flow patch for building ia64
Mon Jul 30 09:27:00 GMT 2001
On Mon, Jul 30, 2001 at 09:14:22AM -0700, firstname.lastname@example.org wrote:
> Which of the magic pseudos should be clear?
> /*FP RA CCV UNAT PFS LC EC */
CCV, PFS, and UNAT are call used; SP FP RA LC EC are call saved.
> Are there simply numerous places which reference call_used
> or some derivitive that also should have FIXED registers or'd in
> as well?
That's one part of it. The other part is that you'd need to
update all of the backends.
> + #ifdef CALL_REALLY_USED_REGISTERS
> + static char call_really_used_regs = CALL_REALLY_USED_REGISTERS;
> + #endif
Suggest you always define this array, falling back to call_used
registers. Also, -fcall-used will need to modify this, so it
can't be static.
> + Until this problem has been
> + resolved this macro can be used to overcome the situation
> + where we have a number of 'symbolic' registers at the end
> + of the fixed register list,
Symbolic registers have nothing to do with this. LC and EC
are real hard registers and we're not treating them live
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