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

SQABS (scalar, D)

Test 1: uops

Code:

  sqabs 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 instruction (07)1e1f3f4e51schedule 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)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
1004303723030612547251000100010003981600301830373037241432895100010001000303730371110011000073216112629100030383038303830383038
1004303724000842547251000100010003981600301830373037241432895100010001000303730371110011000073116112629100030383038303830383038
1004303722000612547251000100010003981600301830373037241432895100010001000303730371110011000073116112629100030383038303830383038
1004303722000612547251000100010003981600301830373037241432895100010001000303730371110011000073116112629100030383038303830383038
10043037220088612547251000100010003981601301830373037241432895100010001000303730371110011000073116112629100030383038303830383038
10043037230001562547251000100010003981600301830373037241432895100010001000303730371110011000073116112629100030383038303830383038
1004303723000612547251000100010003981600301830373037241432895100010001000303730371110011000073116112629100030383038303830383038
1004303723000612547251000100010003981600301830373037241432895100010001000303730371110011000073116112629100030383038303830383038
10043037220006125472510001000100039816003018303730372414328951000100010003037303711100110003373116112629100030383038303830383038
1004303722000612547251000100010003981600301830373037241432895100010001000303730371110011000073116112629100030383038303830383038

Test 2: Latency 1->2

Code:

  sqabs 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)03191e3f4e51schedule 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)9fld unit uop (a6)l1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
102043003722503211032954725101001001000010010000500427716013001830037300372826432874510100200100002001000030037300371110201100991001001000010000071021611296330100001003003830038300383003830038
102043003722511035612954725101001001000012610000500427716013001830037300372826432874510100200100002001000030037300371110201100991001001000010000071011611296330100001003003830038300383003830038
1020430037225033612954725101001001000010010000500427716013001830037300372826432874510100200100002001000030037300371110201100991001001000010000071011611296330100001003003830038300383003830038
1020430037224018612954725101001001000010010000500427716013001830037300372826432874510100200100002001000030037300371110201100991001001000010000071011611296330100001003003830038300383003830038
1020430037225018612954725101001001000010010000500427716013001830037300372826432874510100200100002001000030037300371110201100991001001000010000071011611296330100001003003830038300383003830038
102043003722506612954725101001001000010010000500427716013001830037300372826432874510100200100002001000030037300371110201100991001001000010000071011611296330100001003003830038300383003830038
1020430037225099612952925101001001000010010148500427716013001830037300372826432874510100200100002001000030037300371110201100991001001000010000071011611296330100001003003830038300383003830038
102043003722506612954725101001001000010010000500427716013001830037300372826432874510100200100002001000030037300371110201100991001001000010000071011611296330100001003003830038300383003830038
102043003722606612954725101001001000010010000500427716013001830037300372826432874510100200100002001000030037300371110201100991001001000010000071011611296330100001003003830038300383003830038
10204300372250489612954725101001001000010010000500427716013001830037300372826432874510100200100002001000030037300371110201100991001001000010000071011611296330100001003003830038300383003830038

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0037

retire uop (01)cycle (02)0318191e1f3f4e51schedule 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)9fbranch mispred nonspec (cb)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
1002430037225001290612954725100101010000101000050427716030018300373003728286328767100102010000201000030037300371110021109101010000100640216222962910000103003830038300383003830038
10024300372250000822954725100101010000101000050427716030018300373003728286328767100102010000201000030037300371110021109101010000100640216222962910000103003830038300383003830038
1002430037225000011052954725100101010000101000050427716030018300373003728286328767100102010000201000030037300371110021109101010000100640216222962910000103003830038300383003830038
100243003722500007552954725100101010000101000050427716030018300373003728286328767100102010000201000030037300371110021109101010000100640324232962910000103003830038300383003830038
1002430037226000010512954725100101010000101000050427716030018300373003728286328767100102010000201000030037300371110021109101010000100640216222962910000103003830038300383003830038
100243003722500010816682954725100101010000101000050427716030018300373003728286328767100102010000201000030037300371110021109101010000100640216222962910000103003830038300383003830038
1002430037225000060132954725100101010000101000050427716030018300373003728286328767103132010000201016130037300371110021109101010000100640216222962910000103003830038300383003830038
1002430037225000011032954725100101010000101000050427716030018300373003728286328767100102010000201000030037300371110021109101010000100640216222962910000103003830038300383003830038
1002430037225000012462954725100101010000101000050427716030018300373003728286328767100102010000201000030037300371110021109101010000100640216222962910000103003830038300383003830038
100243003722500002082954725100101010000101000050427716030018300373003728286328767100102010000201000030037300371110021109101010000100640216222962910000103003830038300383003830038

