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, 15 insertions, 4 deletions

diff --git a/insns.def b/insns.def
index f7716bfe15..48d1275b35 100644
--- a/insns.def
+++ b/insns.def
@@ -1237,10 +1237,7 @@ opt_case_dispatch
 (..., VALUE key)
 () // inc += -1;
 {
-    if (0) {
-	/* TODO: if some === method is overrided */
-    }
-    else {
+    if (BASIC_OP_UNREDEFINED_P(BOP_EQQ)) {
 	VALUE val;
 	if (st_lookup(RHASH_TBL(hash), key, &val)) {
 	    JUMP(FIX2INT(val));
@@ -1249,6 +1246,20 @@ opt_case_dispatch
 	    JUMP(else_offset);
 	}
     }
+    else {
+	struct opt_case_dispatch_i_arg arg = {
+	    key, -1
+	};
+
+	st_foreach(RHASH_TBL(hash), opt_case_dispatch_i, &arg);
+
+	if (arg.label != -1) {
+	    JUMP(arg.label);
+	}
+	else {
+	    JUMP(else_offset);
+	}
+    }
 }
 
 /**