i386.c (ix86_build_const_vector): Handle V8SImode and V4DImode.

i386.c (ix86_build_const_vector): Handle V8SImode and V4DImode.

	* config/i386/i386.c (ix86_build_const_vector): Handle V8SImode
	and V4DImode.
	(ix86_build_signbit_mask): Likewise.
	(ix86_expand_int_vcond): Likewise.  Handle V16HImode and
	V32QImode.
	(bdesc_args): Use CODE_FOR_{s,u}m{ax,in}v{32q,16h,8s}i3
	instead of CODE_FOR_avx2_{s,u}m{ax,in}v{32q,16h,8s}i3.
	* config/i386/sse.md (avx2_<code><mode>3 umaxmin expand): Rename
	to...
	(<code><mode>3) ... this.
	(avx2_<code><mode>3 smaxmin expand): Rename to...
	(<code><mode>3) ... this.
	(smax<mode>3, smin<mode>3): Macroize using smaxmin code iterator.
	(smaxv2di3, sminv2di3): Macroize using smaxmin code iterator and
	VI8_AVX2 mode iterator.
	(umaxv2di3, uminv2di3): Macroize using umaxmin code iterator and
	VI8_AVX2 mode iterator.
	(vcond<V_256:mode><VI_256:mode>, vcondu<V_256:mode><VI_256:mode>):
	New expanders.

From-SVN: r178929