gas: use notes_calloc in string hash

gas: use notes_calloc in string hash

[Alan Modra]

Using notes_calloc means all of the string hash table memory should
now be freed before gas exits, even though htab_delete isn't called.
This also means that the hash table free_f and del_f must be NULL,
because freeing notes obstack memory results in all more recently
allocated notes memory being freed too.  So hash table resizing won't
free any memory, and will be a little faster.  Also, htab_delete won't
do anything (and be quick about it).

Since htab_traverse can also resize hash tables (to make another
traversal faster if the table is largely empty), stop that happening
when only one traversal is done.

	* as.h: Reorder hash.h after symbols.h for notes_calloc decl.
	* hash.h (str_htab_create): Use notes_calloc.  Do not free.
	* symbols.c (resolve_local_symbol_values): Don't resize
	during hash table traversal.
	* config/obj-elf.c (elf_frob_file_after_relocs): Likewise.
	* config/tc-ia64.c (ia64_adjust_symtab, ia64_frob_file): Likewise.
	* config/tc-nds32.c (nds32_elf_analysis_relax_hint): Likewise.

diff --git a/gas/as.h b/gas/as.h
index d179537f383..ff665c75812 100644
--- a/gas/as.h
+++ b/gas/as.h
@@ -541,10 +541,10 @@ int generic_force_reloc (struct fix *);
 
 #include "write.h"
 #include "frags.h"
-#include "hashtab.h"
-#include "hash.h"
 #include "read.h"
 #include "symbols.h"
+#include "hashtab.h"
+#include "hash.h"
 
 #include "tc.h"
 #include "obj.h"
diff --git a/gas/config/obj-elf.c b/gas/config/obj-elf.c
index e5ab8514de7..82cde271fbb 100644
--- a/gas/config/obj-elf.c
+++ b/gas/config/obj-elf.c
@@ -3006,7 +3006,7 @@ elf_frob_file_after_relocs (void)
     }
 
   /* Cleanup hash.  */
-  htab_traverse (groups.indexes, free_section_idx, NULL);
+  htab_traverse_noresize (groups.indexes, free_section_idx, NULL);
   htab_delete (groups.indexes);
 
 #ifdef NEED_ECOFF_DEBUG
diff --git a/gas/config/tc-ia64.c b/gas/config/tc-ia64.c
index 7fa7e572a22..3011302ffba 100644
--- a/gas/config/tc-ia64.c
+++ b/gas/config/tc-ia64.c
@@ -11853,7 +11853,7 @@ do_alias (void **slot, void *arg ATTRIBUTE_UNUSED)
 void
 ia64_adjust_symtab (void)
 {
-  htab_traverse (alias_hash, do_alias, NULL);
+  htab_traverse_noresize (alias_hash, do_alias, NULL);
 }
 
 /* It renames the original section name to its alias.  */
@@ -11878,7 +11878,7 @@ do_secalias (void **slot, void *arg ATTRIBUTE_UNUSED)
 void
 ia64_frob_file (void)
 {
-  htab_traverse (secalias_hash, do_secalias, NULL);
+  htab_traverse_noresize (secalias_hash, do_secalias, NULL);
 }
 
 #ifdef TE_VMS
diff --git a/gas/config/tc-nds32.c b/gas/config/tc-nds32.c
index 48893a5762e..6b082a3a26c 100644
--- a/gas/config/tc-nds32.c
+++ b/gas/config/tc-nds32.c
@@ -7480,7 +7480,8 @@ nds32_insert_relax_entry (bfd *abfd ATTRIBUTE_UNUSED, asection *sec,
 static void
 nds32_elf_analysis_relax_hint (void)
 {
-  htab_traverse (nds32_hint_hash, nds32_elf_append_relax_relocs_traverse, NULL);
+  htab_traverse_noresize (nds32_hint_hash,
+			  nds32_elf_append_relax_relocs_traverse, NULL);
 }
 
 static void
diff --git a/gas/hash.h b/gas/hash.h
index 29e882514f4..30404d88928 100644
--- a/gas/hash.h
+++ b/gas/hash.h
@@ -99,7 +99,7 @@ static inline htab_t
 str_htab_create (void)
 {
   return htab_create_alloc (16, hash_string_tuple, eq_string_tuple,
-			    free, xcalloc, free);
+			    NULL, notes_calloc, NULL);
 }
 
 #endif /* HASH_H */
diff --git a/gas/symbols.c b/gas/symbols.c
index 744f6e1260f..6904a3102cf 100644
--- a/gas/symbols.c
+++ b/gas/symbols.c
@@ -1786,7 +1786,7 @@ resolve_local_symbol (void **slot, void *arg ATTRIBUTE_UNUSED)
 void
 resolve_local_symbol_values (void)
 {
-  htab_traverse (sy_hash, resolve_local_symbol, NULL);
+  htab_traverse_noresize (sy_hash, resolve_local_symbol, NULL);
 }
 
 /* Obtain the current value of a symbol without changing any

-- 
Alan Modra
Australia Development Lab, IBM