diff options
Diffstat (limited to 'lib/lz4.c')
| -rw-r--r-- | lib/lz4.c | 21 |
1 files changed, 16 insertions, 5 deletions
@@ -202,6 +202,7 @@ typedef size_t reg_t; /* 32-bits in x32 mode */ #endif + /*-************************************ * Reading and writing into memory **************************************/ @@ -235,7 +236,7 @@ static reg_t LZ4_read_ARCH(const void* ptr) { return ((const unalign*)ptr)->uArc static void LZ4_write16(void* memPtr, U16 value) { ((unalign*)memPtr)->u16 = value; } static void LZ4_write32(void* memPtr, U32 value) { ((unalign*)memPtr)->u32 = value; } -#else /* safe and portable access through memcpy() */ +#else /* safe and portable access using memcpy() */ static U16 LZ4_read16(const void* memPtr) { @@ -301,7 +302,15 @@ static const unsigned inc32table[8] = {0, 1, 2, 1, 0, 4, 4, 4}; static const int dec64table[8] = {0, 0, 0, -1, -4, 1, 2, 3}; -#if defined(__i386__) || defined(__x86_64__) +#ifndef LZ4_FAST_DEC_LOOP +# if defined(__i386__) || defined(__x86_64__) +# define LZ4_FAST_DEC_LOOP 1 +# else +# define LZ4_FAST_DEC_LOOP 0 +# endif +#endif + +#if LZ4_FAST_DEC_LOOP LZ4_FORCE_O2_INLINE_GCC_PPC64LE void LZ4_memcpy_using_offset_base(BYTE* dstPtr, const BYTE* srcPtr, BYTE* dstEnd, const size_t offset) { if (offset < 8) { @@ -367,6 +376,8 @@ void LZ4_memcpy_using_offset(BYTE* dstPtr, const BYTE* srcPtr, BYTE* dstEnd, con } } #endif + + /*-************************************ * Common Constants **************************************/ @@ -1590,7 +1601,7 @@ LZ4_decompress_generic( if ((endOnInput) && unlikely(srcSize==0)) return -1; /* Currently the fast loop shows a regression on qualcomm arm chips. */ -#if defined(__i386__) || defined(__x86_64__) +#if LZ4_FAST_DEC_LOOP if ((oend - op) < FASTLOOP_SAFE_DISTANCE) goto safe_decode; @@ -1773,7 +1784,7 @@ LZ4_decompress_generic( /* copy literals */ cpy = op+length; -#if defined(__i386__) || defined(__x86_64__) +#if LZ4_FAST_DEC_LOOP safe_literal_copy: #endif LZ4_STATIC_ASSERT(MFLIMIT >= WILDCOPYLENGTH); @@ -1823,7 +1834,7 @@ LZ4_decompress_generic( } length += MINMATCH; -#if defined(__i386__) || defined(__x86_64__) +#if LZ4_FAST_DEC_LOOP safe_match_copy: #endif /* match starting within external dictionary */ |