VCVTPS2PD (ZMM, YMM) - Throughput and Uops (IACA 2.3)


With different registers for different operands

With 1 independent instruction

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

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 |     |     | CP | vcvtps2pd zmm0, ymm1
Total Num Of Uops: 2

With 16 independent instructions


Throughput Analysis Report
--------------------------
Block Throughput: 16.00 Cycles       Throughput Bottleneck: Backend. Port0, Port5

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 |     |     | CP | vcvtps2pd zmm0, ymm1
|   2    | 1.0       |     |           |           |     | 1.0 |     |     | CP | vcvtps2pd zmm2, ymm1
|   2    | 1.0       |     |           |           |     | 1.0 |     |     | CP | vcvtps2pd zmm3, ymm1
|   2    | 1.0       |     |           |           |     | 1.0 |     |     | CP | vcvtps2pd zmm4, ymm1
|   2    | 1.0       |     |           |           |     | 1.0 |     |     | CP | vcvtps2pd zmm5, ymm1
|   2    | 1.0       |     |           |           |     | 1.0 |     |     | CP | vcvtps2pd zmm6, ymm1
|   2    | 1.0       |     |           |           |     | 1.0 |     |     | CP | vcvtps2pd zmm7, ymm1
|   2    | 1.0       |     |           |           |     | 1.0 |     |     | CP | vcvtps2pd zmm8, ymm1
|   2    | 1.0       |     |           |           |     | 1.0 |     |     | CP | vcvtps2pd zmm9, ymm1
|   2    | 1.0       |     |           |           |     | 1.0 |     |     | CP | vcvtps2pd zmm10, ymm1
|   2    | 1.0       |     |           |           |     | 1.0 |     |     | CP | vcvtps2pd zmm11, ymm1
|   2    | 1.0       |     |           |           |     | 1.0 |     |     | CP | vcvtps2pd zmm12, ymm1
|   2    | 1.0       |     |           |           |     | 1.0 |     |     | CP | vcvtps2pd zmm16, ymm1
|   2    | 1.0       |     |           |           |     | 1.0 |     |     | CP | vcvtps2pd zmm17, ymm1
|   2    | 1.0       |     |           |           |     | 1.0 |     |     | CP | vcvtps2pd zmm18, ymm1
|   2    | 1.0       |     |           |           |     | 1.0 |     |     | CP | vcvtps2pd zmm19, ymm1
Total Num Of Uops: 32

With the same register for for different operands

Throughput Analysis Report
--------------------------
Block Throughput: 4.76 Cycles       Throughput Bottleneck: FrontEnd

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 |     |     | CP | vcvtps2pd zmm0, ymm0
Total Num Of Uops: 2