[Bug middle-end/29256] [4.2/4.3/4.4 regression] loop performance regression

[rakdver at gcc dot gnu dot org]

------- Comment #27 from rakdver at gcc dot gnu dot org  2008-08-06 21:56 -------
(In reply to comment #26)
> Created an attachment (id=16036)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16036&action=view) [edit]
> possible fix
> 
> One place where this can be fixed is fwprop (something like the attached
> patch).  I am not sure whether it is the right place, though; maybe cse should
> be handling this?

Also, I only checked the problem on x86; most likely, something different is
happening on ppc.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29256