Re: [m68k] register renaming not properly tracking used registers

[Mark Mitchell <mark at codesourcery dot com>]

Peter Barada wrote:

> > > > gcc/ChangeLog:
> > > > 2004-09-103  Peter Barada <peter@the-baradas.com>
> > > >    * config/m68k/m68k.h (HARD_REGNO_RENAME_OK): New macro.
> > > >    * config/m68k/m68k.c (m68k_hard regno_rename_ok): Disallow
> > > >      renaming of non-live registers in interrupt functions.
> > > >    * config/m68k/m68k-protos.h (m68k_hard_regno_rename_ok): Add 
> > > > prototype.
> > > >        
> > >
> > > Thanks, I've committed your patch on mainline (with a couple of
> > > trivial spacing fixes).
> > >
> > > I'd also like to backport it to 3.4, with Mark's approval.
> > >      
> > Does it fix a regression?
> >    
>
> BTW, I *completely* messed up the date in the ChangeLog entry...
>
> I don't know if its a regression.
>
> I can pull out and build previous versions to see if this bug is there
> or not if you want.  Which gcc versions should I check?
>  
Any and all previous ones; if there's a previous release that gets this 
right, then we would want to apply the fix to the 3.4 branch.

Thanks,

--
Mark Mitchell
CodeSourcery, LLC
(916) 791-8304
mark@codesourcery.com