re PR target/59316 (gcc.dg/atomic/c11-atomic-exec-5.c FAILs on Solaris/SPARC)

	PR target/59316
	* config/sparc/sparc.h (SPARC_LOW_FE_EXCEPT_VALUES): Define.
	* config/sparc/sol2.h (SPARC_LOW_FE_EXCEPT_VALUES): Redefine.
	* config/sparc/sparc.c (TARGET_INIT_BUILTINS): Move around.
	(TARGET_BUILTIN_DECL): Define.
	(TARGET_ATOMIC_ASSIGN_EXPAND_FENV): Likewise.
	(sparc32_initialize_trampoline): Adjust call to gen_flush.
	(enum sparc_builtins): New enumeral type.
	(sparc_builtins): New static array.
	(sparc_builtins_icode): Likewise.
	(def_builtin): Accept a separate icode and save the result.
	(def_builtin_const): Likewise.
	(sparc_fpu_init_builtins): New function.
	(sparc_vis_init_builtins): Pass the builtin code.
	(sparc_init_builtins): Call it if TARGET_FPU.
	(sparc_builtin_decl): New function.
	(sparc_expand_builtin): Deal with SPARC_BUILTIN_{LD,ST}FSR.
	(sparc_handle_vis_mul8x16): Use the builtin code.
	(sparc_fold_builtin): Likewise.  Deal with SPARC_BUILTIN_{LD,ST}FSR
	and SPARC_BUILTIN_PDISTN.
	(compound_expr): New helper function.
	(sparc_atomic_assign_expand_fenv): New function.
	* config/sparc/sparc.md (unspecv): Reorder values, add UNSPECV_LDFSR
	and UNSPECV_STFSR.
	(flush, flushdi): Merge into single pattern.
	(ldfsr): New instruction.
	(stfsr): Likewise.

From-SVN: r205735