On Sat, Dec 8, 2012 at 2:14 AM, Richard Sandiford <rdsandif...@googlemail.com> wrote: > > As far as the dwarf2out.c bits go, I think the original dbx_reg_number assert: > > gcc_assert (regno != INVALID_REGNUM); > > should become: > > gcc_assert (regno != INVALID_REGNUM && regno != IGNORED_DWARF_REGNUM); > > since it's the caller's job to handle this case. >
I don't think if it will work since dbx_reg_number is called to get debug register number and the register is ignored if its return value is IGNORED_DWARF_REGNUM. On the other hand, we should cache the return value of dbx_reg_number(rtl), instead of calling it twice. -- H.J.
