ADC (AL, 0) - Port Usage (IACA 3.0)
With blocking instructions for ports {'0', '1'}:
Throughput Analysis Report
--------------------------
Block Throughput: 4.95 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 | 5.0 0.0 | 5.0 | 0.0 0.0 | 0.0 0.0 | 0.0 | 1.0 | 1.0 | 0.0 |
--------------------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
-----------------------------------------------------------------------------------------
| 1 | 1.0 | | | | | | | | pabsb xmm0, xmm1
| 1 | | 1.0 | | | | | | | pabsb xmm2, xmm1
| 1 | 1.0 | | | | | | | | pabsb xmm3, xmm1
| 1 | | 1.0 | | | | | | | pabsb xmm4, xmm1
| 1 | 1.0 | | | | | | | | pabsb xmm5, xmm1
| 1 | | 1.0 | | | | | | | pabsb xmm6, xmm1
| 1 | 1.0 | | | | | | | | pabsb xmm7, xmm1
| 1 | | 1.0 | | | | | | | pabsb xmm8, xmm1
| 1 | 1.0 | | | | | | | | pabsb xmm9, xmm1
| 1 | | 1.0 | | | | | | | pabsb xmm10, xmm1
| 2 | | | | | | 1.0 | 1.0 | | adc al, 0x0
Total Num Of Uops: 12
With blocking instructions for ports {'0', '5'}:
Throughput Analysis Report
--------------------------
Block Throughput: 4.95 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 | 5.0 0.0 | 1.0 | 0.0 0.0 | 0.0 0.0 | 0.0 | 5.0 | 1.0 | 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 | | | | | | 1.0 | | | movq mmx2, mmx1
| 1 | 1.0 | | | | | | | | movq mmx3, mmx1
| 1 | | | | | | 1.0 | | | movq mmx4, mmx1
| 1 | 1.0 | | | | | | | | movq mmx5, mmx1
| 1 | | | | | | 1.0 | | | movq mmx6, mmx1
| 1 | 1.0 | | | | | | | | movq mmx7, mmx1
| 1 | | | | | | 1.0 | | | movq mmx0, mmx1
| 1 | 1.0 | | | | | | | | movq mmx2, mmx1
| 1 | | | | | | 1.0 | | | movq mmx3, mmx1
| 2 | | 1.0 | | | | | 1.0 | | adc al, 0x0
Total Num Of Uops: 12
With blocking instructions for ports {'0', '6'}:
Throughput Analysis Report
--------------------------
Block Throughput: 9.95 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 | 5.5 0.0 | 0.5 | 0.0 0.0 | 0.0 0.0 | 0.0 | 0.5 | 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 | | sar r12b, 0x0
| 1 | 0.5 | | | | | | 0.5 | | sar r12b, 0x0
| 1 | 0.5 | | | | | | 0.5 | | sar r12b, 0x0
| 1 | 0.5 | | | | | | 0.5 | | sar r12b, 0x0
| 1 | 0.5 | | | | | | 0.5 | | sar r12b, 0x0
| 1 | 0.5 | | | | | | 0.5 | | sar r12b, 0x0
| 1 | 0.5 | | | | | | 0.5 | | sar r12b, 0x0
| 1 | 0.5 | | | | | | 0.5 | | sar r12b, 0x0
| 1 | 0.5 | | | | | | 0.5 | | sar r12b, 0x0
| 1 | 0.5 | | | | | | 0.5 | | sar r12b, 0x0
| 2 | 0.5 | 0.5 | | | | 0.5 | 0.5 | | adc al, 0x0
Total Num Of Uops: 12
⇨ One μop that can only use ports {'0', '6'}
With blocking instructions for ports {'1', '5'}:
Throughput Analysis Report
--------------------------
Block Throughput: 4.95 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 | 1.0 0.0 | 5.0 | 0.0 0.0 | 0.0 0.0 | 0.0 | 5.0 | 1.0 | 0.0 |
--------------------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
-----------------------------------------------------------------------------------------
