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[Bug target/43892] PowerPC suboptimal "add with carry" optimization
- From: "joakim dot tjernlund at transmode dot se" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 25 May 2010 21:42:20 -0000
- Subject: [Bug target/43892] PowerPC suboptimal "add with carry" optimization
- References: <bug-43892-19087@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #13 from joakim dot tjernlund at transmode dot se 2010-05-25 21:42 -------
(In reply to comment #12)
> (In reply to comment #11)
> > If this is the case for something as simple as add with carry, one really
> > needs a simple way to tell gcc what ppc class CPU one wants to use.
>
> Please see -mcpu= .
>
Almost forgot, but how do I specify that at gcc build/configure ?
Also, I haven't seen any progress on this issue even though it sounded that the
initial fix was easy(add<mode>cc expander)
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43892