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

FRINTP (vector, 4S)

Test 1: uops

Code:

  frintp v0.4s, v0.4s
  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)mmu table walk data (08)l2 tlb miss instruction (0a)l2 tlb miss data (0b)18191e1f3f4e51schedule 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 access (a0)l1d tlb miss (a1)ld unit uop (a6)st unit uop (a7)l1d cache writeback (a8)a9acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
1004303724000000006125472510001000100039816003018303730372414328951000100010003037303711100110000000000073216222629100030383038303830383038
1004303724000000006125472510001000100039816003018303730372414328951000100010003037303711100110000000000073216222629100030383038303830383038
10043037230000000014425472510001000100039816003018303730372414328951000100010003037303711100110000000100073216222629100030383038303830383038
1004303723000000006125472510001000100039816003018303730372414328951000100010003037303711100110000000000073216222629100030383038303830383038
1004303723000000006125472510001000100039816003018303730372414328951000100010003037303711100110000000000073216222629100030383038303830383038
10043037240000000015125472510001000100039816003018303730372414328951000100010003037303711100110000000103073216222629100030383038303830383038
10043037230000001806125472510001000100039816003018303730372414328951000100010003037303711100110000000000073216222629100030383038303830383038
10043037240000000010325472510001000100039816003018303730372414328951000100010003037303711100110000000000073216222629100030383038303830383038
10043037230000000022025472510001000100039816003018303730372414328951000100010003037303711100110000000000073216222629100030383038303830383038
1004303724000000006125472510001000100039816003018303730372414328951000100010003037303711100110000000000073216222629100030383038303830383038

Test 2: Latency 1->2

Code:

  frintp v0.4s, v0.4s
  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)03l2 tlb miss data (0b)18191e1f3f4e51schedule 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)l1d cache writeback (a8)acbranch cond mispred nonspec (c5)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
1020430037233000006129547251010010010000100100005004277160130018300373003728264328745101002001000020010000300373003711102011009910010010000100000007101161129633100001003003830038300383003830038
10204300372331224588149729547251013210010000100100005004277160030018300373003728264328745101002001000020010000300373003711102011009910010010000100000289307101161129633100001003003830038300383003830038
10204300372320000010329547251010010010000100100005004277160030018300373003728264328745101002001000020010000300373003711102011009910010010000100001007101161129633100001003003830038300383003830038
1020430037233000006129547251010010010000100100005004277160030018300373003728264328745101002001000020010000300373003711102011009910010010000100000007101161129633100001003003830038300383003830038
10204300372330009006129547251010010010000100100006494277160130018300373003728264328745101002001000021210000300373003711102011009910010010000100001007101161129633100001003003830038300383003830038
10204300372320008406129547251010010010000100100005004277160030018300373003728264328745101002001000020010000300373003711102011009910010010000100000007101161129633100001003003830038300383003830038
10204300372330000061295472510100100100001001000050042771600300183003730037282642328745101002001000020010000300373003711102011009910010010000100000007101161129633100001003003830038300383003830038
102043003723200031806129547251010010010000100100005004277160130018300373003728264328745101002001000020010000300373003711102011009910010010000100000307321161129633100001003003830038300383003830038
10204300372320000022329547251010010010000100100005004277160130018300373003728264328745101002001000020010000300373003711102011009910010010000100000007101161129633100001003003830038300383003830038
102043003723300090010329547251010010010000100100005004277160130018300373003728264328745101002001000020010000300373003711102011009910010010000100000007101161129633100001003003830038300383003830038

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0037

retire uop (01)cycle (02)03181e3f4e51schedule 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 miss (a1)l1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
100243003723300612954725100101010000101000050427716003001830037300372828632876710010201000020106543003730037111002110910101000010006640216222962910000103003830038300383003830038
100243003722500612954725100101010000101000050427716003001830037300372828632876710010201000020100003003730037111002110910101000010009640216222962910000103003830038300383003830038
10024300372240017629547251001010100001010000504277160030018300373003728286328767100102010000201000030037300371110021109101010000100030640216222962910000103003830038300383003830038
100243003722500612954725100101010000101000050427716013001830037300372828632876710010201000020100003003730037111002110910101000010000640216222962910000103003830038300383003830038
100243003722500612954725100101010000101000050427716013001830037300372828632876710010201000020100003003730037111002110910101000010000640216222962910000103003830038300383003830038
100243003722500612954725100101010000101000050427716013001830037300372828632876710010201000020101623003730037111002110910101000010000640216222962910000103003830038300383003830038
100243003722500612954725100101010000101000050427716013001830037300372828632876710010201000020100003003730037111002110910101000010000640216222962910000103003830038300383003830038
100243003722500612954725100101010000101000050427716013001830037300372828632876710010201000020100003003730037111002110910101000010000640216222962910000103003830038300383003830038
100243003722500612954725100101010000101000050427716013001830037300372828632876710010201000020100003003730037111002110910101000010000640216222962910000103003830038300383003830038
100243003722500612954725100101010000101000050427716013001830037300372828632876710010201000020100003003730037111002110910101000010000640216222962910000103003830038300383003830038

