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

FCMLE (vector, zero, 2D)

Test 1: uops

Code:

  fcmle v0.2d, v0.2d, #0
  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)1e3f4e51schedule 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)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
100420371500611686251000100010002645211201820372037157131895100010001000203720371110011000273116111786100020382038203820382038
100420371600841686251000100010002645211201820372037157131895100010001000203720371110011000073116111786100020382038203820382038
100420371600611686251000100010002645211201820372037157131895100010001000203720371110011000073116111786100020382038203820382038
100420371600611686251000100010002645211201820372037157131895100010001000203720371110011000073116111786100020382038203820382038
100420371600611686251000100010002645211201820372037157131895100010001000203720371110011000073116111786100020382038203820382038
100420371500611686251000100010002645211201820372037157131895100010001000203720371110011000073116111786100020382038203820382038
100420371500611686251000100010002645211201820372037157131895100010001000203720371110011000073116111786100020382038203820382038
100420371500611686251000100010002645211201820372037157131895100010001000203720371110011000073116111786100020382038203820382038
100420371500611686251000100010002645211201820372037157131895100010001000203720371110011000073116111786100020382038203820382038
100420371500611686251000100010002645211201820372037157131895100010001000203720371110011000073116111786100020382038203820382038

Test 2: Latency 1->2

Code:

  fcmle v0.2d, v0.2d, #0
  movi v0.16b, 1
  movi v1.16b, 2

(fused SUBS/B.cc loop)

100 unrolls and 100 iterations

Result (median cycles for code): 2.0037

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)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)accfd5map dispatch bubble (d6)ddfetch restart (de)e0eb? simd retires (ee)? int retires (ef)f5f6f7f8fd
1020420037150072619686251010010010000100100005002847521200182003720037184213187451010020010000200100002003720037111020110099100100100001000381271011611197910100001002003820038200382003820038
1020420037150061196862510100100100001001000050028475212001820037200371842131874510100200100002001000020037200371110201100991001001000010002371011611197910100001002003820038200382003820038
1020420037149061196862510100100100001001000050028475212001820037200371842131874510100200100002001000020037200371110201100991001001000010000371011611197910100001002003820038200382003820038
1020420037150061196862510100100100001001000050028475212001820037200371842131874510100200100002001000020037200371110201100991001001000010000071011611197910100001002003820038200382003820038
1020420037150061196752510100100100001001000050028475212001820037200371842131874510100200100002001000020037200371110201100991001001000010002071011611197910100001002003820038200382003820038
1020420037150061196862510100100100001001000050028475212001820037200371842131874510100200100002001000020037200371110201100991001001000010003371011611197910100001002003820038200382003820038
10204200371500103196862510100100100001001000050028475212001820037200371842131874510100200100002001000020084200371110201100991001001000010003071011611197910100001002003820038200382003820038
1020420037150061196862510100100100001001000050028475212001820037200371842131874510100200100002001000020037200371110201100991001001000010002371011611197910100001002003820038200382003820038
1020420037150061196862510100100100001001000050028475212001820037200371842131874510100200100002001000020037200371110201100991001001000010000371011611197910100001002003820038200382003820038
10204200371500892196862510100100100001001000050028475212001820037200371842131874510100200100002001000020037200371110201100991001001000010000071011611197910100001002003820038200382003820038

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0037

retire uop (01)cycle (02)030f1e3f4e51schedule 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 cache writeback (a8)accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
100242003715020611968625100101010000101000050284752112001820037200371844331876710010201000020100002003720037111002110910101000010000640216221978610000102003820038200382003820038
100242003715000611968625100101010000101000050284752102001820037200371844331876710010201000020100002003720037111002110910101000010000640216221978610000102003820038200382003820038
100242003715000611968625100101010000101000050284752102001820037200371844331876710010201000020100002003720037111002110910101000010000640216221978610000102003820038200382003820038
100242003715000611968625100101010000101000050284752102001820037200371844331876710010201000020100002003720037111002110910101000010000640216221978610000102003820038200382003820038
100242003714900611968625100101010000101000050284752112001820037200371844331876710010201000020100002003720037111002110910101000010000640216221978610000102003820038200382003820038
1002420037150007091968625100101010000101000050284752102001820037200371844331876710010201000020100002003720037111002110910101000010000640216221978610000102003820038200382003820038
100242003715000611968625100101010000101000050284752102001820037200371844331876710010201000020100002003720037111002110910101000010000640216221978610000102003820038200382003820038
100242003715000611968625100101010000101000050284752102001820037200371844331876710010201000020100002003720037111002110910101000010000640216221978610000102003820038200382003820038
100242003715000611968625100101010000101000050284752102001820037200371844331876710010201000020100002003720037111002110910101000010000640216221978610000102003820038200382003820038
100242003715000661968625100101010000101000050284752102001820037200371844331876710010201000020100002003720037111002110910101000010000640216221978610000102003820038200382003820038