| 1 | | 1.0 | | | | | | | lea r8w, ptr [r14]
| 1 | | | | | | 1.0 | | | lea r9w, ptr [r14]
| 1 | | 1.0 | | | | | | | lea r10w, ptr [r14]
| 1 | | | | | | 1.0 | | | lea r11w, ptr [r14]
| 1 | | 1.0 | | | | | | | lea r12w, ptr [r14]
| 1 | | | | | | 1.0 | | | lea bx, ptr [r14]
| 1 | | 1.0 | | | | | | | lea cx, ptr [r14]
| 1 | | | | | | 1.0 | | | lea dx, ptr [r14]
| 1 | | 1.0 | | | | | | | lea r8w, ptr [r14]
| 1 | | | | | | 1.0 | | | lea r9w, ptr [r14]
| 2 | 1.0 | | | | | | 1.0 | | adc al, 0x0
Total Num Of Uops: 12
With blocking instructions for ports {'0', '1', '5'}:
Throughput Analysis Report
--------------------------
Block Throughput: 3.32 Cycles Throughput Bottleneck: FrontEnd
Loop Count: 22
Port Binding In Cycles Per Iteration:
--------------------------------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
--------------------------------------------------------------------------------------------------
| Cycles | 3.3 0.0 | 3.4 | 0.0 0.0 | 0.0 0.0 | 0.0 | 3.3 | 2.0 | 0.0 |
--------------------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
-----------------------------------------------------------------------------------------
| 1 | 0.3 | 0.4 | | | | 0.3 | | | addpd xmm0, xmm1
| 1 | 0.3 | 0.3 | | | | 0.4 | | | addpd xmm2, xmm1
| 1 | 0.4 | 0.3 | | | | 0.3 | | | addpd xmm3, xmm1
| 1 | 0.3 | 0.4 | | | | 0.3 | | | addpd xmm4, xmm1
| 1 | 0.3 | 0.3 | | | | 0.4 | | | addpd xmm5, xmm1
| 1 | 0.4 | 0.3 | | | | 0.3 | | | addpd xmm6, xmm1
| 1 | 0.3 | 0.4 | | | | 0.3 | | | addpd xmm7, xmm1
| 1 | 0.3 | 0.3 | | | | 0.4 | | | addpd xmm8, xmm1
| 1 | 0.4 | 0.3 | | | | 0.3 | | | addpd xmm9, xmm1
| 1 | 0.3 | 0.4 | | | | 0.3 | | | addpd xmm10, xmm1
| 2 | | | | | | | 2.0 | | adc al, 0x0
Total Num Of Uops: 12
With blocking instructions for ports {'0', '1', '5', '6'}:
Throughput Analysis Report
--------------------------
Block Throughput: 3.00 Cycles Throughput Bottleneck: Dependency chains
Loop Count: 22
Port Binding In Cycles Per Iteration:
--------------------------------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
--------------------------------------------------------------------------------------------------
| Cycles | 3.0 0.0 | 3.0 | 0.0 0.0 | 0.0 0.0 | 0.0 | 3.0 | 3.0 | 0.0 |
--------------------------------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | 6 | 7 |
-----------------------------------------------------------------------------------------
| 1 | 1.0 | | | | | | | | mov bh, 0x0
| 1 | | 1.0 | | | | | | | mov ch, 0x0
| 1 | | | | | | 1.0 | | | mov dh, 0x0
| 1 | | | | | | | 1.0 | | mov bh, 0x0
| 1 | 1.0 | | | | | | | | mov ch, 0x0
| 1 | | 1.0 | | | | | | | mov dh, 0x0
| 1 | | | | | | 1.0 | | | mov bh, 0x0
| 1 | | | | | | | 1.0 | | mov ch, 0x0
| 1 | 1.0 | | | | | | | | mov dh, 0x0
| 1 | | 1.0 | | | | | | | mov bh, 0x0
| 2 | | | | | | 1.0 | 1.0 | | adc al, 0x0
Total Num Of Uops: 12
⇨ One μop that can only use ports {'0', '1', '5', '6'}