[Bug tree-optimization/115201] Recursion not optimized for structs arguments

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115201

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |FIXME
           See Also|                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=17749

--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
              /* The parameter should be a real operand, so that phi node
                 created for it at the start of the function has the meaning
                 of copying the value.  This test implies is_gimple_reg_type
                 from the previous condition, however this one could be
                 relaxed by being more careful with copying the new value
                 of the parameter (emitting appropriate GIMPLE_ASSIGN and
                 updating the virtual operands).  */

So this has been a known issue for a long time now.