PRE_GCC3_DWARF_FRAME_REGISTERS

[David Edelsohn]

On Wed, Mar 14, 2012 at 10:08 AM, Steven Bosscher <stevenb.gcc@gmail.com> wrote:
> Hello,
>
> The rs6000 and cr16 backends and unwinding code have a define for the
> DWARF frame register for pre-GCC3 compatibility
> (PRE_GCC3_DWARF_FRAME_REGISTERS):
>
> gcc/doc/tm.texi.in:@defmac PRE_GCC3_DWARF_FRAME_REGISTERS
> gcc/doc/tm.texi:@defmac PRE_GCC3_DWARF_FRAME_REGISTERS
> gcc/config/rs6000/rs6000.h:#define PRE_GCC3_DWARF_FRAME_REGISTERS 77

> Is this compatibility still needed for rs6000, or can all the
> PRE_GCC3_DWARF_FRAME_REGISTERS stuff be cleaned up?

I do not see any reason that compatibility with pre-GCC3 still should
be necessary.  The code was added by RTH and Aldy in 2001, so I want
to make sure they are not aware of any remaining dependency.

Thanks, David