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, 2S)

Test 1: uops

Code:

  uzp2 v0.2s, v0.2s, v1.2s
  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)030b181e3f4e51inst issue (52)~issue fp/simd (54)~dispatch fp/simd (57)huge thing fp/simd (5b)696d6edispatch 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)a1a8accfd5d6ddinst fetch restart (de)e0? fp/simd (ee)f5f6f7f8fd
10042037160008216872510001000100026468020182037203715723189510001000200020372037111001100000073116111787100020382038203820382038
10042037160006116872510001000100026468020182037203715723189510001000200020372037111001100000073116111787100020382038203820382038
100420371600010316872510001000100026468020182037203715723189510001000200020372037111001100000073116111787100020382038203820382038
10042037160006116872510001000100026468020182037203715723189510001000200020372037111001100001073116111787100020382038203820382038
100420371600018416872510001000100026468020182037203715723189510001000200020372037111001100000073116111787100020382038203820382038
10042037160006116872510001000100026468020182037203715723189510001000200020372037111001100000073116111787100020382038203820382038
100420371600059416872510001000100026596320182037203715723189510001000200020372037111001100000073116111787100020382038203820382038
10042037150006116872510001000100026468020182037203715723189510001000200020372037111001100000073116111787100020382038203820382038
10042037150006116872510001000100026468020182037203715723189510001000200020372037111001100000073116111787100020382038203820382038
10042037160006116872510001000100026468020182037203715723189510001000200020372037111001100000073116111787100020382038203820382038

Test 2: Latency 1->2

Code:

  uzp2 v0.2s, v0.2s, v1.2s
  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)9fa8accfd5d6ddinst fetch restart (de)e0? fp/simd (ee)gpr retires (ef)f5f6f7f8fd
1020420037155006119687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100007101161119791100001002003820038200382003820038
10204200371552106119687251010010010000100100005002847680020018200372003718422318745101002001000020020000200372003711102011009910010010000100007101161119791100001002003820038200382003820038
10204200371611506119687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100137101161119791100001002003820038200382003820038
1020420037155006119687251010010010000100100005002847680120018200832008618422318745101002001000020020000200372003711102011009910010010000100107101161119791100001002003820038200382003820038
10204200371561506119687251010010010000100100005002847680020018200372003718422318745101002001000020020000200372003711102011009910010010000100007101161119791100001002003820038200382003820038
10204200371553006119687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100007101161119791100001002003820038200382003820038
1020420037155006119687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100037101161119791100001002003820038200382003820038
10204200371552706119687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100007101161119791100001002003820038200382003820038
10204200371553006119687251010010010000100100005002847680120018200372003718422318762101002001000020020000200372003711102011009910010010000100007101161119791100001002003820038200382003820038
10204200371553906119687251010010010000100100005002847680120018200372003718422318745101002001000020020000200372003711102011009910010010000100107101161119791100001002003820038200382003820038

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0037

retire (01)cycle (02)031e3f4e51inst 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)60696b6d6edispatch stall (70)72scheduler 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)9fa9accdcfd5d6ddinst fetch restart (de)e0? fp/simd (ee)gpr retires (ef)f5f6f7f8fd
1002420037150061196872510010101000010100005028476801200180200372003718444031876710010201000020200002003720037111002110910101000010000640216221978510000102003820038200382003820038
1002420037150061196872510010101000010100005028476801200180200372003718444031876710010201000020200002003720037111002110910101000010000640216221978510000102003820038200382003820038
1002420037150061196872510010101000010100005028476801200180200372003718444031876710010201000020200002003720084211002110910101000010000640216221978510000102003820038200382003820038
1002420037150061196872510010101000010100005028476801200183200372003718444031876710010201000020200002003720037111002110910101000010000640216221978510000102003820038200382003820038
1002420037150061196872510010101000010100005028476801200180200372003718444031876710010201000020200002003720037111002110910101000010000640216221978510000102003820038200382003820038
1002420037150061196872510010101000010100005028476801200180200372003718444031876710010201000020200002003720037111002110910101000010000640216221978510000102003820038200382003820038
1002420037149061196872510010101000010100005028476801200180200372003718444031876710010201000020200002003720037111002110910101000010000640216221978510000102003820038200382003820038
1002420037150061196872510010101000010100005028476801200180200372003718444031876710010201000020200002003720037111002110910101000010200640216221978510000102003820038200382003820038
1002420037150061196872510010101000010100005028476800200180200372003718444031876710010201000020200002003720037111002110910101000010000640216221978510000102003820038200382003820038
1002420037150061196872510010101000010100005028476800200180200372003718444031876710010201000020200002003720037111002110910101000010000640216221978510000102003820038200382003820038

