addendum-01-8-byte-stride.patch
application/x-patch
Filename: addendum-01-8-byte-stride.patch
Type: application/x-patch
Part: 0
Patch
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API reference →
Format: unified
| File | + | − |
|---|---|---|
| src/include/port/pg_utf8.h | 6 | 7 |
diff --git a/src/include/port/pg_utf8.h b/src/include/port/pg_utf8.h
index dac2afc130..a0c94dd4f3 100644
--- a/src/include/port/pg_utf8.h
+++ b/src/include/port/pg_utf8.h
@@ -53,26 +53,25 @@ extern int pg_validate_utf8_fallback(const unsigned char *s, int len);
static inline int
check_ascii(const unsigned char *s, int len)
{
- uint64 half1, half2,
+ uint64 chunk,
highbit_mask;
- if (len >= 2 * sizeof(uint64))
+ if (len >= sizeof(uint64))
{
- memcpy(&half1, s, sizeof(uint64));
- memcpy(&half2, s + sizeof(uint64), sizeof(uint64));
+ memcpy(&chunk, s, sizeof(uint64));
/*
* If there are any zero bytes, bail and let the slow
* path handle it.
*/
- if (HAS_ZERO(half1) || HAS_ZERO(half2))
+ if (HAS_ZERO(chunk))
return 0;
/* Check if any bytes in this chunk have the high bit set. */
- highbit_mask = ((half1 | half2) & UINT64CONST(0x8080808080808080));
+ highbit_mask = (chunk & UINT64CONST(0x8080808080808080));
if (!highbit_mask)
- return 2 * sizeof(uint64);
+ return sizeof(uint64);
else
return 0;
}