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

EOR (register, lsr, 32-bit)

Test 1: uops

Code:

  eor 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)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)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
100420351506110001735252000200010003257012035203515753184210001000200020354211100110000731671117812000100020362036203620362036
100420351508210001735252000200010003257012035203515753184210001000200020354211100110000731671117812000100020362036203620362036
100420351506110001735252000200010003257002035203515753184210001000200020354211100110000731671117812000100020362036203620362036
100420351506110001735252000200010003257002035203515753184210001000200020354211100110000731671117812000100020362036203620362036
100420351506110001735252000200010003257002035203515753184210001000200020354211100110000731671117812000100020362036203620362036
100420351506110001735252000200010003257002035203515753184210001000200020354211100110000731671117812000100020362036203620362036
1004203516010310001735252000200010003257012035203515753186710001000200020814211100110000731671117812000100020362036203620362036
100420351606110001735252000200010003257002035203515753184210001000200020354211100110000731671117812000100020362036203620362036
100420351506110001735252000200010003257002035203515753184210001000200020354211100110000731671117812000100020362036203620362036
100420351506110001735252000200010003257012035203515753184210001000200020354211100110000941671117812000100020362036203620362036

Test 2: Latency 1->2

Code:

  eor 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)03mmu table walk data (08)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)acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
1020420035150002081000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100000710259111979120000101002003620036200362003620036
102042003515000611000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
1020420035150001241000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
1020420035149001451000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
1020420035150002561000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
102042003515000611000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100100710159111979120000101002003620036200362003620036
1020420035150001261000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
102042003515000611000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100100710159111979120000101002003620036200362003620036
102042003515000611000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036
1020420035150001031000019803252010020100101001853424916955200352003518429318700101001020020200200354211102011009910010100100000710159111979120000101002003620036200362003620036

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 tlb access (a0)l1d cache writeback (a8)branch mispred nonspec (cb)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
10024200351500611000019743252001020010100101853101491695520035200351845131871810010100202002020035421110021109101001010000640263221979220000100102003620036200362003620036
10024200351500611000019743252001020010100101853101491695520035200351845131871810010100202002020035421110021109101001010000640263221979220000100102003620036200362003620036
10024200351500611000019743252001020010100101853101491695520035200351845531871810010100202002020035421110021109101001010000640263221979220000100102003620036200362003620036
100242003515005361000019743252001020010100101853101491695520035200351845131871810010100202002020035421110021109101001010000640263221979220000100102003620036200362003620036
10024200351500611000019743252001020010100101853101491695520035200351845131871810010100202002020035421110021109101001010000640263221979220000100102003620036200362003620036
10024200351500611000019743252001020010100101853101491695520035200351845131871810010100202002020035421110021109101001010000640263221979220000100102003620036200362003620036
10024200351500611000019743252001020010100101853101491695520035200351845131871810010100202002020035421110021109101001010000640363221979220000100102003620036200362003620036
10024200351500611000019743252001020010100101853101491695520035200351845131871810010100202002020035421110021109101001010000640263221979220000100102003620036200362003620036
10024200351500611000019743252001020010100101853101491695520035200351845131871810010100202002020035421110021109101001010001640263221979220000100102003620036200362003620036
10024200351500611000019743252001020010100101853101491695520035200351845131871810010100202002020035421110021109101001010000640263221979220000100102003620036200362003620036

Test 3: Latency 1->3

Code:

  eor 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)09l2 tlb miss data (0b)18191e1f3f4c4d51schedule 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)a9acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
10204200351730000000103100001980325201002010010100185342149169552003520035184293187001010010200202002003542111020110099100101001000000000710159111979120000101002003620036200362003620036
1020420035173000000061100001980325201002010010100185342049169552003520035184293187001010010200202002003542111020110099100101001000000000710159111979120000101002003620036200362006720036
102042003517300000120103100001980325201002010010100185342049169552003520035184293187001010010200202002003542111020110099100101001000000000710159111979120000101002003620036200362003620036
1020420035173000000061100001980325201002010010100185342049169552003520035184293187001010010200202002003542111020110099100101001000000000710159111979120000101002003620036200362003620036
1020420035161000000061100001980325201002010010100185342049169552003520035184293187001010010200202002003542111020110099100101001000000000710159111979120000101002003620036200362003620036
10204200351610000000251100001980325201002010010100185342049169552003520035184293187001010010200202002003542111020110099100101001000000000710159111979120000101002003620036200362003620036
10204200351610000000107100001980325201002010010100185342049169552003520035184293187001010010200202002003542111020110099100101001000000000710159111979120000101002003620036200362003620036
1020420035161000000061100001980325201002010010100185342049169552003520035184293187001010010200202002003542111020110099100101001000000000710159111979120000101002003620036200362003620036
10204200351610000000124100001980325201002010010100185342049169552003520035184293187001010010200202002003542111020110099100101001000000000710159111979120000101002003620036200362003620036
1020420035155000000061100001980325201002010010100185342049169552003520035184293187001010010200202002003542111020110099100101001000000000710159111979120000101002003620036200362003620036

