This is the mail archive of the
gcc-patches@gcc.gnu.org
mailing list for the GCC project.
Re: [patch, mips, debug] Fix PR 54061, mips compiler aborts in testsuite
On Fri, 2012-12-07 at 14:43 -0800, H.J. Lu wrote:
> > I think you need a way to tell a bad register from a good register
> > which doesn't have DWARF register number.
> >
>
> Something like
>
> #define IGNORED_DWARF_REGNUM (INVALID_REGNUM - 1)
The other option would be to have a new macro that returned true or
false if a register had a dbx register number.
#define VALID_DBX_REGNUM(regno) (true)
and check that instead of checking the return of dbx_reg_number().
A target would override this default definition of VALID_DBX_REGNUM
for registers it wanted to ignore. It should probably be a target
macro but so should DBX_REGISTER_NUMBER and DWARF_FRAME_REGNUM, we
probably don't want to be making that change at this time in the release
cycle.
Steve Ellcey
sellcey@mips.com