VUCOMISS (XMM, M32) - Port Usage (IACA 2.3)


With blocking instructions for port '0':

Throughput Analysis Report
--------------------------
Block Throughput: 11.00 Cycles       Throughput Bottleneck: Backend. Port0

Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |
-------------------------------------------------------------------------
| Cycles | 11.0   0.0  | 1.0  | 0.5    0.5  | 0.5    0.5  | 0.0  | 0.0  |
-------------------------------------------------------------------------


| Num Of |              Ports pressure in cycles               |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |    |
---------------------------------------------------------------------
|   1    | 1.0       |     |           |           |     |     | CP | vcvtss2sd xmm1, xmm2, xmm3
|   1    | 1.0       |     |           |           |     |     | CP | vcvtss2sd xmm4, xmm2, xmm3
|   1    | 1.0       |     |           |           |     |     | CP | vcvtss2sd xmm5, xmm2, xmm3
|   1    | 1.0       |     |           |           |     |     | CP | vcvtss2sd xmm6, xmm2, xmm3
|   1    | 1.0       |     |           |           |     |     | CP | vcvtss2sd xmm7, xmm2, xmm3
|   1    | 1.0       |     |           |           |     |     | CP | vcvtss2sd xmm8, xmm2, xmm3
|   1    | 1.0       |     |           |           |     |     | CP | vcvtss2sd xmm9, xmm2, xmm3
|   1    | 1.0       |     |           |           |     |     | CP | vcvtss2sd xmm10, xmm2, xmm3
|   1    | 1.0       |     |           |           |     |     | CP | vcvtss2sd xmm11, xmm2, xmm3
|   1    | 1.0       |     |           |           |     |     | CP | vcvtss2sd xmm12, xmm2, xmm3
|   3^   | 1.0       | 1.0 | 0.5   0.5 | 0.5   0.5 |     |     | CP | vucomiss xmm0, dword ptr [r14]
Total Num Of Uops: 13
⇨ One μop that can only use port '0'

With blocking instructions for port '1':

Throughput Analysis Report
--------------------------
Block Throughput: 11.00 Cycles       Throughput Bottleneck: Backend. Port1

Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |
-------------------------------------------------------------------------
| Cycles | 1.0    0.0  | 11.0 | 0.5    0.5  | 0.5    0.5  | 0.0  | 0.0  |
-------------------------------------------------------------------------


| Num Of |              Ports pressure in cycles               |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |    |
---------------------------------------------------------------------
|   1    |           | 1.0 |           |           |     |     | CP | vaddpd xmm1, xmm2, xmm3
|   1    |           | 1.0 |           |           |     |     | CP | vaddpd xmm4, xmm2, xmm3
|   1    |           | 1.0 |           |           |     |     | CP | vaddpd xmm5, xmm2, xmm3
|   1    |           | 1.0 |           |           |     |     | CP | vaddpd xmm6, xmm2, xmm3
|   1    |           | 1.0 |           |           |     |     | CP | vaddpd xmm7, xmm2, xmm3
|   1    |           | 1.0 |           |           |     |     | CP | vaddpd xmm8, xmm2, xmm3
|   1    |           | 1.0 |           |           |     |     | CP | vaddpd xmm9, xmm2, xmm3
|   1    |           | 1.0 |           |           |     |     | CP | vaddpd xmm10, xmm2, xmm3
|   1    |           | 1.0 |           |           |     |     | CP | vaddpd xmm11, xmm2, xmm3
|   1    |           | 1.0 |           |           |     |     | CP | vaddpd xmm12, xmm2, xmm3
|   3^   | 1.0       | 1.0 | 0.5   0.5 | 0.5   0.5 |     |     | CP | vucomiss xmm0, dword ptr [r14]
Total Num Of Uops: 13
⇨ One μop that can only use port '1'

With blocking instructions for ports {'2', '3'}:

