Apple M1 Microarchitecture Research by Dougall Johnson

Firestorm: Overview | Base Instructions | SIMD and FP Instructions
Icestorm:  Overview | Base Instructions | SIMD and FP Instructions

UZP2 (vector, 2D)

Test 1: uops

Code:

  uzp2 v0.2d, v0.2d, v1.2d
  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 (01)cycle (02)0318191e3f4e51inst issue (52)~issue fp/simd (54)~dispatch fp/simd (57)huge thing fp/simd (5b)60696d6edispatch stall (70)scheduler rewind (75)scheduler stall (76)~dispatch op (78)~map op fp/simd (7e)~map lookup fp/simd (81)8283pipeline redirect (84)85inst all (8c)inst neon or fp (9a)a8a9accfd5d6ddinst fetch restart (de)e0? fp/simd (ee)f5f6f7f8fd
100420371600061168725100010001000264680120182037203715723189510001000200020372037111001100010073116111787100020382038203820382038
100420371500061168725100010001000264680120182037203715723189510001000200020372037111001100000073116111787100020382038203820382038
1004203716001261168725100010001000264680120182037203715723189510001000200020372037111001100000073116111787100020382038203820382038
100420371600082168725100010001000264680120182037203715723189510001000200020372037111001100000073117111787100020382038203820382038
1004203716000128168725100010001000264680120182037203715723189510001000200020372037111001100000073116111787100020382038203820382038
100420371600061168725100010001000264680120182037203715723189510001000200020372037111001100000073116111787100020382038203820382038
100420371600061168725100010001000264680120182037203715723189510001000200020372037111001100010073116111787100020382038203820382038
100420371600061168725100010001000264680120182037203715723189510001000200020372037111001100000073116111787100020382038203820382038
100420371600061168725100010001000264680120182037203715723189510001000200020372037111001100000073116121787100020382038203820382038
100420371600061168725100010001000264680120182037203715723189510001000200020372037111001100000073116111787100020382038203820382038

Test 2: Latency 1->2

Code:

  uzp2 v0.2d, v0.2d, v1.2d
  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 (01)cycle (02)031e1f3f4e51inst issue (52)~issue int (53)~issue fp/simd (54)~dispatch int (56)~dispatch fp/simd (57)huge thing int (59)huge thing fp/simd (5b)60696d6edispatch stall (70)scheduler rewind (75)scheduler stall (76)~dispatch op (78)~map op int (7c)~map op fp/simd (7e)~map lookup int (7f)~map lookup fp/simd (81)8283pipeline redirect (84)85inst all (8c)inst branch (8d)inst branch taken (90)inst b.cc (94)inst integer (97)inst neon or fp (9a)9fa0a8accfd5d6ddinst fetch restart (de)e0? int output thing (e9)? fp/simd (ee)gpr retires (ef)f5f6f7f8fd
1020420037155120611968725101001001000010010000500284768012001820037200371842231874510100200100002002000020037200371110201100991001001000010000071021622197910100001002003820038200382003820038
102042003715500611968725101001001000010010000500284768002001820037200371842231874510100200100002002000020037200371110201100991001001000010000071021622197910100001002003820038200382003820038
102042003715500611968725101001001000010010000500284768002001820037200371842231874510100200100002002000020037200371110201100991001001000010000371021622197910100001002003820038200382003820038
102042003715500611968725101001001000010010000500284768012001820037200371842231874510100200100002002000020037200371110201100991001001000010000071021622197910100001002003820038200382003820038
102042003715500611968725101001001000010010000500284768002001820037200371842231874510100200100002002000020037200371110201100991001001000010000071021622197910100001002003820038200382003820038
102042003715500611968725101001001000010010000500284768002001820037200371842231874510100200100002002000020037200371110201100991001001000010001071021622197910100001002003820038200382003820038
102042003715500611968725101001001000010010000500284768002001820037200371842231874510100200100002002000020037200371110201100991001001000010001071021622197910100001002003820038200382003820038
102042003715500611968725101001001000010010000500284768002001820037200371842231874510100200100002002000020037200371110201100991001001000010000071021622197910100001002003820038200382003820038
102042003715500611968725101001001000010010000500284768002001820037200371842231874510100200100002002000020037200371110201100991001001000010000071021622197910100001002003820038200382003820038
102042003715500611968725101001001000010010000500284768002001820037200371842231874510100200100002002000020037200371110201100991001001000010004071021622197910100001002003820038200382003820038

