[Bug middle-end/45090] x86_64 passing structure by value to a non-inlined function causes register-resident structures to flush to stack

[pinskia at gcc dot gnu dot org]

------- Comment #1 from pinskia at gcc dot gnu dot org  2010-07-26 21:24 -------
I think this is correct behavior dealing with how x86_64 ABI describes struct
passing and almost all registers are volatile.

Oh on the trunk test3 gets compiled into a simple loop without any struct being
saved and that is a different issue with the movl, see PR 20408.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|c++                         |middle-end


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45090