[Bug middle-end/65796] unnecessary stack spills during complex numbers function calls

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65796

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2015-04-20
     Ever confirmed|0                           |1

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
There is some older bug where I noticed the same issue.  It's basically an
artifact of the x86 calling conventions and GCC going through generic
argument setup code (and RTL optimizers not being able to optimize
spill + load into unpcklps).

That said, somebody needs to find the duplicate bugreport.

PR48607 is also related.