Rehash hash tables eagerly after loading a dump

This simplifies code, and helps performance in some cases (Bug#36597).
* src/lisp.h (hash_rehash_needed_p): Remove.  All uses removed.
(hash_rehash_if_needed): Remove.  All uses removed.
(struct Lisp_Hash_Table): Remove comment about rehashing hash tables.
* src/pdumper.c (thaw_hash_tables): New function.
(hash_table_thaw): New function.
(hash_table_freeze): New function.
(dump_hash_table): Simplify.
(dump_hash_table_list): New function.
(hash_table_contents): New function.
(Fdump_emacs_portable): Handle hash tables by eager rehashing.
(pdumper_load): Restore hash tables.
(init_pdumper_once): New function.

1 files changed, 0 insertions, 1 deletions

diff --git a/src/bytecode.c b/src/bytecode.c
index 1913a4812a0..1c3b6eac0d1 100644
--- a/src/bytecode.c
+++ b/src/bytecode.c
@@ -1401,7 +1401,6 @@ exec_byte_code (Lisp_Object bytestr, Lisp_Object vector, Lisp_Object maxdepth,
             Lisp_Object v1 = POP;
             ptrdiff_t i;
             struct Lisp_Hash_Table *h = XHASH_TABLE (jmp_table);
-            hash_rehash_if_needed (h);
 
             /* h->count is a faster approximation for HASH_TABLE_SIZE (h)
                here. */