archive/php-src
1
0
Fork 0
mirror of https://github.com/php/php-src.git synced 2025-08-15 21:48:51 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions 3

Fix performance degradation introduced in c2547ab7dc

Browse source 
After discussing with someone, our current running theory is that the local
variable forces the compiler to reserve an additional register for the whole
lifespan of the function. Dropping it and just loading the value should restore
the previous code generation.

Closes GH-9876
This commit is contained in:
George Peter Banyard 2022-11-02 14:04:43 +00:00
parent 6e87485d3c
commit 86456574bb
No known key found for this signature in database
GPG key ID: 3306078E3194AEBD
1 changed files with 3 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

7
Zend/zend_hash.c
View file

@ -658,15 +658,14 @@ ZEND_API void ZEND_FASTCALL zend_hash_iterators_advance(HashTable *ht, HashPosit
/* Hash must be known and precomputed before */
static zend_always_inline Bucket *zend_hash_find_bucket(const HashTable *ht, const zend_string *key)
{
zend_ulong key_hash = ZSTR_H(key);
uint32_t nIndex;
uint32_t idx;
Bucket *p, *arData;
ZEND_ASSERT(key_hash != 0 && "Hash must be known");
ZEND_ASSERT(ZSTR_H(key) != 0 && "Hash must be known");
arData = ht->arData;
nIndex = key_hash | ht->nTableMask;
nIndex = ZSTR_H(key) | ht->nTableMask;
idx = HT_HASH_EX(arData, nIndex);
if (UNEXPECTED(idx == HT_INVALID_IDX)) {
@ -678,7 +677,7 @@ static zend_always_inline Bucket *zend_hash_find_bucket(const HashTable *ht, con
}
while (1) {
if (p->h == key_hash &&
if (p->h == ZSTR_H(key) &&
EXPECTED(p->key) &&
zend_string_equal_content(p->key, key)) {
return p;