nobu	2017-10-02 21:23:17 +0900 (Mon, 02 Oct 2017)

  New Revision: 60101

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=60101

  Log:
    use rb_hash_new_with_size()

  Modified files:
    trunk/compile.c
    trunk/gc.c
    trunk/re.c
Index: gc.c
===================================================================
--- gc.c	(revision 60100)
+++ gc.c	(revision 60101)
@@ -6735,7 +6735,7 @@ static const char *type_name(int type, V https://github.com/ruby/ruby/blob/trunk/gc.c#L6735
 static void
 gc_count_add_each_types(VALUE hash, const char *name, const size_t *types)
 {
-    VALUE result = rb_hash_new();
+    VALUE result = rb_hash_new_with_size(T_MASK);
     int i;
     for (i=0; i<T_MASK; i++) {
 	const char *type = type_name(i, 0);
Index: compile.c
===================================================================
--- compile.c	(revision 60100)
+++ compile.c	(revision 60101)
@@ -7203,7 +7203,7 @@ iseq_build_from_ary_body(rb_iseq_t *iseq https://github.com/ruby/ruby/blob/trunk/compile.c#L7203
 		      case TS_CDHASH:
 			{
 			    int i;
-			    VALUE map = rb_hash_new();
+			    VALUE map = rb_hash_new_with_size(RARRAY_LEN(op)/2);
 
 			    rb_hash_tbl_raw(map)->type = &cdhash_type;
 			    op = rb_convert_type_with_id(op, T_ARRAY, "Array", idTo_ary);
@@ -8525,7 +8525,7 @@ static VALUE https://github.com/ruby/ruby/blob/trunk/compile.c#L8525
 ibf_load_object_hash(const struct ibf_load *load, const struct ibf_object_header *header, ibf_offset_t offset)
 {
     const struct ibf_object_hash *hash = IBF_OBJBODY(struct ibf_object_hash, offset);
-    VALUE obj = rb_hash_new();
+    VALUE obj = rb_hash_new_with_size(hash->len);
     int i;
 
     for (i=0; i<hash->len; i++) {
Index: re.c
===================================================================
--- re.c	(revision 60100)
+++ re.c	(revision 60101)
@@ -820,9 +820,9 @@ reg_named_captures_iter(const OnigUChar https://github.com/ruby/ruby/blob/trunk/re.c#L820
 static VALUE
 rb_reg_named_captures(VALUE re)
 {
-    VALUE hash = rb_hash_new();
-    rb_reg_check(re);
-    onig_foreach_name(RREGEXP_PTR(re), reg_named_captures_iter, (void*)hash);
+    regex_t *reg = (rb_reg_check(re), RREGEXP_PTR(re));
+    VALUE hash = rb_hash_new_with_size(onig_number_of_names(reg));
+    onig_foreach_name(reg, reg_named_captures_iter, (void*)hash);
     return hash;
 }
 

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