gcc/

	* config/sparc/sparc.c (sparc_conditional_register_usage): When VIS
	is enabled, mark %gsr as global.
	* config/sparc/sparc.md (UNSPEC_WRGSR): Delete.
	(wrgsr_vis, *wrgsr_sp64, wrgsr_v8plus): Don't wrap in an unspec.

gcc/testsuite/

	* gcc.target/sparc/wrgsr.c: New test.

From-SVN: r179214