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

BIC (register, lsl, 64-bit)

Test 1: uops

Code:

  bic 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)031e3f4c4d51schedule 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)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
1004203515061100017352520002000100032570203520351575318421000100020002035421110011000733671117812000100020362036203620362036
10042035151261100017352520002000100032570203520351575318421000100020002035421110011000731671117812000100020362036203620362036
1004203515061100017352520002000100032570203520351575318421000100020002035421110011000731671117812000100020362036203620362036
1004203515061100017352520002000100032570203520351575318421000100020002035421110011000731671117812000100020362036203620362036
100420351519861100017352520002000100032570203520351575318421000100020002035421110011000731671117812000100020362036203620362036
1004203515061100017352520002000100032570203520351575318421000100020002035421110011000731671117812000100020362036203620362036
1004203515061100017352520002000100032570203520351575318421000100020002035421110011000731671117812000100020362036203620362036
1004203515061100017352520002000100032570203520351575318421000100020002035421110011000731671117812000100020362036203620362036
1004203515061100017352520002000100032570203520351575318421000100020002035421110011000731671117812000100020362036203620362036
10042035151261100017352520002000100032570203520351575318421000100020002035421110011000731671117812000100020362036203620362036

Test 2: Latency 1->2

Code:

  bic 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)03191e3f4c4d51schedule 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)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
102042003515000611000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100010710159211979120000101002003620036200362003620036
102042003515000611000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
102042008215000611000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
102042003515000611000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
102042003515000611000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
102042003515000611000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
1020420035149007261000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
102042003515000611000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
1020420035150003951000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
102042003515000611000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0035

retire uop (01)cycle (02)03mmu table walk instruction (07)18191e3f4c4d51schedule 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)a9acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
1002420035150000061100001974325200102001010010185298491695520035200351845131871810010100202002020035421110021109101001010000150640263221979220000100102003620036200362003620036
1002420035150000061100001974325200102001010010185310491695520035200351845331871810010100202002020035421110021109101001010000180640263221979220002100102003620036200362003620036
1002420035150000061100001974125200102001210012185298491695520035200351845131871810010100202002020035421110021109101001010000150640263221979220000100102003620036200362003620036
100242003515000006110000197412520012200121001018529849169552003520035184533187181001010020200202003544111002110910100101000000640263221979220000100102003620036200362003620036
1002420035150000061100001974325200102001010010185310491695520035200351845131871810010100202002020035421110021109101001010000150640263221979320000100102003620036200362003620036
100242003515000006110000197432520010200101001018531049169552003520035184513187181001010020200202003542111002110910100101000060640263221979220000100102003620036200362003620036
1002420035150000082100001974325200102001010010185310491695520035200351845131871810010100202002020035421110021109101001010000150640263221979220000100102003620036200362003620036
1002420035150100061100001974325200102001010010185310491695520035200351845331871810010100202002020035421110021109101001010000210640263221979220000100102003620036200362003620036
1002420035150000061100001974325200102001010010185310491695520035200351845131871810010100202002020035421110021109101001010000540640263221979220000100102003620036200362003620036
1002420035150000061100001974325200102001010012185310491695520035200351845131871810010100202002020035421110021109101001010000660640263221979220000100102003620036200362003620036

Test 3: Latency 1->3

Code:

  bic 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)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
102042003515000018710000198032520100201001010018534214916955020035200351842931870010100102002020020035421110201100991001010010000710159111979120000101002003620036200362003620036
10204200351500006110000198032520100201001010018534204916955020035200351842931870010100102002020020035421110201100991001010010000710159111979120000101002003620036200362003620036
10204200351490006110000198032520100201001027618534214916955020035200351842931870010100102002020020035421110201100991001010010000710159111979120000101002003620036200362003620036
10204200351501006110000198032520100201001010018534204916955020035200351842931870010100102002020020035421110201100991001010010000710159111979120000101002003620036200362003620036
10204200351500006110000198032520100201001010018534204916955020035200351842931870010100102002020020035421110201100991001010010000710159111979120000101002003620036200362003620036
10204200351500006110000198032520100201001010018534204916955020035200351842931870010100102002020020035421110201100991001010010000710159111979120000101002003620036200362003620036
10204200351500906110000198032520100201001010018698104916955020035200351842931870010100102002020020035421110201100991001010010000710159111985720000101002003620036200362003620036
10204200351500006110000198032520100201001010018534214916955020035200351842931870010100102002020020035421110201100991001010010010710159111979120000101002003620036200362003620036
10204200351500006110000198032520100201001010018534204916955020035200351842931870010100102002020020035421110201100991001010010000710159111979120000101002003620036200362003620036
10204200351500006110000198032520100201001010018534204916955020035200351842931870010100102002020020035421110201100991001010010000710159111979120000101002003620036200362003620036

