> As advised given by you ,we defind the following marcos like
>
> #define ARG_POINTER_REGNUM 9
> #define FRAME_POINTER_REGNUM 8
ARG_POINTER_REGNUM and FRAME_POINTER_REGNUM need to be pseudo-registers if
they do not represent real registers.
> #define STACK_POINTER_REGNUM 10
>
>
> #define ELIMINABLE_REGS \
> {{ ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
> { FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}} \
>
> #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
> (OFFSET) = tlcs_initial_elimination_offset (FROM, TO)
>
> #define CAN_ELIMINATE 1
>
> #define FIRST_PARM_OFFSET 3
>
> With -O0 or by default options the frame and arg regs are not
> replaced by stack reg and the same replaced with -O1 and above
> optimisation.
Only pseudo-registers are always eliminated I think.
--
Eric Botcazou
