BZHI (R32, R32, R32) - Throughput and Uops (IACA 3.0)

With different registers for different operands

With 1 independent instruction

Throughput Analysis Report
--------------------------
Block Throughput: 0.49 Cycles       Throughput Bottleneck: Dependency chains
Loop Count:  44
Port Binding In Cycles Per Iteration:
--------------------------------------------------------------------------------------------------
|  Port  |   0   -  DV   |   1   |   2   -  D    |   3   -  D    |   4   |   5   |   6   |   7   |
--------------------------------------------------------------------------------------------------
| Cycles |  0.0     0.0  |  0.5  |  0.0     0.0  |  0.0     0.0  |  0.0  |  0.5  |  0.0  |  0.0  |
--------------------------------------------------------------------------------------------------

| Num Of   |                    Ports pressure in cycles                         |      |
|  Uops    |  0  - DV    |  1   |  2  -  D    |  3  -  D    |  4   |  5   |  6   |  7   |
-----------------------------------------------------------------------------------------
|   1      |             | 0.5  |             |             |      | 0.5  |      |      | bzhi r8d, r9d, r10d
Total Num Of Uops: 1

With 11 independent instructions

Throughput Analysis Report
--------------------------
Block Throughput: 5.47 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  |  5.5  |  0.0     0.0  |  0.0     0.0  |  0.0  |  5.5  |  0.0  |  0.0  |
--------------------------------------------------------------------------------------------------

| Num Of   |                    Ports pressure in cycles                         |      |
|  Uops    |  0  - DV    |  1   |  2  -  D    |  3  -  D    |  4   |  5   |  6   |  7   |
-----------------------------------------------------------------------------------------
|   1      |             | 0.5  |             |             |      | 0.5  |      |      | bzhi r8d, r9d, r10d
|   1      |             | 0.5  |             |             |      | 0.5  |      |      | bzhi r11d, r9d, r10d
|   1      |             | 0.5  |             |             |      | 0.5  |      |      | bzhi r12d, r9d, r10d
|   1      |             | 0.5  |             |             |      | 0.5  |      |      | bzhi r13d, r9d, r10d
|   1      |             | 0.5  |             |             |      | 0.5  |      |      | bzhi r14d, r9d, r10d
|   1      |             | 0.5  |             |             |      | 0.5  |      |      | bzhi ebx, r9d, r10d
|   1      |             | 0.5  |             |             |      | 0.5  |      |      | bzhi ecx, r9d, r10d
|   1      |             | 0.5  |             |             |      | 0.5  |      |      | bzhi edx, r9d, r10d
|   1      |             | 0.5  |             |             |      | 0.5  |      |      | bzhi edi, r9d, r10d
|   1      |             | 0.5  |             |             |      | 0.5  |      |      | bzhi esi, r9d, r10d
|   1      |             | 0.5  |             |             |      | 0.5  |      |      | bzhi ebp, r9d, r10d
Total Num Of Uops: 11

With the same register for for different operands

Throughput Analysis Report
--------------------------
Block Throughput: 0.98 Cycles       Throughput Bottleneck: Dependency chains
Loop Count:  52
Port Binding In Cycles Per Iteration:
--------------------------------------------------------------------------------------------------
|  Port  |   0   -  DV   |   1   |   2   -  D    |   3   -  D    |   4   |   5   |   6   |   7   |
--------------------------------------------------------------------------------------------------
| Cycles |  0.0     0.0  |  0.5  |  0.0     0.0  |  0.0     0.0  |  0.0  |  0.5  |  0.0  |  0.0  |
--------------------------------------------------------------------------------------------------

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