PCLMULQDQ (XMM, XMM, I8) - Port Usage (IACA 3.0)
With blocking instructions for port '0':
Throughput Analysis Report
--------------------------
Block Throughput: 22.00 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 | 22.0 0.0 | 0.0 | 0.0 0.0 | 0.0 0.0 | 0.0 | 1.0 | 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 | | | | | | | | movd r8d, mmx0
| 1 | 1.0 | | | | | | | | movd r9d, mmx0
| 1 | 1.0 | | | | | | | | movd r10d, mmx0
| 1 | 1.0 | | | | | | | | movd r11d, mmx0
| 1 | 1.0 | | | | | | | | movd r12d, mmx0
| 1 | 1.0 | | | | | | | | movd ebx, mmx0
| 1 | 1.0 | | | | | | | | movd ecx, mmx0
| 1 | 1.0 | | | | | | | | movd edx, mmx0
| 1 | 1.0 | | | | | | | | movd r8d, mmx0
| 1 | 1.0 | | | | | | | | movd r9d, mmx0
| 1 | 1.0 | | | | | | | | movd r10d, mmx0
| 1 | 1.0 | | | | | | | | movd r11d, mmx0
| 1 | 1.0 | | | | | | | | movd r12d, mmx0
| 1 | 1.0 | | | | | | | | movd ebx, mmx0
| 1 | 1.0 | | | | | | | | movd ecx, mmx0
| 1 | 1.0 | | | | | | | | movd edx, mmx0
| 1 | 1.0 | | | | | | | | movd r8d, mmx0
| 1 | 1.0 | | | | | | | | movd r9d, mmx0
| 1 | 1.0 | | | | | | | | movd r10d, mmx0
| 1 | 1.0 | | | | | | | | movd r11d, mmx0
| 3 | 2.0 | | | | | 1.0 | | | pclmulqdq xmm0, xmm1, 0x2
Total Num Of Uops: 23
⇨ 2 μops that can only use port '0'
With blocking instructions for port '5':
Throughput Analysis Report
--------------------------
Block Throughput: 20.95 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 | 2.0 0.0 | 0.0 | 0.0 0.0 | 0.0 0.0 | 0.0 | 21.0 | 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 | | | andnpd xmm2, xmm3
| 1 | | | | | | 1.0 | | | andnpd xmm4, xmm3
| 1 | | | | | | 1.0 | | | andnpd xmm5, xmm3
| 1 | | | | | | 1.0 | | | andnpd xmm6, xmm3
| 1 | | | | | | 1.0 | | | andnpd xmm7, xmm3
| 1 | | | | | | 1.0 | | | andnpd xmm8, xmm3
| 1 | | | | | | 1.0 | | | andnpd xmm9, xmm3
| 1 | | | | | | 1.0 | | | andnpd xmm10, xmm3
| 1 | | | | | | 1.0 | | | andnpd xmm11, xmm3
| 1 | | | | | | 1.0 | | | andnpd xmm12, xmm3
| 1 | | | | | | 1.0 | | | andnpd xmm2, xmm3
| 1 | | | | | | 1.0 | | | andnpd xmm4, xmm3
| 1 | | | | | | 1.0 | | | andnpd xmm5, xmm3
| 1 | | | | | | 1.0 | | | andnpd xmm6, xmm3
| 1 | | | | | | 1.0 | | | andnpd xmm7, xmm3
| 1 | | | | | | 1.0 | | | andnpd xmm8, xmm3
| 1 | | | | | | 1.0 | | | andnpd xmm9, xmm3
| 1 | | | | | | 1.0 | | | andnpd xmm10, xmm3
| 1 | | | | | | 1.0 | | | andnpd xmm11, xmm3
| 1 | | | | | | 1.0 | | | andnpd xmm12, xmm3
| 3 | 2.0 | | | | | 1.0 | | | pclmulqdq xmm0, xmm1, 0x2
Total Num Of Uops: 23
⇨ One μop that can only use port '5'