IMUL (M32) - Port Usage (IACA 2.1)


With blocking instructions for port '0':

Throughput Analysis Report
--------------------------
Block Throughput: 17.00 Cycles       Throughput Bottleneck: Port0

Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |
-------------------------------------------------------------------------
| Cycles | 17.0   0.0  | 1.0  | 1.0    1.0  | 0.0    0.0  | 0.0  | 0.0  |
-------------------------------------------------------------------------


| Num Of |              Ports pressure in cycles               |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |    |
---------------------------------------------------------------------
|   1    | 1.0       |     |           |           |     |     | CP | movmskpd r8d, xmm0
|   1    | 1.0       |     |           |           |     |     | CP | movmskpd r9d, xmm0
|   1    | 1.0       |     |           |           |     |     | CP | movmskpd r10d, xmm0
|   1    | 1.0       |     |           |           |     |     | CP | movmskpd r11d, xmm0
|   1    | 1.0       |     |           |           |     |     | CP | movmskpd r12d, xmm0
|   1    | 1.0       |     |           |           |     |     | CP | movmskpd ebx, xmm0
|   1    | 1.0       |     |           |           |     |     | CP | movmskpd ecx, xmm0
|   1    | 1.0       |     |           |           |     |     | CP | movmskpd r8d, xmm0
|   1    | 1.0       |     |           |           |     |     | CP | movmskpd r9d, xmm0
|   1    | 1.0       |     |           |           |     |     | CP | movmskpd r10d, xmm0
|   1    | 1.0       |     |           |           |     |     | CP | movmskpd r11d, xmm0
|   1    | 1.0       |     |           |           |     |     | CP | movmskpd r12d, xmm0
|   1    | 1.0       |     |           |           |     |     | CP | movmskpd ebx, xmm0
|   1    | 1.0       |     |           |           |     |     | CP | movmskpd ecx, xmm0
|   1    | 1.0       |     |           |           |     |     | CP | movmskpd r8d, xmm0
|   1    | 1.0       |     |           |           |     |     | CP | movmskpd r9d, xmm0
|   3    | 1.0       | 1.0 | 1.0   1.0 |           |     |     | CP | imul dword ptr [r14]
Total Num Of Uops: 19
⇨ One μop that can only use port '0'

With blocking instructions for port '1':

Throughput Analysis Report
--------------------------
Block Throughput: 17.00 Cycles       Throughput Bottleneck: Port1

Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |
-------------------------------------------------------------------------
| Cycles | 1.0    0.0  | 17.0 | 1.0    1.0  | 0.0    0.0  | 0.0  | 0.0  |
-------------------------------------------------------------------------


| Num Of |              Ports pressure in cycles               |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |    |
---------------------------------------------------------------------
|   1    |           | 1.0 |           |           |     |     | CP | addpd xmm0, xmm1
|   1    |           | 1.0 |           |           |     |     | CP | addpd xmm2, xmm1
|   1    |           | 1.0 |           |           |     |     | CP | addpd xmm3, xmm1
|   1    |           | 1.0 |           |           |     |     | CP | addpd xmm4, xmm1
|   1    |           | 1.0 |           |           |     |     | CP | addpd xmm5, xmm1
|   1    |           | 1.0 |           |           |     |     | CP | addpd xmm6, xmm1
|   1    |           | 1.0 |           |           |     |     | CP | addpd xmm7, xmm1
|   1    |           | 1.0 |           |           |     |     | CP | addpd xmm8, xmm1
|   1    |           | 1.0 |           |           |     |     | CP | addpd xmm9, xmm1
|   1    |           | 1.0 |           |           |     |     | CP | addpd xmm10, xmm1
|   1    |           | 1.0 |           |           |     |     | CP | addpd xmm11, xmm1
|   1    |           | 1.0 |           |           |     |     | CP | addpd xmm12, xmm1
|   1    |           | 1.0 |           |           |     |     | CP | addpd xmm0, xmm1
|   1    |           | 1.0 |           |           |     |     | CP | addpd xmm2, xmm1
|   1    |           | 1.0 |           |           |     |     | CP | addpd xmm3, xmm1
|   1    |           | 1.0 |           |           |     |     | CP | addpd xmm4, xmm1
|   3    | 1.0       | 1.0 | 1.0   1.0 |           |     |     | CP | imul dword ptr [r14]
Total Num Of Uops: 19
⇨ One μop that can only use port '1'

