PEXT (R32, R32, M32) - Throughput and Uops (IACA 3.0)


With a non-indexed addressing mode

With 1 independent instruction

Throughput Analysis Report
--------------------------
Block Throughput: 3.00 Cycles       Throughput Bottleneck: Backend
Loop Count:  60
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  |  0.5     0.5  |  0.5     0.5  |  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   |
-----------------------------------------------------------------------------------------
|   2^     |             | 1.0  | 0.5     0.5 | 0.5     0.5 |      |      |      |      | pext r8d, r9d, dword ptr [r14]
Total Num Of Uops: 2

With 7 independent instructions


Throughput Analysis Report
--------------------------
Block Throughput: 7.00 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  |  7.0  |  3.5     3.5  |  3.5     3.5  |  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   |
-----------------------------------------------------------------------------------------
|   2^     |             | 1.0  | 0.5     0.5 | 0.5     0.5 |      |      |      |      | pext r8d, r9d, dword ptr [r14]
|   2^     |             | 1.0  | 0.5     0.5 | 0.5     0.5 |      |      |      |      | pext r10d, r9d, dword ptr [r14+0x4]
|   2^     |             | 1.0  | 0.5     0.5 | 0.5     0.5 |      |      |      |      | pext r11d, r9d, dword ptr [r14+0x8]
|   2^     |             | 1.0  | 0.5     0.5 | 0.5     0.5 |      |      |      |      | pext r12d, r9d, dword ptr [r14+0xc]
|   2^     |             | 1.0  | 0.5     0.5 | 0.5     0.5 |      |      |      |      | pext ebx, r9d, dword ptr [r14+0x10]
|   2^     |             | 1.0  | 0.5     0.5 | 0.5     0.5 |      |      |      |      | pext ecx, r9d, dword ptr [r14+0x14]
|   2^     |             | 1.0  | 0.5     0.5 | 0.5     0.5 |      |      |      |      | pext edx, r9d, dword ptr [r14+0x18]
Total Num Of Uops: 14

With an indexed addressing mode

With 1 independent instruction

Throughput Analysis Report
--------------------------
Block Throughput: 3.00 Cycles       Throughput Bottleneck: Backend
Loop Count:  60
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  |  0.5     0.5  |  0.5     0.5  |  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   |
-----------------------------------------------------------------------------------------
|   2      |             | 1.0  | 0.5     0.5 | 0.5     0.5 |      |      |      |      | pext r8d, r9d, dword ptr [r14+r13*1]
Total Num Of Uops: 2

With 7 independent instructions


Throughput Analysis Report
--------------------------
Block Throughput: 7.00 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  |  7.0  |  3.5     3.5  |  3.5     3.5  |  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   |
-----------------------------------------------------------------------------------------
|   2      |             | 1.0  | 0.5     0.5 | 0.5     0.5 |      |      |      |      | pext r8d, r9d, dword ptr [r14+r13*1]
|   2      |             | 1.0  | 0.5     0.5 | 0.5     0.5 |      |      |      |      | pext r10d, r9d, dword ptr [r14+r13*1+0x4]
|   2      |             | 1.0  | 0.5     0.5 | 0.5     0.5 |      |      |      |      | pext r11d, r9d, dword ptr [r14+r13*1+0x8]
|   2      |             | 1.0  | 0.5     0.5 | 0.5     0.5 |      |      |      |      | pext r12d, r9d, dword ptr [r14+r13*1+0xc]
|   2      |             | 1.0  | 0.5     0.5 | 0.5     0.5 |      |      |      |      | pext ebx, r9d, dword ptr [r14+r13*1+0x10]
|   2      |             | 1.0  | 0.5     0.5 | 0.5     0.5 |      |      |      |      | pext ecx, r9d, dword ptr [r14+r13*1+0x14]
|   2      |             | 1.0  | 0.5     0.5 | 0.5     0.5 |      |      |      |      | pext edx, r9d, dword ptr [r14+r13*1+0x18]
Total Num Of Uops: 14