VPHADDD (YMM, YMM, YMM) - Throughput and Uops (IACA 3.0)

With different registers for different operands

With 1 independent instruction

Throughput Analysis Report
--------------------------
Block Throughput: 1.92 Cycles       Throughput Bottleneck: Dependency chains
Loop Count:  27
Port Binding In Cycles Per Iteration:
--------------------------------------------------------------------------------------------------
|  Port  |   0   -  DV   |   1   |   2   -  D    |   3   -  D    |   4   |   5   |   6   |   7   |
--------------------------------------------------------------------------------------------------
| Cycles |  0.5     0.0  |  0.5  |  0.0     0.0  |  0.0     0.0  |  0.0  |  2.0  |  0.0  |  0.0  |
--------------------------------------------------------------------------------------------------

| Num Of   |                    Ports pressure in cycles                         |      |
|  Uops    |  0  - DV    |  1   |  2  -  D    |  3  -  D    |  4   |  5   |  6   |  7   |
-----------------------------------------------------------------------------------------
|   3      | 0.5         | 0.5  |             |             |      | 2.0  |      |      | vphaddd ymm0, ymm1, ymm2
Total Num Of Uops: 3

With 11 independent instructions

Throughput Analysis Report
--------------------------
Block Throughput: 21.89 Cycles       Throughput Bottleneck: Backend
Loop Count:  22
Port Binding In Cycles Per Iteration:
--------------------------------------------------------------------------------------------------
|  Port  |   0   -  DV   |   1   |   2   -  D    |   3   -  D    |   4   |   5   |   6   |   7   |
--------------------------------------------------------------------------------------------------
| Cycles |  5.5     0.0  |  5.5  |  0.0     0.0  |  0.0     0.0  |  0.0  | 22.0  |  0.0  |  0.0  |
--------------------------------------------------------------------------------------------------

| Num Of   |                    Ports pressure in cycles                         |      |
|  Uops    |  0  - DV    |  1   |  2  -  D    |  3  -  D    |  4   |  5   |  6   |  7   |
-----------------------------------------------------------------------------------------
|   3      | 0.5         | 0.5  |             |             |      | 2.0  |      |      | vphaddd ymm0, ymm1, ymm2
|   3      | 0.5         | 0.5  |             |             |      | 2.0  |      |      | vphaddd ymm3, ymm1, ymm2
|   3      | 0.5         | 0.5  |             |             |      | 2.0  |      |      | vphaddd ymm4, ymm1, ymm2
|   3      | 0.5         | 0.5  |             |             |      | 2.0  |      |      | vphaddd ymm5, ymm1, ymm2
|   3      | 0.5         | 0.5  |             |             |      | 2.0  |      |      | vphaddd ymm6, ymm1, ymm2
|   3      | 0.5         | 0.5  |             |             |      | 2.0  |      |      | vphaddd ymm7, ymm1, ymm2
|   3      | 0.5         | 0.5  |             |             |      | 2.0  |      |      | vphaddd ymm8, ymm1, ymm2
|   3      | 0.5         | 0.5  |             |             |      | 2.0  |      |      | vphaddd ymm9, ymm1, ymm2
|   3      | 0.5         | 0.5  |             |             |      | 2.0  |      |      | vphaddd ymm10, ymm1, ymm2
|   3      | 0.5         | 0.5  |             |             |      | 2.0  |      |      | vphaddd ymm11, ymm1, ymm2
|   3      | 0.5         | 0.5  |             |             |      | 2.0  |      |      | vphaddd ymm12, ymm1, ymm2
Total Num Of Uops: 33

With the same register for for different operands

Throughput Analysis Report
--------------------------
Block Throughput: 2.92 Cycles       Throughput Bottleneck: Backend
Loop Count:  39
Port Binding In Cycles Per Iteration:
--------------------------------------------------------------------------------------------------
|  Port  |   0   -  DV   |   1   |   2   -  D    |   3   -  D    |   4   |   5   |   6   |   7   |
--------------------------------------------------------------------------------------------------
| Cycles |  0.5     0.0  |  0.5  |  0.0     0.0  |  0.0     0.0  |  0.0  |  2.0  |  0.0  |  0.0  |
--------------------------------------------------------------------------------------------------

| Num Of   |                    Ports pressure in cycles                         |      |
|  Uops    |  0  - DV    |  1   |  2  -  D    |  3  -  D    |  4   |  5   |  6   |  7   |
-----------------------------------------------------------------------------------------
|   3      | 0.5         | 0.5  |             |             |      | 2.0  |      |      | vphaddd ymm0, ymm0, ymm0
Total Num Of Uops: 3