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)acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
100242003515000611000019743252001020010100101853100491695520035200351845131871810010100202002020035421110021109101001010000400640263221979220000100102003620036200362003620036
100242003515000611000019743252001020010100101853100491695520035200351845131871810010100202002020035421110021109101001010000000640263221979220000100102003620036200362003620036
10024200351500061100001974325200102001010010185310049169552003520035184513187181001010020200202003542111002110910100101000020870640263221979220000100102003620036200362003620036
1002420035150006110000197432520010200101001018531004916955200352003518451318718100101002020020200354211100211091010010100004130640263221979220000100102003620036200362003620036
100242003515000821000019743252001020010100101853101491695520035200351845131871810010100202002020035421110021109101001010000002640263222003220000100102003620036200362003620036
100242003515000611000019750252001020010100101853100491695520035200351845131871810010100202002020035421110021109101001010000600640263221979220000100102003620036200362003620036
100242003515000611000019743252001020010100101853100491695520035200351845131871810010100202002020035421110021109101001010000100640263221979220000100102003620036200362003620036
100242003515000611000019743252001020010100101853100491695520035200351845131871810010100202002020035421110021109101001010000400640263221979220000100102003620036200362003620036
100242003515000611000019743252001020010100101853100491695520035200351845131871810010100202002020035421110021109101001010000430640263221979220000100102003620036200362003620036
100242003515000611000019743252001020010100101853100491695520035200351845131871810010100202002020035421110021109101001010000000640263221979220000100102003620036200362003620036

Test 4: throughput

Count: 8

Code:

  bic x0, x8, x9, lsl #17
  bic x1, x8, x9, lsl #17
  bic x2, x8, x9, lsl #17
  bic x3, x8, x9, lsl #17
  bic x4, x8, x9, lsl #17
  bic x5, x8, x9, lsl #17
  bic x6, x8, x9, lsl #17
  bic 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)03l2 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)9fld unit uop (a6)l1d cache writeback (a8)a9accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
8020426732201006180000260942516010016010080100164318149236452672526725166153166778010080200160200267253911802011009910080100100000051103222226717160000801002672626726267262672626726
80204267252000053680000260942516010016010080100164318149236452672526725166153166778010080200160200267253911802011009910080100100000051102222226717160000801002672626726267262672626726
8020426725200006180000260942516010016010080100164318149236452672526725166153166778010080200160200267253911802011009910080100100000051102222226717160000801002672626726267262672626726
8020426725200006180000260942516010016010080100164318149236452672526725166153166778010080200160200267253911802011009910080100100000051102222226717160000801002672626787267262678826726
8020426725200008480000260942516010016010080100164318149236452672526725166153166778010080200160200267253911802011009910080100100000051102222226717160000801002672626726267262672626726
8020426725201006180000260942516010016010080100164318049236452672526725166153166778010080200160200267253911802011009910080100100000051102222226717160000801002678526726267262672626726
8020426725200006180000260942516010016010080100164318149236452672526725166153166778010080200160200267253911802011009910080100100000051102222226717160000801002672626726267262672626726
8020426725200006180000260942516010016010080100164318149236452672526725166153166778010080200160200267253911802011009910080100100000051102222226717160000801002672626726267262672626726
8020426725200006180000260942516010016010080100164318149236452672526725166153166778010080200160200267253911802011009910080100100000051102222226717160000801002672626726267262672626726
8020426725200006180000260942516010016010080100164318149236452672526725166153166778010080200160200267253911802011009910080100100000051102222226717160000801002672626726267262672626726

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)0318191e3f4c4d51schedule uop (52)schedule int uop (53)dispatch int uop (56)int uops in schedulers (59)5f696a6d6emap 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)d9dbddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
80024267172000006680000212802516001016001080010163142049236312671126711166233166858001080020160020267113911800211091080010107905020122001126704160000800102671226712267122671226712
8002426711200002076180000212802516001016001080010163142049236312671126711166233166858001080020160020267113911800211091080010102005020122001126704160000800102671226712267122671226712
800242671120000061800002128025160010160010800101631421492363126711267111662331668580010800201600202671139118002110910800101021305020122001126704160000800102671226712267122671226712
800242671120000061800002128025160010160010800101631420492363126711267111662331668580010800201600202671139118002110910800101032305020122001126704160000800102671226712267122671226712
800242671120000061800002128025160010160010800101631421492363126711267111662331668580010800201600202671139118002110910800101021305020122001126704160000800102671226712267122671226712
800242671120000061800002128025160010160010800101631420492363126711267111662331668580010800201600202671139118002110910800101026288305020122001126704160000800102671226712267122671226712
800242671120010061800002128025160010160010800101631420492363126711267111662331668580010800201600202671139118002110910800101022005020122001126704160000800102671226712267122671226712
800242671120000061800002128025160010160010800101631420492363126711267111662331668580010800201600202671139118002110910800101025005020122001126704160000800102671226712267122671226712
800242671120000061800002128025160010160010800101631420492363126711267111662331668580010800201600202671139118002110910800101024305020122001126704160000800102671226712267122671226712
800242671120000061800002128025160010160010800101631420492363126711267111662331668580010800201600202671139118002110910800101027305020122001126704160000800102671226712267122671226712