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[Bug target/39423] [SH] performance regression: lost mov @(disp,Rn)
- From: "chrbr at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 11 Mar 2009 09:46:23 -0000
- Subject: [Bug target/39423] [SH] performance regression: lost mov @(disp,Rn)
- References: <bug-39423-14332@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #6 from chrbr at gcc dot gnu dot org 2009-03-11 09:46 -------
(In reply to comment #5)
> > Thanks, I tried your patch against a 4.3.3 base but it didn't fix the problem,
> > your patch canonicalizes while what I need is a distribution
>
> Read again the RTL expander hunk.
>
ah yes sorry, when I read
"
base + 2*ind - 2
now it's
base + (1-ind) * -2
"
I thought that the now what as with your patch. So it looks indeed like quite
similar to what I see. I'll try to see why it doesn't solve my case.
thanks,
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39423