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Widen ZSTD_wildcopy to 32 bytes

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This commit is contained in:
Nick Terrell
2019-09-20 00:52:15 -07:00
parent efd37a64ea
commit cdad7fa512
2 changed files with 18 additions and 16 deletions
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lib/common/zstd_internal.h
+3 -3
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@@ -197,7 +197,7 @@ static void ZSTD_copy8(void* dst, const void* src) { memcpy(dst, src, 8); }
static void ZSTD_copy16(void* dst, const void* src) { memcpy(dst, src, 16); }
#define COPY16(d,s) { ZSTD_copy16(d,s); d+=16; s+=16; }
#define WILDCOPY_OVERLENGTH 16
#define WILDCOPY_OVERLENGTH 32
#define WILDCOPY_VECLEN 16
typedef enum {
@@ -237,11 +237,11 @@ void ZSTD_wildcopy(void* dst, const void* src, ptrdiff_t length, ZSTD_overlap_e
* On clang-8 unrolling once is +1.4%, twice is +3.3%, thrice is +3%.
*/
COPY16(op, ip);
if (op >= oend) return;
COPY16(op, ip);
if (op >= oend) return;
do {
COPY16(op, ip);
COPY16(op, ip);
}
while (op < oend);
}
@@ -257,7 +257,7 @@ MEM_STATIC void ZSTD_wildcopy8(void* dst, const void* src, ptrdiff_t length)
BYTE* op = (BYTE*)dst;
BYTE* const oend = (BYTE*)op + length;
do {
COPY8(op, ip)
COPY8(op, ip);
} while (op < oend);
}