re PR bootstrap/43684 (multiple 'set but not used' errors.)

re PR bootstrap/43684 (multiple 'set but not used' errors.)

gcc/
2010-04-09  Iain Sandoe  <iains@gcc.gnu.org>

	PR bootstrap/43684
	* varasm.c (default_assemble_visibility): Wrap vars that are
	set, but unused, by targets without GAS.
	* config/rs6000/rs6000.c: (paired_emit_vector_compare):
	Remove set, but unused, vars.
	(rs6000_legitimize_tls_address): Likewise.
	(altivec_expand_dst_builtin): Likewise.
	* config/darwin.c (machopic_classify_symbol): Likewise.
	(machopic_indirection_name): Likewise.

gcc/fortran/
2010-04-09  Iain Sandoe  <iains@gcc.gnu.org>

	PR bootstrap/43684
	* gfortranspec.c (lang_specific_driver): Do not expose vars
	only used by HAVE_LD_STATIC_DYNAMIC targets unless compiling
	for such.

From-SVN: r158164