PDEP (R64, R64, R64) - Throughput and Uops (IACA 3.0)

With different registers for different operands

With 1 independent instruction

Throughput Analysis Report
--------------------------
Block Throughput: 2.95 Cycles       Throughput Bottleneck: Backend
Loop Count:  69
Port Binding In Cycles Per Iteration:
--------------------------------------------------------------------------------------------------
|  Port  |   0   -  DV   |   1   |   2   -  D    |   3   -  D    |   4   |   5   |   6   |   7   |
--------------------------------------------------------------------------------------------------
| Cycles |  0.0     0.0  |  1.0  |  0.0     0.0  |  0.0     0.0  |  0.0  |  0.0  |  0.0  |  0.0  |
--------------------------------------------------------------------------------------------------

| Num Of   |                    Ports pressure in cycles                         |      |
|  Uops    |  0  - DV    |  1   |  2  -  D    |  3  -  D    |  4   |  5   |  6   |  7   |
-----------------------------------------------------------------------------------------
|   1      |             | 1.0  |             |             |      |      |      |      | pdep r8, r9, r10
Total Num Of Uops: 1

With 11 independent instructions

Throughput Analysis Report
--------------------------
Block Throughput: 10.95 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 |  0.0     0.0  | 11.0  |  0.0     0.0  |  0.0     0.0  |  0.0  |  0.0  |  0.0  |  0.0  |
--------------------------------------------------------------------------------------------------

| Num Of   |                    Ports pressure in cycles                         |      |
|  Uops    |  0  - DV    |  1   |  2  -  D    |  3  -  D    |  4   |  5   |  6   |  7   |
-----------------------------------------------------------------------------------------
|   1      |             | 1.0  |             |             |      |      |      |      | pdep r8, r9, r10
|   1      |             | 1.0  |             |             |      |      |      |      | pdep r11, r9, r10
|   1      |             | 1.0  |             |             |      |      |      |      | pdep r12, r9, r10
|   1      |             | 1.0  |             |             |      |      |      |      | pdep r13, r9, r10
|   1      |             | 1.0  |             |             |      |      |      |      | pdep r14, r9, r10
|   1      |             | 1.0  |             |             |      |      |      |      | pdep rbx, r9, r10
|   1      |             | 1.0  |             |             |      |      |      |      | pdep rcx, r9, r10
|   1      |             | 1.0  |             |             |      |      |      |      | pdep rdx, r9, r10
|   1      |             | 1.0  |             |             |      |      |      |      | pdep rdi, r9, r10
|   1      |             | 1.0  |             |             |      |      |      |      | pdep rsi, r9, r10
|   1      |             | 1.0  |             |             |      |      |      |      | pdep rbp, r9, r10
Total Num Of Uops: 11

With the same register for for different operands

With 1 independent instruction

Throughput Analysis Report
--------------------------
Block Throughput: 2.95 Cycles       Throughput Bottleneck: Backend
Loop Count:  69
Port Binding In Cycles Per Iteration:
--------------------------------------------------------------------------------------------------
|  Port  |   0   -  DV   |   1   |   2   -  D    |   3   -  D    |   4   |   5   |   6   |   7   |
--------------------------------------------------------------------------------------------------
| Cycles |  0.0     0.0  |  1.0  |  0.0     0.0  |  0.0     0.0  |  0.0  |  0.0  |  0.0  |  0.0  |
--------------------------------------------------------------------------------------------------

| Num Of   |                    Ports pressure in cycles                         |      |
|  Uops    |  0  - DV    |  1   |  2  -  D    |  3  -  D    |  4   |  5   |  6   |  7   |
-----------------------------------------------------------------------------------------
|   1      |             | 1.0  |             |             |      |      |      |      | pdep r8, r8, r8
Total Num Of Uops: 1

With 13 independent instructions

Throughput Analysis Report
--------------------------
Block Throughput: 12.95 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 |  0.0     0.0  | 13.0  |  0.0     0.0  |  0.0     0.0  |  0.0  |  0.0  |  0.0  |  0.0  |
--------------------------------------------------------------------------------------------------

| Num Of   |                    Ports pressure in cycles                         |      |
|  Uops    |  0  - DV    |  1   |  2  -  D    |  3  -  D    |  4   |  5   |  6   |  7   |
-----------------------------------------------------------------------------------------
|   1      |             | 1.0  |             |             |      |      |      |      | pdep r8, r8, r8
|   1      |             | 1.0  |             |             |      |      |      |      | pdep r9, r9, r9
|   1      |             | 1.0  |             |             |      |      |      |      | pdep r10, r10, r10
|   1      |             | 1.0  |             |             |      |      |      |      | pdep r11, r11, r11
|   1      |             | 1.0  |             |             |      |      |      |      | pdep r12, r12, r12
|   1      |             | 1.0  |             |             |      |      |      |      | pdep r13, r13, r13
|   1      |             | 1.0  |             |             |      |      |      |      | pdep r14, r14, r14
|   1      |             | 1.0  |             |             |      |      |      |      | pdep rbx, rbx, rbx
|   1      |             | 1.0  |             |             |      |      |      |      | pdep rcx, rcx, rcx
|   1      |             | 1.0  |             |             |      |      |      |      | pdep rdx, rdx, rdx
|   1      |             | 1.0  |             |             |      |      |      |      | pdep rdi, rdi, rdi
|   1      |             | 1.0  |             |             |      |      |      |      | pdep rsi, rsi, rsi
|   1      |             | 1.0  |             |             |      |      |      |      | pdep rbp, rbp, rbp
Total Num Of Uops: 13