1 files changed, 73 insertions, 0 deletions
diff --git a/deps/v8/test/mjsunit/compiler/escape-analysis-representation.js b/deps/v8/test/mjsunit/compiler/escape-analysis-representation.js
new file mode 100644
index 0000000000..8e21a36b40
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+++ b/deps/v8/test/mjsunit/compiler/escape-analysis-representation.js
@@ -0,0 +1,73 @@
+// Copyright 2013 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.
+
+// Flags: --allow-natives-syntax --use-escape-analysis --max-opt-count=100
+
+// This tests that captured objects materialized through the deoptimizer
+// have field descriptors with a representation matching the values that
+// have actually been stored in the object.
+
+var values = [ function() { return {}; },
+               function() { return 23; },
+               function() { return 4.2; } ];
+
+function constructor(value_track) {
+  this.x = value_track();
+}
+
+function access(value_track, value_break, deopt) {
+  var o = new constructor(value_track);
+  o.x = value_break;
+  deopt.deopt
+  assertEquals(value_break, o.x);
+}
+
+function test(value_track, value_break) {
+  var deopt = { deopt:false };
+
+  // Warm-up field tracking to a certain representation.
+  access(value_track, value_track(), deopt);
+  access(value_track, value_track(), deopt);
+  %OptimizeFunctionOnNextCall(access);
+  access(value_track, value_track(), deopt);
+
+  // Deoptimize on a run with a different representation.
+  delete deopt.deopt;
+  access(value_track, value_break(), deopt);
+
+  // Clear type feedback of the access function for next run.
+  %ClearFunctionTypeFeedback(access);
+
+  // Also make sure the initial map of the constructor is reset.
+  constructor.prototype = {};
+}
+
+for (var i = 0; i < values.length; i++) {
+  for (var j = 0; j < values.length; j++) {
+    test(values[i], values[j])
+  }
+}