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remove crc64 remnants

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Steve Markgraf 2026-02-05 01:37:45 +01:00
parent 7ef220c7aa
commit ad0790ee79
2 changed files with 0 additions and 57 deletions
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4
include/crc_simd.h
View file

@ -17,10 +17,6 @@
/* Feature detection */
bool crc_simd_available(void);
/* CRC64 SIMD functions - use Jones polynomial 0xad93d23594c935a9 */
void crc64_simd_init(void);
uint64_t crc64_simd(uint64_t crc, const void *data, uint64_t len);
/* CRC16 SIMD functions - use CRC-16-CCITT polynomial 0x1021 */
void crc16_simd_init(void);
uint16_t crc16_simd(uint16_t crc, const void *data, uint64_t len);

53
src/crc_simd.c
View file

@ -7,7 +7,6 @@
* PCLMULQDQ Instruction" whitepaper and Intel ISA-L implementation.
*
* Supports:
* - CRC64-Jones: polynomial 0xad93d23594c935a9 (reflected)
* - CRC16-CCITT: polynomial 0x1021 (non-reflected)
*
* References:
@ -73,35 +72,6 @@ bool crc_simd_available(void) {
return g_simd_available;
}
/* ============================================================================
* CRC64 Jones Polynomial: 0xad93d23594c935a9 (reflected)
*
* Constants from Intel ISA-L crc64_jones_refl_by8.asm
* ============================================================================
*/
/* 16-byte folding constants */
#define CRC64_RK1 UINT64_C(0x381d0015c96f4444)
#define CRC64_RK2 UINT64_C(0xd9d7be7d505da32c)
/* 128-byte folding constants */
#define CRC64_RK3 UINT64_C(0x768361524d29ed0b)
#define CRC64_RK4 UINT64_C(0xcc26fa7c57f8054c)
/* 8-way reduction constants */
#define CRC64_RK9 UINT64_C(0x5bc94ba8e2087636)
#define CRC64_RK10 UINT64_C(0x6cf09c8f37710b75)
#define CRC64_RK11 UINT64_C(0x3885fd59e440d95a)
#define CRC64_RK12 UINT64_C(0xbccba3936411fb7e)
#define CRC64_RK13 UINT64_C(0xe4dd0d81cbfce585)
#define CRC64_RK14 UINT64_C(0xb715e37b96ed8633)
#define CRC64_RK15 UINT64_C(0xf49784a634f014e4)
#define CRC64_RK16 UINT64_C(0xaf86efb16d9ab4fb)
#define CRC64_RK17 UINT64_C(0x7b3211a760160db8)
#define CRC64_RK18 UINT64_C(0xa062b2319d66692f)
#define CRC64_RK19 UINT64_C(0xef3d1d18ed889ed2)
#define CRC64_RK20 UINT64_C(0x6ba4d760ab38201e)
/* ============================================================================
* CRC16-CCITT Polynomial: 0x1021 (non-reflected)
*
@ -142,13 +112,6 @@ bool crc_simd_available(void) {
#if defined(ARCH_X86)
/* Helper: fold one 128-bit block for CRC64 (reflected) */
static inline __m128i fold_128(__m128i acc, __m128i data, __m128i k1k2) {
__m128i t1 = _mm_clmulepi64_si128(acc, k1k2, 0x00);
__m128i t2 = _mm_clmulepi64_si128(acc, k1k2, 0x11);
return _mm_xor_si128(_mm_xor_si128(t1, t2), data);
}
/* Helper: byte-swap a 128-bit register (used for CRC16 non-reflected) */
__attribute__((unused)) static inline __m128i bswap_128(__m128i x) {
const __m128i mask =
@ -172,10 +135,6 @@ fold_128_16(__m128i acc, __m128i data, __m128i k1k2) {
return _mm_xor_si128(_mm_xor_si128(t1, t2), data);
}
void crc64_simd_init(void) {
crc_simd_available();
}
/* ============================================================================
* CRC16 SIMD Implementation (x86/x64 with PCLMULQDQ)
*
@ -314,10 +273,6 @@ static inline uint8x16_t bswap_128_neon(uint8x16_t x) {
}
#endif
void crc64_simd_init(void) {
crc_simd_available();
}
/* ============================================================================
* CRC16 SIMD Implementation for ARM64
*
@ -437,14 +392,6 @@ void crc16_simd_init(void) {
bool crc_simd_available(void);
uint64_t crc64_simd(uint64_t crc, const void *data, uint64_t len) {
extern uint64_t crc64speed(uint64_t crc, const void *s, const uint64_t l);
return crc64speed(crc, data, len);
}
void crc64_simd_init(void) {
}
uint16_t crc16_simd(uint16_t crc, const void *data, uint64_t len) {
extern uint16_t crc16speed(uint16_t crc, const void *s, const uint64_t l);
return crc16speed(crc, data, len);