| #ifndef FALLBACK_BUILTINS_H |
| #define FALLBACK_BUILTINS_H |
| |
| #if defined(_MSC_VER) && !defined(__clang__) |
| #if defined(_M_IX86) || defined(_M_AMD64) || defined(_M_IA64) || defined(_M_ARM) || defined(_M_ARM64) |
| |
| #include <intrin.h> |
| #ifdef X86_FEATURES |
| # include "arch/x86/x86_features.h" |
| #endif |
| |
| /* This is not a general purpose replacement for __builtin_ctz. The function expects that value is != 0 |
| * Because of that assumption trailing_zero is not initialized and the return value of _BitScanForward is not checked |
| */ |
| static __forceinline unsigned long __builtin_ctz(uint32_t value) { |
| #ifdef X86_FEATURES |
| # ifndef X86_NOCHECK_TZCNT |
| if (x86_cpu_has_tzcnt) |
| # endif |
| return _tzcnt_u32(value); |
| #endif |
| unsigned long trailing_zero; |
| _BitScanForward(&trailing_zero, value); |
| return trailing_zero; |
| } |
| #define HAVE_BUILTIN_CTZ |
| |
| #ifdef _M_AMD64 |
| /* This is not a general purpose replacement for __builtin_ctzll. The function expects that value is != 0 |
| * Because of that assumption trailing_zero is not initialized and the return value of _BitScanForward64 is not checked |
| */ |
| static __forceinline unsigned long long __builtin_ctzll(uint64_t value) { |
| #ifdef X86_FEATURES |
| # ifndef X86_NOCHECK_TZCNT |
| if (x86_cpu_has_tzcnt) |
| # endif |
| return _tzcnt_u64(value); |
| #endif |
| unsigned long trailing_zero; |
| _BitScanForward64(&trailing_zero, value); |
| return trailing_zero; |
| } |
| #define HAVE_BUILTIN_CTZLL |
| #endif // Microsoft AMD64 |
| |
| #endif // Microsoft AMD64/IA64/x86/ARM/ARM64 test |
| #endif // _MSC_VER & !clang |
| |
| /* Unfortunately GCC didn't support these things until version 10. |
| * Similarly, AppleClang didn't support them in Xcode 9.2 but did in 9.3. |
| */ |
| #ifdef __AVX2__ |
| #include <immintrin.h> |
| |
| #if (!defined(__clang__) && defined(__GNUC__) && __GNUC__ < 10) \ |
| || (defined(__apple_build_version__) && __apple_build_version__ < 9020039) |
| static inline __m256i _mm256_zextsi128_si256(__m128i a) { |
| __m128i r; |
| __asm__ volatile ("vmovdqa %1,%0" : "=x" (r) : "x" (a)); |
| return _mm256_castsi128_si256(r); |
| } |
| |
| #ifdef __AVX512F__ |
| static inline __m512i _mm512_zextsi128_si512(__m128i a) { |
| __m128i r; |
| __asm__ volatile ("vmovdqa %1,%0" : "=x" (r) : "x" (a)); |
| return _mm512_castsi128_si512(r); |
| } |
| #endif // __AVX512F__ |
| #endif // gcc/AppleClang version test |
| |
| #endif // __AVX2__ |
| |
| #if defined(ARM_NEON_ADLER32) && !defined(__aarch64__) |
| /* Compatibility shim for the _high family of functions */ |
| #define vmull_high_u8(a, b) vmull_u8(vget_high_u8(a), vget_high_u8(b)) |
| #define vmlal_high_u8(a, b, c) vmlal_u8(a, vget_high_u8(b), vget_high_u8(c)) |
| #define vmlal_high_u16(a, b, c) vmlal_u16(a, vget_high_u16(b), vget_high_u16(c)) |
| #define vaddw_high_u8(a, b) vaddw_u8(a, vget_high_u8(b)) |
| #endif |
| |
| #ifdef ARM_NEON_SLIDEHASH |
| |
| #define vqsubq_u16_x4_x1(out, a, b) do { \ |
| out.val[0] = vqsubq_u16(a.val[0], b); \ |
| out.val[1] = vqsubq_u16(a.val[1], b); \ |
| out.val[2] = vqsubq_u16(a.val[2], b); \ |
| out.val[3] = vqsubq_u16(a.val[3], b); \ |
| } while (0) |
| |
| /* Have to check for hard float ABI on GCC/clang, but not |
| * on MSVC (we don't compile for the soft float ABI on windows) |
| */ |
| #if !defined(ARM_NEON_HASLD4) && (defined(__ARM_FP) || defined(_MSC_VER)) |
| |
| #ifdef _M_ARM64 |
| # include <arm64_neon.h> |
| #else |
| # include <arm_neon.h> |
| #endif |
| |
| static inline uint16x8x4_t vld1q_u16_x4(uint16_t *a) { |
| uint16x8x4_t ret = (uint16x8x4_t) {{ |
| vld1q_u16(a), |
| vld1q_u16(a+8), |
| vld1q_u16(a+16), |
| vld1q_u16(a+24)}}; |
| return ret; |
| } |
| |
| static inline uint8x16x4_t vld1q_u8_x4(uint8_t *a) { |
| uint8x16x4_t ret = (uint8x16x4_t) {{ |
| vld1q_u8(a), |
| vld1q_u8(a+16), |
| vld1q_u8(a+32), |
| vld1q_u8(a+48)}}; |
| return ret; |
| } |
| |
| static inline void vst1q_u16_x4(uint16_t *p, uint16x8x4_t a) { |
| vst1q_u16(p, a.val[0]); |
| vst1q_u16(p + 8, a.val[1]); |
| vst1q_u16(p + 16, a.val[2]); |
| vst1q_u16(p + 24, a.val[3]); |
| } |
| #endif // HASLD4 check and hard float |
| #endif // ARM_NEON_SLIDEHASH |
| |
| #endif // include guard FALLBACK_BUILTINS_H |