Throughput Analysis Report
--------------------------
Block Throughput: 5.50 Cycles       Throughput Bottleneck: Backend. PORT2_AGU, Port2_DATA, PORT3_AGU, Port3_DATA

Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |
-------------------------------------------------------------------------
| Cycles | 1.0    0.0  | 1.0  | 5.5    5.5  | 5.5    5.5  | 0.0  | 0.0  |
-------------------------------------------------------------------------


| 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 | mov r8w, word ptr [r14+0x40]
|   1    |           |     | 0.5   0.5 | 0.5   0.5 |     |     | CP | mov r9w, word ptr [r14+0x42]
|   1    |           |     | 0.5   0.5 | 0.5   0.5 |     |     | CP | mov r10w, word ptr [r14+0x44]
|   1    |           |     | 0.5   0.5 | 0.5   0.5 |     |     | CP | mov r11w, word ptr [r14+0x46]
|   1    |           |     | 0.5   0.5 | 0.5   0.5 |     |     | CP | mov r12w, word ptr [r14+0x48]
|   1    |           |     | 0.5   0.5 | 0.5   0.5 |     |     | CP | mov bx, word ptr [r14+0x4a]
|   1    |           |     | 0.5   0.5 | 0.5   0.5 |     |     | CP | mov cx, word ptr [r14+0x4c]
|   1    |           |     | 0.5   0.5 | 0.5   0.5 |     |     | CP | mov dx, word ptr [r14+0x4e]
|   1    |           |     | 0.5   0.5 | 0.5   0.5 |     |     | CP | mov r8w, word ptr [r14+0x40]
|   1    |           |     | 0.5   0.5 | 0.5   0.5 |     |     | CP | mov r9w, word ptr [r14+0x42]
|   3^   | 1.0       | 1.0 | 0.5   0.5 | 0.5   0.5 |     |     | CP | vucomiss xmm0, dword ptr [r14]
Total Num Of Uops: 13
⇨ One μop that can only use ports {'2', '3'}

With an indexed addressing mode


With blocking instructions for port '0':

Throughput Analysis Report
--------------------------
Block Throughput: 11.00 Cycles       Throughput Bottleneck: Backend. Port0

Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |
-------------------------------------------------------------------------
| Cycles | 11.0   0.0  | 1.0  | 0.5    0.5  | 0.5    0.5  | 0.0  | 0.0  |
-------------------------------------------------------------------------


| Num Of |              Ports pressure in cycles               |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |    |
---------------------------------------------------------------------
|   1    | 1.0       |     |           |           |     |     | CP | vcvtss2sd xmm1, xmm2, xmm3
|   1    | 1.0       |     |           |           |     |     | CP | vcvtss2sd xmm4, xmm2, xmm3
|   1    | 1.0       |     |           |           |     |     | CP | vcvtss2sd xmm5, xmm2, xmm3
|   1    | 1.0       |     |           |           |     |     | CP | vcvtss2sd xmm6, xmm2, xmm3
|   1    | 1.0       |     |           |           |     |     | CP | vcvtss2sd xmm7, xmm2, xmm3
|   1    | 1.0       |     |           |           |     |     | CP | vcvtss2sd xmm8, xmm2, xmm3
|   1    | 1.0       |     |           |           |     |     | CP | vcvtss2sd xmm9, xmm2, xmm3
|   1    | 1.0       |     |           |           |     |     | CP | vcvtss2sd xmm10, xmm2, xmm3
|   1    | 1.0       |     |           |           |     |     | CP | vcvtss2sd xmm11, xmm2, xmm3
|   1    | 1.0       |     |           |           |     |     | CP | vcvtss2sd xmm12, xmm2, xmm3
|   3    | 1.0       | 1.0 | 0.5   0.5 | 0.5   0.5 |     |     | CP | vucomiss xmm0, dword ptr [r14+r13*1]
Total Num Of Uops: 13
⇨ One μop that can only use port '0'

With blocking instructions for port '1':

