[Bug middle-end/122757] [16 Regression] Copy prop for aggregates into calls makes worse code for constants in some cases (12 bytes)

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122757

--- Comment #9 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Here is another testcase (but not a regression):
```
typedef struct sf { float a; float b; float c;} SF;
void sf_packing (SF i, SF j);

void
call_sf_packing (void)
{
 static const SF A = {1.0F, 2.0F, 3.0F};
 sf_packing ( A, A);
}
```