ADD (M8, I8) - Port Usage (IACA 2.1)


With blocking instructions for port 2:

Throughput Analysis Report
--------------------------
Block Throughput: 11.00 Cycles       Throughput Bottleneck: PORT2_AGU, Port2_DATA

Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |
-------------------------------------------------------------------------
| Cycles | 0.3    0.0  | 0.3  | 11.0   11.0 | 1.0    0.0  | 1.0  | 0.3  |
-------------------------------------------------------------------------


| Num Of |              Ports pressure in cycles               |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |    |
---------------------------------------------------------------------
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm0, dword ptr [r14+0x40]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm1, dword ptr [r14+0x40]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm2, dword ptr [r14+0x40]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm3, dword ptr [r14+0x40]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm4, dword ptr [r14+0x40]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm5, dword ptr [r14+0x40]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm6, dword ptr [r14+0x40]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm7, dword ptr [r14+0x40]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm8, dword ptr [r14+0x40]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm9, dword ptr [r14+0x40]
|   4^   | 0.3       | 0.3 | 1.0   1.0 | 1.0       | 1.0 | 0.3 | CP | add byte ptr [r14], 0x2
Total Num Of Uops: 14
⇨ One μop that can only use port 2

With blocking instructions for port 3:

Throughput Analysis Report
--------------------------
Block Throughput: 11.00 Cycles       Throughput Bottleneck: PORT3_AGU, Port4

Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |
-------------------------------------------------------------------------
| Cycles | 0.3    0.0  | 0.3  | 1.0    1.0  | 11.0   0.0  | 11.0 | 0.3  |
-------------------------------------------------------------------------


| Num Of |              Ports pressure in cycles               |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |    |
---------------------------------------------------------------------
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x40], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x48], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x50], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x58], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x60], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x68], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x70], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x78], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x80], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x88], r8
|   4^   | 0.3       | 0.3 | 1.0   1.0 | 1.0       | 1.0 | 0.3 | CP | add byte ptr [r14], 0x2
Total Num Of Uops: 24
⇨ One μop that can only use port 3

With blocking instructions for port 4:

Throughput Analysis Report
--------------------------
Block Throughput: 11.00 Cycles       Throughput Bottleneck: PORT3_AGU, Port4

Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |
-------------------------------------------------------------------------
| Cycles | 0.3    0.0  | 0.3  | 1.0    1.0  | 11.0   0.0  | 11.0 | 0.3  |
-------------------------------------------------------------------------


| Num Of |              Ports pressure in cycles               |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |    |
---------------------------------------------------------------------
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x40], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x48], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x50], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x58], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x60], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x68], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x70], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x78], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x80], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x88], r8
|   4^   | 0.3       | 0.3 | 1.0   1.0 | 1.0       | 1.0 | 0.3 | CP | add byte ptr [r14], 0x2
Total Num Of Uops: 24
⇨ One μop that can only use port 4

With blocking instructions for ports {0, 1, 5}:

Throughput Analysis Report
--------------------------
Block Throughput: 4.35 Cycles       Throughput Bottleneck: Port0, Port1, Port5

Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |
-------------------------------------------------------------------------
| Cycles | 4.3    0.0  | 4.3  | 1.0    1.0  | 1.0    0.0  | 1.0  | 4.3  |
-------------------------------------------------------------------------


| Num Of |              Ports pressure in cycles               |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |    |
---------------------------------------------------------------------
|   1    | 0.3       | 0.3 |           |           |     | 0.3 | CP | movq xmm0, xmm1
|   1    | 0.3       | 0.3 |           |           |     | 0.3 | CP | movq xmm2, xmm1
|   1    | 0.3       | 0.4 |           |           |     | 0.3 | CP | movq xmm3, xmm1
|   1    | 0.3       | 0.3 |           |           |     | 0.4 | CP | movq xmm4, xmm1
|   1    | 0.4       | 0.3 |           |           |     | 0.3 | CP | movq xmm5, xmm1
|   1    | 0.3       | 0.3 |           |           |     | 0.3 | CP | movq xmm6, xmm1
|   1    | 0.3       | 0.3 |           |           |     | 0.3 | CP | movq xmm7, xmm1
|   1    | 0.3       | 0.3 |           |           |     | 0.3 | CP | movq xmm8, xmm1
|   1    | 0.3       | 0.3 |           |           |     | 0.3 | CP | movq xmm9, xmm1
|   1    | 0.3       | 0.3 |           |           |     | 0.3 | CP | movq xmm10, xmm1
|   1    | 0.3       | 0.3 |           |           |     | 0.3 | CP | movq xmm11, xmm1
|   1    | 0.3       | 0.3 |           |           |     | 0.3 | CP | movq xmm12, xmm1
|   4^   | 0.3       | 0.3 | 1.0   1.0 | 1.0       | 1.0 | 0.3 | CP | add byte ptr [r14], 0x2
Total Num Of Uops: 16
⇨ One μop that can only use ports {0, 1, 5}

With an indexed addressing mode


With blocking instructions for port 2:

Throughput Analysis Report
--------------------------
Block Throughput: 11.00 Cycles       Throughput Bottleneck: PORT2_AGU, Port2_DATA

Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |
-------------------------------------------------------------------------
| Cycles | 0.3    0.0  | 0.3  | 11.0   11.0 | 1.0    0.0  | 1.0  | 0.3  |
-------------------------------------------------------------------------


| Num Of |              Ports pressure in cycles               |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |    |
---------------------------------------------------------------------
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm0, dword ptr [r14+0x40]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm1, dword ptr [r14+0x40]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm2, dword ptr [r14+0x40]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm3, dword ptr [r14+0x40]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm4, dword ptr [r14+0x40]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm5, dword ptr [r14+0x40]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm6, dword ptr [r14+0x40]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm7, dword ptr [r14+0x40]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm8, dword ptr [r14+0x40]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm9, dword ptr [r14+0x40]
|   4    | 0.3       | 0.3 | 1.0   1.0 | 1.0       | 1.0 | 0.3 | CP | add byte ptr [r14+r13*1], 0x2
Total Num Of Uops: 14
⇨ One μop that can only use port 2

With blocking instructions for port 3:

Throughput Analysis Report
--------------------------
Block Throughput: 11.00 Cycles       Throughput Bottleneck: PORT3_AGU, Port4

Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |
-------------------------------------------------------------------------
| Cycles | 0.3    0.0  | 0.3  | 1.0    1.0  | 11.0   0.0  | 11.0 | 0.3  |
-------------------------------------------------------------------------


| Num Of |              Ports pressure in cycles               |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |    |
---------------------------------------------------------------------
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x40], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x48], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x50], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x58], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x60], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x68], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x70], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x78], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x80], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x88], r8
|   4    | 0.3       | 0.3 | 1.0   1.0 | 1.0       | 1.0 | 0.3 | CP | add byte ptr [r14+r13*1], 0x2
Total Num Of Uops: 24
⇨ One μop that can only use port 3

With blocking instructions for port 4:

Throughput Analysis Report
--------------------------
Block Throughput: 11.00 Cycles       Throughput Bottleneck: PORT3_AGU, Port4

Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |
-------------------------------------------------------------------------
| Cycles | 0.3    0.0  | 0.3  | 1.0    1.0  | 11.0   0.0  | 11.0 | 0.3  |
-------------------------------------------------------------------------


| Num Of |              Ports pressure in cycles               |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |    |
---------------------------------------------------------------------
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x40], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x48], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x50], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x58], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x60], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x68], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x70], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x78], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x80], r8
|   2^   |           |     |           | 1.0       | 1.0 |     | CP | mov qword ptr [r14+0x88], r8
|   4    | 0.3       | 0.3 | 1.0   1.0 | 1.0       | 1.0 | 0.3 | CP | add byte ptr [r14+r13*1], 0x2
Total Num Of Uops: 24
⇨ One μop that can only use port 4

With blocking instructions for ports {0, 1, 5}:

Throughput Analysis Report
--------------------------
Block Throughput: 4.35 Cycles       Throughput Bottleneck: Port0, Port1, Port5

Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |
-------------------------------------------------------------------------
| Cycles | 4.3    0.0  | 4.3  | 1.0    1.0  | 1.0    0.0  | 1.0  | 4.3  |
-------------------------------------------------------------------------


| Num Of |              Ports pressure in cycles               |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |    |
---------------------------------------------------------------------
|   1    | 0.3       | 0.3 |           |           |     | 0.3 | CP | movq xmm0, xmm1
|   1    | 0.3       | 0.3 |           |           |     | 0.3 | CP | movq xmm2, xmm1
|   1    | 0.3       | 0.3 |           |           |     | 0.3 | CP | movq xmm3, xmm1
|   1    | 0.3       | 0.3 |           |           |     | 0.4 | CP | movq xmm4, xmm1
|   1    | 0.3       | 0.4 |           |           |     | 0.3 | CP | movq xmm5, xmm1
|   1    | 0.3       | 0.3 |           |           |     | 0.3 | CP | movq xmm6, xmm1
|   1    | 0.3       | 0.3 |           |           |     | 0.3 | CP | movq xmm7, xmm1
|   1    | 0.3       | 0.3 |           |           |     | 0.3 | CP | movq xmm8, xmm1
|   1    | 0.3       | 0.3 |           |           |     | 0.3 | CP | movq xmm9, xmm1
|   1    | 0.3       | 0.3 |           |           |     | 0.4 | CP | movq xmm10, xmm1
|   1    | 0.3       | 0.3 |           |           |     | 0.3 | CP | movq xmm11, xmm1
|   1    | 0.3       | 0.3 |           |           |     | 0.3 | CP | movq xmm12, xmm1
|   4    | 0.3       | 0.3 | 1.0   1.0 | 1.0       | 1.0 | 0.3 | CP | add byte ptr [r14+r13*1], 0x2
Total Num Of Uops: 16
⇨ One μop that can only use ports {0, 1, 5}