Throughput Analysis Report
--------------------------
Block Throughput: 11.00 Cycles       Throughput Bottleneck: Backend. Port1

Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |
-------------------------------------------------------------------------
| Cycles | 1.0    0.0  | 11.0 | 0.5    0.5  | 0.5    0.5  | 0.0  | 0.0  |
-------------------------------------------------------------------------


| Num Of |              Ports pressure in cycles               |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |    |
---------------------------------------------------------------------
|   1    |           | 1.0 |           |           |     |     | CP | vaddpd xmm1, xmm2, xmm3
|   1    |           | 1.0 |           |           |     |     | CP | vaddpd xmm4, xmm2, xmm3
|   1    |           | 1.0 |           |           |     |     | CP | vaddpd xmm5, xmm2, xmm3
|   1    |           | 1.0 |           |           |     |     | CP | vaddpd xmm6, xmm2, xmm3
|   1    |           | 1.0 |           |           |     |     | CP | vaddpd xmm7, xmm2, xmm3
|   1    |           | 1.0 |           |           |     |     | CP | vaddpd xmm8, xmm2, xmm3
|   1    |           | 1.0 |           |           |     |     | CP | vaddpd xmm9, xmm2, xmm3
|   1    |           | 1.0 |           |           |     |     | CP | vaddpd xmm10, xmm2, xmm3
|   1    |           | 1.0 |           |           |     |     | CP | vaddpd xmm11, xmm2, xmm3
|   1    |           | 1.0 |           |           |     |     | CP | vaddpd xmm12, xmm2, xmm3
|   3    | 1.0       | 1.0 | 0.5   0.5 | 0.5   0.5 |     |     | CP | vucomiss xmm0, dword ptr [r14+r13*1]
Total Num Of Uops: 13
⇨ One μop that can only use port '1'

With blocking instructions for ports {'2', '3'}:

Throughput Analysis Report
--------------------------
Block Throughput: 5.50 Cycles       Throughput Bottleneck: Backend. PORT2_AGU, Port2_DATA, PORT3_AGU, Port3_DATA

Port Binding In Cycles Per Iteration:
-------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |
-------------------------------------------------------------------------
| Cycles | 1.0    0.0  | 1.0  | 5.5    5.5  | 5.5    5.5  | 0.0  | 0.0  |
-------------------------------------------------------------------------


| 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 | mov r8w, word ptr [r14+0x40]
|   1    |           |     | 0.5   0.5 | 0.5   0.5 |     |     | CP | mov r9w, word ptr [r14+0x42]
|   1    |           |     | 0.5   0.5 | 0.5   0.5 |     |     | CP | mov r10w, word ptr [r14+0x44]
|   1    |           |     | 0.5   0.5 | 0.5   0.5 |     |     | CP | mov r11w, word ptr [r14+0x46]
|   1    |           |     | 0.5   0.5 | 0.5   0.5 |     |     | CP | mov r12w, word ptr [r14+0x48]
|   1    |           |     | 0.5   0.5 | 0.5   0.5 |     |     | CP | mov bx, word ptr [r14+0x4a]
|   1    |           |     | 0.5   0.5 | 0.5   0.5 |     |     | CP | mov cx, word ptr [r14+0x4c]
|   1    |           |     | 0.5   0.5 | 0.5   0.5 |     |     | CP | mov dx, word ptr [r14+0x4e]
|   1    |           |     | 0.5   0.5 | 0.5   0.5 |     |     | CP | mov r8w, word ptr [r14+0x40]
|   1    |           |     | 0.5   0.5 | 0.5   0.5 |     |     | CP | mov r9w, word ptr [r14+0x42]
|   3    | 1.0       | 1.0 | 0.5   0.5 | 0.5   0.5 |     |     | CP | vucomiss xmm0, dword ptr [r14+r13*1]
Total Num Of Uops: 13
⇨ One μop that can only use ports {'2', '3'}