ADD (M32, I32) - Port Usage (IACA 2.3)
With blocking instructions for port '4':
Throughput Analysis Report
--------------------------
Block Throughput: 11.00 Cycles Throughput Bottleneck: Backend. Port4
Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 |
-------------------------------------------------------------------------
| Cycles | 0.3 0.0 | 0.3 | 6.0 0.5 | 6.0 0.5 | 11.0 | 0.3 |
-------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | |
---------------------------------------------------------------------
| 2^ | | | 0.5 | 0.5 | 1.0 | | CP | mov qword ptr [r14+0x40], r8
| 2^ | | | | 1.0 | 1.0 | | CP | mov qword ptr [r14+0x48], r8
| 2^ | | | 1.0 | | 1.0 | | CP | mov qword ptr [r14+0x50], r8
| 2^ | | | | 1.0 | 1.0 | | CP | mov qword ptr [r14+0x58], r8
| 2^ | | | 1.0 | | 1.0 | | CP | mov qword ptr [r14+0x60], r8
| 2^ | | | | 1.0 | 1.0 | | CP | mov qword ptr [r14+0x68], r8
| 2^ | | | 1.0 | | 1.0 | | CP | mov qword ptr [r14+0x70], r8
| 2^ | | | | 1.0 | 1.0 | | CP | mov qword ptr [r14+0x78], r8
| 2^ | | | 1.0 | | 1.0 | | CP | mov qword ptr [r14+0x80], r8
| 2^ | | | | 1.0 | 1.0 | | CP | mov qword ptr [r14+0x88], r8
| 4^ | 0.3 | 0.3 | 1.5 0.5 | 0.5 0.5 | 1.0 | 0.3 | CP | add dword ptr [r14], 0x1000000
Total Num Of Uops: 24
⇨ 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. PORT2_AGU, PORT3_AGU
Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 |
-------------------------------------------------------------------------
| Cycles | 0.3 0.0 | 0.3 | 6.0 5.5 | 6.0 5.5 | 1.0 | 0.3 |
-------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | |
---------------------------------------------------------------------
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | lddqu xmm0, xmmword ptr [r14+0x40]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | lddqu xmm1, xmmword ptr [r14+0x50]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | lddqu xmm2, xmmword ptr [r14+0x60]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | lddqu xmm3, xmmword ptr [r14+0x70]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | lddqu xmm4, xmmword ptr [r14+0x80]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | lddqu xmm5, xmmword ptr [r14+0x90]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | lddqu xmm6, xmmword ptr [r14+0xa0]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | lddqu xmm7, xmmword ptr [r14+0xb0]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | lddqu xmm8, xmmword ptr [r14+0xc0]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | lddqu xmm9, xmmword ptr [r14+0xd0]
| 4^ | 0.3 | 0.3 | 1.0 0.5 | 1.0 0.5 | 1.0 | 0.3 | CP | add dword ptr [r14], 0x1000000
Total Num Of Uops: 14
⇨ 2 μops that can only use ports {'2', '3'}
With blocking instructions for ports {'0', '1', '5'}:
Throughput Analysis Report
--------------------------
Block Throughput: 4.35 Cycles Throughput Bottleneck: Backend. Port0, Port1, Port5
Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 |
-------------------------------------------------------------------------
| Cycles | 4.3 0.0 | 4.3 | 1.0 0.5 | 1.0 0.5 | 1.0 | 4.3 |
-------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | |
---------------------------------------------------------------------
| 1 | 0.3 | 0.3 | | | | 0.3 | CP | movq xmm0, xmm1
| 1 | 0.3 | 0.3 | | | | 0.3 | CP | movq xmm2, xmm1
| 1 | 0.3 | 0.3 | | | | 0.3 | CP | movq xmm3, xmm1
| 1 | 0.3 | 0.3 | | | | 0.3 | CP | movq xmm4, xmm1
| 1 | 0.3 | 0.3 | | | | 0.3 | CP | movq xmm5, xmm1
| 1 | 0.3 | 0.3 | | | | 0.3 | CP | movq xmm6, xmm1
| 1 | 0.3 | 0.3 | | | | 0.3 | CP | movq xmm7, xmm1
| 1 | 0.3 | 0.3 | | | | 0.3 | CP | movq xmm8, xmm1
| 1 | 0.3 | 0.3 | | | | 0.3 | CP | movq xmm9, xmm1
| 1 | 0.3 | 0.3 | | | | 0.3 | CP | movq xmm10, xmm1
| 1 | 0.3 | 0.3 | | | | 0.3 | CP | movq xmm11, xmm1
| 1 | 0.3 | 0.3 | | | | 0.3 | CP | movq xmm12, xmm1
| 4^ | 0.3 | 0.3 | 1.0 0.5 | 1.0 0.5 | 1.0 | 0.3 | CP | add dword ptr [r14], 0x1000000
Total Num Of Uops: 16
⇨ One μop that can only use ports {'0', '1', '5'}
With an indexed addressing mode
With blocking instructions for port '4':