Test 3: throughput

Count: 8

Code:

  frintp v0.4s, v8.4s
  frintp v1.4s, v8.4s
  frintp v2.4s, v8.4s
  frintp v3.4s, v8.4s
  frintp v4.4s, v8.4s
  frintp v5.4s, v8.4s
  frintp v6.4s, v8.4s
  frintp v7.4s, v8.4s
  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)1e3f51schedule 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)acc2branch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfmap dispatch bubble (d6)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
802042006815509302580108100800081008002050064013220020200392003999776999080120200800322008003220039200391180201100991001008000010000011151181620036800001002004020040200402004020040
8020420039155027302580108100800081008002050064013220020200392003999776999080120200800322008003220039200391180201100991001008000010000011151181620036800001002004020040200402004020040
802042003915500582580108100800081008002050064013220020200392003999776999080120200800322008003220039200391180201100991001008000010000011151181620036800001002004020040200402004020040
802042003915600302580108100800081008002050064013220020200392003999779999080120200800322008003220039200391180201100991001008000010000011151181620036800001002004020040200402004020040
802042003915500302580108100800081008002050064013220020200392003999776999080120200800322008003220039200391180201100991001008000010000011151181620036800001002004020040200402004020040
802042003915500302580108100800081008002050064013220020200392003999776999080120200800322008003220039200391180201100991001008000010000011151181620036800001002004020040200402004020040
802042003915500302580108100800081008002050064013220020200392003999776999080120200800322008003220039200391180201100991001008000010000011151181620036800001002004020040200402004020040
80204200391550165582580108100800081008002050064013220020200392003999776999080120200800322008003220039200391180201100991001008000010000011151181620036800001002008820040200402004020040
802042003915500302580108100800081008002050064013220020200392003999866999080120200800322008003220039200391180201100991001008000010003011151181620036800001002004020040200402004020040
802042003915500302580108100800081008002050064013220020200392003999776999080120200800322008003220039200391180201100991001008000010000011151181620036800001002004020040200402004020040

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)031e3f51schedule 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)91inst branch cond (94)inst int alu (97)inst simd alu (9a)9fst unit uop (a7)l1d cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
80024200511561714025800101080000108000050640000120020200392003999963100198001020800002080000200392003911800211090101080000100105020516252003680000102004020040200402004020040
800242003915534025800101080000108000050640000020020200392003999963100198001020800002080000200392003911800211090101080000100005020216242003680000102004020040200402004020040
800242003915564025800101080000108000050640000020020200392003999963100198001020800002080000200392003911800211090101080000100005020216522003680000102004020040200402004020040
8002420039155306825800101080000108000050640000120020200392003999963100198001020800002080000200392003911800211090101080000100005020216242003680000102004020040200402004020040
800242003915664025800101080000108000050640000120020200392003999963100198001020800002080000200392003911800211090101080000100005020416452003680000102004020040200402004020040
800242003915604025800101080000108000050640000020020200392003999963100198001020800002080000200392003911800211090101080000100005020216422003680000102004020040200402004020040
800242003915564025800101080000108000050640820020020200392003999963100198001020800002080000200392003911800211090101080000100005020440452003680000102004020040200402004020040
8002420039156154025800101080000108000050640000020020200392003999963100198001020800002080000200392003911800211090101080000100005020216522003680000102004020040200402004020040
800242003915504025800101080000108000050640000020020200392003999963100198001020800002080000200392003911800211090101080000100005020416422003680000102004020040200402004020040
8002420039155334025800101080000108000050640000020020200392003999963100198001020800002080000200392003911800211090101080000100005020416442003680000102004020040200402004020040