Perform HasFastProperties check on prototypes when computing call targets in Crankshaft.

BUG=125148
TEST=mjsunit/regress/regress-crbug-125148

Review URL: https://chromiumcodereview.appspot.com/10735054

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12043 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/ast.cc

@@ -528,6 +528,7 @@ bool Call::ComputeTarget(Handle<Map> type, Handle<String> name) {
     if (!type->prototype()->IsJSObject()) return false;
     // Go up the prototype chain, recording where we are currently.
     holder_ = Handle<JSObject>(JSObject::cast(type->prototype()));
+    if (!holder_->HasFastProperties()) return false;
     type = Handle<Map>(holder()->map());
   }
 }

test/mjsunit/regress/regress-crbug-125148.js

+// Copyright 2012 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.
+
+var A = {
+  foo: function() { assertUnreachable(); }
+}
+
+var B = {
+  b: 2,
+  foo: function() { return 1; }
+}
+B.__proto__ = A;
+
+var C = {};
+C.__proto__ = B;
+
+function bar(x) {
+  return x.foo();
+}
+
+for (var i = 0; i < 3; i++) {
+  assertEquals(1, bar(C));
+}
+%OptimizeObjectForAddingMultipleProperties(B, 100);  // Force dictionary mode.
+%OptimizeFunctionOnNextCall(bar);
+assertEquals(1, bar(C));