MOVQ (M64, XMM) - Throughput and Uops (IACA 3.0)


With a non-indexed addressing mode

With 1 independent instruction

Throughput Analysis Report
--------------------------
Block Throughput: 0.91 Cycles       Throughput Bottleneck: Backend
Loop Count:  56
Port Binding In Cycles Per Iteration:
--------------------------------------------------------------------------------------------------
|  Port  |   0   -  DV   |   1   |   2   -  D    |   3   -  D    |   4   |   5   |   6   |   7   |
--------------------------------------------------------------------------------------------------
| Cycles |  0.0     0.0  |  0.0  |  0.3     0.0  |  0.3     0.0  |  1.0  |  0.0  |  0.0  |  0.3  |
--------------------------------------------------------------------------------------------------

| Num Of   |                    Ports pressure in cycles                         |      |
|  Uops    |  0  - DV    |  1   |  2  -  D    |  3  -  D    |  4   |  5   |  6   |  7   |
-----------------------------------------------------------------------------------------
|   2^     |             |      | 0.3         | 0.3         | 1.0  |      |      | 0.3  | movq qword ptr [r14], xmm0
Total Num Of Uops: 2

With 16 independent instructions


Throughput Analysis Report
--------------------------
Block Throughput: 16.00 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 |  0.0     0.0  |  0.0  |  5.3     0.0  |  5.4     0.0  | 16.0  |  0.0  |  0.0  |  5.3  |
--------------------------------------------------------------------------------------------------

| Num Of   |                    Ports pressure in cycles                         |      |
|  Uops    |  0  - DV    |  1   |  2  -  D    |  3  -  D    |  4   |  5   |  6   |  7   |
-----------------------------------------------------------------------------------------
|   2^     |             |      | 0.3         | 0.4         | 1.0  |      |      | 0.3  | movq qword ptr [r14], xmm0
|   2^     |             |      | 0.3         | 0.3         | 1.0  |      |      | 0.4  | movq qword ptr [r14+0x8], xmm0
|   2^     |             |      | 0.4         | 0.3         | 1.0  |      |      | 0.3  | movq qword ptr [r14+0x10], xmm0
|   2^     |             |      | 0.3         | 0.4         | 1.0  |      |      | 0.3  | movq qword ptr [r14+0x18], xmm0
|   2^     |             |      | 0.3         | 0.3         | 1.0  |      |      | 0.4  | movq qword ptr [r14+0x20], xmm0
|   2^     |             |      | 0.4         | 0.3         | 1.0  |      |      | 0.3  | movq qword ptr [r14+0x28], xmm0
|   2^     |             |      | 0.3         | 0.4         | 1.0  |      |      | 0.3  | movq qword ptr [r14+0x30], xmm0
|   2^     |             |      | 0.3         | 0.3         | 1.0  |      |      | 0.4  | movq qword ptr [r14+0x38], xmm0
|   2^     |             |      | 0.4         | 0.3         | 1.0  |      |      | 0.3  | movq qword ptr [r14+0x40], xmm0
|   2^     |             |      | 0.3         | 0.4         | 1.0  |      |      | 0.3  | movq qword ptr [r14+0x48], xmm0
|   2^     |             |      | 0.3         | 0.3         | 1.0  |      |      | 0.4  | movq qword ptr [r14+0x50], xmm0
|   2^     |             |      | 0.4         | 0.3         | 1.0  |      |      | 0.3  | movq qword ptr [r14+0x58], xmm0
|   2^     |             |      | 0.3         | 0.4         | 1.0  |      |      | 0.3  | movq qword ptr [r14+0x60], xmm0
|   2^     |             |      | 0.3         | 0.3         | 1.0  |      |      | 0.4  | movq qword ptr [r14+0x68], xmm0
|   2^     |             |      | 0.4         | 0.3         | 1.0  |      |      | 0.3  | movq qword ptr [r14+0x70], xmm0
|   2^     |             |      | 0.3         | 0.4         | 1.0  |      |      | 0.3  | movq qword ptr [r14+0x78], xmm0
Total Num Of Uops: 32

With an indexed addressing mode

With 1 independent instruction

Throughput Analysis Report
--------------------------
Block Throughput: 0.84 Cycles       Throughput Bottleneck: Dependency chains
Loop Count:  34
Port Binding In Cycles Per Iteration:
--------------------------------------------------------------------------------------------------
|  Port  |   0   -  DV   |   1   |   2   -  D    |   3   -  D    |   4   |   5   |   6   |   7   |
--------------------------------------------------------------------------------------------------
| Cycles |  0.0     0.0  |  0.0  |  0.5     0.0  |  0.5     0.0  |  1.0  |  0.0  |  0.0  |  0.0  |
--------------------------------------------------------------------------------------------------

| Num Of   |                    Ports pressure in cycles                         |      |
|  Uops    |  0  - DV    |  1   |  2  -  D    |  3  -  D    |  4   |  5   |  6   |  7   |
-----------------------------------------------------------------------------------------
|   2      |             |      | 0.5         | 0.5         | 1.0  |      |      |      | movq qword ptr [r14+r13*1], xmm0
Total Num Of Uops: 2

With 16 independent instructions


Throughput Analysis Report
--------------------------
Block Throughput: 16.00 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 |  0.0     0.0  |  0.0  |  8.0     0.0  |  8.0     0.0  | 16.0  |  0.0  |  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  |      |      |      | movq qword ptr [r14+r13*1], xmm0
|   2      |             |      |             | 1.0         | 1.0  |      |      |      | movq qword ptr [r14+r13*1+0x8], xmm0
|   2      |             |      | 1.0         |             | 1.0  |      |      |      | movq qword ptr [r14+r13*1+0x10], xmm0
|   2      |             |      |             | 1.0         | 1.0  |      |      |      | movq qword ptr [r14+r13*1+0x18], xmm0
|   2      |             |      | 1.0         |             | 1.0  |      |      |      | movq qword ptr [r14+r13*1+0x20], xmm0
|   2      |             |      |             | 1.0         | 1.0  |      |      |      | movq qword ptr [r14+r13*1+0x28], xmm0
|   2      |             |      | 1.0         |             | 1.0  |      |      |      | movq qword ptr [r14+r13*1+0x30], xmm0
|   2      |             |      |             | 1.0         | 1.0  |      |      |      | movq qword ptr [r14+r13*1+0x38], xmm0
|   2      |             |      | 1.0         |             | 1.0  |      |      |      | movq qword ptr [r14+r13*1+0x40], xmm0
|   2      |             |      |             | 1.0         | 1.0  |      |      |      | movq qword ptr [r14+r13*1+0x48], xmm0
|   2      |             |      | 1.0         |             | 1.0  |      |      |      | movq qword ptr [r14+r13*1+0x50], xmm0
|   2      |             |      |             | 1.0         | 1.0  |      |      |      | movq qword ptr [r14+r13*1+0x58], xmm0
|   2      |             |      | 1.0         |             | 1.0  |      |      |      | movq qword ptr [r14+r13*1+0x60], xmm0
|   2      |             |      |             | 1.0         | 1.0  |      |      |      | movq qword ptr [r14+r13*1+0x68], xmm0
|   2      |             |      | 1.0         |             | 1.0  |      |      |      | movq qword ptr [r14+r13*1+0x70], xmm0
|   2      |             |      |             | 1.0         | 1.0  |      |      |      | movq qword ptr [r14+r13*1+0x78], xmm0
Total Num Of Uops: 32