VCVTPD2PS (XMM, YMM) - Throughput and Uops (IACA 2.1)


With different registers for different operands

With 1 independent instruction

Throughput Analysis Report
--------------------------
Block Throughput: 1.00 Cycles       Throughput Bottleneck: Port1, Port5

Port Binding In Cycles Per Iteration:
---------------------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |  6   |  7   |
---------------------------------------------------------------------------------------
| Cycles | 0.0    0.0  | 1.0  | 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  |    |
---------------------------------------------------------------------------------
|   2    |           | 1.0 |           |           |     | 1.0 |     |     | CP | vcvtpd2ps xmm0, ymm1
Total Num Of Uops: 2

With 12 independent instructions


Throughput Analysis Report
--------------------------
Block Throughput: 12.00 Cycles       Throughput Bottleneck: Port1, Port5

Port Binding In Cycles Per Iteration:
---------------------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |  6   |  7   |
---------------------------------------------------------------------------------------
| Cycles | 0.0    0.0  | 12.0 | 0.0    0.0  | 0.0    0.0  | 0.0  | 12.0 | 0.0  | 0.0  |
---------------------------------------------------------------------------------------


| Num Of |                    Ports pressure in cycles                     |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |  6  |  7  |    |
---------------------------------------------------------------------------------
|   2    |           | 1.0 |           |           |     | 1.0 |     |     | CP | vcvtpd2ps xmm0, ymm1
|   2    |           | 1.0 |           |           |     | 1.0 |     |     | CP | vcvtpd2ps xmm2, ymm1
|   2    |           | 1.0 |           |           |     | 1.0 |     |     | CP | vcvtpd2ps xmm3, ymm1
|   2    |           | 1.0 |           |           |     | 1.0 |     |     | CP | vcvtpd2ps xmm4, ymm1
|   2    |           | 1.0 |           |           |     | 1.0 |     |     | CP | vcvtpd2ps xmm5, ymm1
|   2    |           | 1.0 |           |           |     | 1.0 |     |     | CP | vcvtpd2ps xmm6, ymm1
|   2    |           | 1.0 |           |           |     | 1.0 |     |     | CP | vcvtpd2ps xmm7, ymm1
|   2    |           | 1.0 |           |           |     | 1.0 |     |     | CP | vcvtpd2ps xmm8, ymm1
|   2    |           | 1.0 |           |           |     | 1.0 |     |     | CP | vcvtpd2ps xmm9, ymm1
|   2    |           | 1.0 |           |           |     | 1.0 |     |     | CP | vcvtpd2ps xmm10, ymm1
|   2    |           | 1.0 |           |           |     | 1.0 |     |     | CP | vcvtpd2ps xmm11, ymm1
|   2    |           | 1.0 |           |           |     | 1.0 |     |     | CP | vcvtpd2ps xmm12, ymm1
Total Num Of Uops: 24

With the same register for for different operands

With 1 independent instruction

Throughput Analysis Report
--------------------------
Block Throughput: 4.00 Cycles       Throughput Bottleneck: InterIteration

Port Binding In Cycles Per Iteration:
---------------------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |  6   |  7   |
---------------------------------------------------------------------------------------
| Cycles | 0.0    0.0  | 1.0  | 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  |    |
---------------------------------------------------------------------------------
|   2    |           | 1.0 |           |           |     | 1.0 |     |     | CP | vcvtpd2ps xmm0, ymm0
Total Num Of Uops: 2

With 13 independent instructions


Throughput Analysis Report
--------------------------
Block Throughput: 13.00 Cycles       Throughput Bottleneck: Port1, Port5

Port Binding In Cycles Per Iteration:
---------------------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |  6   |  7   |
---------------------------------------------------------------------------------------
| Cycles | 0.0    0.0  | 13.0 | 0.0    0.0  | 0.0    0.0  | 0.0  | 13.0 | 0.0  | 0.0  |
---------------------------------------------------------------------------------------


| Num Of |                    Ports pressure in cycles                     |    |
|  Uops  |  0  - DV  |  1  |  2  -  D  |  3  -  D  |  4  |  5  |  6  |  7  |    |
---------------------------------------------------------------------------------
|   2    |           | 1.0 |           |           |     | 1.0 |     |     | CP | vcvtpd2ps xmm0, ymm0
|   2    |           | 1.0 |           |           |     | 1.0 |     |     | CP | vcvtpd2ps xmm1, ymm1
|   2    |           | 1.0 |           |           |     | 1.0 |     |     | CP | vcvtpd2ps xmm2, ymm2
|   2    |           | 1.0 |           |           |     | 1.0 |     |     | CP | vcvtpd2ps xmm3, ymm3
|   2    |           | 1.0 |           |           |     | 1.0 |     |     | CP | vcvtpd2ps xmm4, ymm4
|   2    |           | 1.0 |           |           |     | 1.0 |     |     | CP | vcvtpd2ps xmm5, ymm5
|   2    |           | 1.0 |           |           |     | 1.0 |     |     | CP | vcvtpd2ps xmm6, ymm6
|   2    |           | 1.0 |           |           |     | 1.0 |     |     | CP | vcvtpd2ps xmm7, ymm7
|   2    |           | 1.0 |           |           |     | 1.0 |     |     | CP | vcvtpd2ps xmm8, ymm8
|   2    |           | 1.0 |           |           |     | 1.0 |     |     | CP | vcvtpd2ps xmm9, ymm9
|   2    |           | 1.0 |           |           |     | 1.0 |     |     | CP | vcvtpd2ps xmm10, ymm10
|   2    |           | 1.0 |           |           |     | 1.0 |     |     | CP | vcvtpd2ps xmm11, ymm11
|   2    |           | 1.0 |           |           |     | 1.0 |     |     | CP | vcvtpd2ps xmm12, ymm12
Total Num Of Uops: 26

With the -no_interiteration flag

Throughput Analysis Report
--------------------------
Block Throughput: 1.00 Cycles       Throughput Bottleneck: Port1, Port5

Port Binding In Cycles Per Iteration:
---------------------------------------------------------------------------------------
|  Port  |  0   -  DV  |  1   |  2   -  D   |  3   -  D   |  4   |  5   |  6   |  7   |
---------------------------------------------------------------------------------------
| Cycles | 0.0    0.0  | 1.0  | 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  |    |
---------------------------------------------------------------------------------
|   2    |           | 1.0 |           |           |     | 1.0 |     |     | CP | vcvtpd2ps xmm0, ymm1
Total Num Of Uops: 2