003620036200362003620036

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0035

retire uop (01)cycle (02)03l2 tlb miss data (0b)181e3f4c4d51schedule 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
100242003515000061100001974325200102001010010185310491695520035200351845131871810010100202002020035421110021109101001010000640263221979220000100102003620036200362003620036
100242003515000061100001974325200102001010010185310491695520035200351845131871810010100202002020035421110021109101001010000640263221979220000100102003620036200362003620036
100242003514900061100001974325200102001010010185310491695520035200351845131871810010100202002020035421110021109101001010000640263221979220000100102003620036200362003620036
100242003515000061100001974325200102001010010185310491695520035200351845131871810010100202002020035421110021109101001010000640263221979220000100102003620036200362003620036
100242003515000061100001974325200102001010010185310491695520035200351845131871810010100202002020035421110021109101001010000640263221979220000100102003620036200362003620036
10024200351500017161100001974325200102001010010185310491695520035200351845131871810010100202002020035421110021109101001010060640263221979220000100102003620036200362003620036
100242003515000061100001974325200102001010010185310491695520035200351845131871810010100202002020035421110021109101001010000640263221979220000100102003620036200362003620036
100242003515000061100001974325200102001010010185310491695520035200351845131871810010100202002020035421110021109101001010000640263221979220000100102003620036200362003620036
100242003515000061100001974325200102001010010185310491695520035200351845131871810010100202002020035421110021109101001010000640263221979220000100102003620036200362003620036
100242003515000061100001974325200102001010010185310491695520035200351845131871810010100202002020035421110021109101001010000640263221979220000100102003620036200362003620036

Test 3: Latency 1->3

Code:

  and 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)031e3f4c4d51schedule uop (52)schedule int uop (53)dispatch int uop (56)int uops in schedulers (59)696a6b6d6emap 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
102042003515006110000198032520100201001010018534249169550200352003518429318700101001020020536200354211102011009910010100100000710159111979120000101002003620036200362003620036
102042008115006110000198032520100201001010018534249169550200352003518429318734101001020020200200354211102011009910010100100000710159111985020000101002003620036200362003620036
102042003515006110000198032520100201001010018534249169550200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362007920036
1020420035150034610000198032520100201001010018534249169550200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
102042003515006110000198032520100201001010018534249169550200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
102042003515006110000198032520100201001010018534249169550200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
102042003515006110000198032520100201001010018534249169550200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
102042003515068210000198032520100201001010018534249169550200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
102042003515006110000198032520100201001010018534249169550200352003518429318700101001020020200200354211102011009910010100100000710159111989120000101002003620036200362003620036
102042003515006110000198032520100201001010018534249169550200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0035

retire uop (01)cycle (02)03181e3f4c4d51schedule 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)9fl1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
1002420035150007261000019743252001020010100101853100491695520035200351845173187181001010020200202003542111002110910100101000640263221979220000100102003620036200362003620036
100242003515000611000019743252001020010100101853100491695520035200351845103187181030010020200202003542111002110910100101023640263221979220000100102003620036200362003620036
100242003515000611000019743252001020010100101853100491695520035200351845103187181001010020200202003542111002110910100101000640263221979220000100102003620036200362003620036
100242003515000611000019743252001020010100101853100491695520035200351845103187181001010020200202003542111002110910100101000640263221979220000100102003620036200362003620036
100242003515000611000019743252001020010100101853100491695520035200351845103187181001010020200202003542111002110910100101000640263221979220000100102003620036200362003620036
1002420035150007261000019743252001020010100101853100491695520035200351845103187181001010020200202003542111002110910100101000640263221979220000100102003620036200362003620036
100242003515000611000019743252001020010100101853100491695520035200351845103187181001010020210362003542111002110910100101000640263221979220000100102003620036200362003620036
100242003515000611000019743252001020010100101853100491695520035200351845103187181001010020200202003542111002110910100101000640263221979220000100102003620036200362003620036
100242003515000611000019743252001020010100101853100491695520035200351845103187181001010020200202003542111002110910100101000640263221979220000100102003620036200362003620036
100242003515000611000019743252001020010100101853100491695520035200351845103187181001010020200202003542111002110910100101000640263221979220000100102003620036200362003620036

