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, 64-bit)

Test 1: uops

Code:

  bic x0, x0, x1, 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)0318191e3f4c4d51schedule 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)l1d cache writeback (a8)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
1004203515000611000173525200020001000325702035203515753184210001000200020354211100110000732672217812000100020362036203620362036
1004203515000611000173525200020001000325702035203515753184210001000200020354211100110000732672217812000100020362036203620362036
1004203515000611000173525200020001000325702035203515753184210001000200020354211100110000732672217812000100020362036203620362036
1004203515000821000173525200020001000325702035203515753184210001000200020354211100110000732672217812000100020362036203620362036
1004203515000611000173525200020001000325702035203515753184210001000200020354211100110000732672217812000100020362036203620362036
1004203515100611000173525200020001000325702035203515753184210001000200020354211100110000732672217812000100020362036203620362036
1004203516000611000173525200020001000325702035203515753184210001000200020354211100110000732672217812000100020362036203620362036
1004203515000611000173525200020001000325702035203515753184210001000200020354211100110000732672217812000100020362036203620362036
1004203515000611000173525200020001000325702035203515753184210001000200020354211100110000732672217812000100020362036203620362036
1004203515000611000173525200020001000325702035203515753184210001000200020354211100110000732672217812000100020362036203620362036

Test 2: Latency 1->2

Code:

  bic x0, x0, x1, 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)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 tlb miss (a1)st unit uop (a7)l1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
102042003515012061100001980325201002010010100185342149169552003520035184293187001010010200202002003542111020110099100101001000000710159111979120000101002003620036200362003620036
10204200351500061100001980325201002010010100185342149169552003520035184293187001010010200202002003542111020110099100101001000000710159111979120000101002003620036200362003620036
102042003515000103100001980325201002010010100185342149169552003520035184293187001010010200202002003542111020110099100101001000000710159111979120000101002003620036200362003620036
102042003515030061100001980325201002010010100185342149169552003520035184293187001010010200202002003542111020110099100101001000000710159111979120000101002003620036200362003620036
102042003515018061100001980325201002010010100185342149169552003520035184293187001010010200202002003542111020110099100101001000000710159111979120000101002003620036200362003620036
10204200351500061100001980325201002010010100185342149169552003520035184293187001010010200202002003542111020110099100101001000000710159111979120000101002003620036200362003620036
10204200351500061100001980325201002010010100185342149169552003520035184293187001010010200202002003542111020110099100101001000000710159111979120000101002003620036200362003620036
102042003515012061100001980325201002010010100185342149169552003520035184293187001010010200202002003542111020110099100101001000100710159111979120000101002003620036200362003620036
10204200351500061100001980325201002010010100185342149169552003520035184293187001010010200202002003542111020110099100101001000000710159111979120000101002003620036200362003620036
102042003515018061100001980325201002010010100185342149169552003520035184293187001010010200202002003542111020110099100101001000000710159111979120000101002003620036200362003620036

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)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)acc2cfd0d2d5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
10024200351503611000019743252001020010100101853101049169552003520035184513187181001010020200202003542111002110910100101000064052263221979220000100102003620036200362003620036
10024200351500611000019743252001020010100101853101549169552003520035184513187181001010020200202003542111002110910100101003064054263221979220000100102003620036200362003620036
100242003515001031000019743252001020010100101853101549169552003520035184513187181001010020200202003542111002110910100101000064054263221979220000100102003620036200362003620036
100242003515002101000019743252001020010100101853101549169552003520035184513187181001010020200202003542111002110910100101010064054263221979220000100102003620036200362003620036
10024200351500821000019743252001020010100101853101549169552003520035184513187181001010020200202003542111002110910100101000064054263221979220000100102003620036200362003620036
100242003515002541000019743252001020010100101853101549169552003520035184513187181001010020200202003542111002110910100101000064054263221979220000100102003620036200362003620036
10024200351500821000019743252001020010100101853101549169552003520035184513187181001010020200202003542111002110910100101000064054263221979220000100102003620036200362003620036
10024200351500821000019743252001020010100101853101549169552003520035184513187181001010020200202003542111002110910100101000064054263221979220000100102003620036200362003620036
100242003515006621000019743252001020010100101853101549169552003520035184513187581001010020200202003542111002110910100101000064054263221979220000100102003620036200362003620036
10024200351500821000019743252001020010100101853101549169552003520035184513187181001010020200202003542111002110910100101043064054263221979220000100102003620036200362003620036

Test 3: Latency 1->3

Code:

  bic x0, x1, x0, 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)0918191e1f3f4c4d51schedule 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)l1d cache writeback (a8)acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
102042003515000004506110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000000710259221979120000101002003620036200362003620036
10204200351500000606110000198032520100201001010018534204916955200352003518429318700101001020020200200354211102011009910010100100000000710259221979120000101002003620036200362003620036
1020420035150000012061100001980325201002010010100185342149169552003520035184293187001010010200202002003542111020110099100101001000001140140710259221979120000101002003620036200362003620036
10204200351500000006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000000710259221979120000101002003620036200362003620036
10204200351500000006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000000710259221979120000101002003620036200362003620036
10204200351500000006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000000710259221979120000101002003620036200362003620036
102042003515000002106110000198032520126201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000000710259221979120000101002003620036200362003620036
10204200351490000006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000000710259221979120000101002003620036200362003620036
10204200351500000006110000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000000710259221979120000101002003620036200362003620036
102042003515000000053610000198032520100201001010018534214916955200352003518429318700101001020020200200354211102011009910010100100000000710259221979120000101002003620036200362003620036

