| Issue |
104848
|
| Summary |
Superfluous instructions when using `_mm_set_ss` with `-ffp-model=strict`
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
jerryct
|
When using the intrinics `_mm_set_ss` with `-ffp-model=strict` compiler flag
Clang generates two seemingly unrelated instructions (neither `eax` nor `xmm1` are used by `andps`)
```
xor eax, eax
cvtsi2ss xmm1, eax
andps xmm0, xmmword ptr [rip + .LCPI1_0]
```
reproducer: https://godbolt.org/z/3fj6ob345
For example when switching to `_mm_load_ps1` instead the instructions
are not generated: https://godbolt.org/z/8G6vGEjxE
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