re PR target/59710 (Nios2: Missing gprel optimization)

re PR target/59710 (Nios2: Missing gprel optimization)

2015-01-15  Sandra Loosemore  <sandra@codesourcery.com>

	PR target/59710

	gcc/
	* doc/invoke.texi (Option Summary): Document new Nios II
	-mgpopt= syntax.
	(Nios II Options): Likewise.
	* config/nios2/nios2.opt: Add -mgpopt= option support.
	Modify existing -mgpopt and -mno-gpopt options to be aliases.
	* config/nios2/nios2-opts.h (enum nios2_gpopt_type): New.
	* config/nios2/nios2.c (nios2_option_override): Adjust
	-mgpopt defaulting.
	(nios2_in_small_data_p): Return true for explicit small data
	sections even with -G0.
	(nios2_symbol_ref_in_small_data_p): Adjust to handle new -mgpopt=
	option choices.

	gcc/testsuite/
	* gcc.target/nios2/gpopt-all.c: New test case.
	* gcc.target/nios2/gpopt-local.c: New test case.
	* gcc.target/nios2/gpopt-global.c: New test case.
	* gcc.target/nios2/gpopt-data.c: New test case.
	* gcc.target/nios2/gpopt-none.c: New test case.

From-SVN: r219700