nios2-protos.h (nios2_symbol_ref_in_small_data_p): Delete extern declaration.

nios2-protos.h (nios2_symbol_ref_in_small_data_p): Delete extern declaration.

2015-07-05  Chung-Lin Tang  <cltang@codesourcery.com>
	    Sandra Loosemore <sandra@codesourcery.com>

	gcc/
	* config/nios2/nios2-protos.h (nios2_symbol_ref_in_small_data_p):
	Delete extern declaration.
	(gprel_constant_p): Add extern declaration.
	* config/nios2/constraints.md ("S"): Use gprel_constant_p
	instead of nios2_symbol_ref_in_small_data_p.
	* config/nios2/nios2.c (nios2_legitimate_address_p): Likewise.
	(nios2_symbol_ref_in_small_data_p): Make static.
	(gprel_constant_p): Make non-static.

	gcc/testsuite/
	* gcc.target/nios2/gprel-offset.c: New test.

Co-Authored-By: Sandra Loosemore <sandra@codesourcery.com>
From-SVN: r225437