re PR middle-end/85090 (wrong code with -O2 -fno-tree-dominator-opts -mavx512f -fira...

re PR middle-end/85090 (wrong code with -O2 -fno-tree-dominator-opts -mavx512f -fira-algorithm=priority)

	PR middle-end/85090
	* config/i386/sse.md (V): Add V64QI and V32HI for TARGET_AVX512F.
	(V_128_256): New mode iterator.
	(*avx512dq_vextract<shuffletype>64x2_1 splitter): New define_split.
	(*avx512f_vextract<shuffletype>32x4_1 splitter): Likewise.
	(xop_pcmov_<mode><avxsizesuffix>): Use V_128_256 mode iterator instead
	of V.
	* config/i386/i386.c (ix86_expand_vector_set): Improve V32HImode and
	V64QImode expansion for !TARGET_AVX512BW && TARGET_AVX512F.

	* gcc.target/i386/avx512f-pr85090-1.c: New test.
	* gcc.target/i386/avx512f-pr85090-2.c: New test.
	* gcc.target/i386/avx512f-pr85090-3.c: New test.
	* gcc.target/i386/avx512bw-pr85090-2.c: New test.
	* gcc.target/i386/avx512bw-pr85090-3.c: New test.

From-SVN: r258994