RCPSS (XMM, XMM) - Throughput and Uops (IACA 2.2)


With different registers for different operands

With 1 independent instruction

Throughput Analysis Report
--------------------------
Block Throughput: 1.00 Cycles       Throughput Bottleneck: Port0

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


| Num Of |              Ports pressure in cycles               |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |    |
---------------------------------------------------------------------
|   1    | 1.0       |     |           |           |     |     | CP | rcpss xmm0, xmm1
Total Num Of Uops: 1

With 12 independent instructions


Throughput Analysis Report
--------------------------
Block Throughput: 12.00 Cycles       Throughput Bottleneck: Port0

Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |
-------------------------------------------------------------------------
| Cycles | 12.0   0.0  | 0.0  | 0.0    0.0  | 0.0    0.0  | 0.0  | 0.0  |
-------------------------------------------------------------------------


| Num Of |              Ports pressure in cycles               |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |    |
---------------------------------------------------------------------
|   1    | 1.0       |     |           |           |     |     | CP | rcpss xmm0, xmm1
|   1    | 1.0       |     |           |           |     |     | CP | rcpss xmm2, xmm1
|   1    | 1.0       |     |           |           |     |     | CP | rcpss xmm3, xmm1
|   1    | 1.0       |     |           |           |     |     | CP | rcpss xmm4, xmm1
|   1    | 1.0       |     |           |           |     |     | CP | rcpss xmm5, xmm1
|   1    | 1.0       |     |           |           |     |     | CP | rcpss xmm6, xmm1
|   1    | 1.0       |     |           |           |     |     | CP | rcpss xmm7, xmm1
|   1    | 1.0       |     |           |           |     |     | CP | rcpss xmm8, xmm1
|   1    | 1.0       |     |           |           |     |     | CP | rcpss xmm9, xmm1
|   1    | 1.0       |     |           |           |     |     | CP | rcpss xmm10, xmm1
|   1    | 1.0       |     |           |           |     |     | CP | rcpss xmm11, xmm1
|   1    | 1.0       |     |           |           |     |     | CP | rcpss xmm12, xmm1
Total Num Of Uops: 12

With the same register for for different operands

With 1 independent instruction

Throughput Analysis Report
--------------------------
Block Throughput: 5.00 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  | 0.0  | 0.0    0.0  | 0.0    0.0  | 0.0  | 0.0  |
-------------------------------------------------------------------------


| Num Of |              Ports pressure in cycles               |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |    |
---------------------------------------------------------------------
|   1    | 1.0       |     |           |           |     |     | CP | rcpss xmm0, xmm0
Total Num Of Uops: 1

With 13 independent instructions


Throughput Analysis Report
--------------------------
Block Throughput: 13.00 Cycles       Throughput Bottleneck: Port0

Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |
-------------------------------------------------------------------------
| Cycles | 13.0   0.0  | 0.0  | 0.0    0.0  | 0.0    0.0  | 0.0  | 0.0  |
-------------------------------------------------------------------------


| Num Of |              Ports pressure in cycles               |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |    |
---------------------------------------------------------------------
|   1    | 1.0       |     |           |           |     |     | CP | rcpss xmm0, xmm0
|   1    | 1.0       |     |           |           |     |     | CP | rcpss xmm1, xmm1
|   1    | 1.0       |     |           |           |     |     | CP | rcpss xmm2, xmm2
|   1    | 1.0       |     |           |           |     |     | CP | rcpss xmm3, xmm3
|   1    | 1.0       |     |           |           |     |     | CP | rcpss xmm4, xmm4
|   1    | 1.0       |     |           |           |     |     | CP | rcpss xmm5, xmm5
|   1    | 1.0       |     |           |           |     |     | CP | rcpss xmm6, xmm6
|   1    | 1.0       |     |           |           |     |     | CP | rcpss xmm7, xmm7
|   1    | 1.0       |     |           |           |     |     | CP | rcpss xmm8, xmm8
|   1    | 1.0       |     |           |           |     |     | CP | rcpss xmm9, xmm9
|   1    | 1.0       |     |           |           |     |     | CP | rcpss xmm10, xmm10
|   1    | 1.0       |     |           |           |     |     | CP | rcpss xmm11, xmm11
|   1    | 1.0       |     |           |           |     |     | CP | rcpss xmm12, xmm12
Total Num Of Uops: 13

With the -no_interiteration flag

Throughput Analysis Report
--------------------------
Block Throughput: 1.00 Cycles       Throughput Bottleneck: Port0

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


| Num Of |              Ports pressure in cycles               |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |    |
---------------------------------------------------------------------
|   1    | 1.0       |     |           |           |     |     | CP | rcpss xmm0, xmm1
Total Num Of Uops: 1