[Bug middle-end/68378] Return value optimization does not fire iff in C mode

[ebotcazou at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68378

Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |ebotcazou at gcc dot gnu.org

--- Comment #4 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> Dunno what to do here though, undoing all DECL_ALIGN changes performed
> during compute_inline_parameters (but then for vars that are not going to be
> NRV optimized this would be an pessimization), or say undo DECL_ALIGN
> changes for vars that could be NRV optimized (appear in a return stmt,
> perhaps something more specific)?

Couldn't the NRV pass be moved up in the pipeline?  The Ada front-end (gigi)
also has its own NRV pass because the GIMPLE pass is quite ineffective.