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)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
10024200351500006110000197432520010200101001018531004916955200352003518451318718100101002020020200354211100211091010010100000640263321979220000100102003620036200362003620036
100242003515000021810000197432520010200101001018531004916955200352003518453318718100121002020020200354211100211091010010100000640263221979220000100102003620036200362003620036
10024200351500006110000197432520010200101001018531004916955200352003518451318718100101002020020200354211100211091010010100000640263221979220000100102003620036200362003620036
10024200351500606110000197432520010200341001018531014916955200352003518451318718100101002020020200354211100211091010010100000640263221979220000100102003620036200362003620036
10024200351501006110000197434420010200101001018531004916955200352003518451318718100121002020020200354211100211091010010100000640263221979220000100102003620036200362003620036
10024200351500006110000197432520010200101001018531014916955200352003518451318718100101002020020200354211100211091010010100000640263221979220000100102003620036200362003620036
10024200351500006110000197432520010200101001018531014916955200352003518451318718100101002020020200354211100211091010010100000640263221979220000100102003620036200362003620036
10024200351500006110000197432520010200101001018531014916955200352003518451318718100101002020020200354211100211091010010100000640263221979220000100102003620036200362003620036
100242003515000059010000197432520010200101001018531014916955200352003518451318718100101002020020200354211100211091010010100000640263221979220000100102003620036200362003620036
10024200351500006110000197432520010200101001018531014916955200352003518451318718100101002020020200354211100211091010010100000640263221979220002100102003620036200362003620036

Test 4: throughput

Count: 8

Code:

  eor w0, w8, w9, lsr #17
  eor w1, w8, w9, lsr #17
  eor w2, w8, w9, lsr #17
  eor w3, w8, w9, lsr #17
  eor w4, w8, w9, lsr #17
  eor w5, w8, w9, lsr #17
  eor w6, w8, w9, lsr #17
  eor 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)03l2 tlb miss data (0b)1e1f3f4c4d51schedule 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 tlb miss (a1)l1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)ea? int retires (ef)f5f6f7f8fd
802042676920000061800002609425160100160100801001643180492364526725267251661531667780100802001602002672539118020110099100801001000000511022211267171600002801002672626726267262672626726
802042672520000061800002609425160100160100801001643180492364526725267251661531667780100802001602002672539118020110099100801001000000511012211267171600000801002672626726267262672626726
802042672520000061800002609425160100160100801001643180492364526725267251661531667780100802001602002672539118020110099100801001000000511012212267171600000801002672626726267262672626726
8020426725200000124800002609425160100160100801001643180492364526725267251661531667780100802001602002672539118020110099100801001000000511012211267171600000801002672626726267262672626726
802042672520000061800002609425160100160100801001643180492364526725267251661531667780100802001602002672539118020110099100801001000000511012211267171600000801002672626726267262672626726
802042672520000061800002609425160100160100801001643180492364526725267251661531667780100802001602002672539118020110099100801001000000511012211267171600000801002672626726267262672626726
802042672520000061800002609425160100160100801001643180492364526725267251661531667780100802001602002672539118020110099100801001000000511012211267171600000801002672626726267262672626726
802042672520000061800002609425160100160100801001643180492364526725267251661531667780100802001602002672539118020110099100801001000000511012211267171600000801002672626726267262672626726
802042672520000017080000260942516010016010080100164318049236452672526725166153166778010080200160200267253911802011009910080100100000786511012211267171600000801002672626726267262672626726
802042672520000061800002609425160100160100801001643180492364526725267251661531667780100802001602002672539118020110099100801001000000511012211267171600000801002672626726267262672626726

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)03l2 tlb miss instruction (0a)181e3f4c4d51schedule 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)accfd5map dispatch bubble (d6)dbddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
8002426734200100618000021280251600101600108001016314214923631267112671116623316685800108002016002026711391180021109108001010000502042203526704160000800102671226712267122671226712
8002426711200000618000021280251600101600108001016314214923631267112671116623316685800108002016002026711391180021109108001010000502052205526704160000800102671226712267122671226712
8002426711200000618000021280251600101600108001016314214923631267112671116623316685800108002016002026711391180021109108001010000502062205326704160000800102671226712267122671226712
8002426711200000618000021280251600101600108001016314214923631267112671116623316685800108002016002026711391180021109108001010000502032205426704160000800102671226712267122671226712
8002426711200000618000021280251600101600108001016512314923631267112671116623316685800108002016002026711391180021109108001010000502052205326704160000800102671226712267122671226712
8002426711200000618000021280251600101600108001016314214923631267112671116623316685800108002016002026711391180021109108001010000502052203526704160000800102671226712267122671226712
8002426711200000618000021280251600101600108001016314214923631267112671116623316685800108002016002026711391180021109108001010000502032205326704160000800102671226712267122671226712
8002426711200000618000021280251600101600108001016314214923631267112671116623316685800108002016002026711391180021109108001010000502032203526704160000800102671226712267122671226712
8002426711200000618000021280251600101600108001016314214923631267722671116623316685800108002016002026711391180021109108001010000502032203626704160000800102671226712267122671226712
8002426711200000618000021280251600101600108001016314214923631267112671116623316685800108002016002026711391180021109108001010000502052203526704160000800102671226712267122671226712