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

FCMGE (vector, zero, 2S)

Test 1: uops

Code:

  fcmge v0.2s, v0.2s, #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)03191e3f4e51schedule 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)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
10042037150061168625100010001000264521020182037203715713189510001000100020372037111001100073116111786100020382038203820382038
10042037150061168625100010001000264521020182037203715713189510001000100020372037111001100073116111786100020382038203820382038
10042037150061168625100010001000264521020182037203715713189510001000100020372037111001100073116111786100020382038203820382038
100420371504861168625100010001000264521020182037203715713189510001000100020372037111001100073116111786100020382038203820382038
10042037160061168625100010001000264521020182037203715713189510001000100020372037111001100073116111786100020382038203820382038
10042037150061168625100010001000264521020182037203715713189510001000100020372037111001100073116111786100020382038203820382038
100420371504861168625100010001000264521020182037203715713189510001000100020372037111001100073116111786100020382038203820382038
10042037160061168625100010001000264521020182037203715713189510001000100020372037111001100073116111786100020382038203820382038
100420371502161168625100010001000264521020182037203715713189510001000100020372037111001100073216111786100020382038203820382038
10042037160061168625100010001000264521020182037203715713189510001000100020372037111001100073116111786100020382038203820382038

Test 2: Latency 1->2

Code:

  fcmge v0.2s, v0.2s, #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)03l2 tlb miss data (0b)1e3a3f4e51schedule 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)acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
1020420037150000611968625101001001000010010000500284752120018200372003718421318745101002001000020010000200372003711102011009910010010000100000071011611197910100001002003820038200382003820038
10204200371500180611968625101001001000010010000500284752120018200372003718421318745101002001000020010000200372003711102011009910010010000100000071011611197910100001002003820038200382003820038
1020420037150000611968625101001001000010010000500284752120018200372003718421318745101002001000020010000200372003711102011009910010010000100003071011611197910100001002003820038200382003820038
102042003715000061196862510100100100001001000050028475212001820037200371842131874510100200100002001000020037200371110201100991001001000010000126071011611197910100001002003820038200382003820038
1020420037150000611968625101001001000010010000500284752120018200372003718421318745101002001000020010000200372003711102011009910010010000100000071011611197910100001002003820038200382003820038
1020420037150000611968625101001001000010010000500284752120018200372003718421318745101002001000020010000200372003711102011009910010010000100010071011611197910100001002003820038200382003820038
1020420037149000611968625101001001000010010000500284752120018200372003718421318745101002001000020010000200372008411102011009910010010000100000071011611197912100001002003820038200382003820038
10204200371500004411968625101001001000010010000500284752120018200372003718421318745101002001000020010000200372003711102011009910010010000100050071011611197910100001002003820038200382003820038
10204200371500006119686251010010010000100100005002847521200182003720037184213187451010020010000200100002003720037111020110099100100100001000570071011611197910100001002003820038200382003820038
10204200371500002321968625101001001000010010000500284752120018200372003718421318745101002001000020010000200372003711102011009910010010000100000071011611197910100001002003820038200382003820038

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0037

retire uop (01)cycle (02)033f4e51schedule 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? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
10024200371505241968625100101010000101000050284752102001820037200371844331876710010201000020100002003720037111002110910101000010006402162219786010000102003820038200382003820038
10024200371491241968625100101010000101000050284752112001820037200371844331876710010201000020100002003720037111002110910101000010006402162219786010000102003820038200382003820038
10024200371501261968644100101010000101000050284752102001820037200371844331876710010201000020100002003720037111002110910101000010006402162219786010000102003820038200382003820038
10024200371501661968625100101010000101000050284752102001820037200371844331876710010201000020100002003720037111002110910101000010006402162219786010000102003820038200382003820085
10024200371501241968625100101010000101000050284752112001820037200371844331876710010201000020100002003720037111002110910101000010006402162219786010000102003820038200382003820038
10024200371501491968625100101010000101000050284752112001820037200371844331876710010201000020100002003720084111002110910101000010006402162219786010000102003820038200382003820038
1002420037150611968625100101010000101000050284752112001820037200371844331876710010201000020100002003720037111002110910101000010006402162219786010000102003820038200382003820038
10024200371501031968625100101010000101000050284752112001820037200371844331876710010201000020100002003720037111002110910101000010006402162219786010000102003820038200382003820038
10024200371491451968625100101010000101000050284752112001820037200371844331876710010201000020100002003720037111002110910101000010006402162219786010000102003820038200382003820038
10024200371501031968625100101010000101000050284752112001820037200371844331876710010201000020100002003720037111002110910101000010006402162219786010000102003820038200382003820038

