Apple M1 Microarchitecture Research by Dougall Johnson

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

AND (vector, 16B)

Test 1: uops

Code:

  and v0.16b, v0.16b, v1.16b
  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)03081e3f4e51inst 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
100420371500113168725100010001000264680020182037203715723189510001000200020372037111001100000373216211787100020382038203820382038
10042037160085168725100010001000264680020182037203715723189510001000200020372037111001100000073116111787100020382038203820382038
1004203716019861168725100010001000264680020182037203715723189510001000200020372037111001100000073116111787100020382038203820382038
10042037150061168725100010001000264680020182037203715723189510001000200020372037111001100000073116111787100020382038203820382038
10042037150084168725100010001000264680020182037203715723189510001000200020372037111001100000073116111787100020382038203820382038
10042037150073168725100010001000264680120182037203715723189510001000200020372037111001100000073116111787100020382038203820382038
100420371500611687251000100010002646801201820372037157231895100010002000203720371110011000150073116111787100020382038203820382038
10042037160082168725100010001000264680020182037203715723189510001000200020372037111001100000073116111787100020382038203820382038
10042037160082168725100010001000264680120182037203715723189510001000200020372037111001100000073116111787100020382038203820382038
100420371501561168725100010001000264680120182037203715723189510001000200020372037111001100001073116111787100020382038203820382038

Test 2: Latency 1->2

Code:

  and v0.16b, v0.16b, v1.16b
  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)03091e3f4e51inst 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)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)9fcfd5d6ddinst fetch restart (de)e0? fp/simd (ee)gpr retires (ef)f5f6f7f8fd
1020420037150287611968725101001001000010010000500284768012001820037200371842203187451010020010000200200002003720037111020110099100100100001007101161119791100001002003820038200382003820038
102042008415000611968725101001001000010010000500284807012001820037200371842203187451010020010000200200002003720037111020110099100100100001007101161119791100001002003820038200382003820038
102042003715500611968725101001001000010010000500284768012001820037200371842203187451010020010000200200002003720037111020110099100100100001007101161119791100001002003820038200382003820038
102042003715000611968725101001001000010010000500284768012001820037200371842203187451010020010000200200002003720037111020110099100100100001007101161119791100001002003820038200382003820038
102042003715000611968725101001001000010010000500284768012001820037200371842203187451010020010000200200002003720037111020110099100100100001007101161119791100001002003820038200382003820038
102042003715000611968725101001001000010010000500284768012001820037200371842203187451010020010000200200002003720037111020110099100100100001007101161119791100001002003820038200382003820038
102042003715000611968725101001001000010010000500284768012001820037200371842203187451010020010000200200002003720037111020110099100100100001007101161119791100001002003820038200382003820038
102042003715000611968725101001001000010010000500284768012001820037200371842203187451010020010000200200002003720037111020110099100100100001007101161119791100001002003820038200382003820038
102042003715000611968725101001001000010010000500284768012001820037200371842203187451010020010000200200002003720037111020110099100100100001007101161119791100001002003820038200382003820038
1020420037150002321968725101001001000010010000500284768012001820037200371842203187451010020010000200200002003720037111020110099100100100001007101161119791100001002003820038200382003820038

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0037

retire (01)cycle (02)0318191e3f4e51inst 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)9fa0a1a8a9accfd5d6ddinst fetch restart (de)e0? fp/simd (ee)gpr retires (ef)f5f6f7f8fd
100242003715000061196872510010101000010100005028476801200182003720037184443187671001020100002020000200372003711100211091010100001000000640216221978510000102003820038200382003820038
100242003715000061196872510010101000010100005028476801200182003720037184443187671001020100002020000200372003711100211091010100001000000640216221978510000102003820038200382003820038
100242003715000061196872510010101000010100005028476801200182003720037184443187671001020100002020000200372003711100211091010100001000000640216221978510000102003820038200382003820038
100242003715000061196872510010101000010100005028476801200182003720037184443187671001020100002020000200372003711100211091010100001000000640216221978510000102003820038200382003820038
100242003715000061196872510010101000010100005028476801200182003720037184443187671001020100002020000200372003711100211091010100001000000640216221978510000102003820038200382003820038
100242003715000061196872510010101000010100005028476801200182003720037184443187671001020100002020000200372003711100211091010100001000000640216221978510000102003820038200382003820038
100242003715000061196872510010101000010100005028476801200182003720037184443187671001020100002020000200372003711100211091010100001000100640216221978510000102003820038200382003820038
100242003715000061196872510010101000010100005028476801200182003720037184443187671001020100002020000200372003711100211091010100001000000640216221978510000102003820038200382003820038
100242003715000061196872510010101000010100005028476801200182003720037184443187671001020100002020000200372003711100211091010100001000000640216221978510000102003820038200382003820038
1002420037150000156196872510010101000010100005028476801200182003720037184443187671001020100002020000200372003711100211091010100001000000640216221978510000102003820038200382003820038