Test 4: throughput

Count: 8

Code:

  and w0, w8, w9, lsl #17
  and w1, w8, w9, lsl #17
  and w2, w8, w9, lsl #17
  and w3, w8, w9, lsl #17
  and w4, w8, w9, lsl #17
  and w5, w8, w9, lsl #17
  and w6, w8, w9, lsl #17
  and 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)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)acbranch cond mispred nonspec (c5)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
802042673220118618000026094251601001601008010016431814923645267252672516615316677801008020016020026725391180201100991008010010000051102221126717160000801002672626726267262672626726
802042672520024618000026094251601001603798010016431814923645267252672516615316677801008020016020026725391180201100991008010010000051101221126717160000801002672626726267262672626726
8020426725200264618000026094251601001601008010016431814923645267252672516615316697801008020016020026725391180201100991008010010000051101221126717160000801002672626726267262672626726
8020426725200315618000026094251601001601008010016431814923645267252672516615316677801008020016020026725391180201100991008010010003051101221126717160000801002672626726267262672626726
802042672520018618000026094251601001601008010016431814923645267252672516615316677801008020016020026725391180201100991008010010000051101221126717160000801002672626726267262672626726
802042672520030618000026094251601001601008010016431814923645267252672516615316677801008020016020026725391180201100991008010010000051101221126717160000801002672626726267262672626726
802042672520018618000026094251601001601008010016431814923645267252672516615316677801008020016020026725391180201100991008010010000051101221126717160000801002672626726267262672626726
8020426725200267618000026094251601001601008010016431814923645267252672516615316677801008020016020026725391180201100991008010010000051101221126717160000801002672626726267262672626726
8020426725200450618000026094251601001601008010016431814923645267252672516615316677801008020016020026725391180201100991008010010000051101221126717160000801002672626726267262672626726
80204267252000618000026094251601001601008010016431814923645267252672516615316677801008020016020026725391180201100991008010010000051101221126717160000801002672626726267262672626726

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)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)9fl1d tlb access (a0)l1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
8002426734200003361800002128025160010160010800101631420492363126711267111662331668580010800201600202671139118002110910800101000050203221126704160000800102671226712267122671226712
8002426711200001861800002128025160010160010800101631421492363126711267111662331668580010800201600202671139118002110910800101000050201221126704160000800102671226712267122671226712
80024267112000021536800002128025160010160010800101631421492363126711267111662331668580010800201600202671139118002110910800101000050201221126704160000800102671226712267122671226712
800242671120000333468000021280251600101600108001016314214923631267112671116623121668580010800201600202671139118002110910800101000050201221126704160000800102671226712267122671226712
8002426711200001861800002128025160010160010800101631420492363126711267111662331668580010800201600202671139118002110910800101000050201221126704160000800102671226712267122671226712
80024267112000010861800002128025160010160010800101631420492363126711267111662331668580010800201600202671139118002110910800101000050201221126704160000800102671226712267122671226712
8002426711200002461800002128025160010160010800101631421492363126711267111662331668580010800201600202671139118002110910800101000050201221126704160000800102671226712267122671226712
8002426711200001261800002128025160010160010800101631420492363126711267111662331668580010800201600202671139118002110910800101000050201221126704160000800102671226712267122671226712
8002426711200006061800002128025160010160010800101631421492363126711267111662331668580010800201600202671139118002110910800101000050201221126704160000800102671226712267122671226712
8002426711200001861800002128025160010160010800101631421492363126711267111662331668580010800201600202671139118002110910800101000050201221126704160000800102671226712267122671226712