Apple M1 Microarchitecture Research by Dougall Johnson

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

FMINP (vector, 2D)

Test 1: uops

Code:

  fminp 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)031e1f3f4e51inst 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)a8accfd5d6ddinst fetch restart (de)e0? fp/simd (ee)f5f6f7f8fd
1004203715006116872510001000100026468002018203720371572318951000100020002037203711100110003073116111787100020382038203820382038
1004203715006116872510001000100026468002018203720371572318951000100020002037203711100110000073116111787100020382038203820382038
1004203715006116872510001000100026468002018203720371572318951000100020002037203711100110000073116111787100020382038203820382038
1004203715006116872510001000100026468002018203720371572318951000100020002037203711100110000073116111787100020382038203820382038
1004203715006116872510001000100026468002018203720371572318951000100020002037203711100110000073116111787100020382038203820382038
1004203716006116872510001000100026468002018203720371572318951000100020002037203711100110000073116111787100020382038203820382038
1004203715006116872510001000100026468002018203720371572318951000100020002037203711100110000073116111787100020382038203820382038
100420371501086116872510001000100026468002018203720371572318951000100020002037203711100110000073116111787100020382038203820382038
1004203715006116872510001000100026468002018203720371572318951000100020002037203711100110001073116111787100020382038203820382038
1004203715006116872510001000100026468002018203720371572318951000100020002037203711100110000073116111787100020382038203820382038

Test 2: Latency 1->2

Code:

  fminp 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)03080918191e1f3f4e51inst 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)9fa1a8accdcfd5d6ddinst fetch restart (de)e0? fp/simd (ee)gpr retires (ef)f5f6f7f8fd
102042003715000000061196872510100100100001001000050028476802001820037200371842231874510100200100002002000020037200371110201100991001001000010000007101161119791100001002003820038200382003820038
102042003715000000061196872510100100100001001000050028476802001820037200371842231874510100200100002002000020037200371110201100991001001000010000007101161119791100001002003820038200382003820038
102042003715000009082196872510100106100001001000050028489632001820037200861842231876310100200100002002000020037200371110201100991001001000010000307102161119791100001002003820038200382008620038
1020420037150100000103196872510100100100001001000050028476802001820084200371842231874510100200100002002000020037200371110201100991001001000010000007101161119791100001002003820038200382003820038
102042003715000000061196872510100100100001001000050028476802001820037200371842231874510100200100002002000020037200371110201100991001001000010002007101161119791100001002003820038200382003820038
1020420037150000000583196872510100100100001001000050028476802001820037200371842231874510100200100002002000020037200371110201100991001001000010000307101161119791100001002003820038200382003820038
102042003715000000061196872510100100100001001000050028476802001820037200371842231874510100200100002002000020037200371110201100991001001000010020007101161119791100001002003820038200382003820038
102042003715000000061196872510100100100001001000050028476802001820037200371842231874510100200100002002000020037200371110201100991001001000010000007103161119791100001002003820038200382003820038
102042003715000000061196872510100100100001001000050028476802001820037200371842231874510100200100002002000020037200371110201100991001001000010000007101161119791100001002003820038200382003820038
102042003715000000061196872510100100100001001000050028476802001820037200371842231874510100200100002002000020037200372110201100991001001000010000007101161119791100001002003820038200382003820038

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)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)9fa8acc5cdcfd5d6ddinst fetch restart (de)e0? int output thing (e9)? fp/simd (ee)gpr retires (ef)f5f6f7f8fd
10024200371500061196872510010101000010100005028476801200182003720037184443187671001020100002020000200372003711100211091010100001000006402162219785010000102003820038200382003820038
10024200371500061196872510010101000010100005028476801200182003720037184443187671001020100002020000200372003711100211091010100001000006402162219785010000102003820038200382003820038
10024200371500061196872510010101000010100005028476801200182003720037184443187671001020100002020000200372003711100211091010100001000006402162219785010000102003820038200382003820038
100242003715000360196872510010101000010100005028476801200182003720037184443187671001020100002020000200372003711100211091010100001090006402162219785210000102003820038200382003820038
10024200371500061196872510010101000010100005028476801200182003720037184443187671001020100002020000200372003711100211091010100001000006402162219785010000102003820038200382003820038
10024200371500061196872510010101000010100005028476801200182003720037184443187671001020100002020000200372003711100211091010100001000006402162219785010000102003820038200382003820038
10024200371500084196872510010101000010100005028476801200182003720037184443187671001020100002020000200372003711100211091010100001000006402162219785010000102003820038200382003820038
10024200371500061196872510010101000010100005028476801200182003720037184443187671001020100002020000200372003711100211091010100001000006402162219785010000102003820038200382003820038
10024200371500061196872510010101000010100005028476801200182003720037184443187671001020100002020000200372003711100211091010100001000006402242219785010000102003820038200382003820038
10024200371500061196872510010101000010100005028476801200182003720037184443187671001020100002020000200372003711100211091010100001000006402162219785010000102003820038200382003820038

