i386.c (ix86_expand_clrmem): Move gen_cld down to the places where it is actually...

i386.c (ix86_expand_clrmem): Move gen_cld down to the places where it is actually needed.

	* config/i386/i386.c (ix86_expand_clrmem): Move gen_cld down to
	the places where it is actually needed.  Don't use repz; stosb
	for -Os with sufficiently small constant sizes.
	For sufficiently small repz; stos{l,q} repeat counts use a sequence
	of stos{l,q} instructions instead.

From-SVN: r85635