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

ADDV (4H)

Test 1: uops

Code:

  addv h0, v0.4h
  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)031e3f4e51schedule uop (52)schedule simd uop (54)dispatch simd uop (57)ldst uops in schedulers (5b)696d6emap 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)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
1004303723012425472510001000100039816030183037303724143289510001000200030373037111001100073216112629100030383038303830383038
1004303723726125472510001000100039816030183037303724143289510001000200030373037111001100073116112629100030383038303830383038
100430372306125472510001000100039816030183037303724143289510001000200030373037111001100073116112629100030383038303830383038
100430372206125472510001000100039816030183037303724143289510001000200030373037111001100073116112629100030383038303830383038
1004303722246125472510001000100039816030183037303724143289510001000200030373037111001100073116112629100030383038303830383038
100430372206125472510001000100039816030183037303724143289510001000200030373037111001100073116112629100030383038303830383038
100430372206125472510001000100039816030183037303724143289510001000200030373037111001100073116112629100030383038303830383038
100430372306125472510001000100039816030183037303724143289510001000200030373037111001100073116112629100030383038303830383038
100430372306125472510001000100039816030183037303724143289510001000200030373037111001100073116112629100030383038303830383038
100430372206125472510001000100039816030183037303724143289510001000200030373037111001100073116112629100030383038303830383038

Test 2: Latency 1->2

Code:

  addv h0, v0.4h
  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)031e3f4e51schedule 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 cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
10204300372250197629547251010010010000100100005004277160030018300373003728264328745101002001000020020000300373003711102011009910010010000100007101161129633100001003003830038300383003830038
102043003722506129547251010010010000100100005004277160130018300373003728264328745101002001000020020000300373003711102011009910010010000100097101161129633100001003003830038300383003830038
102043003722566129547251010010010000100100005004277160130018300373003728264328745101002001000020020000300373003711102011009910010010000100007101161129633100001003003830038300383003830038
102043008622506129547251010010010000100100005004277160130018300373003728264328745101002001000020020000300373003711102011009910010010000100007101161129633100001003003830038300383003830038
102043003722506129547251010010010000100100005004277160130018300373003728264328745101002001000020020000300373003711102011009910010010000100007101161129633100001003003830038300383003830038
1020430037224034629547251010010010000100100005004277160130018300373003728264328745101002001000020020000300373003711102011009910010010000100007101161129633100001003003830038300383003830038
10204300372250120129547251010010010000100100005004277160130018300373003728264328745101002001000020020000300373003711102011009910010010000100007101161129633100001003003830038300383003830038
102043003722506129547251010010010000100100005004277160130018300373003728264328745101002001000020020000300373003711102011009910010010000100007101161129633100001003003830038300863003830038
102043003722506129547251010010010000100100005004277160130018300373003728264328745101002001000020020000300373003711102011009910010010000100007101161129633100001003003830038300383003830038
102043003722506129547251010010010000100100005004277160130018300373003728264328745101002001000020020000300373003711102011009910010010000100007101161129633100001003003830038300383003830038

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0037

retire uop (01)cycle (02)03mmu table walk data (08)l2 tlb miss data (0b)191e3f4e51schedule 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)9fld unit uop (a6)l1d cache writeback (a8)a9acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
10024300372250000124295472510010101000010100005042771603001830037300372828632876710010201000020200003003730037111002110910101000010010000640416332962910000103003830038300383003830038
100243003722500106129547251001010100001010000504277160300183003730037282863287671001020100002020000300373003711100211091010100001000000640316332962910000103003830038300383003830038
100243003722500106129547251001010100001010000504277160300183003730037282863287671001020100002020000300373003711100211091010100001000000640316332962910000103003830038300383003830038
100243003722500006129547251001010100001010000504277160300183003730037282863287671016320100002020000300373003711100211091010100001000000640316332962910000103003830038300383003830038
1002430084225000027429547251001010100001010000504277160300183003730037282863287671001020100002020000300373003711100211091010100001000000640316332962910000103003830038300383003830038
1002430037225000039129547251001010100001010000504277160300183003730037282863287671001020100002020000300373003711100211091010100001000000640316332962910000103003830038300383003830038
100243003722500006129547251001010100001010000504277160300183003730037282863287671001020100002020000300373003711100211091010100001000000640316332962910000103003830038300383003830038
1002430037225000188429547251001910100001010000504277160300183003730037282863287671001020100002020000300373003711100211091010100001000000640316332962910000103003830038300383003830038
100243003722500006129547251001010100001010000504277160300183003730037282863287671001020100002020000300373003711100211091010100001000000640316332962910000103003830038300383003830038
100243003722500006129547251001010100001010000504277160300183003730037282863287671001020100002020000300373003711100211091010100001000000640316332962910000103003830038300383003830038

