diff options
Diffstat (limited to 'liblzma/common/memcmplen.h')
| -rw-r--r-- | liblzma/common/memcmplen.h | 19 |
1 files changed, 4 insertions, 15 deletions
diff --git a/liblzma/common/memcmplen.h b/liblzma/common/memcmplen.h index c1efc9e..dcfd8d6 100644 --- a/liblzma/common/memcmplen.h +++ b/liblzma/common/memcmplen.h @@ -61,8 +61,7 @@ lzma_memcmplen(const uint8_t *buf1, const uint8_t *buf2, // to __builtin_clzll(). #define LZMA_MEMCMPLEN_EXTRA 8 while (len < limit) { - const uint64_t x = *(const uint64_t *)(buf1 + len) - - *(const uint64_t *)(buf2 + len); + const uint64_t x = read64ne(buf1 + len) - read64ne(buf2 + len); if (x != 0) { # if defined(_M_X64) // MSVC or Intel C compiler on Windows unsigned long tmp; @@ -99,15 +98,7 @@ lzma_memcmplen(const uint8_t *buf1, const uint8_t *buf2, _mm_loadu_si128((const __m128i *)(buf2 + len)))); if (x != 0) { -# if defined(__INTEL_COMPILER) - len += _bit_scan_forward(x); -# elif defined(_MSC_VER) - unsigned long tmp; - _BitScanForward(&tmp, x); - len += tmp; -# else - len += __builtin_ctz(x); -# endif + len += ctz32(x); return my_min(len, limit); } @@ -120,8 +111,7 @@ lzma_memcmplen(const uint8_t *buf1, const uint8_t *buf2, // Generic 32-bit little endian method # define LZMA_MEMCMPLEN_EXTRA 4 while (len < limit) { - uint32_t x = *(const uint32_t *)(buf1 + len) - - *(const uint32_t *)(buf2 + len); + uint32_t x = read32ne(buf1 + len) - read32ne(buf2 + len); if (x != 0) { if ((x & 0xFFFF) == 0) { len += 2; @@ -143,8 +133,7 @@ lzma_memcmplen(const uint8_t *buf1, const uint8_t *buf2, // Generic 32-bit big endian method # define LZMA_MEMCMPLEN_EXTRA 4 while (len < limit) { - uint32_t x = *(const uint32_t *)(buf1 + len) - ^ *(const uint32_t *)(buf2 + len); + uint32_t x = read32ne(buf1 + len) ^ read32ne(buf2 + len); if (x != 0) { if ((x & 0xFFFF0000) == 0) { len += 2; |