Test 3: Latency 1->3

Code:

  and v0.16b, v1.16b, v0.16b
  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)030818191e1f3f4e51inst 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)9fa8acc5cfd5d6ddinst fetch restart (de)e0? int output thing (e9)? fp/simd (ee)gpr retires (ef)f5f6f7f8fd
102042003715000000611968725101001001000010010000500284768002001820037200371842231874510100200100002002000020037200371110201100991001001000010000071021622197910100001002003820038200382003820038
102042003715000000611968725101001001000010010000500284768002001820037200371842231874510100200100002002000020037200371110201100991001001000010000071021622197919100001002003820038200382003820038
102042003715000000611968725101001001000010010000500284768002001820037200371842231874510100200100002002000020037200371110201100991001001000010000071021622197910100001002003820038200382003820038
102042003715000000611968725101001001000010010000500284768002001820037200371842231874510100200100002002000020037200371110201100991001001000010000071021622197910100001002003820038200382003820038
102042003715000000611968725101001001000010010000500284768012001820037200371842231874510100200100002002000020037200371110201100991001001000010000071021622197910100001002003820038200382003820038
102042003715000000611968725101001001000010010000500284768002001820037200371842231874510257200100002002000020037200371110201100991001001000010000071021622197910100001002008420038200382003820038
1020420037150000006119687251010010010000100100005002847680020018200372003718422318745101002001000020020000200372003711102011009910010010000100093071021622197910100001002003820038200382003820038
102042003715000000611968725101001001000010010000500284768002001820037200371842231874510100200100002002000020037200371110201100991001001000010000071021622197910100001002003820038200382003820038
1020420037150000006119687251010010010000100100005002847680020018200372003718422318745101002001000020020000200372003711102011009910010010000100051071031622197910100001002003820038200382003820038
102042003715000000611968725101001001000010010000500284768012001820037200371842231874510100200100002002000020037200371110201100991001001000010000071021622197910100001002003820038200382003820038

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0037

retire (01)cycle (02)0308091e3f4e51inst 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)9fa6a8accfd5d6ddinst fetch restart (de)e0? int output thing (e9)? fp/simd (ee)gpr retires (ef)f5f6f7f8fd
10024200371490007261968725100101010000101000050284768020018200372003718444318767100102010000202000020084200371110021109101010000100006405165519785010000102003820038200382003820038
10024200371500006311968725100101010000101000050284768020018200372003718444318767100102010000202000020037200371110021109101010000100036406165619785010000102003820038200382003820038
1002420037150000611968725100101010000101000050284768020018200372003718444318767100102010000202000020037200371110021109101010000100106406165619785010000102003820038200382003820038
1002420037150000611968725100101010000101000050284768020018200372003718444318767100102010000202000020085200371110021109101010000103306406164619785010000102003820038200382003820038
1002420037150000611968725100101010000101000050284768020018200372003718444318767100102010000202000020037200371110021109101010000100006404165519785010000102003820038200382003820038
1002420037150000841968725100101010000101000050284768020018200372003718444318767100102010000202000020037200371110021109101010000100006406164619785010000102003820038200382003820038
1002420037149000611968725100101010000101000050284768020018200372003718444318767100102010000202000020037200371110021109101010000100006406165619785010000102003820038200382003820038
1002420037150000611968725100101010000101000050284768020018200372003718444318767100102010000202000020037200371110021109101010000100006406166519785010000102003820038200382003820038
1002420037149000611968725100101010000101030450284768020018200372003718444318767100102010000202000020037200371110021109101010000100066406165419785010000102003820038200382003820038
1002420037150000611968725100101010000101000050284768020018200372003718444318767100102010000202000020037200371110021109101010000100006405165519785010000102003820038200382003820038

