cne_cmp_x86.h

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/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright (c) 2015-2022 Intel Corporation
 */
#include <cne_vect.h>
 
/* Functions to compare multiple of 16 byte keys (up to 128 bytes) */
static int
cne_hash_k16_cmp_eq(const void *key1, const void *key2, size_t key_len __cne_unused)
{
    const __m128i k1 = _mm_loadu_si128((const __m128i *)key1);
    const __m128i k2 = _mm_loadu_si128((const __m128i *)key2);
    const __m128i x  = _mm_xor_si128(k1, k2);
 
    return !_mm_test_all_zeros(x, x);
}
 
static int
cne_hash_k32_cmp_eq(const void *key1, const void *key2, size_t key_len)
{
    return cne_hash_k16_cmp_eq(key1, key2, key_len) ||
           cne_hash_k16_cmp_eq((const char *)key1 + 16, (const char *)key2 + 16, key_len);
}
 
static int
cne_hash_k48_cmp_eq(const void *key1, const void *key2, size_t key_len)
{
    return cne_hash_k16_cmp_eq(key1, key2, key_len) ||
           cne_hash_k16_cmp_eq((const char *)key1 + 16, (const char *)key2 + 16, key_len) ||
           cne_hash_k16_cmp_eq((const char *)key1 + 32, (const char *)key2 + 32, key_len);
}
 
static int
cne_hash_k64_cmp_eq(const void *key1, const void *key2, size_t key_len)
{
    return cne_hash_k32_cmp_eq(key1, key2, key_len) ||
           cne_hash_k32_cmp_eq((const char *)key1 + 32, (const char *)key2 + 32, key_len);
}
 
static int
cne_hash_k80_cmp_eq(const void *key1, const void *key2, size_t key_len)
{
    return cne_hash_k64_cmp_eq(key1, key2, key_len) ||
           cne_hash_k16_cmp_eq((const char *)key1 + 64, (const char *)key2 + 64, key_len);
}
 
static int
cne_hash_k96_cmp_eq(const void *key1, const void *key2, size_t key_len)
{
    return cne_hash_k64_cmp_eq(key1, key2, key_len) ||
           cne_hash_k32_cmp_eq((const char *)key1 + 64, (const char *)key2 + 64, key_len);
}
 
static int
cne_hash_k112_cmp_eq(const void *key1, const void *key2, size_t key_len)
{
    return cne_hash_k64_cmp_eq(key1, key2, key_len) ||
           cne_hash_k32_cmp_eq((const char *)key1 + 64, (const char *)key2 + 64, key_len) ||
           cne_hash_k16_cmp_eq((const char *)key1 + 96, (const char *)key2 + 96, key_len);
}
 
static int
cne_hash_k128_cmp_eq(const void *key1, const void *key2, size_t key_len)
{
    return cne_hash_k64_cmp_eq(key1, key2, key_len) ||
           cne_hash_k64_cmp_eq((const char *)key1 + 64, (const char *)key2 + 64, key_len);
}