Test 3: throughput

Count: 8

Code:

  fcmge v0.2s, v8.2s, #0
  fcmge v1.2s, v8.2s, #0
  fcmge v2.2s, v8.2s, #0
  fcmge v3.2s, v8.2s, #0
  fcmge v4.2s, v8.2s, #0
  fcmge v5.2s, v8.2s, #0
  fcmge v6.2s, v8.2s, #0
  fcmge v7.2s, v8.2s, #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)03l2 tlb miss data (0b)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 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
802042005915000292580108100800081008002050064013202001920038200389977699898012020080032200800322003820038118020110099100100800001000011151184162320035800001002003920039200392003920039
802042003815000292580108100800081008002050064013202001920038200389977699898012020080032200800322003820038118020110099100100800001000311151183163320035800001002003920039200392003920039
802042003815000292580108100800081008002050064013202001920038200389977699898012020080032200800322003820038118020110099100100800001000011151183162220035800001002003920039200392003920039
8020420038150002192580108100800081008011250064013202001920038200389977699898012020080032200800322003820038118020110099100100800001000011151183162220081800001002003920039200392003920039
802042003815000522580108100800081008002050064013202001920038200389977699898012020080032200800322003820038118020110099100100800001000011151184164420035800001002003920039200392003920039
802042003815000292580108100800081008002050064013202001920038200389977699898012020080032200800322003820038118020110099100100800001000011151184163420035800001002003920039200392003920039
802042003815000292580108100800081008002050064013202001920038200389977699898012020080032200800322003820038118020110099100100800001000011151183163320035800001002003920039200392003920039
802042003815000292580108100800081008002050064013202001920038200389977699898012020080032200800322003820038118020110099100100800001000011151182163220035800001002003920039200392003920039
802042003815000292580108100800081008002050064013212001920038200389977699898012020080032200800322003820038118020110099100100800001000011151184163420153800001002003920039200392003920039
802042003815000292580108100800081008002050064013202001920038200389977699898012020080032200800322003820038118020110099100100800001000011151184162220035800001002003920039200392003920039

1000 unrolls and 10 iterations

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

retire uop (01)cycle (02)03191e3f51schedule 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)6061696d6emap 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)cfd0d2d5map dispatch bubble (d6)daddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
800242005114906392580010108000010800005064000000200192003820038999631001880010208000020800002003820038118002110910108000010050200011260332003580000102003920039200392003920039
80024200381500039258001010800001080000506407600020019200382003899963100188001020800002080000200382003811800211091010800001005020523160732003580000102003920039200392003920039
800242003815001539258001010800001080000506400000020019200382003899963100188001020800002080000200382003811800211091010800001005020523160742003580000102003920039200392003920039
8002420038150038439258001010800001080000506400000020019200382003899963100188001020800002080000200382003811800211091010800001005020523160372003580000102003920039200392003920039
800242003815002439258001010800001080000506400001520019200382003899963100188001020800002080000200382003811800211091010800001005020023160332003580000102003920039200392003920039
800242003815002439258001010800001080000506400000020019200382003899963100188001020800002080000200382003811800211091010800001005020503160732003580000102003920039200392003920039
80024200381500039258001010800001080000506400001520019200382003899963100188001020800002080000200382003811800211091010800001015020003160372003580000102003920039200392003920039
800242003815001839258001010800001080000506400000020019200382003899963100188001020800002080000200382003811800211091010800001005020003160772003580000102003920039200392003920039
800242003815003339258001010800001080000506400001520019200382003899963100188001020800002080000200382003811800211091010800001005020533160332003580000102003920039200392003920039
80024200381500039258001010800001080000506400001520019200382003899963100188001020800002080000200382003811800211091010800001005020003160332003580000102003920039200392003920039