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

FRINTX (scalar, D)

Test 1: uops

Code:

  frintx d0, d0
  movi v0.16b, 1
  movi v1.16b, 2

(no loop instructions)

1000 unrolls and 1 iteration

Retires: 1.000

Issues: 1.000

Integer unit issues: 0.000

Load/store unit issues: 0.000

SIMD/FP unit issues: 1.000

retire uop (01)cycle (02)03mmu table walk data (08)181e3f4e51schedule uop (52)schedule simd uop (54)dispatch simd uop (57)ldst uops in schedulers (5b)60696d6emap stall dispatch (70)map rewind (75)map stall (76)dispatch uop (78)map simd uop (7e)map simd uop inputs (81)8283flush restart other nonspec (84)85inst all (8c)inst simd alu (9a)l1d tlb miss (a1)l1d cache writeback (a8)acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
1004303722000822547251000100010003981600301830373037241432895100010001000303730371110011000003073116112629100030383038303830383038
1004303722000612547251000100010003981600301830373037241432895100010001000303730371110011000000073116112629100030383038303830383038
10043037220001032547251000100010003981600301830373037241432895100010001000303730371110011000013073116112629100030383038303830383038
1004303722000612547251000100010003981600301830373037241432895100010001000303730371110011000013073116112629100030383038303830383038
1004303723000612547251000100010003981601301830373037241432895100010001000303730371110011000000073116112629100030383038303830383038
10043037230001032547251000100010003981600301830373037241432895100010001000303730371110011000000073116112629100030383038303830383038
1004303722009612547251000100010003981600301830373037241432895100010001000303730371110011000412633295124112629100030383038303830863074
1004303722100612538251000100010003981601301830373037241432895100010001000303730371110011000000073116112629100030383038303830383038
1004303723009612547251000100010003981601301830373037241432895100010001000303730371110011000000073116112629100030383038303830383038
1004303723000612547251000100010003981601301830373037241432895100010001000303730371110011000013073116112629100030383038303830383038

Test 2: Latency 1->2

Code:

  frintx d0, d0
  movi v0.16b, 1
  movi v1.16b, 2

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code): 3.0037

retire uop (01)cycle (02)03mmu table walk data (08)l2 tlb miss data (0b)18191e1f3a3f4e51schedule uop (52)schedule int uop (53)schedule simd uop (54)dispatch int uop (56)dispatch simd uop (57)int uops in schedulers (59)ldst uops in schedulers (5b)60696d6emap stall dispatch (70)map rewind (75)map stall (76)dispatch uop (78)map int uop (7c)map simd uop (7e)map int uop inputs (7f)map simd uop inputs (81)8283flush restart other nonspec (84)85inst all (8c)inst branch (8d)inst branch taken (90)inst branch cond (94)inst int alu (97)inst simd alu (9a)9fl1d tlb access (a0)l1d tlb miss (a1)ld unit uop (a6)l1d cache writeback (a8)a9acc2cfd0d5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
10204300372250000000612954725101001001000010010000500427716013001830037300372826432874510100200100002001000030037300371110201100991001001000010000018000710011611296330100001003003830038300383003830038
1020430037225000000061295472510100100100001001000050042771601300183003730037282643287451010020010000200100003003730037111020110099100100100001000000060710011611296330100001003003830038300383003830038
1020430037225000000061295472510100100100001001000050042771601300183003730037282643287451010020010000200100003003730037111020110099100100100001000000000710011611296330100001003003830038300383003830038
1020430037225000000061295472510100100100001001000050042771601300183003730037282643287451010020010000200100003003730037111020110099100100100001000000000710011611296330100001003003830038300383003830038
10204300372250000000612954725101001001000010010000500427716013005430037300372826432874510100200100002001000030037300371110201100991001001000010000023000710011611296330100001003003830038300383003830038
1020430037225000000061295472510100100100001001000050042771601300183003730037282643287451010020010000200100003003730037111020110099100100100001000000000710011611296330100001003003830038300383003830038
1020430037225000000061295472510100100100001001000050042771601300183003730037282643287451010020010000200100003003730037111020110099100100100001000000000710011611296330100001003003830038300383003830038
10204300372250000000612954725101001001000010010000500427716013001830037300372826432874510100200100002001000030037300371110201100991001001000010000040030710011611296330100001003003830038300383003830038
10204300372250000000612954725101001001000010010000500427716013001830037300372826432874510100200100002001000030037300371110201100991001001000010000000028480172322985527100001003037030369304053037430369
102043037322700778012640455829492159102021371005614111050683428662413023430327303702828533288571119322411160222110833037130322811020110099100100100001004222721956108720256212990330100001003037230371302273037330377

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0037

retire uop (01)cycle (02)03l2 tlb miss data (0b)18191e1f3a3f4e51schedule uop (52)schedule int uop (53)schedule simd uop (54)dispatch int uop (56)dispatch simd uop (57)int uops in schedulers (59)ldst uops in schedulers (5b)60696d6emap stall dispatch (70)map rewind (75)map stall (76)dispatch uop (78)map int uop (7c)map simd uop (7e)map int uop inputs (7f)map simd uop inputs (81)8283flush restart other nonspec (84)85inst all (8c)inst branch (8d)inst branch taken (90)inst branch cond (94)inst int alu (97)inst simd alu (9a)9fl1d tlb access (a0)ld unit uop (a6)st unit uop (a7)l1d cache writeback (a8)a9acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
10024300372250001200103295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000010306406162229629010000103003830038300383003830038
1002430037225000120061295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000010006402162229629010000103003830038300383003830038
100243003722500030061295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000000006402162229629010000103003830038300383003830038
10024300372240001200103295472510010101000010100005042771601300183008430037282903287671001020100002010000300373003711100211091010100001000000306402162229629010000103003830038300383003830038
1002430037225000300103295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000000306402162229629010000103003830038300383003830038
10024300372250001200103295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000000006402162229629010000103003830038300383003830038
10024300372250001200103295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000010306402162229629010000103003830038300383003830038
1002430037225000000103295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000030306402162229629010000103003830038300383003830038
10024300372250001200103295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000010306402162229629010000103003830038300383003830038
10024300372250001200103295472510010101000010100005042771601300183003730037282863287671001020100002010000300373003711100211091010100001000010306402162229629010000103003830038300863003830038