Test 3: Latency 1->3

Code:

  uzp2 v0.2s, v1.2s, v0.2s
  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)0308090b0f18191e1f3a3f4e51inst 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)696d6edispatch 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)9fa0a1a6a7a8a9acc2branch mispredict (cb)cfd5d6ddinst fetch restart (de)e0? int output thing (e9)? fp/simd (ee)gpr retires (ef)f5f6f7f8fd
102042003715500000100061196872510100100100001001000050028476802001820037200371842231874510100200100002002000020037200371110201100991001001000010000000000071011611197910100001002003820038200382003820038
10204200371550000001500103196872510100100100001001000050028476802001820037200371842231874510100200100002002000020037200371110201100991001001000010000000030071011611197910100001002003820038200382003820038
1020420037155000000000117196872510100100100001001000050028476802001820037200371842231874510100200100002002000020037200371110201100991001001000010000000030071011611197910100001002003820038200382003820038
102042003715500000030061196872510100100100001001000050028476802001820037200371842231874510100200100002002000020037200371110201100991001001000010000000000071011611197910100001002003820038200382003820038
10204200371550000003300611968725101001001000010010000500284768020018200372003718422318745101002001000020020000200372003711102011009910010010000100000038000071011611197910100001002003820038200382003820038
102042003715500000230061196872510100100100001001000050028476802001820037200371842231874510100200100002002000020037200371110201100991001001000010000000000071011611197910100001002003820038200382003820038
1020420037155000000120061196872510100100100001001000050028476802001820037200371842231874510100200100002002000020037200371110201100991001001000010000000000071011611197910100001002003820038200382003820038
102042003715500000000061196872510100100100001001000050028476802001820037200371842231874510100200100002002000020037200371110201100991001001000010000000000071011611197910100001002003820038200382003820038
102042003715500000000061196872510100100100001001000050028476802001820037200371842231874510100200100002002000020037200371110201100991001001000010000000000071011611197910100001002003820038200382003820038
1020420037156000000150061196872510100100100001001000050028476802001820037200371842231874510100200100002002000020037200371110201100991001001000010000000000071011611197910100001002003820038200382003820038

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0037

retire (01)cycle (02)030918191e1f3f4e51inst 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)9fa1a8acc2branch mispredict (cb)cfd5d6ddinst fetch restart (de)e0? fp/simd (ee)gpr retires (ef)f5f6f7f8fd
100242003715500036061196872510010101000010100005028476800200182003720037184443187671001020100002020000200372003711100211091010100001000300640516221978510000102003820038200382003820038
10024200371550000061196872510010101000010100005028476800200182003720037184443187671001020100002020000200372003711100211091010100001000000640216231978510000102003820038200382003820038
100242003715500051061196872510010101000010100005028476800200182003720037184443187671001020100002020000200372003711100211091010100001000000640216221978510000102003820038200382003820038
10024200371550000061196872510010101000010100005028476800200182003720037184443187671001020100002020000200372003711100211091010100001000000640216221978510000102003820038200382003820038
10024200371550000061196872510010101000010100005028476801200182003720037184443187671001020100002020000200372003711100211091010100001000000640216221978510000102003820038200382003820038
100242003715500000131196872510010101000010100005028476800200182003720037184443187671001020100002020000200372003711100211091010100001000000640216221978510000102003820038200382003820038
10024200371550000061196872510010101000010100005028476800200182003720037184443187671001020100002020000200372003711100211091010100001000000640216221978510000102003820038200382003820038
10024200371550000061196872510010101000010100005028476800200182003720037184443187671001020100002020000200372003711100211091010100001000000640216221978510000102003820038200382003820038
100242003715500015061196872510010101000010100005028476800200182003720037184443187671001020100002020000200372003711100211091010100001000000640216221978510000102003820038200382003820038
1002420037155000537061196872510010101000010100005028476800200182003720037184443187671001020100002020000200372003711100211091010100001000000640216221978510000102003820038200382003820038