Test 3: throughput

Count: 8

Code:

  addv h0, v8.4h
  addv h1, v8.4h
  addv h2, v8.4h
  addv h3, v8.4h
  addv h4, v8.4h
  addv h5, v8.4h
  addv h6, v8.4h
  addv h7, v8.4h
  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)03181e1f3f51schedule 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 cache writeback (a8)acbranch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfd5map dispatch bubble (d6)fetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
802042005915000030258010810080008100800205006401322002020039200399977699908012020080032200160064200392003911802011009910010080000100001115118216020036800001002004020040200402004020040
802042003915000030258010810080008100800205006401322002020039200399977699908012020080032200160064200392003911802011009910010080000100001115118016020036800001002004020040200402004020040
802042003915000053258010810080008100800205006401322002020039200399977699908012020080032200160064200392003911802011009910010080000100001115118016020036800001002004020040200402004020040
802042003915000030258010810080008100800205006401322002020039200399977699908012020080032200160064200392003911802011009910010080000100001115118016020036800001002004020040200402004020040
8020420039150000292258010810080008100800205006401322002020039200399977699908012020080032200160064200392003911802011009910010080000100201115118016020036800001002004020040200402004020040
802042003915000030258010810080008100800205006401322002020039200399977699908012020080032200160064200392003911802011009910010080000100001115118016020036800001002004020040200402004020040
8020420039150000302580108100800081008002050064013220020200392003999776999080120200800322001600642003920039118020110099100100800001000241115118016020036800001002004020040200902004020040
802042003915000030258010810080008100800205006401322002020039200399977699908012020080032200160064200392003911802011009910010080000100001115118016020036800001002004020040200402004020040
802042003915000030258010810080008100800205006401322002020039200399977699908012020080032200160064200392003911802011009910010080000100001115118016020036800001002004020040200402004020040
8020420039150000179258010810080008100800205006401322002020039200399977699908012020080032200160064200392003911802011009910010080000100001115118016020036800001002004020040200402004020040

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)03181e1f3f51schedule 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)5f60696d6emap stall dispatch (70)simd prf full (72)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 cache writeback (a8)a9acc2branch cond mispred nonspec (c5)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
8002420039150000862580010108000010800005064000001200202003920039999603100198001020800002016000020039200391180021109101080000100000050209164142003680000102004020040200402004020040
80024200391501001282580010108000010800005064000000200202003920039999603100198001020800002016000020039200391180021109101080000100000050206166112003680000102004020040200402004020040
8002420039150000632580010108000010800005064000000200202003920039999603100198001020800002016000020039200391180021109101080000100000050204164142003680000102004020040200402004020040
800242003915000040258001010800001080000506400001120020200392003999960310019800102080000201600002003920039118002110910108000010000005020416462003680000102004020040200402004020040
800242003915000040258001010800001080000506400000120020200392003999960310019800102080000201600002003920039118002110910108000010000005020616642003680000102004020040200402004020040
80024200391500004025800101080000108000050640000002002020039200399996031001980010208000020160000200392003911800211091010800001041030050204164112003680000102004020040200402004020040
8002420039150000402580010108000010800005064000000200202003920039999603100198001020800002016000020039200391180021109101080000100000050204164102003680000102004020040200402004020040
8002420039150000402580010108000010800005064000001200202003920039999603100198001020800002016000020039200391180021109101080000100000050204168102003680000102004020040200402004020040
80024200391500001492580010108000010800005064000001200202003920039999673100198001020800002016000020039200391180021109101080000100000050206164112003680000102004020040200402004020040
8002420039150090612580010108000010800005064000000200202003920039999603100198001020800002016000020039200391180021109101080000100000050204164112003680000102004020040200402004020040