Test 3: throughput

Count: 8

Code:

  sqabs d0, d8
  sqabs d1, d8
  sqabs d2, d8
  sqabs d3, d8
  sqabs d4, d8
  sqabs d5, d8
  sqabs d6, d8
  sqabs 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)l2 tlb miss instruction (0a)l2 tlb miss data (0b)18191e1f3f51schedule 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)79map 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)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
802042005915000000003025801081008000810080020500640132120020200392003999776999080120020080032200800322003920039118020110099100100800001000000000011151182160020036800001002004020040200402004020040
802042003915000000003025801081008000810080020500640132120020200392003999776999080120020080032200800322003920039118020110099100100800001000000000011151180160020036800001002004020040200402004020040
8020420039149000000031525801081008000810080020500640132120020200392003999776999080120020080032200800322003920039118020110099100100800001000000103011151180160020036800001002004020040200402004020040
802042003915000100003025801081008000810080020500640132120020200392003999776999080120020080032200800322003920039118020110099100100800001000000000011151180160020087800001002004020040200402004020040
802042003915000000003025801081008000810080020500640132120020200392003999776999080120020080032200800322003920039118020110099100100800001000000000011151180160020036800001002004020040200402004020040
802042003915000000003025801081008000810080020500640132120020200392003999776999080120020080032200800322003920039118020110099100100800001000000000011151180160020036800001002004020040200402004020040
802042003915000000003025801081008000810080020500640132120020200392003999776999080120020080032200800322003920039118020110099100100800001000000000011151180160020036800001002004020040200402004020040
80204200391500000029705125801081008000810080020500640132120020200392003999776999080120020080032200800322003920039118020110099100100800001000000000011151180160020036800001002004020040200402004020040
802042003915000000003025801081008000810080020500640132120020200392003999776999080120020080032200800322003920039118020110099100100800001000000000011151180160020036800001002004020040200402004020040
802042003915000000003025801081008000810080020500640132120020200392003999776999080120020080032200800322003920039118020110099100100800001000000100011151180160020036800001002004020040200402004020040

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)03l2 tlb miss instruction (0a)l2 tlb miss data (0b)1e3a3f51schedule 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)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
8002420039150001380402580010108000010800005064000001200202003920039999631001980010208000020800002003920039118002110910108000010005020316442003680000102004020040200402004020040
800242003915000150402580010108000010800005064000001200202003920039999631001980010208000020800002003920039118002110910108000010005020316332003680000102004020040200402004020040
800242003915010480402580010108000010801075064000031200202003920039999631001980010208000020800002003920039118002110910108000010005020316442003680000102004020040200402004020040
80024200391600000402580010108000010800005064000031200202003920039999631001980010208000020800002003920039118002110910108000010005038516432003680000102004020040200402004020040
80024200391500000402580010108000010800005064000031200202003920039999631001980010208000020800002003920039118002110910108000010005020416442003680000102004020040200402004020040
80024200391501000402580010108000010800005064000031200202003920039999631001980010208000020800002003920039118002110910108000010005020516552003680000102004020040200402004020040
80024200391500000402580010108000010800005064000031200202003920039999631001980010208000020800002003920039118002110910108000010005037316532003680000102004020040200402004020040
80024200391500000402580010108000010800005064000031200202003920039999631001980010208000020800002003920039118002110910108000010005020716242003680000102004020040200402004020040
80024200391500000402580010108000010800005064000031200202003920039999631001980010208000020800002003920039118002110910108000010005020316442003680000102004020040200402004020040
80024200391500000402580010108000010800005064000031200202003920039999631001980010208000020800002003920039118002110910108000010005020516342003680000102004020040200402004020040