sse.md (vec_widen_smult_hi_v8hi, [...]): Macroize using VI2_AVX2 mode iterator and...

sse.md (vec_widen_smult_hi_v8hi, [...]): Macroize using VI2_AVX2 mode iterator and any_extend code iterator.

	* config/i386/sse.md (vec_widen_smult_hi_v8hi,
	vec_widen_smult_lo_v8hi, vec_widen_umult_hi_v8hi,
	vec_widen_umult_lo_v8hi): Macroize using VI2_AVX2
	mode iterator and any_extend code iterator.
	(vec_widen_<s>mult_hi_v8si, vec_widen_<s>mult_lo_v8si): New
	expanders.
	(vec_widen_smult_hi_v4si, vec_widen_smult_lo_v4si): Enable
	also for TARGET_SSE4_1 using pmuldq insn.
	(sdot_prodv8hi): Macroize using VI2_AVX2 iterator.
	(sse2_sse4_1): New code attr.
	(udot_prodv4si): Macroize using any_extend code iterator.
	(<s>dot_prodv8si): New expander.

	* gcc.target/i386/sse2-mul-1.c: New test.
	* gcc.target/i386/sse4_1-mul-1.c: New test.
	* gcc.target/i386/avx-mul-1.c: New test.
	* gcc.target/i386/xop-mul-1.c: New test.
	* gcc.target/i386/avx2-mul-1.c: New test.

From-SVN: r180005