VPADDB (YMM, YMM, YMM) - Throughput and Uops (IACA 2.2)


With different registers for different operands

With 1 independent instruction

Throughput Analysis Report
--------------------------
Block Throughput: 0.50 Cycles       Throughput Bottleneck: Port1, Port5

Port Binding In Cycles Per Iteration:
---------------------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |  6   |  7   |
---------------------------------------------------------------------------------------
| Cycles | 0.0    0.0  | 0.5  | 0.0    0.0  | 0.0    0.0  | 0.0  | 0.5  | 0.0  | 0.0  |
---------------------------------------------------------------------------------------


| Num Of |                    Ports pressure in cycles                     |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |  6  |  7  |    |
---------------------------------------------------------------------------------
|   1    |           | 0.5 |           |           |     | 0.5 |     |     | CP | vpaddb ymm0, ymm1, ymm2
Total Num Of Uops: 1

With 11 independent instructions


Throughput Analysis Report
--------------------------
Block Throughput: 5.50 Cycles       Throughput Bottleneck: Port1, Port5

Port Binding In Cycles Per Iteration:
---------------------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |  6   |  7   |
---------------------------------------------------------------------------------------
| Cycles | 0.0    0.0  | 5.5  | 0.0    0.0  | 0.0    0.0  | 0.0  | 5.5  | 0.0  | 0.0  |
---------------------------------------------------------------------------------------


| Num Of |                    Ports pressure in cycles                     |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |  6  |  7  |    |
---------------------------------------------------------------------------------
|   1    |           | 0.5 |           |           |     | 0.5 |     |     | CP | vpaddb ymm0, ymm1, ymm2
|   1    |           | 0.5 |           |           |     | 0.5 |     |     | CP | vpaddb ymm3, ymm1, ymm2
|   1    |           | 0.5 |           |           |     | 0.5 |     |     | CP | vpaddb ymm4, ymm1, ymm2
|   1    |           | 0.5 |           |           |     | 0.5 |     |     | CP | vpaddb ymm5, ymm1, ymm2
|   1    |           | 0.5 |           |           |     | 0.5 |     |     | CP | vpaddb ymm6, ymm1, ymm2
|   1    |           | 0.5 |           |           |     | 0.5 |     |     | CP | vpaddb ymm7, ymm1, ymm2
|   1    |           | 0.5 |           |           |     | 0.5 |     |     | CP | vpaddb ymm8, ymm1, ymm2
|   1    |           | 0.5 |           |           |     | 0.5 |     |     | CP | vpaddb ymm9, ymm1, ymm2
|   1    |           | 0.5 |           |           |     | 0.5 |     |     | CP | vpaddb ymm10, ymm1, ymm2
|   1    |           | 0.5 |           |           |     | 0.5 |     |     | CP | vpaddb ymm11, ymm1, ymm2
|   1    |           | 0.5 |           |           |     | 0.5 |     |     | CP | vpaddb ymm12, ymm1, ymm2
Total Num Of Uops: 11

With the same register for for different operands

Throughput Analysis Report
--------------------------
Block Throughput: 1.00 Cycles       Throughput Bottleneck: Dependency chains (possibly between iterations)

Port Binding In Cycles Per Iteration:
---------------------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |  6   |  7   |
---------------------------------------------------------------------------------------
| Cycles | 0.0    0.0  | 0.5  | 0.0    0.0  | 0.0    0.0  | 0.0  | 0.5  | 0.0  | 0.0  |
---------------------------------------------------------------------------------------


| Num Of |                    Ports pressure in cycles                     |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |  6  |  7  |    |
---------------------------------------------------------------------------------
|   1    |           | 0.5 |           |           |     | 0.5 |     |     | CP | vpaddb ymm0, ymm0, ymm0
Total Num Of Uops: 1

With the -no_interiteration flag

Throughput Analysis Report
--------------------------
Block Throughput: 0.50 Cycles       Throughput Bottleneck: Port1, Port5

Port Binding In Cycles Per Iteration:
---------------------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |  6   |  7   |
---------------------------------------------------------------------------------------
| Cycles | 0.0    0.0  | 0.5  | 0.0    0.0  | 0.0    0.0  | 0.0  | 0.5  | 0.0  | 0.0  |
---------------------------------------------------------------------------------------


| Num Of |                    Ports pressure in cycles                     |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |  6  |  7  |    |
---------------------------------------------------------------------------------
|   1    |           | 0.5 |           |           |     | 0.5 |     |     | CP | vpaddb ymm0, ymm1, ymm2
Total Num Of Uops: 1