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

SQNEG (vector, 4S)

Test 1: uops

Code:

  sqneg 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)03l2 tlb miss data (0b)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 cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
10043037230006125472510001000100039816003018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
10043037220006125472510001000100039816003018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
10043037221006125472510001000100039816003018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
1004303723002161254743100010001000398160030183037303724143289510001000100030373037111001100002473116112629100030383038303830383038
10043037220006125472510001000100039816013018303730372414328951000100010003037303711100110003073116112629100030383038303830383038
10043037230006125472510001000100039816003018303730372414328951000100010003037303711100110000373116112629100030383038303830383038
10043037220006125472510001000100039816003018303730372414328951000100010003037303711100110004073116112629100030383038303830383038
10043037220006125472510001000100039816003018303730372414328951000100010003037303711100110000073116112629100030383038303830383038
100430372200061254725100010001000398160130183037303724143289510001000100030373037111001100003073116112629100030383038303830383038
10043037230006125472510001000100039816003018303730372414328951000100010003037303711100110000073116112629100030383038303830383038

Test 2: Latency 1->2

Code:

  sqneg 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)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)acbranch cond mispred nonspec (c5)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
1020430037224061295472510100100100001001000050042771601300183003730037282643287451010020010000200100003003730037111020110099100100100001000007102161129633100001003003830038300383003830038
1020430037225061295472510100100100001001000050042771601300183003730084282643287451010020010000200100003003730037111020110099100100100001000007101161129633100001003003830038300383003830038
1020430037225061295472510100100100001001000050042771601300183003730037282643287451010020010000200100003003730037111020110099100100100001000007101161129633100001003003830038300383003830038
1020430037225061295472510100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020110099100100100001000007101161129633100001003003830038300383003830038
1020430037225061295472510100100100001001000050042771601300183003730037282643287451010020010000200100003003730037111020110099100100100001000007101161129633100001003003830038300383003830038
1020430037225061295472510100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020110099100100100001000007101161129633100001003003830038300383003830038
1020430037225061295472510100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020110099100100100001000007101161129633100001003003830038300383003830038
1020430037225061295472510100100100001001000050042771601300183003730037282643287451010020010000200100003003730037111020110099100100100001000007101161129633100001003003830038300383003830038
1020430037225061295472510100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020110099100100100001000007101161129633100001003003830038300383003830038
1020430037225061295472510100100100001001000050042771600300183003730037282643287451010020010000200100003003730037111020110099100100100001000027101161129633100001003003830038301803003830038

1000 unrolls and 10 iterations

Result (median cycles for code): 3.0037

retire uop (01)cycle (02)03193f4e51schedule 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)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
1002430037225061295472510010101000010100005042771603001830037300372828632876710010201000020100003003730037111002110910101000010006403163329701010000103003830038300383003830038
1002430037225061295472510010101000010100005042771603001830037300372828632876710010201000020100003003730037111002110910101000010006403163329629010000103003830038300383003830038
1002430037224061295472510010101000010100005042771603001830037300372828632876710010201000020100003003730037111002110910101000010006403163329629010000103003830038300383003830038
1002430037225061295472510010101000010100005042771603001830037300372828632876710010201000020100003003730037111002110910101000010206403163329629010000103003830038300383003830038
1002430037225161295362510010101000010100005042771603001830037300372828632876710010201000020100003003730037111002110910101000010006403163329629010000103003830038300383003830038
1002430037224061295472510010101000010100005042771603001830037300372828632876710010201000020100003003730037111002110910101000010006403163329629010000103003830038300383003830038
1002430037225061295472510010101000010100005042771603001830037300372828632876710010201000020100003003730037111002110910101000010006403163329629010000103003830038300383003830038
1002430037225061295472510010101000010100005042771603001830037300372828632876710010201000020100003003730037111002110910101000010006403163329629010000103003830038300383003830038
1002430037225061295472510010101000010100005042771603001830037300372828632876710010201000020100003003730037111002110910101000010006403163329629010000103003830038300383003830038
1002430037224061295472510010101000010100005042771603001830037300372828632876710010201000020100003003730037111002110910101000010006403163329629010000103003830038300383003830038

