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

CSINC (32-bit)

Test 1: uops

Code:

  csinc w0, w0, w1, hi
  mov x0, 1
  mov x1, 2

(no loop instructions)

1000 unrolls and 1 iteration

Retires: 1.000

Issues: 1.000

Integer unit issues: 1.000

Load/store unit issues: 0.000

SIMD/FP unit issues: 0.000

retire uop (01)cycle (02)03l2 tlb miss data (0b)181e3f4d51schedule 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)9fl1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
10041035800061917251000100010006225001035103580538821000100030001035104111001100010000073127119901000100010361036103610361036
10041035701061917251000100010006225001035103580538821000100030001035104111001100010000073127119901000100010361036103610361036
10041035700061917251000100010006225001035103580538821000100030001035104111001100010000073127119901000100010361036103610361036
10041035700061917251000100010006225001035103580538821000100030001035104111001100010000073127119901000100010361036103610361036
10041035800061917251000100010006225011035103580538821000100030001035104111001100010000073127119901000100010361036103610361036
10041035800061917251000100010006225001035103580538821000100030001035104111001100010000073127119901000100010361036103610361036
10041035700061917251000100010006225001035103580538821000100030001035104111001100010000073127119901000100010361036103610361036
10041035700061917251000100010006225001035103580538821000100030001035104111001100010000073127119901000100010361036103610361036
10041035800061917251000100010006225001035103580538821000100030001035104111001100010000073127119901000100010361036103610361036
10041035800061917251000100010006225001035103580538821000100030001035104111001100010000073127119901000100010361036103610361036

Test 2: Latency 1->2

Code:

  csinc w0, w0, w1, hi
  mov x0, 1
  mov x1, 2

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code): 1.0035

retire uop (01)cycle (02)031e1f3f4d51schedule 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
1020410035750061992025101001010010100647152049695510035100358656387321010010200302001003510211102011009910010100101000071012711999210000101001003610036100361003610036
1020410035750061992025101001010010100647152049695510035100358656387321010010200302001003510211102011009910010100101000071012711999210000101001003610036100361003610036
1020410035750061992025101001010010100647152049695510035100358656387321010010200302001003510211102011009910010100101000071012711999210000101001003610036100361003610036
1020410035756061992025101001010010100647152049695510035100358656387321010010200302001008010211102011009910010100101000071012711999210000101001003610036100361003610036
10204100357560251992025101001010010100647152049695510035100358656387321010010200302001003510211102011009910010100101000071012711999210000101001003610036100361003610036
102041003576006199202510100101001012264715214969551003510035865638732101001020030200100351021110201100991001010010100013871012711999210000101001003610036100361003610036
1020410035770061992025101001010010100647152049695510035100358656387321010010200302001003510211102011009910010100101000071012711999210000101001003610036100361003610036
1020410035750061992025101001010010100647152049695510035100358656387321010010200302001003510211102011009910010100101000071012711999210000101001003610036100361003610036
102041003575010861992025101001010010100647152049695510035100358656387321010010200302001003510211102011009910010100101000071012711999210000101001003610036100361003610036
1020410035760061992025101001010010100647152049695510035100358656387321010010200302001003510211102011009910010100101000071012711999210000101001003610036100361003610036

1000 unrolls and 10 iterations

Result (median cycles for code): 1.0035

retire uop (01)cycle (02)03l2 tlb miss data (0b)1e3f4d51schedule 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)acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
1002410035750396199182510010100101001064724614969551003510035867838754100101002030020100351041110021109101001010010220064032733999310000100101003610036100361003610036
10024100357504056199182510010100101001064724614969551003510035867838754100101002030020100351041110021109101001010010000064032733999310000100101003610036100361003610036
100241003575006199182510010100101001064724614969551003510035867838754100101002030020100351041110021109101001010010000064032733999310000100101003610036100361003610036
100241003575006199182510010100101001064724614969551003510035867838754100101002030020100351041110021109101001010010000064032733999310000100101003610036100361003610036
100241003575006199182510010100101001064724614969551003510035867838754100101002030020100351041110021109101001010010000064032733999310000100101003610036100361003610036
100241003575006199182510010100101001064724614969551003510035867838754100101002030020100351041110021109101001010010000064032733999310000100101003610036100361003610036
100241003575006199182510010100101001064724514969551003510035867838754100101002030020100351041110021109101001010010000764032733999310000100101003610036100361003610036
100241003575006199182510010100101001064724614969551003510035867838754100101002030020100351041110021109101001010010000064032733999310000100101003610036100361003610036
100241003575006199182510010100101001064724614969551003510035867838754100101002030020100351041110021109101001010010000064032733999310000100101003610036100361003610036
100241003575006199182510010100101001064724614969551003510035867838754100101002030020100351041110021109101001010010000064032733999310000100101003610036100361003610036

