CALL_NEAR (M64) - 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 | 4.0 1.0 | 4.0 1.0 | 11.0 | 0.0 | 0.0 | 4.0 |
--------------------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
-----------------------------------------------------------------------------------------
| 2^ | | | | | 1.0 | | | 1.0 | mov qword ptr [r14+0x40], r8
| 2^ | | | | 1.0 | 1.0 | | | | mov qword ptr [r14+0x48], r8
| 2^ | | | | | 1.0 | | | 1.0 | mov qword ptr [r14+0x50], r8
| 2^ | | | 1.0 | | 1.0 | | | | mov qword ptr [r14+0x58], r8
| 2^ | | | | 1.0 | 1.0 | | | | mov qword ptr [r14+0x60], r8
| 2^ | | | | | 1.0 | | | 1.0 | mov qword ptr [r14+0x68], r8
| 2^ | | | 1.0 | | 1.0 | | | | mov qword ptr [r14+0x70], r8
| 2^ | | | | 1.0 | 1.0 | | | | mov qword ptr [r14+0x78], r8
| 2^ | | | | | 1.0 | | | 1.0 | mov qword ptr [r14+0x80], r8
| 2^ | | | 1.0 | | 1.0 | | | | mov qword ptr [r14+0x88], r8
| 5^# | | | 1.0 1.0 | 1.0 1.0 | 1.0 | | | | call qword ptr [r14]
Total Num Of Uops: 25
⇨ One μop that can only use port '4'
With blocking instructions for ports {'2', '3'}:
Throughput Analysis Report
--------------------------
Block Throughput: 6.00 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 | 6.0 6.0 | 6.0 6.0 | 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 | | | 1.0 1.0 | | | | | | mov bh, byte ptr [rdi+0x40]
| 1 | | | | 1.0 1.0 | | | | | mov ch, byte ptr [rdi+0x41]
| 1 | | | 1.0 1.0 | | | | | | mov dh, byte ptr [rdi+0x42]
| 1 | | | | 1.0 1.0 | | | | | mov ah, byte ptr [rdi+0x43]
| 1 | | | 1.0 1.0 | | | | | | mov bh, byte ptr [rdi+0x40]
| 1 | | | | 1.0 1.0 | | | | | mov ch, byte ptr [rdi+0x41]
| 1 | | | 1.0 1.0 | | | | | | mov dh, byte ptr [rdi+0x42]
| 1 | | | | 1.0 1.0 | | | | | mov ah, byte ptr [rdi+0x43]
| 1 | | | 1.0 1.0 | | | | | | mov bh, byte ptr [rdi+0x40]
| 1 | | | | 1.0 1.0 | | | | | mov ch, byte ptr [rdi+0x41]
| 5^# | | | 1.0 1.0 | 1.0 1.0 | 1.0 | | | | call qword ptr [r14]
Total Num Of Uops: 15
⇨ 2 μops that can only use ports {'2', '3'}
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 | 4.0 1.0 | 4.0 1.0 | 11.0 | 0.0 | 0.0 | 4.0 |
--------------------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
-----------------------------------------------------------------------------------------
| 2^ | | | | | 1.0 | | | 1.0 | mov qword ptr [r14+0x40], r8
| 2^ | | | | 1.0 | 1.0 | | | | mov qword ptr [r14+0x48], r8
| 2^ | | | | | 1.0 | | | 1.0 | mov qword ptr [r14+0x50], r8
| 2^ | | | 1.0 | | 1.0 | | | | mov qword ptr [r14+0x58], r8
| 2^ | | | | 1.0 | 1.0 | | | | mov qword ptr [r14+0x60], r8
| 2^ | | | | | 1.0 | | | 1.0 | mov qword ptr [r14+0x68], r8
| 2^ | | | 1.0 | | 1.0 | | | | mov qword ptr [r14+0x70], r8
| 2^ | | | | 1.0 | 1.0 | | | | mov qword ptr [r14+0x78], r8
| 2^ | | | | | 1.0 | | | 1.0 | mov qword ptr [r14+0x80], r8
| 2^ | | | 1.0 | | 1.0 | | | | mov qword ptr [r14+0x88], r8
| 5^# | | | 1.0 1.0 | 1.0 1.0 | 1.0 | | | | call qword ptr [r14]
Total Num Of Uops: 25
⇨ One μop that can only use port '4'
With blocking instructions for ports {'2', '3'}:
Throughput Analysis Report
--------------------------
Block Throughput: 6.00 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 | 6.0 6.0 | 6.0 6.0 | 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 | | | 1.0 1.0 | | | | | | mov bh, byte ptr [rdi+0x40]
| 1 | | | | 1.0 1.0 | | | | | mov ch, byte ptr [rdi+0x41]
| 1 | | | 1.0 1.0 | | | | | | mov dh, byte ptr [rdi+0x42]
| 1 | | | | 1.0 1.0 | | | | | mov ah, byte ptr [rdi+0x43]
| 1 | | | 1.0 1.0 | | | | | | mov bh, byte ptr [rdi+0x40]
| 1 | | | | 1.0 1.0 | | | | | mov ch, byte ptr [rdi+0x41]
| 1 | | | 1.0 1.0 | | | | | | mov dh, byte ptr [rdi+0x42]
| 1 | | | | 1.0 1.0 | | | | | mov ah, byte ptr [rdi+0x43]
| 1 | | | 1.0 1.0 | | | | | | mov bh, byte ptr [rdi+0x40]
| 1 | | | | 1.0 1.0 | | | | | mov ch, byte ptr [rdi+0x41]
| 5^# | | | 1.0 1.0 | 1.0 1.0 | 1.0 | | | | call qword ptr [r14]
Total Num Of Uops: 15
⇨ 2 μops that can only use ports {'2', '3'}