re PR target/46729 (32-bit 30_threads execution tests fail on Solaris 10/SPARC with...

re PR target/46729 (32-bit 30_threads execution tests fail on Solaris 10/SPARC with Sun as)

	PR target/46729
	* config/sparc/sparc.h (GLOBAL_OFFSET_TABLE_REGNUM): New macro.
	(PIC_OFFSET_TABLE_REGNUM): Rewrite in terms of above macro.
	* config/sparc/sparc.c (pic_helper_needed): Delete.
	(global_offset_table): Likewise.
	(pic_helper_symbol): Rename to...
	(got_helper_rtx): ...this.
	(global_offset_table_rtx): New global variable.
	(sparc_got_symbol): Likewise.
	(sparc_got): New static function.
	(check_pic): Use local variable and call sparc_got.
	(sparc_tls_symbol): Initialize to NULL_RTX.
	(sparc_tls_got): In non-PIC mode, reload the GOT register for Sun TLS
	and 32-bit ABI and copy the GOT symbol to a new register otherwise.
	(get_pc_thunk_name): Rename local variable.
	(gen_load_pcrel_sym): New wrapper around load_pcrel_sym{si,di}.
	(load_pic_register): Rename to...
	(load_got_register): ...this.  Adjust and call gen_load_pcrel_sym.
	(sparc_expand_prologue): Do not test flag_pic.
	(sparc_output_mi_thunk): Use pic_offset_table_rtx directly.
	(sparc_file_end): Test got_helper_rtx instead of pic_helper_needed.
	Rename local variable and do not call get_pc_thunk_name again.
	* config/sparc/sparc.md (load_pcrel_sym): Add operand #3.

From-SVN: r168049