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, lsr, 32-bit)

Test 1: uops

Code:

  bic w0, w0, w1, lsr #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)031e1f3f4c4d51schedule 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
10042035150061100017352520002000100032570020352035157531842100010002000203542111001100000731671117812000100020362036203620362036
10042035150061100017352520002000100032570020352035157531842100010002000203542111001100003731671117812000100020362036203620362036
10042035150061100017352520002000100032570020352035157531842100010002000203542111001100010731671117812000100020362036203620362036
100420351527061100017352520002000100032570020352035157531842100010002000203542111001100000731671117812000100020362036203620362036
10042035150061100017352520002000100032570020352035157531842100010002000203542111001100000731671117812000100020362036203620362036
10042035150061100017352520002000100032570020352035157531842100010002000203542111001100000731671117812000100020362036203620362036
10042035150061100017352520002000100032570020352035157531842100010002000203542111001100000731671117812000100020362036203620362036
10042035160061100017352520002000100032570020352035157531842100010002000203542111001100000731671117812000100020362036203620362036
10042035150061100017352520002000100032570020352035157531842100010002000203542111001100000731671117812000100020362036203620362036
10042035150064100017352520002000100032570020352035157531842100010002000203542111001100000731671117812000100020362036203620362036

Test 2: Latency 1->2

Code:

  bic w0, w0, w1, lsr #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)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)9fcfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
102042003515015611000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100710159111979120000101002003620036200362003620036
10204200351500611000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100710159111979120000101002003620036200362003620036
10204200351500611000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100710159111979120000101002003620036200362003620036
10204200351500611000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100710159111979120000101002003620036200362003620036
10204200351500611000019803252012620100101001853424916955200352003518429318700101001020020200200354211102011009910010100100710159111979120000101002003620036200362003620036
10204200351500611000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100710159111979120000101002003620036200362003620036
10204200351500611000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100710159111979120000101002003620036200362003620036
10204200351500611000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100710159111979120000101002003620036200362003620036
102042003515001701000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100710159111979120000101002003620036200362003620036
10204200351500611000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100710159111979120000101002003620036200362003620036

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0035

retire uop (01)cycle (02)03mmu table walk data (08)1e1f3f4c4d51schedule uop (52)schedule int uop (53)dispatch int uop (56)int uops in schedulers (59)6061696a6d6emap 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)accfd0d2d5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
1002420035150000611000019743252001020010100101853100049169552003520035184513187181001010020200202003542111002110910100101002464000263221979220000100102003620036200362003620036
100242003515000061100001974325200102001010010185310004916955200352003518451318718100101002020020200354211100211091010010103064000263221979220000100102003620036200362003620036
1002420035150000611000019743252001020010100101853100049169552003520035184513187181001010020200202003542111002110910100101030364000263221979220000100102003620036200362003620036
100242003515000061100001974325200102001010010185310004916955200352003518451318718100101002020020200354211100211091010010100064000271221979220000100102003620036200362003620036
1002420035150000611000019743252001020010100101853100049169552003520035184513187181001010020200202003542111002110910100101027664000263221979220000100102003620036200362003620036
100242003515000061100001974325200102001010010185310004916955200352003518451318718100101002020020200354211100211091010010100064000263221979220000100102003620036200362003620036
1002420035150000611000019743252001020010100101853100049169552003520035184513187181001010020200202003542111002110910100101036064000263221979220000100102003620036200362003620036
100242003515000061100001974325200102001010010185310004916955200352003518451318718100101002020020200354211100211091010010103413864000263221979220000100102003620036200362003620036
100242003515000061100001974325200102001010010185310004916955200352003518451318718100101002020020200354211100211091010010100064000263221979220000100102003620036200362003620036
100242003515000061100001974325200102001010010185310104916955200352003518451318718100101002020020200354211100211091010010101064000263221979220000100102003620036200362003620036

Test 3: Latency 1->3

Code:

  bic w0, w1, w0, lsr #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)3f4c4d51schedule 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
102042003515006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
1020420035149072610000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
102042003514906110000198032520100201001010018534214916955200352003518429318747101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
102042003515006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
1020420035150061100001980325201002010010100185342149169552003520035184293187001010010200202002003542111020110099100101001000027710159111979120000101002003620036200362003620036
102042003515006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
102042003515006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
102052003515006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
102042003515006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
102042003515006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036

