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Use 64-bit multiplication on 64-bit systems

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This commit is contained in:
Dmitry Stogov
2021-12-14 17:09:59 +03:00
parent 623b3fc83f
commit f583c4dfd2
1 changed files with 18 additions and 18 deletions
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Zend/zend_string.h
+18 -18
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@@ -429,25 +429,25 @@ static zend_always_inline zend_ulong zend_inline_hash_func(const char *str, size
((chunk >> (8 * 7)) & 0xff);
# else
hash =
hash * 33 * 33 * 33 * 33 +
str[0] * 33 * 33 * 33 +
str[1] * 33 * 33 +
str[2] * 33 +
hash * Z_L(33 * 33 * 33 * 33) +
str[0] * Z_L(33 * 33 * 33) +
str[1] * Z_L(33 * 33) +
str[2] * Z_L(33) +
str[3];
hash =
hash * 33 * 33 * 33 * 33 +
str[4] * 33 * 33 * 33 +
str[5] * 33 * 33 +
str[6] * 33 +
hash * Z_L(33 * 33 * 33 * 33) +
str[4] * Z_L(33 * 33 * 33) +
str[5] * Z_L(33 * 33) +
str[6] * Z_L(33) +
str[7];
# endif
}
if (len >= 4) {
hash =
hash * 33 * 33 * 33 * 33 +
str[0] * 33 * 33 * 33 +
str[1] * 33 * 33 +
str[2] * 33 +
hash * Z_L(33 * 33 * 33 * 33) +
str[0] * Z_L(33 * 33 * 33) +
str[1] * Z_L(33 * 33) +
str[2] * Z_L(33) +
str[3];
len -= 4;
str += 4;
@@ -455,18 +455,18 @@ static zend_always_inline zend_ulong zend_inline_hash_func(const char *str, size
if (len >= 2) {
if (len > 2) {
hash =
hash * 33 * 33 * 33 +
str[0] * 33 * 33 +
str[1] * 33 +
hash * Z_L(33 * 33 * 33) +
str[0] * Z_L(33 * 33) +
str[1] * Z_L(33) +
str[2];
} else {
hash =
hash * 33 * 33 +
str[0] * 33 +
hash * Z_L(33 * 33) +
str[0] * Z_L(33) +
str[1];
}
} else if (len != 0) {
hash = hash * 33 + *str;
hash = hash * Z_L(33) + *str;
}
#else
/* variant with the hash unrolled eight times */