df-scan.c (df_get_call_refs): Mark global registers as both a DF_REF_REG_USE and a non-clobber DF_REF_REG_DEF.

gcc/:

2007-10-22  Seongbae Park <seongbae.park@gmail.com>
	David S. Miller  <davem@davemloft.net>

	* df-scan.c (df_get_call_refs): Mark global registers as both a
	DF_REF_REG_USE and a non-clobber DF_REF_REG_DEF.


gcc/testsuite/:

2007-10-22  David S. Miller  <davem@davemloft.net>

	* gcc.dg/globalreg-1.c: New test.

From-SVN: r129572