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Unified Diff: test/mjsunit/setters-on-elements.js

Issue 35413006: Correct handling of arrays with callbacks in the prototype chain. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Bugfix: check on dictionary elements was incorrect. Added test. Re-enabled test. Created 7 years, 1 month ago
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Index: test/mjsunit/setters-on-elements.js
diff --git a/test/mjsunit/setters-on-elements.js b/test/mjsunit/setters-on-elements.js
new file mode 100644
index 0000000000000000000000000000000000000000..dd3fabf3090c4452b2aa40e20e1e9fe269a41868
--- /dev/null
+++ b/test/mjsunit/setters-on-elements.js
@@ -0,0 +1,199 @@
+// 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.
+
+// Flags: --allow-natives-syntax --max-opt-count=100 --noalways-opt
+
+// We specify max-opt-count because we opt/deopt the same function many
+// times.
+
+// It's nice to run this in other browsers too.
+var standalone = false;
+if (standalone) {
+ assertTrue = function(val) {
+ if (val != true) {
+ print("FAILURE");
+ }
+ }
+
+ assertFalse = function(val) {
+ if (val != false) {
+ print("FAILURE");
+ }
+ }
+
+ assertEquals = function(expected, val) {
+ if (expected !== val) {
+ print("FAILURE");
+ }
+ }
+
+ empty_func = function(name) { }
+ assertUnoptimized = empty_func;
+ assertOptimized = empty_func;
+
+ optimize = empty_func;
+ clearFunctionTypeFeedback = empty_func;
+ deoptimizeFunction = empty_func;
+} else {
+ optimize = function(name) {
+ %OptimizeFunctionOnNextCall(name);
+ }
+ clearFunctionTypeFeedback = function(name) {
+ %ClearFunctionTypeFeedback(name);
+ }
+ deoptimizeFunction = function(name) {
+ %DeoptimizeFunction(name);
+ }
+}
+
+function base_setter_test(create_func, index, store_value) {
+ var calls = 0;
+
+ // Testcase: setter in prototype chain
+ foo = function(a) { a[index] = store_value; }
+ var a = create_func();
+ var ap = [];
+ ap.__defineSetter__(index, function() { calls++; });
+
+ foo(a);
+ foo(a);
+ foo(a);
+ delete a[index];
+
+ assertEquals(0, calls);
+ a.__proto__ = ap;
+ foo(a);
+ assertEquals(1, calls);
+ optimize(foo);
+ foo(a);
+ assertEquals(2, calls);
+ assertOptimized(foo);
+
+ // Testcase: setter added on prototype chain object already in place.
+ clearFunctionTypeFeedback(foo);
+ deoptimizeFunction(foo);
+ clearFunctionTypeFeedback(foo);
+ calls = 0;
+ a = create_func();
+ var apap = [];
+ a.__proto__ = apap;
+ foo(a);
+ foo(a);
+ foo(a);
+ delete a[index];
+ apap.__defineSetter__(index, function() { calls++; });
+ foo(a);
+ foo(a);
+ foo(a);
+ assertEquals(3, calls);
+
+ // Testcase: setter "deep" in prototype chain.
+ clearFunctionTypeFeedback(foo);
+ deoptimizeFunction(foo);
+ clearFunctionTypeFeedback(foo);
+ calls = 0;
+
+ a = create_func();
+ var ap2 = [];
+ a.__proto__ = ap2;
+ foo(a);
+ foo(a);
+ foo(a);
+ delete a[index];
+
+ assertEquals(0, calls);
+
+ ap2.__proto__ = ap; // "sneak" in a callback.
+ // The sneak case should be caught by unoptimized code too.
+ assertUnoptimized(foo);
+ foo(a);
+ foo(a);
+ foo(a);
+ assertEquals(3, calls);
+
+ // Testcase: setter added after optimization (feedback is monomorphic)
+ clearFunctionTypeFeedback(foo);
+ deoptimizeFunction(foo);
+ clearFunctionTypeFeedback(foo);
+ calls = 0;
+
+ a = create_func();
+ ap2 = [];
+ a.__proto__ = ap2;
+ foo(a);
+ foo(a);
+ foo(a);
+ optimize(foo);
+ foo(a);
+ assertOptimized(foo);
+ delete a[index];
+ ap2.__proto__ = ap;
+ foo(a);
+ assertUnoptimized(foo); // map shape change should deopt foo.
+ assertEquals(1, calls);
+
+ // Testcase: adding additional setters to a prototype chain that already has
+ // one shouldn't deopt anything. (ie, we aren't changing the map shape).
+ clearFunctionTypeFeedback(foo);
+ calls = 0;
+
+ a = create_func();
+ a.__proto__ = ap2;
+ bar = function(a) { a[index+1] = store_value; }
+ bar(a);
+ bar(a);
+ bar(a); // store should be generic
+ optimize(bar);
+ bar(a);
+ assertOptimized(bar);
+ assertEquals(0, calls);
+ delete a[index+1];
+ ap2.__defineSetter__(index+1, function() { calls++; });
+ bar(a);
+ assertOptimized(bar);
+ assertEquals(1, calls);
+}
+
+// Verify that map transitions don't confuse us.
+create_func_smi = function() { return [,,,,,,5]; }
+create_func_double = function() { return [0,,3.2,,,,5.5]; }
+create_func_fast = function() { return [,,,,,,true]; }
+create_func_dictionary = function() { var a = []; a.length = 100000; return a; }
+
+var cf = [create_func_smi,
+ create_func_double,
+ create_func_fast,
+ create_func_dictionary];
+
+var values = [3, 3.5, true];
+
+for(var c = 0; c < 3; c++) {
+ for(var s = 0; s < 3; s++) {
+ base_setter_test(cf[c], 0, values[s]);
+ base_setter_test(cf[c], 1, values[s]);
+ }
+}
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