RDRAND (R32) - Throughput and Uops (IACA 3.0)


With 1 independent instruction

Throughput Analysis Report
--------------------------
Block Throughput: 0.97 Cycles       Throughput Bottleneck: Dependency chains
Loop Count:  33
Port Binding In Cycles Per Iteration:
--------------------------------------------------------------------------------------------------
|  Port  |   0   -  DV   |   1   |   2   -  D    |   3   -  D    |   4   |   5   |   6   |   7   |
--------------------------------------------------------------------------------------------------
| Cycles |  1.0     0.0  |  1.0  |  0.5     0.5  |  0.5     0.5  |  0.0  |  1.0  |  1.0  |  0.0  |
--------------------------------------------------------------------------------------------------

| Num Of   |                    Ports pressure in cycles                         |      |
|  Uops    |  0  - DV    |  1   |  2  -  D    |  3  -  D    |  4   |  5   |  6   |  7   |
-----------------------------------------------------------------------------------------
|   5^     | 1.0         | 1.0  | 0.5     0.5 | 0.5     0.5 |      | 1.0  | 1.0  |      | rdrand r8d
Total Num Of Uops: 5

With 13 independent instructions


Throughput Analysis Report
--------------------------
Block Throughput: 12.95 Cycles       Throughput Bottleneck: Dependency chains
Loop Count:  22
Port Binding In Cycles Per Iteration:
--------------------------------------------------------------------------------------------------
|  Port  |   0   -  DV   |   1   |   2   -  D    |   3   -  D    |   4   |   5   |   6   |   7   |
--------------------------------------------------------------------------------------------------
| Cycles | 13.0     0.0  | 13.0  |  6.5     6.5  |  6.5     6.5  |  0.0  | 13.0  | 13.0  |  0.0  |
--------------------------------------------------------------------------------------------------

| Num Of   |                    Ports pressure in cycles                         |      |
|  Uops    |  0  - DV    |  1   |  2  -  D    |  3  -  D    |  4   |  5   |  6   |  7   |
-----------------------------------------------------------------------------------------
|   5^     | 1.0         | 1.0  | 0.5     0.5 | 0.5     0.5 |      | 1.0  | 1.0  |      | rdrand r8d
|   5^     | 1.0         | 1.0  | 0.5     0.5 | 0.5     0.5 |      | 1.0  | 1.0  |      | rdrand r9d
|   5^     | 1.0         | 1.0  | 0.5     0.5 | 0.5     0.5 |      | 1.0  | 1.0  |      | rdrand r10d
|   5^     | 1.0         | 1.0  | 0.5     0.5 | 0.5     0.5 |      | 1.0  | 1.0  |      | rdrand r11d
|   5^     | 1.0         | 1.0  | 0.5     0.5 | 0.5     0.5 |      | 1.0  | 1.0  |      | rdrand r12d
|   5^     | 1.0         | 1.0  | 0.5     0.5 | 0.5     0.5 |      | 1.0  | 1.0  |      | rdrand r13d
|   5^     | 1.0         | 1.0  | 0.5     0.5 | 0.5     0.5 |      | 1.0  | 1.0  |      | rdrand r14d
|   5^     | 1.0         | 1.0  | 0.5     0.5 | 0.5     0.5 |      | 1.0  | 1.0  |      | rdrand ebx
|   5^     | 1.0         | 1.0  | 0.5     0.5 | 0.5     0.5 |      | 1.0  | 1.0  |      | rdrand ecx
|   5^     | 1.0         | 1.0  | 0.5     0.5 | 0.5     0.5 |      | 1.0  | 1.0  |      | rdrand edx
|   5^     | 1.0         | 1.0  | 0.5     0.5 | 0.5     0.5 |      | 1.0  | 1.0  |      | rdrand edi
|   5^     | 1.0         | 1.0  | 0.5     0.5 | 0.5     0.5 |      | 1.0  | 1.0  |      | rdrand esi
|   5^     | 1.0         | 1.0  | 0.5     0.5 | 0.5     0.5 |      | 1.0  | 1.0  |      | rdrand ebp
Total Num Of Uops: 65