Test 3: throughput

Count: 8

Code:

  frintx d0, d8
  frintx d1, d8
  frintx d2, d8
  frintx d3, d8
  frintx d4, d8
  frintx d5, d8
  frintx d6, d8
  frintx d7, d8
  movi v8.16b, 9

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code divided by count): 0.2505

retire uop (01)cycle (02)03mmu table walk data (08)09l2 tlb miss data (0b)18191e3f51schedule uop (52)schedule int uop (53)schedule simd uop (54)dispatch int uop (56)dispatch simd uop (57)int uops in schedulers (59)ldst uops in schedulers (5b)696d6emap stall dispatch (70)map rewind (75)map stall (76)dispatch uop (78)map int uop (7c)map simd uop (7e)map int uop inputs (7f)map simd uop inputs (81)8283flush restart other nonspec (84)85inst all (8c)inst branch (8d)inst branch taken (90)inst branch cond (94)inst int alu (97)inst simd alu (9a)9fl1d tlb access (a0)l1d tlb miss (a1)st unit uop (a7)l1d cache writeback (a8)a9acc2branch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
8020420058150000001569525801081008000810080020500640132200202003920039997769990801202008003220080032200392003911802011009910010080000100000000011151180160020036800001002004020040200402004020040
802042003915000001127225801081008000810080020500640132200202003920039997769990801202008003220080032200392003911802011009910010080000100200103011151180160020036800001002004020040200402004020040
802042003915000000123025801081008000810080020500640132200202003920039997769990801202008003220080032200392003911802011009910010080000100000103011151180160020036800001002004020040200402004020040
8020420039150000004057225801081008000810080020500640132200202003920039997769990801202008003220080032200392003911802011009910010080000100000103011151180160020036800001002004020040200402004020040
802042003915000020127225801081008000810080020500640132200202003920039997769990801202008003220080032200392003911802011009910010080000100000203011151180160020036800001002004020040200402004020145
8020420039150000001270925801081008000810080020500640132201422003920039997769990801202008003220080032200392003911802011009910010080000100000003011151690160020036800001002004020040200402004020040
80204200391500000007225801081008000810080020500640132200202003920039997769990801202008003220080032200392003911802011009910010080000100000003011151180160020036800001002004020040200402004020040
80204200391500000097225801081008000810080341500640132200202003920039997769990801202008003220080032200392003911802011009910010080000100000103011151181340020036800001002004020040200402004020040
802042003915000000123025801081008000810080020500640132200202003920039997769990801202008003220080032200392003911802011009910010080000100000103011151180160020036800001002004020040200402004020040
802042003915000000127225801081008000810080020500640132200202003920039997769990801202008003220080032200392003911802011009910010080000100000103011151180210020036800001002004020040200402014320040

1000 unrolls and 10 iterations

Result (median cycles for code divided by count): 0.2505

retire uop (01)cycle (02)031e1f3f51schedule uop (52)schedule int uop (53)schedule simd uop (54)dispatch int uop (56)dispatch simd uop (57)int uops in schedulers (59)ldst uops in schedulers (5b)60696d6emap stall dispatch (70)map rewind (75)map stall (76)dispatch uop (78)map int uop (7c)map simd uop (7e)map int uop inputs (7f)map simd uop inputs (81)8283flush restart other nonspec (84)85inst all (8c)inst branch (8d)inst branch taken (90)inst branch cond (94)inst int alu (97)inst simd alu (9a)9fl1d tlb access (a0)ld unit uop (a6)l1d cache writeback (a8)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
80024200391501202122580010108000010800005064000002002020039200399996310019800102080000208000020039200391180021109101080000100005020616652003680000102004020040200402004020040
80024200391501207772580010108000010800005064000002002020039200399996310019800102080000208000020039200391180021109101080000100015020616652003680000102004020040200402004020040
800242003915000402580010108000010800005064000002002020039200399996310019800102080000208000020039200391180021109101080000100005020816652003680000102004020040200402004020040
80024200391500011132580010108000010800005064000002002020039200399996310019800102080000208000020039200391180021109101080000100005020616652003680000102004020040200402004020040
8002420039150002732580010108000010800005064000002002020039200399996310019800102080143208000020039200391180021109101080000100005020516562003680000102004020040200402004020040
800242003915000612580010108000010800005064000012002020039200399996310019800102080000208000020039200391180021109101080000100005020616652003680000102004020040200402004020040
8002420039150007782580010108000010800005064000012002020039200399996310019800102080000208000020039200391180021109101080000100005020616652003680000102004020040200402004020040
8002420039150008072580010108000010800005064000012002020039200399996310019800102080000208000020039200391180021109101080000100005020616672003680000102004020040200402004020040
8002420039155008872580010108000010800005064000002002020039200399996310019800102080000208000020039200391180021109101080000100005020816562003680000102004020040200402004020040
8002420039150007462580010108000010800005064000002002020039200399996310019800102080000208000020039200391180021109101080000100005020716562003680000102004020040200402004020040