With blocking instructions for port '2':

Throughput Analysis Report
--------------------------
Block Throughput: 17.00 Cycles       Throughput Bottleneck: PORT2_AGU, Port2_DATA

Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |
-------------------------------------------------------------------------
| Cycles | 1.0    0.0  | 1.0  | 17.0   17.0 | 0.0    0.0  | 0.0  | 0.0  |
-------------------------------------------------------------------------


| Num Of |              Ports pressure in cycles               |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |    |
---------------------------------------------------------------------
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm0, dword ptr [r14+0x40]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm1, dword ptr [r14+0x44]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm2, dword ptr [r14+0x48]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm3, dword ptr [r14+0x4c]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm4, dword ptr [r14+0x50]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm5, dword ptr [r14+0x54]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm6, dword ptr [r14+0x58]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm7, dword ptr [r14+0x5c]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm8, dword ptr [r14+0x60]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm9, dword ptr [r14+0x64]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm10, dword ptr [r14+0x68]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm11, dword ptr [r14+0x6c]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm12, dword ptr [r14+0x70]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm0, dword ptr [r14+0x40]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm1, dword ptr [r14+0x44]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm2, dword ptr [r14+0x48]
|   3    | 1.0       | 1.0 | 1.0   1.0 |           |     |     | CP | imul dword ptr [r14]
Total Num Of Uops: 19
⇨ One μop that can only use port '2'

With an indexed addressing mode


With blocking instructions for port '0':

Throughput Analysis Report
--------------------------
Block Throughput: 17.00 Cycles       Throughput Bottleneck: Port0

Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |
-------------------------------------------------------------------------
| Cycles | 17.0   0.0  | 1.0  | 1.0    1.0  | 0.0    0.0  | 0.0  | 0.0  |
-------------------------------------------------------------------------


| Num Of |              Ports pressure in cycles               |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |    |
---------------------------------------------------------------------
|   1    | 1.0       |     |           |           |     |     | CP | movmskpd r8d, xmm0
|   1    | 1.0       |     |           |           |     |     | CP | movmskpd r9d, xmm0
|   1    | 1.0       |     |           |           |     |     | CP | movmskpd r10d, xmm0
|   1    | 1.0       |     |           |           |     |     | CP | movmskpd r11d, xmm0
|   1    | 1.0       |     |           |           |     |     | CP | movmskpd r12d, xmm0
|   1    | 1.0       |     |           |           |     |     | CP | movmskpd ebx, xmm0
|   1    | 1.0       |     |           |           |     |     | CP | movmskpd ecx, xmm0
|   1    | 1.0       |     |           |           |     |     | CP | movmskpd r8d, xmm0
|   1    | 1.0       |     |           |           |     |     | CP | movmskpd r9d, xmm0
|   1    | 1.0       |     |           |           |     |     | CP | movmskpd r10d, xmm0
|   1    | 1.0       |     |           |           |     |     | CP | movmskpd r11d, xmm0
|   1    | 1.0       |     |           |           |     |     | CP | movmskpd r12d, xmm0
|   1    | 1.0       |     |           |           |     |     | CP | movmskpd ebx, xmm0
|   1    | 1.0       |     |           |           |     |     | CP | movmskpd ecx, xmm0
|   1    | 1.0       |     |           |           |     |     | CP | movmskpd r8d, xmm0
|   1    | 1.0       |     |           |           |     |     | CP | movmskpd r9d, xmm0
|   3    | 1.0       | 1.0 | 1.0   1.0 |           |     |     | CP | imul dword ptr [r14+r13*1]
Total Num Of Uops: 19
⇨ One μop that can only use port '0'