Test 3: Latency 1->3

Code:

  fminp 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)030a3f4e51inst 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)9fa8a9accdcfd5d6ddinst fetch restart (de)e0? int output thing (e9)? fp/simd (ee)gpr retires (ef)f5f6f7f8fd
1020420037150061196872510100100100001001000050028476801200180200372003718422318745101002001000020020000200372003711102011009910010010000100000071021622197910100001002003820085200382003820038
1020420037150061196872510100100100001001000050028476801200180200372003718422318745101002001000020020000200372003711102011009910010010000100000071021622197910100001002003820038200382003820038
1020420037150082196872510100100100001001000050028476801200180200372003718422318745101002001000020020000200372003711102011009910010010000100000071021622197910100001002003820038200382003820038
1020420037150061196872510100100100001001000050028476801200180200372003718422318745101002001000020020000200372003711102011009910010010000100000071021622197910100001002003820038200382003820038
1020420037150084196872510100100100001001000050028476801200180200372003718422318745101002001000020020000200372003711102011009910010010000100003071021622197910100001002003820038200382003820038
1020420037150061196874410100119100121001000050028476801200180200372003718422318745101002001000020020000200372003711102011009910010010000100000071021622197910100001002003820038200382003820038
1020420037150084196872510100100100001001000050028476801200180200372003718422318745101002001000020020000200372003711102011009910010010000100000071021622197910100001002003820038200382003820038
1020420037150061196872510100100100001001000050028476801200180200372003718422318745101002001000020020000200372003711102011009910010010000100000071021622197910100001002003820038200382003820038
1020420037150061196872510100100100001001000050028476801200180200372003718422318745101002001000020020000200372003711102011009910010010000100000071021622197910100001002003820038200382003820038
1020420037150061196872510100100100001001000050028476801200180200372003718422318745101002001000020020000200372003711102011009910010010000100000071021622197912100001002003820038200382003820038

1000 unrolls and 10 iterations

Result (median cycles for code): 2.0037

retire (01)cycle (02)030b18191e1f3f4e51inst 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)9fa0a1a6a8a9acc2cfd5d6ddinst fetch restart (de)e0? int output thing (e9)? fp/simd (ee)gpr retires (ef)f5f6f7f8fd
100242003715000012032319676251001010100001010000502847680200182008520037184443187671001020100002020000200862013221100211091010100001000000306402252219785010000102003820038200382003820038
1002420037150000006119687251001010100001010000502847680200182003720037184443187671001020100002020000200372003711100211091010100001000000006402162219785010000102003820038200382003820038
1002420037150000006119687251001010100001010000502847680200182003720037184443187671001020100002020000200372003711100211091010100001000000006402162219785010000102003820038200382003820038
1002420037161000006119687251001010100001010150502847680200182003720037184443187671001020100002020000200372003711100211091010100001000000006402162219785010000102003820038200382003820038
1002420037150000906119687251001010100001010000502847680200182003720037184443187671001020100002020000200372003711100211091010100001000000006402162219785010000102003820038200382003820038
1002420037150000006119687251001010100001010000502847680200182003720037184443187671001020100002020000200372003711100211091010100001000000006402162219785010000102003820038200382003820038
1002420037150000006119687251001010100001010000502847680200182003720037184443187671001020100002020000200372003711100211091010100001000000006402162219785010000102003820038200382003820038
1002420037150000006119687251001010100001010000502847680200182003720037184443187671001020100002020000200372003711100211091010100001000000006402162219785010000102003820038200382003820038
1002420037150000006119687251001010100001010000502847680200182003720037184443187671001020100002020000200372003711100211091010100001000000006402162219785010000102003820038200382003820038
1002420037150000006119687251001010100001010000502847680200182003720037184443187671001020100002020000200372003711100211091010100001000000006402162219785010000102003820038200382003820038

