VPMULLQ (ZMM, ZMM, ZMM) - Throughput and Uops (IACA 3.0)
With different registers for different operands
With 1 independent instruction
Throughput Analysis Report
--------------------------
Block Throughput: 1.44 Cycles Throughput Bottleneck: Dependency chains
Loop Count: 35
Port Binding In Cycles Per Iteration:
--------------------------------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
--------------------------------------------------------------------------------------------------
| Cycles | 1.5 0.0 | 0.0 | 0.0 0.0 | 0.0 0.0 | 0.0 | 1.5 | 0.0 | 0.0 |
--------------------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
-----------------------------------------------------------------------------------------
| 3 | 1.5 | | | | | 1.5 | | | vpmullq zmm0, zmm1, zmm2
Total Num Of Uops: 3
With 16 independent instructions
Throughput Analysis Report
--------------------------
Block Throughput: 23.89 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 | 24.0 0.0 | 0.0 | 0.0 0.0 | 0.0 0.0 | 0.0 | 24.0 | 0.0 | 0.0 |
--------------------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
-----------------------------------------------------------------------------------------
| 3 | 2.0 | | | | | 1.0 | | | vpmullq zmm0, zmm1, zmm2
| 3 | 1.0 | | | | | 2.0 | | | vpmullq zmm3, zmm1, zmm2
| 3 | 2.0 | | | | | 1.0 | | | vpmullq zmm4, zmm1, zmm2
| 3 | 1.0 | | | | | 2.0 | | | vpmullq zmm5, zmm1, zmm2
| 3 | 2.0 | | | | | 1.0 | | | vpmullq zmm6, zmm1, zmm2
| 3 | 1.0 | | | | | 2.0 | | | vpmullq zmm7, zmm1, zmm2
| 3 | 2.0 | | | | | 1.0 | | | vpmullq zmm8, zmm1, zmm2
| 3 | 1.0 | | | | | 2.0 | | | vpmullq zmm9, zmm1, zmm2
| 3 | 2.0 | | | | | 1.0 | | | vpmullq zmm10, zmm1, zmm2
| 3 | 1.0 | | | | | 2.0 | | | vpmullq zmm11, zmm1, zmm2
| 3 | 2.0 | | | | | 1.0 | | | vpmullq zmm12, zmm1, zmm2
| 3 | 1.0 | | | | | 2.0 | | | vpmullq zmm16, zmm1, zmm2
| 3 | 2.0 | | | | | 1.0 | | | vpmullq zmm17, zmm1, zmm2
| 3 | 1.0 | | | | | 2.0 | | | vpmullq zmm18, zmm1, zmm2
| 3 | 2.0 | | | | | 1.0 | | | vpmullq zmm19, zmm1, zmm2
| 3 | 1.0 | | | | | 2.0 | | | vpmullq zmm20, zmm1, zmm2
Total Num Of Uops: 48
With the same register for for different operands
Throughput Analysis Report
--------------------------
Block Throughput: 11.66 Cycles Throughput Bottleneck: Backend
Loop Count: 38
Port Binding In Cycles Per Iteration:
--------------------------------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
--------------------------------------------------------------------------------------------------
| Cycles | 1.5 0.0 | 0.0 | 0.0 0.0 | 0.0 0.0 | 0.0 | 1.5 | 0.0 | 0.0 |
--------------------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
-----------------------------------------------------------------------------------------
| 3 | 1.5 | | | | | 1.5 | | | vpmullq zmm0, zmm0, zmm0
Total Num Of Uops: 3