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diff graal/com.oracle.truffle.api/src/com/oracle/truffle/api/CompilerDirectives.java @ 11495:3662471dcfaa

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Introduce CompilerDirectives.ValueType annotation in Truffle API.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Sun, 01 Sep 2013 19:39:06 +0200
parents 760e838b3560
children 992508ee13b6
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--- a/graal/com.oracle.truffle.api/src/com/oracle/truffle/api/CompilerDirectives.java	Sat Aug 31 09:18:58 2013 +0200
+++ b/graal/com.oracle.truffle.api/src/com/oracle/truffle/api/CompilerDirectives.java	Sun Sep 01 19:39:06 2013 +0200
@@ -205,4 +205,13 @@
     @Target({ElementType.METHOD})
     public @interface SlowPath {
     }
+
+    /**
+     * Marks classes as value types. Reference comparisons (==) between instances of those classes
+     * have undefined semantics and can either return true or false.
+     */
+    @Retention(RetentionPolicy.RUNTIME)
+    @Target({ElementType.TYPE})
+    public @interface ValueType {
+    }
 }