MOV (M32, I32) - Port Usage (IACA 3.0)
With blocking instructions for port '4':
Throughput Analysis Report
--------------------------
Block Throughput: 11.00 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 | 0.0 | 3.7 0.0 | 3.6 0.0 | 11.0 | 0.0 | 0.0 | 3.7 |
--------------------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
-----------------------------------------------------------------------------------------
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.4 | mov qword ptr [r14+0x40], r8
| 2^ | | | 0.4 | 0.3 | 1.0 | | | 0.3 | mov qword ptr [r14+0x48], r8
| 2^ | | | 0.3 | 0.4 | 1.0 | | | 0.3 | mov qword ptr [r14+0x50], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.4 | mov qword ptr [r14+0x58], r8
| 2^ | | | 0.4 | 0.3 | 1.0 | | | 0.3 | mov qword ptr [r14+0x60], r8
| 2^ | | | 0.3 | 0.4 | 1.0 | | | 0.3 | mov qword ptr [r14+0x68], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.4 | mov qword ptr [r14+0x70], r8
| 2^ | | | 0.4 | 0.3 | 1.0 | | | 0.3 | mov qword ptr [r14+0x78], r8
| 2^ | | | 0.3 | 0.4 | 1.0 | | | 0.3 | mov qword ptr [r14+0x80], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.4 | mov qword ptr [r14+0x88], r8
| 2^ | | | 0.4 | 0.3 | 1.0 | | | 0.3 | mov dword ptr [r14], 0x1000000
Total Num Of Uops: 22
⇨ One μop that can only use port '4'
With blocking instructions for ports {'2', '3', '7'}:
Throughput Analysis Report
--------------------------
Block Throughput: 11.00 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 | 0.0 | 3.7 0.0 | 3.6 0.0 | 11.0 | 0.0 | 0.0 | 3.7 |
--------------------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
-----------------------------------------------------------------------------------------
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.4 | mov qword ptr [r14+0x40], r8
| 2^ | | | 0.4 | 0.3 | 1.0 | | | 0.3 | mov qword ptr [r14+0x48], r8
| 2^ | | | 0.3 | 0.4 | 1.0 | | | 0.3 | mov qword ptr [r14+0x50], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.4 | mov qword ptr [r14+0x58], r8
| 2^ | | | 0.4 | 0.3 | 1.0 | | | 0.3 | mov qword ptr [r14+0x60], r8
| 2^ | | | 0.3 | 0.4 | 1.0 | | | 0.3 | mov qword ptr [r14+0x68], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.4 | mov qword ptr [r14+0x70], r8
| 2^ | | | 0.4 | 0.3 | 1.0 | | | 0.3 | mov qword ptr [r14+0x78], r8
| 2^ | | | 0.3 | 0.4 | 1.0 | | | 0.3 | mov qword ptr [r14+0x80], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.4 | mov qword ptr [r14+0x88], r8
| 2^ | | | 0.4 | 0.3 | 1.0 | | | 0.3 | mov dword ptr [r14], 0x1000000
Total Num Of Uops: 22
⇨ One μop that can only use ports {'2', '3', '7'}
With an indexed addressing mode
With blocking instructions for port '4':
Throughput Analysis Report
--------------------------
Block Throughput: 11.00 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 | 0.0 | 3.7 0.0 | 3.6 0.0 | 11.0 | 0.0 | 0.0 | 3.7 |
--------------------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
-----------------------------------------------------------------------------------------
| 2^ | | | | 0.3 | 1.0 | | | 0.7 | mov qword ptr [r14+0x40], r8
| 2^ | | | 0.4 | 0.3 | 1.0 | | | 0.3 | mov qword ptr [r14+0x48], r8
| 2^ | | | 0.3 | 0.4 | 1.0 | | | 0.3 | mov qword ptr [r14+0x50], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.4 | mov qword ptr [r14+0x58], r8
| 2^ | | | 0.4 | 0.3 | 1.0 | | | 0.3 | mov qword ptr [r14+0x60], r8
| 2^ | | | 0.3 | 0.4 | 1.0 | | | 0.3 | mov qword ptr [r14+0x68], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.4 | mov qword ptr [r14+0x70], r8
| 2^ | | | 0.4 | 0.3 | 1.0 | | | 0.3 | mov qword ptr [r14+0x78], r8
| 2^ | | | 0.3 | 0.4 | 1.0 | | | 0.3 | mov qword ptr [r14+0x80], r8
| 2^ | | | 0.3 | 0.3 | 1.0 | | | 0.4 | mov qword ptr [r14+0x88], r8
| 2 | | | 0.7 | 0.3 | 1.0 | | | | mov dword ptr [r14+r13*1], 0x1000000
Total Num Of Uops: 22
⇨ One μop that can only use port '4'
With blocking instructions for ports {'2', '3'}:
Throughput Analysis Report
--------------------------
Block Throughput: 5.45 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 | 0.0 0.0 | 0.0 | 5.5 5.0 | 5.5 5.0 | 1.0 | 0.0 | 0.0 | 0.0 |
--------------------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
-----------------------------------------------------------------------------------------
| 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 | 1.0 | | | | mov dword ptr [r14+r13*1], 0x1000000
Total Num Of Uops: 12
⇨ One μop that can only use ports {'2', '3'}