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[Bug rtl-optimization/44194] struct returned by value generates useless stores
- From: "xinliangli at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sat, 18 Jun 2011 16:34:27 +0000
- Subject: [Bug rtl-optimization/44194] struct returned by value generates useless stores
- Auto-submitted: auto-generated
- References: <bug-44194-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44194
--- Comment #31 from davidxl <xinliangli at gmail dot com> 2011-06-18 16:32:32 UTC ---
(In reply to comment #30)
> > Is Easwaran's patch a reasonable way to go?
>
> So, in the end, you weren't talking about the general situation, were you?
> Let's try first to avoid spilling to memory, if possible.
I think these two are totally independent of each other -- one should not be
gated against each other. If Eawaran's approach is completely flawed, that is
different story. With this change, we at least make incremental improvement.
Not familiar with the rtl expander, but I guess the spilling was there probably
for a deeper reason. If you have an insight, you can of course point it out.
Again, I think these two things are not in conflict.
David