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| author | Yann Collet <yann.collet.73@gmail.com> | 2015-04-12 14:17:10 (GMT) |
|---|---|---|
| committer | Yann Collet <yann.collet.73@gmail.com> | 2015-04-12 14:17:10 (GMT) |
| commit | 2852b9e439d7ad27c09641b1b5d108887a159a01 (patch) | |
| tree | 4d7732a8d3abdec51632da4398cd29549a8e4cb0 /lib/lz4.c | |
| parent | 8f49666cbc5486693b84f210a1af6b71fff1133e (diff) | |
| download | lz4-2852b9e439d7ad27c09641b1b5d108887a159a01.zip lz4-2852b9e439d7ad27c09641b1b5d108887a159a01.tar.gz lz4-2852b9e439d7ad27c09641b1b5d108887a159a01.tar.bz2 | |
Fixed issue #84
Diffstat (limited to 'lib/lz4.c')
| -rw-r--r-- | lib/lz4.c | 13 |
1 files changed, 7 insertions, 6 deletions
@@ -94,6 +94,7 @@ # endif /* __STDC_VERSION__ */ #endif /* _MSC_VER */ +/* GCC_VERSION is defined into lz4.h */ #if (GCC_VERSION >= 302) || (__INTEL_COMPILER >= 800) || defined(__clang__) # define expect(expr,value) (__builtin_expect ((expr),(value)) ) #else @@ -260,7 +261,7 @@ static unsigned LZ4_NbCommonBytes (register size_t val) unsigned long r = 0; _BitScanForward64( &r, (U64)val ); return (int)(r>>3); -# elif defined(__GNUC__) && (GCC_VERSION >= 304) && !defined(LZ4_FORCE_SW_BITCOUNT) +# elif (defined(__clang__) || (GCC_VERSION >= 304)) && !defined(LZ4_FORCE_SW_BITCOUNT) return (__builtin_ctzll((U64)val) >> 3); # else static const int DeBruijnBytePos[64] = { 0, 0, 0, 0, 0, 1, 1, 2, 0, 3, 1, 3, 1, 4, 2, 7, 0, 2, 3, 6, 1, 5, 3, 5, 1, 3, 4, 4, 2, 5, 6, 7, 7, 0, 1, 2, 3, 3, 4, 6, 2, 6, 5, 5, 3, 4, 5, 6, 7, 1, 2, 4, 6, 4, 4, 5, 7, 2, 6, 5, 7, 6, 7, 7 }; @@ -273,7 +274,7 @@ static unsigned LZ4_NbCommonBytes (register size_t val) unsigned long r; _BitScanForward( &r, (U32)val ); return (int)(r>>3); -# elif defined(__GNUC__) && (GCC_VERSION >= 304) && !defined(LZ4_FORCE_SW_BITCOUNT) +# elif (defined(__clang__) || (GCC_VERSION >= 304)) && !defined(LZ4_FORCE_SW_BITCOUNT) return (__builtin_ctz((U32)val) >> 3); # else static const int DeBruijnBytePos[32] = { 0, 0, 3, 0, 3, 1, 3, 0, 3, 2, 2, 1, 3, 2, 0, 1, 3, 3, 1, 2, 2, 2, 2, 0, 3, 1, 2, 0, 1, 0, 1, 1 }; @@ -289,8 +290,8 @@ static unsigned LZ4_NbCommonBytes (register size_t val) unsigned long r = 0; _BitScanReverse64( &r, val ); return (unsigned)(r>>3); -# elif defined(__GNUC__) && (GCC_VERSION >= 304) && !defined(LZ4_FORCE_SW_BITCOUNT) - return (__builtin_clzll(val) >> 3); +# elif (defined(__clang__) || (GCC_VERSION >= 304)) && !defined(LZ4_FORCE_SW_BITCOUNT) + return (__builtin_clzll((U64)val) >> 3); # else unsigned r; if (!(val>>32)) { r=4; } else { r=0; val>>=32; } @@ -305,8 +306,8 @@ static unsigned LZ4_NbCommonBytes (register size_t val) unsigned long r = 0; _BitScanReverse( &r, (unsigned long)val ); return (unsigned)(r>>3); -# elif defined(__GNUC__) && (GCC_VERSION >= 304) && !defined(LZ4_FORCE_SW_BITCOUNT) - return (__builtin_clz(val) >> 3); +# elif (defined(__clang__) || (GCC_VERSION >= 304)) && !defined(LZ4_FORCE_SW_BITCOUNT) + return (__builtin_clz((U32)val) >> 3); # else unsigned r; if (!(val>>16)) { r=2; val>>=8; } else { r=0; val>>=24; } |