Test 3: throughput

Count: 8

Code:

  fcmle v0.2d, v8.2d, #0
  fcmle v1.2d, v8.2d, #0
  fcmle v2.2d, v8.2d, #0
  fcmle v3.2d, v8.2d, #0
  fcmle v4.2d, v8.2d, #0
  fcmle v5.2d, v8.2d, #0
  fcmle v6.2d, v8.2d, #0
  fcmle v7.2d, v8.2d, #0
  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)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)st unit uop (a7)l1d cache writeback (a8)acbranch cond mispred nonspec (c5)branch mispred nonspec (cb)cdcfmap dispatch bubble (d6)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
80204200591500029258010810080008100800205006401321200192003820038997769989801202008003220080032200382003811802011009910010080000100000011151181620035800001002003920039200392003920039
80204200381500029258010810080008100800205006401321200192003820038997769989801202008003220080032200382003811802011009910010080000100000011151181620035800001002003920039200392003920039
80204200381500329258010810080008100800205006401320200192003820038997769989801202008003220080032200382003811802011009910010080000100000011151181620035800001002003920039200392003920039
80204200381500029258010810080008100800205006401320200192003820038997769989801202008003220080032200382003811802011009910010080000100000011151181620035800001002003920039200392003920039
80204200381500029258010810080008100800205006401321200192003820038997769989801202008003220080032200382003811802011009910010080000100001011151181620035800001002003920039200392003920039
80204200381500029258010810080008100800205006401321200192003820038997769989801202008003220080032200382003811802011009910010080000100000011151181620035800001002003920039200392003920039
80204200381500029258010810080008100800205006401321200192003820038997769989801202008003220080032200382003811802011009910010080000100200011151181620035800001002003920039200392003920039
80204200381500029258010810080008100800205006401321200192003820038997769989801202008003220080032200382003811802011009910010080000100000011151181620035800001002003920039200392003920039
80204200381490029258010810080008100800205006401321200192003820038997769989801202008003220080032200382003811802011009910010080000100000011151181620035800001002003920039200392003920039
80204200381500029258010810080008100800205006401321200192003820038997769989801202008003220080032200382003811802011009910010080000100000011151181620035800001002003920039200392003920039

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)0318191e1f3f51schedule 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)cfd5map dispatch bubble (d6)ddfetch restart (de)e0ea? simd retires (ee)? int retires (ef)f5f6f7f8fd
80024200391500000392580010108000010800005064000002001920038200389996310018800102080000208000020038200381180021109101080000100000502071696200357380000102003920039200392003920039
80024200381500000392580010108000010800005064000012001920038200389996310018800102080000208000020038200381180021109101080000100000502091679200357380000102003920039200392003920039
800242003815000003925800101080000108000050640000020019200382003899963100188001020800002080000200382003811800211091010800001000305020101696200357380000102003920039200392003920039
80024200381500000392580010108000010800005064000012001920038200389996310018800102080000208000020038200381180021109101080000100000502071699200358880000102003920039200392003920039
80024200381500000392580010108000010800005064000002001920038200389996310018800102080000208000020038200381180021109101080000100000502071679200357380000102003920039200392003920039
80024200381500000392580010108000010800005064000012001920038200389996310018800102080000208000020038200381180021109101080000100100502010161111200357380000102003920039200392003920039
800242003815000003925800101080000108000050640000120019200382003899963100188001020800002080000200382003811800211091010800001000005020111699200358980000102003920039200392003920039
80024200381500000392580010108000010800005064000012001920038200389996310018800102080000208000020038200381180021109101080000100000502091696200358880000102003920039200392003920039
80024200381500000392580010108000010800005064000002001920038200389996310018800102080000208000020038200381180021109101080000100000502091669200358880000102003920039200392003920039
8002420038150000039258001010800001080000506400001200192003820038999631001880010208000020800002003820038118002110910108000010000050201116117200357380000102003920039200392003920039