Throughput Analysis Report
--------------------------
Block Throughput: 11.00 Cycles Throughput Bottleneck: Backend. Port4
Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 |
-------------------------------------------------------------------------
| Cycles | 0.3 0.0 | 0.3 | 6.0 0.5 | 6.0 0.5 | 11.0 | 0.3 |
-------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | |
---------------------------------------------------------------------
| 2^ | | | 1.0 | | 1.0 | | CP | mov qword ptr [r14+0x40], r8
| 2^ | | | | 1.0 | 1.0 | | CP | mov qword ptr [r14+0x48], r8
| 2^ | | | 1.0 | | 1.0 | | CP | mov qword ptr [r14+0x50], r8
| 2^ | | | | 1.0 | 1.0 | | CP | mov qword ptr [r14+0x58], r8
| 2^ | | | 1.0 | | 1.0 | | CP | mov qword ptr [r14+0x60], r8
| 2^ | | | | 1.0 | 1.0 | | CP | mov qword ptr [r14+0x68], r8
| 2^ | | | 1.0 | | 1.0 | | CP | mov qword ptr [r14+0x70], r8
| 2^ | | | | 1.0 | 1.0 | | CP | mov qword ptr [r14+0x78], r8
| 2^ | | | 1.0 | | 1.0 | | CP | mov qword ptr [r14+0x80], r8
| 2^ | | | | 1.0 | 1.0 | | CP | mov qword ptr [r14+0x88], r8
| 4 | 0.3 | 0.3 | 1.0 0.5 | 1.0 0.5 | 1.0 | 0.3 | CP | add dword ptr [r14+r13*1], 0x1000000
Total Num Of Uops: 24
⇨ 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. PORT2_AGU, PORT3_AGU
Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 |
-------------------------------------------------------------------------
| Cycles | 0.3 0.0 | 0.3 | 6.0 5.5 | 6.0 5.5 | 1.0 | 0.3 |
-------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | |
---------------------------------------------------------------------
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | lddqu xmm0, xmmword ptr [r14+0x40]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | lddqu xmm1, xmmword ptr [r14+0x50]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | lddqu xmm2, xmmword ptr [r14+0x60]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | lddqu xmm3, xmmword ptr [r14+0x70]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | lddqu xmm4, xmmword ptr [r14+0x80]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | lddqu xmm5, xmmword ptr [r14+0x90]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | lddqu xmm6, xmmword ptr [r14+0xa0]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | lddqu xmm7, xmmword ptr [r14+0xb0]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | lddqu xmm8, xmmword ptr [r14+0xc0]
| 1 | | | 0.5 0.5 | 0.5 0.5 | | | CP | lddqu xmm9, xmmword ptr [r14+0xd0]
| 4 | 0.3 | 0.3 | 1.0 0.5 | 1.0 0.5 | 1.0 | 0.3 | CP | add dword ptr [r14+r13*1], 0x1000000
Total Num Of Uops: 14
⇨ 2 μops that can only use ports {'2', '3'}
With blocking instructions for ports {'0', '1', '5'}:
Throughput Analysis Report
--------------------------
Block Throughput: 4.35 Cycles Throughput Bottleneck: FrontEnd
Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
| Port | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 |
-------------------------------------------------------------------------
| Cycles | 4.3 0.0 | 4.3 | 1.0 0.5 | 1.0 0.5 | 1.0 | 4.3 |
-------------------------------------------------------------------------
| Num Of | Ports pressure in cycles | |
| Uops | 0 - DV | 1 | 2 - D | 3 - D | 4 | 5 | |
---------------------------------------------------------------------
| 1 | 0.3 | 0.3 | | | | 0.3 | CP | movq xmm0, xmm1
| 1 | 0.3 | 0.3 | | | | 0.3 | CP | movq xmm2, xmm1
| 1 | 0.3 | 0.3 | | | | 0.3 | CP | movq xmm3, xmm1
| 1 | 0.3 | 0.3 | | | | 0.3 | CP | movq xmm4, xmm1
| 1 | 0.3 | 0.3 | | | | 0.3 | CP | movq xmm5, xmm1
| 1 | 0.3 | 0.3 | | | | 0.3 | CP | movq xmm6, xmm1
| 1 | 0.3 | 0.3 | | | | 0.3 | CP | movq xmm7, xmm1
| 1 | 0.3 | 0.3 | | | | 0.3 | CP | movq xmm8, xmm1
| 1 | 0.3 | 0.3 | | | | 0.3 | CP | movq xmm9, xmm1
| 1 | 0.3 | 0.3 | | | | 0.3 | CP | movq xmm10, xmm1
| 1 | 0.3 | 0.3 | | | | 0.3 | CP | movq xmm11, xmm1
| 1 | 0.3 | 0.3 | | | | 0.3 | CP | movq xmm12, xmm1
| 4 | 0.3 | 0.3 | 1.0 0.5 | 1.0 0.5 | 1.0 | 0.3 | CP | add dword ptr [r14+r13*1], 0x1000000
Total Num Of Uops: 16
⇨ One μop that can only use ports {'0', '1', '5'}