Test 3: Latency 1->3

Code:

  csinc w0, w1, w0, hi
  mov x0, 1
  mov x1, 2

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code): 1.0035

retire uop (01)cycle (02)031e3f4d51schedule 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)l1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
1020410035750619920251010010100101006471521496955100351003586563873210100102003020010035102111020110099100101001010000071012711999210000101001003610036100361003610036
10204100357506199202510100101001010064715214969551003510035865638732101001020030200100351021110201100991001010010100008171012711999210000101001003610036100361003610036
10204100357506199202510100101001010064715214969551003510035865638732101001020030200100351021110201100991001010010100006071012711999210000101001003610036100361003610036
1020410035750619920251010010100101006471521496955100351003586563873210100102003020010035102111020110099100101001010000071012711999210000101001003610036100361003610036
10204100357506199202510100101001010064715214969551003510035865638732101001020030200100351021110201100991001010010100021071012711999210000101001003610036100671003610036
1020410035750619920251010010100101006471521496955100351003586563873210100102003020010035102111020110099100101001010000071012711999210000101001003610036100361003610036
10204100357505369920251010010100101006471521496955100351003586563873210100102003020010035102111020110099100101001010000071012711999210000101001003610036100361003610036
1020410035750619920251010010100101006471521496955100351003586563873210100102003020010035102111020110099100101001010000071012711999210000101001003610036100361003610036
1020410035759619920251010010100101006471521496955100351003586563873210100102003020010035102111020110099100101001010000071012711999210000101001003610036100361003610036
1020410035750619920251010010100101006471521496955100351003586563873210100102003020010035102111020110099100101001010000071012711999210000101001003610036100361003610036

1000 unrolls and 10 iterations

Result (median cycles for code): 1.0035

retire uop (01)cycle (02)031e3f4d51schedule 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)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
10024100357506199182510010100101001064724614969551003510035867838754100101002030020100351041110021109101001010010003064022722999310000100101003610036100361003610036
1002410035760619918251001010010100106472460496955100351003586783875410010100203002010035104111002110910100101001000064022722999310000100101003610036100361003610036
1002410035750619918251001010010100106472460496955100351003586783875410010100203002010035104111002110910100101001000064023622999310000100101003610036100361003610036
1002410035750619918251001010010100106472460496955100351003586783875410010100203002010035104111002110910100101001000664022722999310000100101003610036100361003610036
1002410035750619918251001010010100106472460496955100351003586783875410010100203002010035104111002110910100101001000064022722999310000100101003610036100361003610036
1002410035770619918251001010010100106472460496955100351003586783875410010100203002010035104111002110910100101001000064022722999310000100101003610036100361003610036
1002410035750619918251001010010100106472460496955100351003586783875410010100203002010035104111002110910100101001000064022722999310000100101003610036100361003610036
1002410035750619918251001010010100106472460496955100351003586783875410010100203002010035104111002110910100101001000064022722999310000100101003610036100361003610036
1002410035750619918251001010010100106472460496955100351003586783875410010100203002010035104111002110910100101001000064022722999310000100101003610036100361003610036
1002410035750619918251001010010100106472460496955100351003586783875410010100203002010035104111002110910100101001000064022722999310000100101003610036100361003610036

Test 4: Latency 1->4

Chain cycles: 1

Code:

  csinc w0, w1, w2, hi
  tst x0, 1
  mov x0, 1
  mov x1, 2
  mov x2, 3

(non-fused SUB/CBNZ loop)

100 unrolls and 100 iterations

Result (median cycles for code, minus 1 chain cycle): 1.0035

retire uop (01)cycle (02)031e1f3f4d51schedule uop (52)schedule int uop (53)dispatch int uop (56)int uops in schedulers (59)60696a6d6emap stall dispatch (70)flags prf full (73)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 int alu (97)9fl1d cache writeback (a8)a9accdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
202042003515000611992625202002020020200129765014916955200352003517406031748120200202004020020035104112020110099201001000000001310128111999220100101002003620036200362003620036
202042003515000611992625202002020020200129765014916955200352003517406031748120200202004020020035104112020110099201001000000001310128111999220100101002003620036200362003620036
2020420035150120611992625202002020020200129765014916955200352003517406071753320200202004020020035104112020110099201001000000001310128111999220100101002003620082200822003620036
20204200351504110611992625202002020020200129765014916955200352003517406031748120200202004020020035104112020110099201001000000001310128111999220100101002003620036200362003620036
2020420035150210611992625202002020020200129765014916955200352003517406031748120200202004020020035104112020110099201001000000001310128111999220100101002003620036200362003620036
2020420035150150611992625202002020020200129765014916955200352003517406031748120200202004020020035104112020110099201001000000301310128111999220100101002003620036200362003620036
202042003515000611992625202002020020200129765014916955200352003517406031748120200202004020020035104112020110099201001000000001310128111999220100101002003620036200362003620036
202042003515000611992625202002020020200129765014916955200352003517406031748120200202004020020035104112020110099201001000000001310128111999220100101002003620036200362003620036
202042003515000611992625202002020020200129765014916955200352003517406031748120200202004020020035104112020110099201001000000001310128111999220100101002003620036200362003620036
202042003515000611992625202002020020200129765014916955200352003517406031748120200202004020020035104112020110099201001000000301310128111999220100101002003620036200362003620036

