re PR target/85832 ([AVX512] possible shorter code when comparing with vector of...

re PR target/85832 ([AVX512] possible shorter code when comparing with vector of zeros)

	PR target/85832
	* config/i386/sse.md (<avx512>_eq<mode>3<mask_scalar_merge_name>_1):
	Add (=Yk,v,C) variant using vptestm insn.  Use TARGET_AVX512BW
	in test instead of TARGET_AVX512F for VI12_AVX512VL iterator.

	* gcc.target/i386/avx512f-pr85832.c: New test.
	* gcc.target/i386/avx512vl-pr85832.c: New test.
	* gcc.target/i386/avx512bw-pr85832.c: New test.
	* gcc.target/i386/avx512vlbw-pr85832.c: New test.

From-SVN: r260756