diff options
Diffstat (limited to 'lib/legacy/zstd_v04.c')
| -rw-r--r-- | lib/legacy/zstd_v04.c | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/lib/legacy/zstd_v04.c b/lib/legacy/zstd_v04.c index 77d52555b313..8d305c7eae9e 100644 --- a/lib/legacy/zstd_v04.c +++ b/lib/legacy/zstd_v04.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2016-2020, Yann Collet, Facebook, Inc. + * Copyright (c) Yann Collet, Facebook, Inc. * All rights reserved. * * This source code is licensed under both the BSD-style license (found in the @@ -101,10 +101,7 @@ extern "C" { * Prefer these methods in priority order (0 > 1 > 2) */ #ifndef MEM_FORCE_MEMORY_ACCESS /* can be defined externally, on command line for example */ -# if defined(__GNUC__) && ( defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) || defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_6T2__) ) -# define MEM_FORCE_MEMORY_ACCESS 2 -# elif (defined(__INTEL_COMPILER) && !defined(WIN32)) || \ - (defined(__GNUC__) && ( defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7S__) )) +# if defined(__INTEL_COMPILER) || defined(__GNUC__) || defined(__ICCARM__) # define MEM_FORCE_MEMORY_ACCESS 1 # endif #endif @@ -627,9 +624,8 @@ MEM_STATIC size_t BIT_readBitsFast(BIT_DStream_t* bitD, unsigned nbBits); MEM_STATIC unsigned BIT_highbit32 (U32 val) { # if defined(_MSC_VER) /* Visual */ - unsigned long r=0; - _BitScanReverse ( &r, val ); - return (unsigned) r; + unsigned long r; + return _BitScanReverse(&r, val) ? (unsigned)r : 0; # elif defined(__GNUC__) && (__GNUC__ >= 3) /* Use GCC Intrinsic */ return __builtin_clz (val) ^ 31; # else /* Software version */ |