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0035

retire uop (01)cycle (02)03191f3f4c4d51schedule 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)9fld unit uop (a6)st unit uop (a7)l1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
100242003515000419100001974325200102001010010185310149169552003520035184510318718100101002020020200354211100211091010010100100640463221979220000100102003620036200362003620036
10024200351500061100001974325200102001010010185310149169552003520035184510318718100101002020020200354211100211091010010100000640263221979220000100102003620036200362003620036
100242003515000172100001974325200102001010010185310149169552003520035184510318718100101002020020200354211100211091010010100010640263221979220000100102003620036200362003620036
100242003515000105100001974325200102001010010185310149169552003520035184510318718100101002020020200354211100211091010010100003640263221979220000100102003620036200362003620036
100242003515000437100001974325200102001010010185310149169552003520035184510318718100101002020020200354211100211091010010100000640263221979220000100102003620036200362003620036
10024200351500061100001974325200102001010010185310149169552003520035184510318718100101002020020200354211100211091010010100000640263221979220000100102003620036200362003620036
10024200351500084100001974325200102001010010185310149169552003520035184510318718100101002020020200354211100211091010010100000640263221979220000100102003620036200362003620036
100242003515000574100001974325200102001010010185310149169552003520035184510318718100101002020020200354211100211091010010100000640263221979220000100102003620036200362003620036
100242003515000726100001974325200102001010010185310149169552003520035184510318718100101002020020200354211100211091010010100000640263221979220000100102003620036200362003620036
100242003515000298100001974325200102001010010185310149169552003520035184510318718100101002020020200354211100211091010010100000640263221979220000100102003620036200362003620036

Test 4: throughput

Count: 8

Code:

  bic x0, x8, x9, lsr #17
  bic x1, x8, x9, lsr #17
  bic x2, x8, x9, lsr #17
  bic x3, x8, x9, lsr #17
  bic x4, x8, x9, lsr #17
  bic x5, x8, x9, lsr #17
  bic x6, x8, x9, lsr #17
  bic x7, x8, x9, 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)0309l2 tlb miss data (0b)181e1f3f4c4d51schedule 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
80204267682010006061800002609425160100160100801001643180492364526725267251661531667780100802001602002672539118020110099100801001000051102221126769160000801002672626726267262672626726
802042672520000042061800002609425160100160100801001643181492364526725267251661531667780100802001602002672539118020110099100801001000051101221126717160000801002672626726267262672626726
802042672520000024061800002609425160100160100801001643180492364526725267251661531667780100802001602002672539118020110099100801001000051101221126717160000801002672626726267262672626726
80204267252000000061800002609425160100160100801001643180492364526725267251661531667780100802001602002672539118020110099100801001000051101221126717160000801002672626726267262672626726
80204267252010009061800002609425160100160100801001643180492364526725267251661531667780100802001602002672539118020110099100801001000051101221126717160000801002672626726267262672626726
80204267252000000061800002609425160100160100801001643180492364526725267251661531667780100802001602002672539118020110099100801001000051101221126717160000801002672626726267262672626726
802042672520000024061800002609425160100160100801001643181492364526725267251661531667780100802001602002672539118020110099100801001000051101221126717160000801002672626726267262672626726
80204267252000000061800002609425160100160100801001643180492364526725267251661531667780100802001602002672539118020110099100801001000051101221126717160000801002672626726267262672626726
80204267252000000061800002609425160100160100801001643180492364526725267251661531667780100802001602002672539118020110099100801001000051101221126717160000801002672626726267262672626726
802042672520000012061800002609425160100160100801001643180492364526725267251661531667780100802001602002678839118020110099100801001000051101221126717160000801002672626726267262672626726

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)03181e3f4c4d51schedule uop (52)schedule int uop (53)dispatch int uop (56)int uops in schedulers (59)6067696a6d6emap 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)9facbranch cond mispred nonspec (c5)cfd0d2d5map dispatch bubble (d6)dbddfetch restart (de)e0? int output thing (e9)eaeb? int retires (ef)f5f6f7f8fd
800242673520100208280000212802516001016001080010163142004923631267112671116623316685800108002016002026711391180021109108001010305020001220112670416000000800102671226712267122671226712
8002426711200006180000212802516001016001080010163142004923631267112671116623316685800108002016002026711391180021109108001010005024001220112670416000000800102671226712267122671226712
80024267112000063180000212802516001016001080010163142004923631267112671116623316685800108002016002026711391180021109108001010005020001220112670416000000800102671226712267122671226712
80024267112000014580000212802516001016001080010163142004923631267112671116623316685800108002016002026711391180021109108001010005020001220112670416000000800102671226712267122671226712
8002426711200006180000212802516001016001080010163142004923631267112671116623316685800108002016002026711391180021109108001010005020001220112670416000000800102671226712267122671226712
8002426711200006180000212802516001016001080010163142004923631267112671116623316685803748002016002026711391180021109108001010005020001220112670416000000800102671226712267122671226712
80024267112000061800002128025160010160010800101631420049236312671126711166233166858001080020160020267113911800211091080010100050200012201126704160000150800102671226712267122671226712
80024267112000016880000212802516001016001080010163142004923631267112671116623316685800108002016002026711391180021109108001010005020001220112670416000000800102671226712267122671226712
8002426711200006180000212802516001016001080010163142004923631267112671116623316685800108002016002026711391180021109108001010005020001220112670416000000800102671226712267122671226712
80024267112000012480000212802516001016001080010163142004923631267112671116623316685800108002016002026711391180021109108001010005020001220112670416000000800102671226712267122671226712