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Inlined and specialised hash table look-up

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This improves performance in several ways.  Separate functions are
used depending on whether the caller has a hash value computed or not.

* src/fns.c (hash_lookup_with_hash, hash_lookup_get_hash): New.
(hash_lookup): Remove hash return argument.
All callers adapted.

hash_lookup_with_hash hash_hash_t arg
This commit is contained in:
Mattias Engdegård 2023-11-21 12:27:42 +01:00
parent a3ae5653cf
commit 3b00255a4c
15 changed files with 66 additions and 46 deletions
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4
src/lisp.h
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@ -4063,7 +4063,9 @@ EMACS_UINT sxhash (Lisp_Object);
Lisp_Object make_hash_table (struct hash_table_test, EMACS_INT,
hash_table_weakness_t, bool);
Lisp_Object hash_table_weakness_symbol (hash_table_weakness_t weak);
ptrdiff_t hash_lookup (struct Lisp_Hash_Table *, Lisp_Object, hash_hash_t *);
ptrdiff_t hash_lookup (struct Lisp_Hash_Table *, Lisp_Object);
ptrdiff_t hash_lookup_get_hash (struct Lisp_Hash_Table *h, Lisp_Object key,
hash_hash_t *phash);
ptrdiff_t hash_put (struct Lisp_Hash_Table *, Lisp_Object, Lisp_Object,
hash_hash_t);
void hash_remove_from_table (struct Lisp_Hash_Table *, Lisp_Object);