reduce overhead of TYPE

* array.c (ary_join_1): reduce overhead of TYPE().

* eval.c (rb_frozen_class_p, rb_mod_{append,prepend}_features): ditto.

* string.c (rb_to_id): ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40105 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 7 insertions, 13 deletions

diff --git a/string.c b/string.c
index 8bbd8a4c41..8b85739e70 100644
--- a/string.c
+++ b/string.c
@@ -8152,24 +8152,18 @@ rb_to_id(VALUE name)
 {
     VALUE tmp;
 
-    switch (TYPE(name)) {
-      default:
+    if (SYMBOL_P(name)) {
+	return SYM2ID(name);
+    }
+    if (!RB_TYPE_P(name, T_STRING)) {
 	tmp = rb_check_string_type(name);
 	if (NIL_P(tmp)) {
-	    tmp = rb_inspect(name);
-	    rb_raise(rb_eTypeError, "%s is not a symbol",
-		     RSTRING_PTR(tmp));
+	    rb_raise(rb_eTypeError, "%+"PRIsVALUE" is not a symbol",
+		     name);
 	}
 	name = tmp;
-	/* fall through */
-      case T_STRING:
-	name = rb_str_intern(name);
-	/* fall through */
-      case T_SYMBOL:
-	return SYM2ID(name);
     }
-
-    UNREACHABLE;
+    return rb_intern_str(name);
 }
 
 /*