VDIVPS (ZMM, ZMM, ZMM) - Port Usage (IACA 3.0)
With blocking instructions for port '0':
Throughput Analysis Report
--------------------------
Block Throughput: 20.00 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 | 20.0 10.0 | 0.0 | 0.0 0.0 | 0.0 0.0 | 0.0 | 1.0 | 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 | | | | | | | | movd r8d, mmx0
| 1 | 1.0 | | | | | | | | movd r9d, mmx0
| 1 | 1.0 | | | | | | | | movd r10d, mmx0
| 1 | 1.0 | | | | | | | | movd r11d, mmx0
| 1 | 1.0 | | | | | | | | movd r12d, mmx0
| 1 | 1.0 | | | | | | | | movd ebx, mmx0
| 1 | 1.0 | | | | | | | | movd ecx, mmx0
| 1 | 1.0 | | | | | | | | movd edx, mmx0
| 1 | 1.0 | | | | | | | | movd r8d, mmx0
| 1 | 1.0 | | | | | | | | movd r9d, mmx0
| 1 | 1.0 | | | | | | | | movd r10d, mmx0
| 1 | 1.0 | | | | | | | | movd r11d, mmx0
| 1 | 1.0 | | | | | | | | movd r12d, mmx0
| 1 | 1.0 | | | | | | | | movd ebx, mmx0
| 1 | 1.0 | | | | | | | | movd ecx, mmx0
| 1 | 1.0 | | | | | | | | movd edx, mmx0
| 1 | 1.0 | | | | | | | | movd r8d, mmx0
| 1 | 1.0 | | | | | | | | movd r9d, mmx0
| 3 | 2.0 10.0 | | | | | 1.0 | | | vdivps zmm2, zmm0, zmm1
Total Num Of Uops: 21
⇨ 2 μops that can only use port '0'
With blocking instructions for port '5':
Throughput Analysis Report
--------------------------
Block Throughput: 17.95 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 | 3.0 15.0 | 0.0 | 0.0 0.0 | 0.0 0.0 | 0.0 | 18.0 | 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 | | | movd mmx0, r8d
| 1 | | | | | | 1.0 | | | movd mmx1, r8d
| 1 | | | | | | 1.0 | | | movd mmx2, r8d
| 1 | | | | | | 1.0 | | | movd mmx3, r8d
| 1 | | | | | | 1.0 | | | movd mmx4, r8d
| 1 | | | | | | 1.0 | | | movd mmx5, r8d
| 1 | | | | | | 1.0 | | | movd mmx6, r8d
| 1 | | | | | | 1.0 | | | movd mmx7, r8d
| 1 | | | | | | 1.0 | | | movd mmx0, r8d
| 1 | | | | | | 1.0 | | | movd mmx1, r8d
| 1 | | | | | | 1.0 | | | movd mmx2, r8d
| 1 | | | | | | 1.0 | | | movd mmx3, r8d
| 1 | | | | | | 1.0 | | | movd mmx4, r8d
| 1 | | | | | | 1.0 | | | movd mmx5, r8d
| 1 | | | | | | 1.0 | | | movd mmx6, r8d
| 1 | | | | | | 1.0 | | | movd mmx7, r8d
| 1 | | | | | | 1.0 | | | movd mmx0, r8d
| 1 | | | | | | 1.0 | | | movd mmx1, r8d
| 3 | 3.0 15.0 | | | | | | | | vdivps zmm2, zmm0, zmm1
Total Num Of Uops: 21
With blocking instructions for ports {'0', '5'}:
Throughput Analysis Report
--------------------------
Block Throughput: 19.49 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 | 19.5 10.0 | 0.0 | 0.0 0.0 | 0.0 0.0 | 0.0 | 19.5 | 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 | | | movq mmx0, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx2, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx3, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx4, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx5, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx6, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx7, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx0, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx2, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx3, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx4, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx5, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx6, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx7, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx0, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx2, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx3, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx4, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx5, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx6, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx7, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx0, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx2, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx3, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx4, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx5, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx6, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx7, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx0, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx2, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx3, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx4, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx5, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx6, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx7, mmx1
| 1 | 0.5 | | | | | 0.5 | | | movq mmx0, mmx1
| 3 | 2.0 10.0 | | | | | 1.0 | | | vdivps zmm2, zmm0, zmm1
Total Num Of Uops: 39
⇨ One μop that can only use ports {'0', '5'}