jvector_simd_check.c

/*
 * Copyright DataStax, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <cpuid.h>
#include "jvector_simd.h"

bool check_avx512_compatibility(void) {
    /* __builtin_cpu_init required when this is used in ifunc
       resolver/__attribute__((constructor)) context, otherwise the CPU
       features may not be detected correctly. */
    __builtin_cpu_init();
    return (__builtin_cpu_supports("avx512f") &&
        __builtin_cpu_supports("avx512cd") &&
        __builtin_cpu_supports("avx512dq") &&
        __builtin_cpu_supports("avx512bw") &&
        __builtin_cpu_supports("avx512vl"));
}