Test 4: throughput

Count: 8

Code:

  fminp v0.2d, v8.2d, v9.2d
  fminp v1.2d, v8.2d, v9.2d
  fminp v2.2d, v8.2d, v9.2d
  fminp v3.2d, v8.2d, v9.2d
  fminp v4.2d, v8.2d, v9.2d
  fminp v5.2d, v8.2d, v9.2d
  fminp v6.2d, v8.2d, v9.2d
  fminp 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)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)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)9fa8acc5cfd5d6ddinst fetch restart (de)e0? int output thing (e9)? fp/simd (ee)gpr retires (ef)f5f6f7f8fd
8020420047150040258010010080000100800005006400002001920038200389973399968010020080000200160000200382003811802011009910010080000100000511021611200350800001002003920039200392003920039
8020420038150040258010010080000100800005006400002001920038200389973399968010020080000200160000200382003811802011009910010080000100000511011611200351800001002003920039200392003920039
80204200381500402580100100800001008000050064000020019200382003899737100488010020080000200160000200382003811802011009910010080000100002511011611200350800001002003920039200392003920039
8020420038150040258010010080000100800005006400002001920038200389973399968010020080000200160000200382003811802011009910010080000100000511011611200350800001002003920039200392003920039
8020420038150040258010010080000100800005006400002001920038200389973399968010020080000200160000200382003811802011009910010080000100000511011611200350800001002003920039200392003920039
80204200381500103258010010080000100800005006400002001920038200389973399968010020080000200160000200382003811802011009910010080000100000511011611200350800001002003920039200392003920039
8020420038150040258010010080000100800005006400002001920038200389973399968010020080000200160000200382003811802011009910010080000100000511011611200350800001002003920039200392003920039
8020420038150040258010010080080100800005006400002001920038200389973399968010020080000200160000200382003811802011009910010080000100000511011611200350800001002003920039200392003920039
8020420038150040258010010080000100800005006400002001920038200389973399968010020080000200160000200382003811802011009910010080000100000511011611200350800001002003920039200392003920039
8020420038150040258010010080000100800005006400002001920038200389973399968010020080000200160000200382003811802011009910010080000100000511011611200350800001002003920039200392003920039

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)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)9fa8a9acc2cdcficache miss (d3)d5d6ddinst fetch restart (de)e0? int output thing (e9)eb? fp/simd (ee)gpr retires (ef)f5f6f7f8fd
8002420047150039258001010800001080000506400002001920038200389996310018800102080000201600002003820038118002110910108000010000005020031642200350080000102003920039200392003920039
8002420038150039258001010800001080000506400002001920038200389996310018800102080000201600002003820038118002110910108000010000005020021632200350080000102003920039200392003920039
8002420038150039258001010800001080000506400002001920038200389996310018800102080000201600002003820038118002110910108000010003005020041644200350080000102003920039200392003920039
8002420038150039258001010800001080000506400002001920038200389996310018800102080000201600002003820038118002110910108000010000005020021623200352080000102003920039200392003920039
800242003815012339258001010800001080000506400002001920112200389996310018800102080000201600002003820038118002110910108000010000005020041622200350080000102003920039200392003920039
8002420038150039258001010800001080000506400002001920038200389996310018800102080000201600002003820038118002110910108000010000005020021633200350080000102003920039200392003920039
8002420038150039258001010800001080000506400002001920038200389996310018800102080000201600002003820038118002110910108000010000005020021623200350080000102003920039200392003920039
8002420038149039258001010800001080000506400002001920038200389996310018800102080000201600002003820091118002110910108000010000005020031622200350080000102003920039200392003920039
8002420038150039258001010800001080000506400002001920038200389996310018800102080000201600002003820038118002110910108000010000005020031633200350080000102003920039200392003920039
8002420038150039258001010800001080000506400002001920038200389996310018800102080000201600002003820038118002110910108000010000005020031622200350080000102003920039200392003920039