configure.ac: Test if linker and assembler properly support GOTDATA_OP relocations.

configure.ac: Test if linker and assembler properly support GOTDATA_OP relocations.

gcc/

2010-02-20  David S. Miller  <davem@davemloft.net>

	* configure.ac: Test if linker and assembler properly support
	GOTDATA_OP relocations.
	* configure: Rebuild.
	* config.in: Likewise.
	* config/sparc/sparc.md (UNSPEC_MOVE_GOTDATA): New.
	(movsi_lo_sum_pic): Use %gdop_*() relocs if available.
	(movsi_high_pic): Likewise.
	(movdi_lo_sum_pic): Likewise.
	(movdi_high_pic): Likewise.
	(movsi_pic_gotdata_op): New pattern.
	(movdi_pic_gotdata_op): Likewise.
	* config/sparc/sparc.c (legitimize_pic_address): If flag_pic is 2,
	emit gen_mov{si,di}_pic_gotdata_op for the GOT slot load.

From-SVN: r156933