[Bug tree-optimization/119310] Unnecessary instructions on std::bit_cast of an array of 3 strongly-typed floats

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119310

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2025-03-18
             Status|UNCONFIRMED                 |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |pinskia at gcc dot 
gnu.org
          Component|middle-end                  |tree-optimization

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed.

Part of it I will be solving for GCC 16.

With a set of patches I can get:
```
_Z7bitCastSt5arrayIfLm3EE:
.LFB637:
        .cfi_startproc
        movq    %xmm1, %rax
        movd    %eax, %xmm1
        ret

```

Which is much better.