PCLMULQDQ (XMM, XMM, I8) - Port Usage (IACA 2.1)


With blocking instructions for port '0':

Throughput Analysis Report
--------------------------
Block Throughput: 16.00 Cycles       Throughput Bottleneck: Port0

Port Binding In Cycles Per Iteration:
---------------------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |  6   |  7   |
---------------------------------------------------------------------------------------
| Cycles | 16.0   0.0  | 0.0  | 0.0    0.0  | 0.0    0.0  | 0.0  | 1.0  | 0.0  | 0.0  |
---------------------------------------------------------------------------------------


| Num Of |                    Ports pressure in cycles                     |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |  6  |  7  |    |
---------------------------------------------------------------------------------
|   1    | 1.0       |     |           |           |     |     |     |     | CP | cvtss2sd xmm2, xmm3
|   1    | 1.0       |     |           |           |     |     |     |     | CP | cvtss2sd xmm4, xmm3
|   1    | 1.0       |     |           |           |     |     |     |     | CP | cvtss2sd xmm5, xmm3
|   1    | 1.0       |     |           |           |     |     |     |     | CP | cvtss2sd xmm6, xmm3
|   1    | 1.0       |     |           |           |     |     |     |     | CP | cvtss2sd xmm7, xmm3
|   1    | 1.0       |     |           |           |     |     |     |     | CP | cvtss2sd xmm8, xmm3
|   1    | 1.0       |     |           |           |     |     |     |     | CP | cvtss2sd xmm9, xmm3
|   1    | 1.0       |     |           |           |     |     |     |     | CP | cvtss2sd xmm10, xmm3
|   1    | 1.0       |     |           |           |     |     |     |     | CP | cvtss2sd xmm11, xmm3
|   1    | 1.0       |     |           |           |     |     |     |     | CP | cvtss2sd xmm12, xmm3
|   1    | 1.0       |     |           |           |     |     |     |     | CP | cvtss2sd xmm2, xmm3
|   1    | 1.0       |     |           |           |     |     |     |     | CP | cvtss2sd xmm4, xmm3
|   1    | 1.0       |     |           |           |     |     |     |     | CP | cvtss2sd xmm5, xmm3
|   1    | 1.0       |     |           |           |     |     |     |     | CP | cvtss2sd xmm6, xmm3
|   3    | 2.0       |     |           |           |     | 1.0 |     |     | CP | pclmulqdq xmm0, xmm1, 0x2
Total Num Of Uops: 17
⇨ 2 μops that can only use port '0'

With blocking instructions for port '5':

Throughput Analysis Report
--------------------------
Block Throughput: 15.00 Cycles       Throughput Bottleneck: Port5

Port Binding In Cycles Per Iteration:
---------------------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |  6   |  7   |
---------------------------------------------------------------------------------------
| Cycles | 2.0    0.0  | 0.0  | 0.0    0.0  | 0.0    0.0  | 0.0  | 15.0 | 0.0  | 0.0  |
---------------------------------------------------------------------------------------


| Num Of |                    Ports pressure in cycles                     |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |  6  |  7  |    |
---------------------------------------------------------------------------------
|   1    |           |     |           |           |     | 1.0 |     |     | CP | aesdec xmm2, xmm3
|   1    |           |     |           |           |     | 1.0 |     |     | CP | aesdec xmm4, xmm3
|   1    |           |     |           |           |     | 1.0 |     |     | CP | aesdec xmm5, xmm3
|   1    |           |     |           |           |     | 1.0 |     |     | CP | aesdec xmm6, xmm3
|   1    |           |     |           |           |     | 1.0 |     |     | CP | aesdec xmm7, xmm3
|   1    |           |     |           |           |     | 1.0 |     |     | CP | aesdec xmm8, xmm3
|   1    |           |     |           |           |     | 1.0 |     |     | CP | aesdec xmm9, xmm3
|   1    |           |     |           |           |     | 1.0 |     |     | CP | aesdec xmm10, xmm3
|   1    |           |     |           |           |     | 1.0 |     |     | CP | aesdec xmm11, xmm3
|   1    |           |     |           |           |     | 1.0 |     |     | CP | aesdec xmm12, xmm3
|   1    |           |     |           |           |     | 1.0 |     |     | CP | aesdec xmm2, xmm3
|   1    |           |     |           |           |     | 1.0 |     |     | CP | aesdec xmm4, xmm3
|   1    |           |     |           |           |     | 1.0 |     |     | CP | aesdec xmm5, xmm3
|   1    |           |     |           |           |     | 1.0 |     |     | CP | aesdec xmm6, xmm3
|   3    | 2.0       |     |           |           |     | 1.0 |     |     | CP | pclmulqdq xmm0, xmm1, 0x2
Total Num Of Uops: 17
⇨ One μop that can only use port '5'