Remove Reloc::Mode CODE_TARGET_CONTEXT

test/mjsunit/context-calls-maintained.js

+// 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: --expose-gc --allow-natives-syntax
+
+function dispose_context() {

[Toon Verwaest, 2013/12/04 18:10:52]

Maybe call this "clear_all_ics()" ?

[mvstanton, 2013/12/04 22:08:10]

Done.

+  %NotifyContextDisposed();
+  gc();
+  gc();
+  gc();
+}
+
+
+// Test: verify that a monomorphic call retains the structural knowledge
+// of a global call, correctly throwing either ReferenceError or
+// TypeError on undefined depending on how the call is made.
+(function() {
+  foo = function(arg) { return arg + 1; }
+
+  function f() { foo(1); }
+
+  // Drive to monomorphic
+  f(); f(); f();
+
+  delete foo;
+  assertThrows(function() { f(); }, ReferenceError);
+  foo = function(arg) { return arg * 2; }
+  assertDoesNotThrow(function() { f(); });
+  f(); f(); f();
+  delete foo;
+  assertThrows(function() { f(); }, ReferenceError);
+  dispose_context();
+  foo = function(arg) { return arg * 3; }
+  f();
+  %OptimizeFunctionOnNextCall(f);
+  f();
+  delete foo;
+  assertThrows(function() { f(); }, ReferenceError);
+
+  foo = function(arg) { return arg * 3; }
+  function g() { this.foo(1); }
+  g(); g(); g();
+  delete foo;
+  assertThrows(function() { g(); }, TypeError);
+  foo = function(arg) { return arg * 3; }
+  g();
+  %OptimizeFunctionOnNextCall(g);
+  g();
+  delete foo;
+  assertThrows(function() { g(); }, TypeError);
+})();
+
+
+// Test: verify that a load with IC does the right thing.
+(function() {
+  var foo = function() { return a; }
+  a = 3;
+  foo(); foo(); foo();
+  delete a;
+  assertThrows(function() { foo(); }, ReferenceError);
+  a = "hi";
+  foo();
+  dispose_context();
+  foo();
+  %OptimizeFunctionOnNextCall(foo);
+  foo();
+  delete a;
+  assertThrows(function() { foo(); }, ReferenceError);
+  foo = function() { return this.a; }
+  assertDoesNotThrow(function() { foo(); });
+})();
+
+
+// Test: verify that a store with IC does the right thing.
+// If store is contextual and strict mode is set, throw a ReferenceError
+// if the variable isn't found.
+(function() {
+  var foo = function() { a = 3; }
+  var bar = function() { "use strict"; a = 3; }
+  foo(); foo(); foo();
+  delete a;
+  assertThrows(function() { bar(); }, ReferenceError);
+  a = 6;
+  foo(); foo(); foo();
+  bar(); bar();
+  dispose_context();
+  bar();
+  %OptimizeFunctionOnNextCall(bar);
+  bar();
+  delete a;
+  assertThrows(function() { bar(); }, ReferenceError);
+})();