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0037

retire (01)cycle (02)030b1e3f4e51inst issue (52)~issue int (53)~issue fp/simd (54)~dispatch int (56)~dispatch fp/simd (57)huge thing int (59)huge thing fp/simd (5b)6061696d6edispatch stall (70)scheduler rewind (75)scheduler stall (76)~dispatch op (78)~map op int (7c)~map op fp/simd (7e)~map lookup int (7f)~map lookup fp/simd (81)8283pipeline redirect (84)85inst all (8c)inst branch (8d)inst branch taken (90)inst b.cc (94)inst integer (97)inst neon or fp (9a)9fa8acbranch mispredict (cb)cdcfd0d5d6ddinst fetch restart (de)e0? fp/simd (ee)gpr retires (ef)f5f6f7f8fd
10024200371610011151968725100101010000101000050284768000200182003720037184333187671001020100002020000200372003711100211091010100001000006400216221978510000102003820038200382003820038
100242003716100611968725100101010000101000050284768000200182003720037184443187671001020100002020000200372003711100211091010100001000006400216221978510000102003820038200382003820038
100242003715500611968725100101010000101000050284768000200182003720037184443187671001020100002020000200372003711100211091010100001000006400216221978510000102003820038200382003820038
100242003715600611968725100101010000101000050284768000200182003720037184443187671001020100002020000200372003711100211091010100001000006400216221978510000102003820038200382003820038
100242003715500611968725100101010000101000050284768000200182003720037184443187671001020100002020000200372003711100211091010100001000006400216221978510000102003820038200382003820038
100242003715500611968725100101010000101000050284768000200182003720037184443187671001020100002020000200372003711100211091010100001000006400216221978510000102003820038200382003820038
100242003715500611968725100101010000101000050284768000200182003720037184443187671001020100002020000200372003711100211091010100001000006400216221978510000102003820038200382003820038
100242003715500611968725100101010000101000050284768000200182003720037184443187671001020100002020000200372003711100211091010100001000006400216221978510000102003820038200382003820038
100242003715000611968725100101010000101000050284768000200182003720037184443187671001020100002020000200372003711100211091010100001000006400216221978510000102003820038200382003820038
100242003715000611968725100101010000101000050284768000200182003720037184443187671001020100002020000200372003711100211091010100001000006400216221978510000102003820038200382003820038

Test 3: Latency 1->3

Code:

  uzp2 v0.2d, v1.2d, v0.2d
  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 (01)cycle (02)0308090b18191e1f3f4e51inst issue (52)~issue int (53)~issue fp/simd (54)~dispatch int (56)~dispatch fp/simd (57)huge thing int (59)huge thing fp/simd (5b)60696d6edispatch stall (70)scheduler rewind (75)scheduler stall (76)~dispatch op (78)~map op int (7c)~map op fp/simd (7e)~map lookup int (7f)~map lookup fp/simd (81)8283pipeline redirect (84)85inst all (8c)inst branch (8d)inst branch taken (90)91inst b.cc (94)inst integer (97)inst neon or fp (9a)9fa1a8acc2cfd5d6ddinst fetch restart (de)e0? int output thing (e9)? fp/simd (ee)gpr retires (ef)f5f6f7f8fd
102042003715600000150611968725101001001000010010000500284768002001820037200371842231874510100200100002002000020037200371110201100992002110010010000100000071041611197910100001002003820038200382003820038
1020420037156000000061196872510100100100001001000050028476800200182003720037184223187451010020010000200200002003720037111020110099010010010000100000071011611197910100001002003820038200382003820038
1020420037155000000061196872510100100100001001000050028476800200222003720037184223187451010020010000200200002003720037111020110099010010010000100000071011611197910100001002003820038200382003820038
10204200371550000024061196872510100100100001001000050028476800200182003720037184223187451010020010000200200002003720037111020110099010010010000100000071011611197910100001002003820038200382003820038
1020420037155000000061196872510100100100001001000050028476801200182003720037184223187451010020010000200200002003720037111020110099010010010000100000071011611197910100001002003820038200382003820038
1020420037155000000061196872510100100100001001000050028476801200182003720037184223187451010020010000200200002003720037111020110099010010010000100000071011611197910100001002003820038200382003820038
10204200371550000090631196872510100100100001001000050028476801200182003720037184223187451010020010000200200002003720037111020110099010010010000100000071011611197910100001002003820038200382003820038
1020420037155000000061196872510100100100001001000050028476801200182003720037184223187451010020010000200200002003720037111020110099010010010000100000071011611197910100001002003820038200382003820038
1020420037155000000061196872510100100100001001000050028476801200182003720037184223187451010020010000200200002003720037111020110099010010010000100000071011611197910100001002003820038200382003820038
102042003715600000159061196872510100100100001001000050028476801200182003720037184223187451010020010000200200002003720037111020110099010010010000100003071011611197910100001002003820038200382003820038

