VADDPD (ZMM, ZMM, M512) - Port Usage (IACA 3.0)
With blocking instructions for ports {'0', '5'}:
Throughput Analysis Report
--------------------------
Block Throughput: 5.50 Cycles Throughput Bottleneck: Backend
Loop Count: 23
Port Binding In Cycles Per Iteration:
--------------------------------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
--------------------------------------------------------------------------------------------------
| Cycles | 5.5 0.0 | 0.0 | 0.5 0.5 | 0.5 0.5 | 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 | | | 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
| 2^ | 0.5 | | 0.5 0.5 | 0.5 0.5 | | 0.5 | | | vaddpd zmm0, zmm1, zmmword ptr [r14]
Total Num Of Uops: 12
⇨ One μop that can only use ports {'0', '5'}
With blocking instructions for ports {'2', '3'}:
Throughput Analysis Report
--------------------------
Block Throughput: 5.50 Cycles Throughput Bottleneck: Backend
Loop Count: 23
Port Binding In Cycles Per Iteration:
--------------------------------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
--------------------------------------------------------------------------------------------------
| Cycles | 0.5 0.0 | 0.0 | 5.5 5.5 | 5.5 5.5 | 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 | 0.5 0.5 | | | | | mov bh, byte ptr [rdi+0x40]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | | | mov ch, byte ptr [rdi+0x41]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | | | mov dh, byte ptr [rdi+0x42]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | | | mov ah, byte ptr [rdi+0x43]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | | | mov bh, byte ptr [rdi+0x40]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | | | mov ch, byte ptr [rdi+0x41]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | | | mov dh, byte ptr [rdi+0x42]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | | | mov ah, byte ptr [rdi+0x43]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | | | mov bh, byte ptr [rdi+0x40]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | | | mov ch, byte ptr [rdi+0x41]
| 2^ | 0.5 | | 0.5 0.5 | 0.5 0.5 | | 0.5 | | | vaddpd zmm0, zmm1, zmmword ptr [r14]
Total Num Of Uops: 12
⇨ One μop that can only use ports {'2', '3'}
With an indexed addressing mode
With blocking instructions for ports {'0', '5'}:
Throughput Analysis Report
--------------------------
Block Throughput: 5.50 Cycles Throughput Bottleneck: Backend
Loop Count: 23
Port Binding In Cycles Per Iteration:
--------------------------------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
--------------------------------------------------------------------------------------------------
| Cycles | 5.5 0.0 | 0.0 | 0.5 0.5 | 0.5 0.5 | 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 | | | 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
| 2 | 0.5 | | 0.5 0.5 | 0.5 0.5 | | 0.5 | | | vaddpd zmm0, zmm1, zmmword ptr [r14+r13*1]
Total Num Of Uops: 12
⇨ One μop that can only use ports {'0', '5'}
With blocking instructions for ports {'2', '3'}:
Throughput Analysis Report
--------------------------
Block Throughput: 5.50 Cycles Throughput Bottleneck: Backend
Loop Count: 23
Port Binding In Cycles Per Iteration:
--------------------------------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
--------------------------------------------------------------------------------------------------
| Cycles | 0.5 0.0 | 0.0 | 5.5 5.5 | 5.5 5.5 | 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 | 0.5 0.5 | | | | | mov bh, byte ptr [rdi+0x40]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | | | mov ch, byte ptr [rdi+0x41]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | | | mov dh, byte ptr [rdi+0x42]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | | | mov ah, byte ptr [rdi+0x43]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | | | mov bh, byte ptr [rdi+0x40]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | | | mov ch, byte ptr [rdi+0x41]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | | | mov dh, byte ptr [rdi+0x42]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | | | mov ah, byte ptr [rdi+0x43]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | | | mov bh, byte ptr [rdi+0x40]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | | | mov ch, byte ptr [rdi+0x41]
| 2 | 0.5 | | 0.5 0.5 | 0.5 0.5 | | 0.5 | | | vaddpd zmm0, zmm1, zmmword ptr [r14+r13*1]
Total Num Of Uops: 12
⇨ One μop that can only use ports {'2', '3'}