SHLX (R64, M64, R64) - Port Usage (IACA 3.0)
With blocking instructions for ports {'0', '6'}:
Throughput Analysis Report
--------------------------
Block Throughput: 5.47 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 | 5.5 0.0 | 0.0 | 0.5 0.5 | 0.5 0.5 | 0.0 | 0.0 | 5.5 | 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 | | rorx r10d, r11d, 0x2
| 1 | 0.5 | | | | | | 0.5 | | rorx r12d, r11d, 0x2
| 1 | 0.5 | | | | | | 0.5 | | rorx ebx, r11d, 0x2
| 1 | 0.5 | | | | | | 0.5 | | rorx ecx, r11d, 0x2
| 1 | 0.5 | | | | | | 0.5 | | rorx edx, r11d, 0x2
| 1 | 0.5 | | | | | | 0.5 | | rorx r10d, r11d, 0x2
| 1 | 0.5 | | | | | | 0.5 | | rorx r12d, r11d, 0x2
| 1 | 0.5 | | | | | | 0.5 | | rorx ebx, r11d, 0x2
| 1 | 0.5 | | | | | | 0.5 | | rorx ecx, r11d, 0x2
| 1 | 0.5 | | | | | | 0.5 | | rorx edx, r11d, 0x2
| 2^ | 0.5 | | 0.5 0.5 | 0.5 0.5 | | | 0.5 | | shlx r8, qword ptr [r14], r9
Total Num Of Uops: 12
⇨ One μop that can only use ports {'0', '6'}
With blocking instructions for ports {'2', '3'}:
Throughput Analysis Report
--------------------------
Block Throughput: 5.51 Cycles Throughput Bottleneck: Backend
Loop Count: 100
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 | 0.0 | 0.5 | 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 | | shlx r8, qword ptr [r14], r9
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', '6'}:
Throughput Analysis Report
--------------------------
Block Throughput: 5.47 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 | 5.5 0.0 | 0.0 | 0.5 0.5 | 0.5 0.5 | 0.0 | 0.0 | 5.5 | 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 | | rorx r10d, r11d, 0x2
| 1 | 0.5 | | | | | | 0.5 | | rorx r12d, r11d, 0x2
| 1 | 0.5 | | | | | | 0.5 | | rorx ebx, r11d, 0x2
| 1 | 0.5 | | | | | | 0.5 | | rorx ecx, r11d, 0x2
| 1 | 0.5 | | | | | | 0.5 | | rorx edx, r11d, 0x2
| 1 | 0.5 | | | | | | 0.5 | | rorx r10d, r11d, 0x2
| 1 | 0.5 | | | | | | 0.5 | | rorx r12d, r11d, 0x2
| 1 | 0.5 | | | | | | 0.5 | | rorx ebx, r11d, 0x2
| 1 | 0.5 | | | | | | 0.5 | | rorx ecx, r11d, 0x2
| 1 | 0.5 | | | | | | 0.5 | | rorx edx, r11d, 0x2
| 2 | 0.5 | | 0.5 0.5 | 0.5 0.5 | | | 0.5 | | shlx r8, qword ptr [r14+r13*1], r9
Total Num Of Uops: 12
⇨ One μop that can only use ports {'0', '6'}
With blocking instructions for ports {'2', '3'}:
Throughput Analysis Report
--------------------------
Block Throughput: 5.51 Cycles Throughput Bottleneck: Backend
Loop Count: 100
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 | 0.0 | 0.5 | 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 | | shlx r8, qword ptr [r14+r13*1], r9
Total Num Of Uops: 12
⇨ One μop that can only use ports {'2', '3'}