Version 3.0.7

src/lithium.h

-// Copyright 2010 the V8 project authors. All rights reserved.
+// Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
 //       with the distribution.
 //     * Neither the name of Google Inc. nor the names of its
 //       contributors may be used to endorse or promote products derived
 //       from this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// See: http://code.google.com/p/v8/issues/detail?id=1015
+#ifndef V8_LITHIUM_H_
+#define V8_LITHIUM_H_
 
-// Object and array literals should be created using DefineOwnProperty, and
-// therefore not hit setters in the prototype.
+#include "lithium-allocator.h"
 
-function mkFail(message) {
-  return function () { assertUnreachable(message); }
-}
+namespace v8 {
+namespace internal {
 
-Object.defineProperty(Object.prototype, "foo",
-                      {get: mkFail("oget"), set: mkFail("oset")});
-Object.defineProperty(Array.prototype, "2",
-                      {get: mkFail("aget"), set: mkFail("aset")});
+class LGapNode;
 
-function inFunction() {
-  for (var i = 0; i < 10; i++) {
-    // in loop.
-    var ja = JSON.parse('[1,2,3,4]');
-    var jo = JSON.parse('{"bar": 10, "foo": 20}')
-    var jop = JSON.parse('{"bar": 10, "__proto__": { }, "foo": 20}')
-    var a = [1,2,3,4];
-    var o = { bar: 10, foo: 20 };
-    var op = { __proto__: { set bar(v) { assertUnreachable("bset"); } },
-               bar: 10 };
-  }
-}
+class LGapResolver BASE_EMBEDDED {
+ public:
+  LGapResolver(const ZoneList<LMoveOperands>* moves, LOperand* marker_operand);
+  const ZoneList<LMoveOperands>* ResolveInReverseOrder();
 
-for (var i = 0; i < 10; i++) {
-  // In global scope.
-  var ja = JSON.parse('[1,2,3,4]');
-  var jo = JSON.parse('{"bar": 10, "foo": 20}')
-  var jop = JSON.parse('{"bar": 10, "__proto__": { }, "foo": 20}')
-  var a = [1,2,3,4];
-  var o = { bar: 10, foo: 20 };
-  var op = { __proto__: { set bar(v) { assertUnreachable("bset"); } },
-             bar: 10 };
-  // In function scope.
-  inFunction();
-}
+ private:
+  LGapNode* LookupNode(LOperand* operand);
+  bool CanReach(LGapNode* a, LGapNode* b, int visited_id);
+  bool CanReach(LGapNode* a, LGapNode* b);
+  void RegisterMove(LMoveOperands move);
+  void AddResultMove(LOperand* from, LOperand* to);
+  void AddResultMove(LGapNode* from, LGapNode* to);
+  void ResolveCycle(LGapNode* start);
+
+  ZoneList<LGapNode*> nodes_;
+  ZoneList<LGapNode*> identified_cycles_;
+  ZoneList<LMoveOperands> result_;
+  LOperand* marker_operand_;
+  int next_visited_id_;
+  int bailout_after_ast_id_;
+};
+
+
+} }  // namespace v8::internal
+
+#endif  // V8_LITHIUM_H_