re PR target/44707 (operand requires impossible reload)

	PR target/44707
	* config/sparc/sparc-protos.h (sparc_legitimize_reload_address): New.
	* config/sparc/sparc.c: Include reload.h.
	(legitimize_tls_address): Rename into...
	(sparc_legitimize_tls_address): ...this.
	(legitimize_pic_address): Rename into...
	(sparc_legitimize_pic_address): ...this.
	(sparc_expand_move): Adjust to above renaming.
	(sparc_tls_referenced_p): Likewise.
	(sparc_legitimize_tls_address): Likewise.
	(sparc_legitimize_pic_address): Likewise.
	(sparc_legitimize_address): Likewise.
	(sparc_output_mi_thunk): Likewise.
	(sparc_legitimize_reload_address): New global function.  Recognize
	(lo_sum (high ...) ...) patterns generated by earlier passes.
	* config/sparc/sparc.h (LEGITIMIZE_RELOAD_ADDRESS): Use above function.

From-SVN: r162521