Test 4: throughput

Count: 8

Code:

  and v0.16b, v8.16b, v9.16b
  and v1.16b, v8.16b, v9.16b
  and v2.16b, v8.16b, v9.16b
  and v3.16b, v8.16b, v9.16b
  and v4.16b, v8.16b, v9.16b
  and v5.16b, v8.16b, v9.16b
  and v6.16b, v8.16b, v9.16b
  and v7.16b, v8.16b, v9.16b
  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)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)60696d6edispatch 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)9fa8accfd5d6ddinst fetch restart (de)e0? fp/simd (ee)gpr retires (ef)f5f6f7f8fd
8020420060151040258010010080000100800005006400000200192003820038997303999680100200800002001600002003820038118020110099100100800001000051102161120035800001002003920039200392003920039
8020420038150040258010010080000100800005006400000200192003820038997303999680100200800002001600002003820038118020110099100100800001000051101161120035800001002003920039200392003920039
8020420038150040258010010080000100800005006400000200192003820038997303999680100200800002001600002003820038118020110099100100800001000951101161120035800001002003920039200392003920039
80204200381509922258010010080000100800005006400000200192003820038997303999680100200800002001600002003820038118020110099100100800001000051101161120035800001002003920039200392003920039
8020420038150940258010010080000100800005006400000200192008820038997303999680100200800002001600002003820038118020110099100100800001000351101161120035800001002003920039200392003920039
8020420038150040258010010080000100800005006400000200192003820038997303999680100200800002001600002003820038118020110099100100800001000051101161120035800001002003920039200392003920039
8020420038150040258010010080000100800005006400000200192003820038997303999680100200800002001600002003820038118020110099100100800001000051101161120035800001002003920039200392003920039
8020420038150040258010010080000100800005006400000200192003820038997303999680100200800002001600002003820038118020110099100100800001000051101161120035800001002003920039200392003920039
8020420038150040258010010080000100800005006400000200192003820038997303999680100200800002001600002003820038118020110099100100800001000051101161120035800001002003920039200392003920039
8020420038150040258010010080000100800005006400000200192003820038997303999680100200800002001600002003820038118020110099100100800001000051101161120035800001002003920039200392003920039

1000 unrolls and 10 iterations

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

retire (01)cycle (02)03181e1f3f51inst 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)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)9fa8acc5cfd5d6d9daddinst fetch restart (de)e0? fp/simd (ee)gpr retires (ef)f5f6f7f8fd
80024200481500003925800101380000108000050640000120019020038200389996310018800102080000201600002003820038118002110910108000010100502061600562003580000102003920039200392003920039
800242003815009041925800101080000108000050640000120019020038200389996310018800102080000201600002003820038118002110910108000010000502031600532003580000102003920039200392003920039
80024200381500003925800101080000108000050640000120019020038200389996310018800102080000201600002003820038118002110910108000010000502051600542003580000102003920039200392003920039
80024200381490003925800101080000108000050640000120019020038200389996310018800102080000201600002003820038118002110910108000010200502051600532003580000102003920039200392003920039
80024200381500003925800101080000108000050640000120019020038200389996310018800102080000201600002003820038118002110910108000010000502031600352003580000102003920039200392003920039
80024200381500003925800101080000108000050640000120019020038200389996310018800102080000201600002003820038118002110910108000010000502031600352003580000102003920039200392003920039
80024200381500003925800101080000108000050640000120019020038200389996310018800102080000201600002003820038118002110910108000010000502031600352003580000102003920039200392003920039
80024200381500003925800101080000108000050640000120019020038200389996310018800102080000201600002003820038118002110910108000010160502051600352003580000102003920039200392003920039
800242003815000039258001010800001080000506400001200190200382003899963100188001020800002016000020038200381180021109101080000100960502031600532003580000102003920039200392003920039
80024200381500003925800101080000108000050640000120019020038200389996310018800102080000201600002003820038118002110910108000010000502031600352003580000102003920039200392003920039