1000 unrolls and 10 iterations

Result (median cycles for code, minus 1 chain cycle): 1.0035

retire uop (01)cycle (02)03191e3f4d51schedule 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 int alu (97)9fl1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
200242003515000821991825200202002020020129729714916955200352003517428317504200202002040020200351041120021109200101000000127092711111999520010100102003620036200362003620036
20024200351500061199182520020200202002012972971491695520035200351742831750420020200204002020035104112002110920010100000012704271191999520010100102003620036200362003620036
20024200351500126119918252002020020200201297297149169552003520035174283175042002020020400202003510411200211092001010000031270102711111999520010100102003620036200362003620036
20024200351490061199182520020200202002012972971491695520035200351742831750420020200204002020035104112002110920010100000012705275111999520010100102003620036200362003620036
200242003515000611991825200202002020020129729704916955200352003517428317504200202002040020200351041120021109200101000000127011274111999520010100102003620036200362003620036
200242003515002461199182520020200202002012972970491695520035200351742831750420020200204002020035104112002110920010100000012709275111999520010100102003620036200362003620036
200242003515000611991825200202002020020129729714913915200352003517428317504200202002040020200351041120021109200101000000127011271151999520010100102003620036200362003620036
200242003515000821991825200202002020020129729704916955200352003517428317504200202002040020200351041120021109200101000000127052711111999520010100102003620036200362003620036
2002420035150006119918252002020020200201297297049169552003520035174283175042002020020400202003510411200211092001010000001270122711111999520010100102003620036200362003620036
200242003515000611991825200202002020020129729704916955200352003517428317504200202002040020200351041120021109200101000000127052710111999520010100102003620036200362003620036

Test 5: throughput

Count: 8

Code:

  csinc w0, w8, w9, hi
  csinc w1, w8, w9, hi
  csinc w2, w8, w9, hi
  csinc w3, w8, w9, hi
  csinc w4, w8, w9, hi
  csinc w5, w8, w9, hi
  csinc w6, w8, w9, hi
  csinc w7, w8, w9, hi
  mov x8, 9
  mov x9, 10

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code divided by count): 0.3342

retire uop (01)cycle (02)031e3f4d51schedule 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
8020426798200036025801008010080100479799149236560267362673616672316691801008020024020026736661180201100991008010080100065110219112673280000801002673726737267372673726737
8020426736200036025801008010080100479799049236560267362673616672316691801008020024020026736661180201100991008010080100005110119112673280000801002673726737267372673726737
8020426736200036025801008010080100479799149236560267362673616672316691801008020024020026736661180201100991008010080100005110119112673280000801002673726737267372673726737
8020426736200036025801008010080100479799149236560267362673616672316691801008020024020026736661180201100991008010080100035110119112673280000801002673726737267372673726737
8020426736200036025801008010080100479799049236560267362673616672316691801008020024020026736661180201100991008010080100035110119112673280000801002673726737267372673726737
8020426736200036025801008010080100479799149236560267362673616672316691801008020024020026736661180201100991008010080100005110119112673280000801002673726737267372673726737
8020426736201036025801008010080100479799149236560267362673616672316691801008020024020026736661180201100991008010080100035110119112673280000801002673726737267372673726737
8020426736200036025801008010080100479799149236560267362673616672316691801008020024020026736661180201100991008010080100035110119112673280000801002673726737267372673726737
8020426736200036025801008010080100479799149236560267362673616672316691801008020024020026736661180201100991008010080100005110119112673280000801002673726737267372673726737
80204267362009360258010080100801004797991492365632673626736166723166918010080200240200267366611802011009910080100801007605110119112673280000801002673726737267372673726737

1000 unrolls and 10 iterations

Result (median cycles for code divided by count): 0.3338

retire uop (01)cycle (02)03mmu table walk instruction (07)mmu table walk data (08)l2 tlb miss data (0b)18191e1f3f51schedule 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)a9acc2branch mispred nonspec (cb)cfd5map dispatch bubble (d6)daddfetch restart (de)e0? int output thing (e9)? int retires (ef)f5f6f7f8fd
8002426711200000000036258001080010800104720590492362626706267061666531668480010800202400202670666118002110910800108001000000630050202180222670280000800102670726707267072670726707
800242670620000000003625800108001080010472059049236262670626706166653166848001080020240020267066611800211091080010800100000000050202180222670280000800102670726707267072670726707
800242670620000000003625800108001080010472059149236262670626706166653166848001080020240020267066611800211091080010800100000030050202180222670280000800102670726707267072670726707
800242670619900000003625800108001080010472059149236262670626706166653166848001080020240020267066611800211091080010800100000030050202181222670280000800102670726707267072670726707
800242670619900000003625800108001080010472059049236262670626706166653166848001080020240020267066611800211091080010800100000030050202180222670280000800102670726707267072670726707
800242670620000000003625800108001080010472059149236262670626706166653166848001080020240020267066611800211091080010800100000030050202180222670280000800102670726707267072670726707
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