With blocking instructions for port '1':

Throughput Analysis Report
--------------------------
Block Throughput: 17.00 Cycles       Throughput Bottleneck: Port1

Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |
-------------------------------------------------------------------------
| Cycles | 1.0    0.0  | 17.0 | 1.0    1.0  | 0.0    0.0  | 0.0  | 0.0  |
-------------------------------------------------------------------------


| Num Of |              Ports pressure in cycles               |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |    |
---------------------------------------------------------------------
|   1    |           | 1.0 |           |           |     |     | CP | addpd xmm0, xmm1
|   1    |           | 1.0 |           |           |     |     | CP | addpd xmm2, xmm1
|   1    |           | 1.0 |           |           |     |     | CP | addpd xmm3, xmm1
|   1    |           | 1.0 |           |           |     |     | CP | addpd xmm4, xmm1
|   1    |           | 1.0 |           |           |     |     | CP | addpd xmm5, xmm1
|   1    |           | 1.0 |           |           |     |     | CP | addpd xmm6, xmm1
|   1    |           | 1.0 |           |           |     |     | CP | addpd xmm7, xmm1
|   1    |           | 1.0 |           |           |     |     | CP | addpd xmm8, xmm1
|   1    |           | 1.0 |           |           |     |     | CP | addpd xmm9, xmm1
|   1    |           | 1.0 |           |           |     |     | CP | addpd xmm10, xmm1
|   1    |           | 1.0 |           |           |     |     | CP | addpd xmm11, xmm1
|   1    |           | 1.0 |           |           |     |     | CP | addpd xmm12, xmm1
|   1    |           | 1.0 |           |           |     |     | CP | addpd xmm0, xmm1
|   1    |           | 1.0 |           |           |     |     | CP | addpd xmm2, xmm1
|   1    |           | 1.0 |           |           |     |     | CP | addpd xmm3, xmm1
|   1    |           | 1.0 |           |           |     |     | CP | addpd xmm4, xmm1
|   3    | 1.0       | 1.0 | 1.0   1.0 |           |     |     | CP | imul dword ptr [r14+r13*1]
Total Num Of Uops: 19
⇨ One μop that can only use port '1'

With blocking instructions for port '2':

Throughput Analysis Report
--------------------------
Block Throughput: 17.00 Cycles       Throughput Bottleneck: PORT2_AGU, Port2_DATA

Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |
-------------------------------------------------------------------------
| Cycles | 1.0    0.0  | 1.0  | 17.0   17.0 | 0.0    0.0  | 0.0  | 0.0  |
-------------------------------------------------------------------------


| Num Of |              Ports pressure in cycles               |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |    |
---------------------------------------------------------------------
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm0, dword ptr [r14+0x40]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm1, dword ptr [r14+0x44]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm2, dword ptr [r14+0x48]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm3, dword ptr [r14+0x4c]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm4, dword ptr [r14+0x50]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm5, dword ptr [r14+0x54]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm6, dword ptr [r14+0x58]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm7, dword ptr [r14+0x5c]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm8, dword ptr [r14+0x60]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm9, dword ptr [r14+0x64]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm10, dword ptr [r14+0x68]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm11, dword ptr [r14+0x6c]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm12, dword ptr [r14+0x70]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm0, dword ptr [r14+0x40]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm1, dword ptr [r14+0x44]
|  1*^   |           |     | 1.0   1.0 |           |     |     | CP | cvtss2sd xmm2, dword ptr [r14+0x48]
|   3    | 1.0       | 1.0 | 1.0   1.0 |           |     |     | CP | imul dword ptr [r14+r13*1]
Total Num Of Uops: 19
⇨ One μop that can only use port '2'