simplify operands of constant addresses with MINUSes

[Richard Henderson]

On Wed, Nov 22, 2000 at 08:45:58PM -0200, Alexandre Oliva wrote:
> 	* final.c (output_addr_const) [LABEL_REF]: Simplify.
> 	[MINUS]: Enclose non-CONST_INTs in parentheses.
> 	[default]: Try OUTPUT_ADDR_CONST_EXTRA.
> 	* tm.texi (OUTPUT_ADDR_CONST_EXTRA): Document it.
> 	* varasm.c (decode_rtx_const) [CONST]: If it's not something
> 	PLUS or MINUS a CONST_INT, use the whole CONST with offset 0
> 	instead of abort()ing.

I'm not completely thrilled with the OUTPUT_ADDR_CONST_EXTRA hook,
but I'll grudgingly admit that it's better than continually 
duplicating the whole output_addr_const function, as we seem to
be doing at present.

Ok.


r~