Test 3: throughput

Count: 8

Code:

  sqneg v0.4s, v8.4s
  sqneg v1.4s, v8.4s
  sqneg v2.4s, v8.4s
  sqneg v3.4s, v8.4s
  sqneg v4.4s, v8.4s
  sqneg v5.4s, v8.4s
  sqneg v6.4s, v8.4s
  sqneg 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): 0.2506

retire uop (01)cycle (02)03mmu table walk instruction (07)mmu table walk data (08)09l2 tlb miss instruction (0a)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)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)acbranch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
8020420059150100103025801081008000810080020500640132120020200392003999776999080120200800322008003220039200391180201100991001008000010000011151185161120036800001002004020040200402004020040
8020420039150100103025801081008000810080020500640132120020200392003999776999080120200800322008003220039200391180201100991001008000010000011151181161120036800001002004020040200402004020040
8020420039150100107225801081008000810080020500640132120020200392003999776999080120200801422008013820039200391180201100991001008000010000011151181161120036800001002004020040200402004020040
8020420039150100109325801081008000810080020500640132120020200392003999776999080120200800322008003220039200391180201100991001008000010001011151181161120036800001002004020040200402004020040
8020420039150100103025801081008000810080020500640132120020200392003999776999080120200800322008003220039200391180201100991001008000010000011151181161120036800001002004020040200942004020040
8020420039150100103025801081008000810080020500640132020020200392003999776999080120200800322008003220039200391180201100991001008000010001011151181161120036800001002004020040200402004020040
80204200391501001011425801081008000810080020500640132120020200392003999776999080120200800322008003220039200391180201100991001008000010000011151181161120036800001002004020040200402004020040
8020420039150100105125801081008000810080020500640132120020200392003999776999080120200800322008003220039200391180201100991001008000010000011151181161120036800001002004020040200402004020040
8020420039150100103025801081008000810080020500640132120020200392003999776999080120200800322008003220039200391180201100991001008000010000011151181161120036800001002004020040200402004020040
8020420039150100103025801081008000810080020500640132120020200392003999776999080120200800382008003220039200391180201100991001008000010000011151181161120036800001002004020040200402004020040

1000 unrolls and 10 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)191e1f3f51schedule 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)6061696b6d6emap 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 cache writeback (a8)accfd0d2d5map dispatch bubble (d6)dbddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
8002420201151000214117640258001010800001080000506400001020020020039200399996310019800102080000208000020039200391180021109101080000100205020003160112003680000102004020040201422004020040
800242003915000000040258001010800001080000506400001020020020039200399996310019800102080000208000020039200391180021109101080000100005020001160112003680000102004020040200402004020040
800242003915000000040258001010800001080000506400001020020020039200399996310019800102080000208000020039200391180021109101080000100005020001160112003680000102004020040200402004020040
800242003915000000040258001010800001080000506400001020020020039200399996310019800102080000208000020039200391180021109101080000100005020001160112003680000102004020040200402004020040
800242003915000000040258001010800001080000506400001020020020039200399996310019800102080000208000020039200391180021109101080000100105020001160112003680000102004020040200402004020040
800242003915000000040258001010800001080000506400001020020020039200399996310019800102080000208000020039200391180021109101080000100105020001160112003680000102004020245200402004020040
800242003915000000040258001010800001080000506400001020020020039200399996310019801152080000208000020039200391180021109101080000100005020001164222003680000102004020040200402004020040
800242003915000000040258001010800001080000506400001020020020039200399996310019800102080000208000020039200391180021109101080000100005020001160112003680000102004020040200402004020040
800242003915000000040258001010800001080000506400001020020020039200399996310019800102080000208000020039200391180021109101080000100005020002160212003680000102004020040200402004020040
800242003915000000040258001010800001080000506400001020020020039200399996310019800102080000208000020039200391180021109101080000100005020001160112003680000102004020040200402004020040