emit-rtl.c (gen_lowpart_common): Do not assume that SFmode and DFmode are UNITS_PER_WORD and 2*UNITS_PER_WORD.

2001-06-19  Eric Christopher <echristo@redhat.com>

	* emit-rtl.c (gen_lowpart_common): Do not assume that SFmode
	and DFmode are UNITS_PER_WORD and 2*UNITS_PER_WORD.  Use
	GET_MODE_BITSIZE instead of GET_MODE_SIZE/UNITS_PER_WORD.

From-SVN: r43454