[x86,avx] Fix __builtin_cpu_supports for icelake and cannonlake isa

[Koval, Julia]

Hi,
This patch fixes subj. Ok for trunk?

gcc/
        * config/i386/i386.c (F_AVX512VBMI2, F_GFNI, F_VPCLMULQDQ, F_AVX512VNNI,
        F_AVX512BITALG): New.

gcc/testsuite/
        * gcc.target/i386/builtin_target.c (check_intel_cpu_model): Add 
cannonlake.
        (check_features): Add avx512vbmi2, gfni, vpclmulqdq, avx512vnni,
        avx512bitalg.

libgcc/
        * config/i386/cpuinfo.c (get_available_features): Add 
FEATURE_AVX512VBMI2,
        FEATURE_GFNI, FEATURE_VPCLMULQDQ, FEATURE_AVX512VNNI, 
FEATURE_AVX512BITALG.
        * config/i386/cpuinfo.h (processor_features) Add FEATURE_AVX512VBMI2,
        FEATURE_GFNI, FEATURE_VPCLMULQDQ, FEATURE_AVX512VNNI, 
FEATURE_AVX512BITALG.

0001-new-isa-builtin_cpu-test.patch
Description: 0001-new-isa-builtin_cpu-test.patch