Implement proposed new identity spec.

runtime/vm/code_generator.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/code_generator.h"
 
 #include "vm/assembler_macros.h"
 #include "vm/ast.h"
+#include "vm/bigint_operations.h"
 #include "vm/code_patcher.h"
 #include "vm/compiler.h"
 #include "vm/dart_api_impl.h"
 #include "vm/dart_entry.h"
 #include "vm/debugger.h"
 #include "vm/deopt_instructions.h"
 #include "vm/exceptions.h"
 #include "vm/intermediate_language.h"
 #include "vm/object_store.h"
 #include "vm/message.h"
@@ skipping 1882 matching lines @@
     const intptr_t token_pos = code.GetTokenIndexOfPC(top_frame->pc());
     intptr_t line, column;
     script.GetTokenLocation(token_pos, &line, &column);
     String& line_string = String::Handle(script.GetLine(line));
     OS::Print("  Function: %s\n", top_function.ToFullyQualifiedCString());
     OS::Print("  Line %"Pd": '%s'\n", line, line_string.ToCString());
   }
 }
 
 
+DEFINE_LEAF_RUNTIME_ENTRY(intptr_t,
+                          BigintCompare,
+                          RawBigint* left,
+                          RawBigint* right) {
+  Isolate* isolate = Isolate::Current();
+  StackZone zone(isolate);
+  HANDLESCOPE(isolate);
+  const Bigint& big_left = Bigint::Handle(left);
+  const Bigint& big_right = Bigint::Handle(right);
+  return BigintOperations::Compare(big_left, big_right);
+}
+END_LEAF_RUNTIME_ENTRY
+
 }  // namespace dart