VCVTPS2PD (ZMM, YMM) - Throughput and Uops (IACA 3.0)

With different registers for different operands

With 1 independent instruction

Throughput Analysis Report
--------------------------
Block Throughput: 0.97 Cycles       Throughput Bottleneck: Dependency chains
Loop Count:  38
Port Binding In Cycles Per Iteration:
--------------------------------------------------------------------------------------------------
|  Port  |   0   -  DV   |   1   |   2   -  D    |   3   -  D    |   4   |   5   |   6   |   7   |
--------------------------------------------------------------------------------------------------
| Cycles |  1.0     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   |
-----------------------------------------------------------------------------------------
|   2      | 1.0         |      |             |             |      | 1.0  |      |      | vcvtps2pd zmm0, ymm1
Total Num Of Uops: 2

With 16 independent instructions

Throughput Analysis Report
--------------------------
Block Throughput: 15.95 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 | 16.0     0.0  |  0.0  |  0.0     0.0  |  0.0     0.0  |  0.0  | 16.0  |  0.0  |  0.0  |
--------------------------------------------------------------------------------------------------

| Num Of   |                    Ports pressure in cycles                         |      |
|  Uops    |  0  - DV    |  1   |  2  -  D    |  3  -  D    |  4   |  5   |  6   |  7   |
-----------------------------------------------------------------------------------------
|   2      | 1.0         |      |             |             |      | 1.0  |      |      | vcvtps2pd zmm0, ymm1
|   2      | 1.0         |      |             |             |      | 1.0  |      |      | vcvtps2pd zmm2, ymm1
|   2      | 1.0         |      |             |             |      | 1.0  |      |      | vcvtps2pd zmm3, ymm1
|   2      | 1.0         |      |             |             |      | 1.0  |      |      | vcvtps2pd zmm4, ymm1
|   2      | 1.0         |      |             |             |      | 1.0  |      |      | vcvtps2pd zmm5, ymm1
|   2      | 1.0         |      |             |             |      | 1.0  |      |      | vcvtps2pd zmm6, ymm1
|   2      | 1.0         |      |             |             |      | 1.0  |      |      | vcvtps2pd zmm7, ymm1
|   2      | 1.0         |      |             |             |      | 1.0  |      |      | vcvtps2pd zmm8, ymm1
|   2      | 1.0         |      |             |             |      | 1.0  |      |      | vcvtps2pd zmm9, ymm1
|   2      | 1.0         |      |             |             |      | 1.0  |      |      | vcvtps2pd zmm10, ymm1
|   2      | 1.0         |      |             |             |      | 1.0  |      |      | vcvtps2pd zmm11, ymm1
|   2      | 1.0         |      |             |             |      | 1.0  |      |      | vcvtps2pd zmm12, ymm1
|   2      | 1.0         |      |             |             |      | 1.0  |      |      | vcvtps2pd zmm16, ymm1
|   2      | 1.0         |      |             |             |      | 1.0  |      |      | vcvtps2pd zmm17, ymm1
|   2      | 1.0         |      |             |             |      | 1.0  |      |      | vcvtps2pd zmm18, ymm1
|   2      | 1.0         |      |             |             |      | 1.0  |      |      | vcvtps2pd zmm19, ymm1
Total Num Of Uops: 32

With the same register for for different operands

Throughput Analysis Report
--------------------------
Block Throughput: 4.89 Cycles       Throughput Bottleneck: Backend
Loop Count:  49
Port Binding In Cycles Per Iteration:
--------------------------------------------------------------------------------------------------
|  Port  |   0   -  DV   |   1   |   2   -  D    |   3   -  D    |   4   |   5   |   6   |   7   |
--------------------------------------------------------------------------------------------------
| Cycles |  1.0     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   |
-----------------------------------------------------------------------------------------
|   2      | 1.0         |      |             |             |      | 1.0  |      |      | vcvtps2pd zmm0, ymm0
Total Num Of Uops: 2