Debugging option while porting GCC

[Ian Lance Taylor]

"Kim, Eunchan" <helpbygrace@gmail.com> writes:

> I found reg/f means that it is frame related register. But i didn't
> understand why my sp, which is elim in this function, is (reg:SI) not
> (reg/f:SI).
>
> does anyone know why this is happened?

Look at your ELIMINABLE_REGS macro.  There is most likely something
wrong with it.  Or you have defined STACK_POINTER_REGNUM and
HARD_FRAME_POINTER_REGNUM to have the same value, or something like
that.

Ian