Test 4: throughput

Count: 8

Code:

  uzp2 v0.2s, v8.2s, v9.2s
  uzp2 v1.2s, v8.2s, v9.2s
  uzp2 v2.2s, v8.2s, v9.2s
  uzp2 v3.2s, v8.2s, v9.2s
  uzp2 v4.2s, v8.2s, v9.2s
  uzp2 v5.2s, v8.2s, v9.2s
  uzp2 v6.2s, v8.2s, v9.2s
  uzp2 v7.2s, v8.2s, v9.2s
  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)030b18191e1f3a3f51inst 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)696d6edispatch 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)9fa1a8accfd5d6ddinst fetch restart (de)e0? int output thing (e9)? fp/simd (ee)gpr retires (ef)f5f6f7f8fd
802042005815600000040258010010080000100800005006400002001920038200389973399968010020080000200160000200382003811802011009910010080000100010511021611200350800001002003920039200392003920039
802042003815500000082258010010080000100800005006400002001920038200389973399968010020080000200160000200382003811802011009910010080000100000511011611200350800001002003920039200392013720039
802042008815500000040258010010080000100800005006400002001920038200389973399968010020080000200160000200382003811802011009910010080000100000511011611200350800001002003920039200392003920039
802042003815500000040258010010080000100800005006400002001920038200389973399968010020080000200160000200382003811802011009910010080000100000511011611200350800001002003920039200392003920039
802042003815500000040258010010080000100800005006400002001920038200389973399968010020080000200160000200382003811802011009910010080000100000511011611200350800001002003920039200392003920039
802042003815500000040258010010080000100800005006400002001920038200389973399968010020080000200160000200382003811802011009910010080000100030511011611200350800001002003920039200392003920039
802042003815600000040258010010080000100800005006400002001920038200389973399968010020080000200160000200382003811802011009910010080000100043511011611200350800001002003920241200392009220039
802042003816100000040258010010080000100800005006400002001920038200389973399968010020080000200160000200382003811802011009910010080000100010511011611200350800001002003920039200392003920039
802042003815600000082258010010080000100800005006400002001920038200389973399968010020080000200160000200382003811802011009910010080000100000511011611200350800001002003920039200392003920039
802042003815500000040258010010080000100800005006400002001920038200389973399968010020080000200160000200382003811802011009910010080000100000511011611200350800001002003920039200392003920039

1000 unrolls and 10 iterations

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

retire (01)cycle (02)031e3f51inst 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)6061696b6d6edispatch 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)9fa8accfd0d2d5d6ddinst fetch restart (de)e0? fp/simd (ee)gpr retires (ef)f5f6f7f8fd
800242004715503925800101080000108000050640000002001902003820038999631001880010208000020160000200382003811800211091010800001080502000416112003580000102003920039200392003920039
800242003815503925800101080000108000050640000002001902003820038999631001880010208000020160000200382003811800211091010800001000502000116112003580000102003920039200392003920039
800242003815503925800101080000108000050640000002001902003820038999631001880010208000020160000200382003811800211091010800001000502000316112003580000102003920039200392003920039
8002420038155039258001010800001080000506400000020019020038200389996310018800102080000201600002003820038118002110910108000010609502050116112003580000102003920039200392003920039
8002420038155060925800101080000108000050640000002001902003820038999631001880010208000020160000200382003811800211091010800001009502000216442003580000102003920039200392003920039
800242003815503925800101080000108000050640000002001902003820038999631001880010208000020160000200382003811800211091010800001040502000216112003580000102003920039200392003920039
8002420038155039258001010800001080000506400000020019020038200389996310018800102080000201600002003820038118002110910108000010110502000416112003580000102003920039200392003920039
800242003815603925800101080000108000050640000002001902003820038999631001880010208000020160000200382003811800211091010800001000502000116112003580000102003920039200392003920039
800242003815568125800101080000108000050640000002001902003820038999631001880010208000020160000200382003811800211091010800001010502000316332003580000102003920039200392003920039
800242003815503925800101080000108000050640000002001902003820038999631001880010208000020160000200382003811800211091010800001000502000116112003580000102003920039200392003920039