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

FCMEQ (vector, 4H)

Test 1: uops

Code:

  fcmeq v0.4h, v0.4h, v1.4h
  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)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)l1d cache writeback (a8)a9acc2cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)f5f6f7f8fd
100420371500000061168725100010001000264680020182037203715723189510001000200020372037111001100000000073216111787100020382038203820382038
100420371500000061168725100010001000264680020182037203715723189510001000200020372037111001100000000073116111787100020382038203820382038
100420371500000061168725100010001000264680020182037203715723189510001000200020372037111001100000000073116111787100020382038203820382038
100420371500000061168725100010001000264680020182037203715723189510001000200020372037111001100000000073116111787100020382038203820382038
100420371500000061168725100010001000264680020182037203715723189510001000200020372037111001100000000073116111787100020382038203820382038
100420371500000061168725100010001000264680020182037203715723189510001000200020372037111001100002000073116111787100020382038203820382038
100420371500000061168725100010001000264680020182037203715723189510001000200020372037111001100000000073116111787100020382038203820382038
1004203715000000103168725100010001000264680020182037203715723189510001000200020372037111001100000000073116111787100020382038203820382038
100420371500006061168725100010001000264680020182037203715723189510001000200020372037111001100000000073116111787100020382038203820382038
100420371500000061168725100010001000264680020182037203715723189510001000200020372037111001100000000073116111787100020382038203820382038

Test 2: Latency 1->2

Code:

  fcmeq v0.4h, v0.4h, v1.4h
  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)03mmu table walk data (08)1e1f3f4e51schedule 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)9facbranch mispred nonspec (cb)cfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
10204200371500006119687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100007101161119791100001002003820038200382003820038
10204200371550006119687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100007101161119791100001002003820038200382003820038
10204200371500006119687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100007101161119791100001002003820038200382003820038
10204200371500006119687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100007101161119791100001002003820038200382003820038
10204200371500006119687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100007421161119791100001002003820038200382003820038
102042003715000886119687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100007101161119791100001002003820038200382003820038
102042003715000044119687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100007101161119791100001002003820038200382003820038
102042003715002406119687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100007101161119791100001002003820038200382008520038
10204200371500006119687251010010010000100100005002850246120018200372003718422318745101002001000020020000200372003711102011009910010010000100007101161119791100001002003820038200382003820038
10204200371500006119687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100007101161119791100001002003820038200382003820038

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0037

retire uop (01)cycle (02)0318191e1f203f4e51schedule 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)a9accfd5map dispatch bubble (d6)ddfetch restart (de)e0? int output thing (e9)? simd retires (ee)? int retires (ef)f5f6f7f8fd
1002420037150000006119687251001010100001010000502847680120018200372003718444318767100102010000202000020037200371110021109101010000100006403163319785010000102003820038200382003820038
1002420037150000006119687251001010100001010000502847680120018200372003718444318767100102010000202000020037200371110021109101010000100006403163319785010000102003820038200382003820038
1002420037150000006119687251001010100001010000502847680120018200372003718444318767100102010000202000020037200371110021109101010000100006403163319785010000102003820038200382003820038
1002420037150000006119687251001010100001010000502847680120018200372003718444318767100102010000202000020037200371110021109101010000100006403163319785010000102003820038200382003820038
1002420037150000006119687791001010100001010000502847680120018200372003718444318767100102010000202000020037200371110021109101010000100006403163319785010000102003820038200382003820038
1002420037150000006119687251001010100001010000502847680120018200372003718444318793100102010000202000020037200371110021109101010000101006403163319785010000102003820038200382003820038
1002420037150000006119687251001010100001010000502847680120018200372003718444318767100102010000202000020037200371110021109101010000100006403163319785010000102003820038200382003820038
10024200371500000210319687251001010100001010000502847680120018200372003718444318767100102010000202000020037200371110021109101010000100006403163319785010000102003820038200382003820038
1002420037150000006119687251001010100001010000502847680120018200372003718444318767100102010000202000020037200371110021109101010000100006403163319785010000102003820038200382003820038
1002420037150000006119687251001010100001010000502847680120018200372003718444318767100102010000202000020037200371110021109101010000100406403163319785010000102003820038200382003820038

Test 3: Latency 1->3

Code:

  fcmeq v0.4h, v1.4h, v0.4h
  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)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)a9acbranch cond mispred nonspec (c5)cdcfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
102042003715006119687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100000007101161219791100001002003820038200382003820038
1020420037158072719687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100000007101161119791100001002003820038200382003820038
102042003715006119687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100000007101161119791100001002003820038200382003820038
10204200371500611968725101001001000010010000500284768012001820216202301842231874510100200100002002000020037200371110201100991001001000010000129007101161119791100001002003820038200382003820038
10204200371500611968725101001001000010010000500284768012001820037200371842231874510100200100002002000020037200371110201100991001001000010000183007101161119791100001002003820038200382003820038
102042003715006119687251010010010000100100005002847680020018200372003718422318745101002001000020020000200372003711102011009910010010000100002015027101161119791100001002003820038200382003820038
1020420037150053619687251010010010000100100005002847680020018200372003718422318745101002001000020020000200372003711102011009910010010000100000007101161119791100001002003820038200382003820038
102042003715008219687251010010010000100100005002847680020018200372003718422318745101002001000020020000200372003711102011009910010010000100000007101161119791100001002003820038200382003820038
102042003715006119687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100000007101161119791100001002003820038200382003820038
102042003715006119687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100000007101161119791100001002003820038200382003820038