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0037

retire (01)cycle (02)030708090a0b18191e1f3f4e51inst issue (52)~issue int (53)~issue fp/simd (54)~dispatch int (56)~dispatch fp/simd (57)huge thing int (59)huge thing fp/simd (5b)60696d6edispatch stall (70)scheduler rewind (75)scheduler stall (76)~dispatch op (78)~map op int (7c)~map op fp/simd (7e)~map lookup int (7f)~map lookup fp/simd (81)8283pipeline redirect (84)85inst all (8c)inst branch (8d)inst branch taken (90)inst b.cc (94)inst integer (97)inst neon or fp (9a)9fa0a1a6a8a9acc2cfd5d6ddinst fetch restart (de)e0? int output thing (e9)? fp/simd (ee)gpr retires (ef)f5f6f7f8fd
100242003715500000000061196872510010101000010100005028476800200182003720037184443187671001020100002020000200372003711100211091010100001000000006403162219785010000102003820038200382003820038
100242003715500000000061196872510010101000010100005028476800200182003720037184443187671001020100002020000200372003711100211091010100001000000006402162219785010000102003820038200382003820038
100242003715500000000061196872510010101000010100005028476800200182003720037184443187671001020100002020000200372003711100211091010100001000000006402242219785010000102003820038200382003820038
100242003715500000000061196872510010101000010100005028476800200182003720037184443187671001020100002020000200372003711100211091010100001000002006404162219785010000102003820038200382003820038
100242003715500000000061196872510010101000010100005028476800200182003720037184443187671001020100002020000200372003711100211091010100001000010306402162219785010000102003820038200382003820038
100242003715500000000061196872510010101000010100005028476800200182003720037184443187671001020100002020000200372003711100211091010100001000000306402162219785010000102003820038200382003820038
100242003715600000000061196872510010101000010100005028476800200182003720037184443187671001020100002020000200372003711100211091010100001000000006402162219785010000102003820038200382003820038
100242003715500000000061196872510010101000010100005028476800200182003720037184443187671001020100002020000200372003711100211091010100001000000006402162219785010000102003820038200382003820038
1002420037155000000000636196872510010101000010100005028476800200182003720037184443187671001020100002020000200372003711100211091010100001000000206126402162219785010000102003820038200382003820038
10024200371550000000120548196872510010101002410100007128476800200182003720037184443187671001020100002020000200372003711100211091010100001000000006402162219785010000102003820038200382003820038

Test 4: throughput

Count: 8

Code:

