diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Support/xxhash.cpp | 11 |
1 files changed, 0 insertions, 11 deletions
diff --git a/llvm/lib/Support/xxhash.cpp b/llvm/lib/Support/xxhash.cpp index a080329..607789b 100644 --- a/llvm/lib/Support/xxhash.cpp +++ b/llvm/lib/Support/xxhash.cpp @@ -453,18 +453,7 @@ uint64_t llvm::xxh3_64bits(ArrayRef<uint8_t> data) { #define XXH_rotl64(x, r) (((x) << (r)) | ((x) >> (64 - (r)))) #endif -#if defined(_MSC_VER) && defined(_M_IX86) -#define XXH_mult32to64(x, y) __emulu((unsigned)(x), (unsigned)(y)) -#else -/* - * Downcast + upcast is usually better than masking on older compilers like - * GCC 4.2 (especially 32-bit ones), all without affecting newer compilers. - * - * The other method, (x & 0xFFFFFFFF) * (y & 0xFFFFFFFF), will AND both operands - * and perform a full 64x64 multiply -- entirely redundant on 32-bit. - */ #define XXH_mult32to64(x, y) ((uint64_t)(uint32_t)(x) * (uint64_t)(uint32_t)(y)) -#endif /*! * @brief Calculates a 64->128-bit long multiply. |