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 cache writeback (a8)a9accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
10024200351500611000019743252001020010100101853101491695520035200351845131871810010100202002020035421110021109101001010000640363331979220000100102003620036200362003620036
10024200351500611000019743252001020010100101853101491695520035200351845131871810010100202002020035421110021109101001010000640363331979220000100102003620036200362003620036
10024200351500611000019743252001020010100101853101491695520035200351845131871810010100202002020035421110021109101001010107888640363331979220000100102003620036200362003620036
10024200351500611000019743252001020010100101853101491695520035200351845131871810010100202002020035421110021109101001010000640363331979220000100102003620036200362008220036
1002420035150061100001974325200102001010010185310149169552003520035184513187181001010020200202003542111002110910100101041081640363331979220000100102003620036200362003620036
10024200351500611000019743252001020010100101853101491695520035200351845131871810010100202002020035421110021109101001010103640363331979220000100102003620036200362003620036
10024200351500611000019743252001020010100101853101491695520035200351845131871810010100202002020035421110021109101001010100640363331979220000100102003620036200362003620036
1002420035150061100001974325200102001010010185310149169552003520035184513187181001010020200202003542111002110910100101022012640363331979220000100102003620036200362003620036
10024200351500611000019743252001020010100101853101491695520035200351845131871810010100202002020035421110021109101001010000640363331979220000100102003620036200362003620036
10024200351500611000019743252001020010100101853101491695520035200351845131871810010100202002020035421110021109101001010103640363331979220000100102003620036200362003620036

Test 4: throughput

Count: 8

Code:

  bic w0, w8, w9, lsr #17
  bic w1, w8, w9, lsr #17
  bic w2, w8, w9, lsr #17
  bic w3, w8, w9, lsr #17
  bic w4, w8, w9, lsr #17
  bic w5, w8, w9, lsr #17
  bic w6, w8, w9, lsr #17
  bic w7, w8, w9, lsr #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)031e1f3f4c4d51schedule 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)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
80204267682010061800002609425160100160100801001643180492364526725267251661531667780100802001602002672539118020110099100801001000051103221126717160000801002672626726267262672626726
80204267252000061800002604125160100160100801001643181492364526725267251661531667780100802001602002672539118020110099100801001000051101222126717160000801002672626726267262672626726
802042672520012061800002609425160100160100801001643180492364526725267251661531667780100802001602002672539118020110099100801001001051101221126717160000801002672626726267262672626726
8020426725200228061800002609425160100160100801001643180492364526725267251661531667780100802001602002672539118020110099100801001000051101221126717160000801002672626726267262672626726
80204267252000061800002609425160100160100801001643181492364526725267251661531667780100802001602002672539118020110099100801001000051101221126717160000801002672626726267262672626726
8020426725200528061800002609425160100160100801001643180492364526725267251661531667780100802001602002672539118020110099100801001000051101222126717160000801002672626726267262672626726
80204267252000061800002609425160100160100801001643181492364526725267251661531667780100802001602002672539118020110099100801001000051101221226717160000801002672626726267262672626726
80204267252000061800002609425160372160100801001643180492364526725267251661531667780100802001602002672539118020210099100801001000051101221126717160000801002672626726267262672626726
80204267252000061800002609425160100160100801001643180492364526725267251661531667780100802001602002672539118020110099100801001000051101221126717160000801002672626726267262672626726
80204267252000061800002609425160100160100801001643180492364526725267251661531667780323802001602002672539118020110099100801001000051101221126717160000801002672626726267262672626726

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)033f4c4d51schedule uop (52)schedule int uop (53)dispatch int uop (56)int uops in schedulers (59)5f60696a6d6emap 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)dbddfetch restart (de)e0? int output thing (e9)eb? int retires (ef)f5f6f7f8fd
800242673520161800002128025160010160010800101631420049236312671126711166233166858001080020160020267113911800211091080010101005020722048267041600000800102671226712267122671226712
800242671120061800002128025160010160010800101631420049236312671126711166233166858001080020160020267113911800211091080010102005020922089267041600000800102671226712267122671226712
800242671120061800002128025160010160010800101631420049236312671126711166233166858001080020160020267113911800211091080010101005020422059267041600000800102671226712267122671226712
80024267111996180000212802516001016001080010163142004923631267112671116623316685800108002016002026711391180021109108001010149650205220510267041600000800102671226712267122671226712
800242671120061800002128025160010160010800101631420049236312671126711166233166858001080020160020267113911800211091080010101005020922094267041600000800102671226712267122671226712
8002426711200618000021280251600101600108001016314200492363126711267111662331668580010800201600202671139218002110910800101000050209220124267041600000800102671226712267122671226712
80024267112006180000212802516001016001080010163142004923631267112671116623316685800108002016002026711391180021109108001010470050208220139267041600000800102671226712267122671226712
80024267112006180000212802516001016001080010163142004923631267112671116623316685800108002016002026711391180021109108001010100502010220123267041600000800102671226712267122671226712
80024267112006180000212802516001016001080010163142004923631267112671116623316685800108002016002026711391180021109108001010190050209220513267041600000800102671226712267122671226712
800242671120061800002128025160010160010800101631420049236312671126711166233166858001080020160020267113911800211091080010101005020422048267041600000800102671226712267122671226712