  uzp2 v0.2d, v8.2d, v9.2d
  uzp2 v1.2d, v8.2d, v9.2d
  uzp2 v2.2d, v8.2d, v9.2d
  uzp2 v3.2d, v8.2d, v9.2d
  uzp2 v4.2d, v8.2d, v9.2d
  uzp2 v5.2d, v8.2d, v9.2d
  uzp2 v6.2d, v8.2d, v9.2d
  uzp2 v7.2d, v8.2d, v9.2d
  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 (01)cycle (02)03083f51inst issue (52)~issue int (53)~issue fp/simd (54)~dispatch int (56)~dispatch fp/simd (57)huge thing int (59)huge thing fp/simd (5b)60696d6edispatch stall (70)scheduler rewind (75)scheduler stall (76)~dispatch op (78)~map op int (7c)~map op fp/simd (7e)~map lookup int (7f)~map lookup fp/simd (81)8283pipeline redirect (84)85inst all (8c)inst branch (8d)inst branch taken (90)inst b.cc (94)inst integer (97)inst neon or fp (9a)9fa0a1a6a8a9acc5branch mispredict (cb)cdcfd5d6ddinst fetch restart (de)e0? fp/simd (ee)gpr retires (ef)f5f6f7f8fd
8020420038150040258010010080000100800005006400000200192003820038997339996801002008000020016000020038200381180201100991001008000010000000000051102161120035800001002003920039200392003920039
8020420038150040258010010080000100800005006400000200192003820038997339996801002008000020016000020038200381180201100991001008000010000030000051101161120035800001002003920039200392003920039
8020420038150140258010010080000100800005006400000200192003820038997339996801002008000020016000020038200381180201100991001008000010000000000051101161120035800001002003920039200392003920039
8020420038150040258010010080000100800005006400000200192003820038997339996801002008000020016000020038200381180201100991001008000010000000000051101161120035800001002003920039200392003920039
802042003815007052580100100800001008000050064000002001920038200389973399968010020080000200160000200382003811802011009910010080000100000270300051101161120035800001002003920039200392003920039
8020420038150040258010010080000100800005006400000200192008820038997339996801002008000020016000020038200381180201100991001008000010000000000051101161120035800001002003920039200392003920039
80204200381500334258010010080000100800005006400000200192008720038997339996801002008000020016000020038200381180201100991001008000010000000000051101161120035800001002003920039200392003920039
8020420038150040258010010080000100800005006400000200192003820038997339996801002008000020016000020038200381180201100991001008000010000000000051101161120035800001002003920039200392003920039
8020420038150040258010010080000100800005006400000200192003820038997339996801002008000020016000020038200381180201100991001008000010000000000051101161120035800001002003920039200392003920039
8020420038150040258010010080000100800005006400001200192003820038997339996801002008000020016000020038200381180201100991001008000010000000000051101161120035800001002003920039200392003920039

1000 unrolls and 10 iterations

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

retire (01)cycle (02)031e1f3f51inst issue (52)~issue int (53)~issue fp/simd (54)~dispatch int (56)~dispatch fp/simd (57)huge thing int (59)huge thing fp/simd (5b)5f60696d6edispatch stall (70)scheduler rewind (75)scheduler stall (76)~dispatch op (78)~map op int (7c)~map op fp/simd (7e)~map lookup int (7f)~map lookup fp/simd (81)8283pipeline redirect (84)85inst all (8c)inst branch (8d)inst branch taken (90)inst b.cc (94)inst integer (97)inst neon or fp (9a)9fa8acc2cfd5d6ddinst fetch restart (de)e0? fp/simd (ee)gpr retires (ef)f5f6f7f8fd
800242004815590805258001010800001080000506400000020019200382003899963100188001020800002016000020038200381180021109101080000100005020916222003580000102003920039200392003920039
80024200381550039258001010800001080000506400000020019200382003899963100188001020800002016000020038200381180021109101080000100005020216622003580000102003920039200392003920039
80024200381550039258001010800001080000506400000120019200382003899963100188001020800002016000020038200381180021109101080000100005020316222003580000102003920039200392003920039
80024200381550039258001010800001080000506400000020019200382003899963100188001020800002016000020038200381180021109101080000101005020216222003580000102003920039200392003920039
80024200381550039258001010800001080000506400000020019200382003899963100188001020800002016000020038200381180021109101080000100025020216362003580000102003920039200392003920039
80024200381556039258001010800001080000506400000020019200382003899963100188001020800002016000020038200381180021109101080000100005020316362003580000102003920039200392003920039
80024200381560093258001010800001080000506400000020019200382003899963100188001020800002016000020038200381180021109101080000100005020316322003580000102003920039200392003920039
80024200381550039258001010800001080000506400000020019200382003899963100188001020800002016000020038200381180021109101080000100005020216222003580000102003920039200392003920039
80024200381550039258001010800001080000506400000020019200382003899963100188001020800002016000020038200381180021109101080000100305020616222003580000102003920039200392003920039
80024200381550039258001010800001080000506400000020019200382003899963100188001020800002016000020038200381180021109101080000100005020616362003580000102003920039200392003920039