merges r24511 from trunk into ruby_1_9_1.

--
* insns.def, vm.c, vm_insnhelper.c, vm_insnhelper.h: check
  definition of (classes)#=== for case/when optimization.
  Fix Bug #1376 [ruby-core:23190].
* string.c (Init_String), bignum.c (Init_Bignum),
  numeric.c (Init_Numeric): define String#===, Symbol#===,
  Bignum#===, Fixnum#===, Float#=== as same as (classes)#==.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_1@25478 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 18 insertions, 0 deletions

diff --git a/vm_insnhelper.c b/vm_insnhelper.c
index 8a1306ab9e..2a48dba4ad 100644
--- a/vm_insnhelper.c
+++ b/vm_insnhelper.c
@@ -1536,3 +1536,21 @@ opt_eq_func(VALUE recv, VALUE obj, IC ic)
 
     return val;
 }
+
+struct opt_case_dispatch_i_arg {
+    VALUE obj;
+    int label;
+};
+
+static int
+opt_case_dispatch_i(st_data_t key, st_data_t data, struct opt_case_dispatch_i_arg *arg)
+{
+    if (RTEST(rb_funcall((VALUE)key, idEqq, 1, arg->obj))) {
+	arg->label = FIX2INT((VALUE)data);
+	return ST_STOP;
+    }
+    else {
+	return ST_CONTINUE;
+    }
+}
+