BTS (M32, R32) - Throughput and Uops (IACA 2.3)


With a non-indexed addressing mode

With 1 independent instruction

Throughput Analysis Report
--------------------------
Block Throughput: 1.10 Cycles       Throughput Bottleneck: Dependency chains (possibly between iterations)

Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |
-------------------------------------------------------------------------
| Cycles | 1.0    0.0  | 1.0  | 1.0    0.5  | 1.0    0.5  | 1.0  | 1.0  |
-------------------------------------------------------------------------


| Num Of |              Ports pressure in cycles               |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |    |
---------------------------------------------------------------------
|   6^   | 1.0       | 1.0 | 1.0   0.5 | 1.0   0.5 | 1.0 | 1.0 |    | bts dword ptr [r14], r8d
Total Num Of Uops: 6

With 16 independent instructions


Throughput Analysis Report
--------------------------
Block Throughput: 17.57 Cycles       Throughput Bottleneck: Dependency chains (possibly between iterations)

Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |
-------------------------------------------------------------------------
| Cycles | 16.0   0.0  | 16.0 | 16.0   8.0  | 16.0   8.0  | 16.0 | 16.0 |
-------------------------------------------------------------------------


| Num Of |              Ports pressure in cycles               |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |    |
---------------------------------------------------------------------
|   6^   | 1.0       | 1.0 | 2.0   1.0 |           | 1.0 | 1.0 |    | bts dword ptr [r14], r8d
|   6^   | 1.0       | 1.0 |           | 2.0   1.0 | 1.0 | 1.0 |    | bts dword ptr [r14+0x4], r8d
|   6^   | 1.0       | 1.0 | 2.0   1.0 |           | 1.0 | 1.0 |    | bts dword ptr [r14+0x8], r8d
|   6^   | 1.0       | 1.0 |           | 2.0   1.0 | 1.0 | 1.0 |    | bts dword ptr [r14+0xc], r8d
|   6^   | 1.0       | 1.0 | 2.0   1.0 |           | 1.0 | 1.0 |    | bts dword ptr [r14+0x10], r8d
|   6^   | 1.0       | 1.0 |           | 2.0   1.0 | 1.0 | 1.0 |    | bts dword ptr [r14+0x14], r8d
|   6^   | 1.0       | 1.0 | 2.0   1.0 |           | 1.0 | 1.0 |    | bts dword ptr [r14+0x18], r8d
|   6^   | 1.0       | 1.0 |           | 2.0   1.0 | 1.0 | 1.0 |    | bts dword ptr [r14+0x1c], r8d
|   6^   | 1.0       | 1.0 | 2.0   1.0 |           | 1.0 | 1.0 |    | bts dword ptr [r14+0x20], r8d
|   6^   | 1.0       | 1.0 |           | 2.0   1.0 | 1.0 | 1.0 |    | bts dword ptr [r14+0x24], r8d
|   6^   | 1.0       | 1.0 | 2.0   1.0 |           | 1.0 | 1.0 |    | bts dword ptr [r14+0x28], r8d
|   6^   | 1.0       | 1.0 |           | 2.0   1.0 | 1.0 | 1.0 |    | bts dword ptr [r14+0x2c], r8d
|   6^   | 1.0       | 1.0 | 2.0   1.0 |           | 1.0 | 1.0 |    | bts dword ptr [r14+0x30], r8d
|   6^   | 1.0       | 1.0 |           | 2.0   1.0 | 1.0 | 1.0 |    | bts dword ptr [r14+0x34], r8d
|   6^   | 1.0       | 1.0 | 2.0   1.0 |           | 1.0 | 1.0 |    | bts dword ptr [r14+0x38], r8d
|   6^   | 1.0       | 1.0 |           | 2.0   1.0 | 1.0 | 1.0 |    | bts dword ptr [r14+0x3c], r8d
Total Num Of Uops: 96

With an indexed addressing mode

With 1 independent instruction

Throughput Analysis Report
--------------------------
Block Throughput: 1.48 Cycles       Throughput Bottleneck: FrontEnd

Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |
-------------------------------------------------------------------------
| Cycles | 1.0    0.0  | 1.0  | 1.0    0.5  | 1.0    0.5  | 1.0  | 1.0  |
-------------------------------------------------------------------------


| Num Of |              Ports pressure in cycles               |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |    |
---------------------------------------------------------------------
|   6    | 1.0       | 1.0 | 1.0   0.5 | 1.0   0.5 | 1.0 | 1.0 |    | bts dword ptr [r14+r13*1], r8d
Total Num Of Uops: 6

With 16 independent instructions


Throughput Analysis Report
--------------------------
Block Throughput: 24.00 Cycles       Throughput Bottleneck: FrontEnd

Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |
-------------------------------------------------------------------------
| Cycles | 16.0   0.0  | 16.0 | 16.0   8.0  | 16.0   8.0  | 16.0 | 16.0 |
-------------------------------------------------------------------------


| Num Of |              Ports pressure in cycles               |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |    |
---------------------------------------------------------------------
|   6    | 1.0       | 1.0 | 1.0   1.0 | 1.0       | 1.0 | 1.0 |    | bts dword ptr [r14+r13*1], r8d
|   6    | 1.0       | 1.0 | 1.0       | 1.0   1.0 | 1.0 | 1.0 |    | bts dword ptr [r14+r13*1+0x4], r8d
|   6    | 1.0       | 1.0 | 1.0   1.0 | 1.0       | 1.0 | 1.0 |    | bts dword ptr [r14+r13*1+0x8], r8d
|   6    | 1.0       | 1.0 | 1.0       | 1.0   1.0 | 1.0 | 1.0 |    | bts dword ptr [r14+r13*1+0xc], r8d
|   6    | 1.0       | 1.0 | 1.0   1.0 | 1.0       | 1.0 | 1.0 |    | bts dword ptr [r14+r13*1+0x10], r8d
|   6    | 1.0       | 1.0 | 1.0       | 1.0   1.0 | 1.0 | 1.0 |    | bts dword ptr [r14+r13*1+0x14], r8d
|   6    | 1.0       | 1.0 | 1.0   1.0 | 1.0       | 1.0 | 1.0 |    | bts dword ptr [r14+r13*1+0x18], r8d
|   6    | 1.0       | 1.0 | 1.0       | 1.0   1.0 | 1.0 | 1.0 |    | bts dword ptr [r14+r13*1+0x1c], r8d
|   6    | 1.0       | 1.0 | 1.0   1.0 | 1.0       | 1.0 | 1.0 |    | bts dword ptr [r14+r13*1+0x20], r8d
|   6    | 1.0       | 1.0 | 1.0       | 1.0   1.0 | 1.0 | 1.0 |    | bts dword ptr [r14+r13*1+0x24], r8d
|   6    | 1.0       | 1.0 | 1.0   1.0 | 1.0       | 1.0 | 1.0 |    | bts dword ptr [r14+r13*1+0x28], r8d
|   6    | 1.0       | 1.0 | 1.0       | 1.0   1.0 | 1.0 | 1.0 |    | bts dword ptr [r14+r13*1+0x2c], r8d
|   6    | 1.0       | 1.0 | 1.0   1.0 | 1.0       | 1.0 | 1.0 |    | bts dword ptr [r14+r13*1+0x30], r8d
|   6    | 1.0       | 1.0 | 1.0       | 1.0   1.0 | 1.0 | 1.0 |    | bts dword ptr [r14+r13*1+0x34], r8d
|   6    | 1.0       | 1.0 | 1.0   1.0 | 1.0       | 1.0 | 1.0 |    | bts dword ptr [r14+r13*1+0x38], r8d
|   6    | 1.0       | 1.0 | 1.0       | 1.0   1.0 | 1.0 | 1.0 |    | bts dword ptr [r14+r13*1+0x3c], r8d
Total Num Of Uops: 96