invoke.texi (avoid-indexed-addresses): Document new option.

invoke.texi (avoid-indexed-addresses): Document new option.

	* doc/invoke.texi (avoid-indexed-addresses): Document new option.
	* config/rs6000/rs6000-protos.h (avoiding_indexed_address_p): Declare.
	* config/rs6000/rs6000.opt (avoid-indexed-addresses): New option.
	* config/rs6000/rs6000.c (rs6000_override_options): Default
	avoid-indexed-addresses on for Power6, off for everything else.
	(avoiding_indexed_address_p): New function.
	(rs6000_legitimize_address): Use it.
	(rs6000_legitimate_address): Likewise.
	* config/rs6000/rs6000.md (movXX_updateX): Likewise
	* gcc.target/powerpc/avoid-indexed-addresses.c: New test.

From-SVN: r143742