1000 unrolls and 10 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)60696d6emap stall dispatch (70)simd prf full (72)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
100242003715508219687251001010100001010000502847680020018200372003718444031876710010201000020200002003720037111002110910101000010006402162219785010000102003820038200382003820038
100242003715006119687251001010100001010000502847680020018200372003718444031876710010201000020200002003720037111002110910101000010006402162219785010000102003820038200382003820038
100242003715006119687251001010100001010000502847680120018200372003718444031876710010201000020200002003720037111002110910101000010136402162219785010000102003820038200382003820038
100242003715006119687251001010100001010000502847680020018200372003718444031876710010201000020200002003720037111002110910101000010006402162219785010000102003820038200382003820038
1002420037150012419687251001010100001010000502847680020018200372003718444031876710010201000020200002003720037111002110910101000010106402162219785010000102003820038200382003820038
100242003715006119687251001010100001010000502847680120018200372003718444031876710010201000020200002003720037111002110910101000010006402162219785010000102003820038200382003820038
100242003715006119687251001010100001010000502847680120018200372003718444031876710010201000020200002003720037111002110910101000010106402162219785010000102003820038200382003820038
1002420037150052919687251001010100001010150502847680020018200372003718444031876710010201000020200002003720037111002110910101000010006402162219785010000102003820038200382003820038
100242003715008419687251001010100001010000502847680020018200372003718444031876710010201000020200002003720037111002110910101000010006402162219785010000102003820038200382003820038
1002420037150036919687251001010100001010000502847680120018200372003718444031876710010201000020200002003720037111002110910101000010006402162219785010000102003820038200382003820038

Test 4: throughput

Count: 8

Code:

  fcmeq v0.4h, v8.4h, v9.4h
  fcmeq v1.4h, v8.4h, v9.4h
  fcmeq v2.4h, v8.4h, v9.4h
  fcmeq v3.4h, v8.4h, v9.4h
  fcmeq v4.4h, v8.4h, v9.4h
  fcmeq v5.4h, v8.4h, v9.4h
  fcmeq v6.4h, v8.4h, v9.4h
  fcmeq v7.4h, v8.4h, v9.4h
  movi v8.16b, 9
  movi v9.16b, 10

(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)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)inst branch cond (94)inst int alu (97)inst simd alu (9a)9fl1d cache writeback (a8)a9accfd5map dispatch bubble (d6)ddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
8020420058151040258010010080000100800005006400001200192003820038997339996801002008000020016000020038200381180201100991001008000010010351102161120035800001002003920039200392003920039
8020420038150082258010010080000100800005006400001200192003820038997339996801002008000020016000020038200381180201100991001008000010000051102161120035800001002003920039200392003920039
80204200381500124258010010080000100800005006400001200192003820038997339996801002008000020016000020038200381180201100991001008000010000051101161120035800001002003920039200392003920039
8020420038150040258010010080000100800005006400001200192003820038997339996801002008000020016000020038200381180201100991001008000010000051101161120035800001002003920039200392003920039
8020420038150040258010010080000100800005006400001200192003820038997339996801002008000020016000020038200381180201100991001008000010010351101161120035800001002003920039200392003920039
80204200381500189258010010080000100800005006400001200192003820038997339996801002008000020016000020038200381180201100991001008000010000351101161120035800001002003920039200392003920039
8020420038150040258010010080000100800005006400001200192003820038997339996801002008000020016000020038200381180201100991001008000010000051101161120035800001002003920039200392003920039
8020420038150040258010010080000100800005006400001200192003820038997339996801002008000020016000020038200381180201100991001008000010000051101161120035800001002003920039200392003920039
8020420038150040258010010080000100800005006400001200192003820038997339996801002008000020016000020038200381180201100991001008000010000051101161120035800001002003920039200392003920039
80204200381500211258010010080000100800005006400001200192003820038997339996801002008000020016000020038200381180201100991001008000010000051101161120035800001002003920039200392003920039

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)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)5f696d6emap stall dispatch (70)simd prf full (72)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)a9acc2cfd5map dispatch bubble (d6)dadbddfetch restart (de)e0? simd retires (ee)? int retires (ef)f5f6f7f8fd
80024200391500000622580010108000010800005064000002001920038200389996031001880010208000020160000200382003811800211091010800001000000502031650112003580000102003920039200392003920039
80024200381500000392580010108000010800005064000002001920038200389996031001880010208000020160000200382003811800211091010800001000000502011650112003580000102003920039200392003920039
80024200381500000392580088108000010800005064000002001920038200389996031001880010208000020160000200382003811800211091010800001000000502011650112003580000102003920039200392003920039
80024200381500000392580010108000010800005064000002001920038200389996031001880010208000020160000200382003811800211091010800001000000502011651212003580000102003920039200392003920039
80024200381500000812580010108000010800005064000002001920038200389996031001880010208000020160000200382003811800211091010800001000000502011650222003580000102003920039200392003920039
80024200381490000812580010108000010800005064000012001920038200389996031001880010208000020160000200382003811800211091010800001000000502011650112003580000102003920039200392003920039
80024200381500000392580010108000010800005064000002001920038200389996031001880010208000020160000200382003811800211091010800001000000502011652112003580000102003920039200392003920039
80024200381500000392580010108000010800005064000002001920038200389996031001880010208000020160000200382003811800211091010800001000000502011650112003580000102003920039200392003920039
80024200381500000392580010108000010800005064000002001920038200389996031001880010208000020160000200382003811800211091010800001000000502011650112003580000102003920039200392003920039
80024200381500000392580010108000010800005064000002001920038200389996031001880010208000020160000200382003811800211091010800001000000502011650212003580000102003920039200392003920039