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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/167272">167272</a></dd>
<dt>Author</dt> <dd>oliver@apple.com</dd>
<dt>Date</dt> <dd>2014-04-14 15:05:44 -0700 (Mon, 14 Apr 2014)</dd>
</dl>
<h3>Log Message</h3>
<pre>Function.bind itself is too slow
https://bugs.webkit.org/show_bug.cgi?id=131636
Reviewed by Geoffrey Garen.
Source/JavaScriptCore:
Rather than forcing creation of an activation, we now store
bound function properties directly on the returned closure.
This is necessary to deal with code that creates many function
bindings, but does not call them very often.
This is a 60% speed up in the included js/regress test.
* builtins/BuiltinExecutables.cpp:
(JSC::BuiltinExecutables::createBuiltinExecutable):
* builtins/Function.prototype.js:
(bind.bindingFunction):
(bind.else.switch.case.1.bindingFunction.bindingFunction.bindingFunction.boundOversizedCallThunk):
(bind.else.switch.case.1.bindingFunction):
(bind.else.switch.case.2.bindingFunction.bindingFunction.bindingFunction.boundOversizedCallThunk):
(bind.else.switch.case.2.bindingFunction):
(bind.else.switch.case.3.bindingFunction.bindingFunction.bindingFunction.boundOversizedCallThunk):
(bind.else.switch.case.3.bindingFunction):
(bind.else.switch.bindingFunction):
(bind):
(bind.else.switch.case.1.bindingFunction.oversizedCall): Deleted.
(bind.else.switch.case.2.bindingFunction.oversizedCall): Deleted.
(bind.else.switch.case.3.bindingFunction.oversizedCall): Deleted.
* runtime/CommonIdentifiers.h:
LayoutTests:
New test, and fix bogus log in old one
* js/regress/function-bind-create-expected.html: Added.
* js/regress/function-bind-create.html: Added.
* js/regress/script-tests/function-bind-create.js: Added.
(test):
* js/regress/script-tests/function-bind.js:</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkLayoutTestsChangeLog">trunk/LayoutTests/ChangeLog</a></li>
<li><a href="#trunkLayoutTestsjsregressscripttestsfunctionbindjs">trunk/LayoutTests/js/regress/script-tests/function-bind.js</a></li>
<li><a href="#trunkSourceJavaScriptCoreChangeLog">trunk/Source/JavaScriptCore/ChangeLog</a></li>
<li><a href="#trunkSourceJavaScriptCorebuiltinsFunctionprototypejs">trunk/Source/JavaScriptCore/builtins/Function.prototype.js</a></li>
<li><a href="#trunkSourceJavaScriptCoreruntimeCommonIdentifiersh">trunk/Source/JavaScriptCore/runtime/CommonIdentifiers.h</a></li>
</ul>
<h3>Added Paths</h3>
<ul>
<li><a href="#trunkLayoutTestsjsregressfunctionbindcreateexpectedhtml">trunk/LayoutTests/js/regress/function-bind-create-expected.html</a></li>
<li><a href="#trunkLayoutTestsjsregressfunctionbindcreatehtml">trunk/LayoutTests/js/regress/function-bind-create.html</a></li>
<li><a href="#trunkLayoutTestsjsregressscripttestsfunctionbindcreatejs">trunk/LayoutTests/js/regress/script-tests/function-bind-create.js</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkLayoutTestsChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/ChangeLog (167271 => 167272)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/ChangeLog 2014-04-14 21:51:17 UTC (rev 167271)
+++ trunk/LayoutTests/ChangeLog 2014-04-14 22:05:44 UTC (rev 167272)
</span><span class="lines">@@ -1,3 +1,18 @@
</span><ins>+2014-04-14 Oliver Hunt <oliver@apple.com>
+
+ Function.bind itself is too slow
+ https://bugs.webkit.org/show_bug.cgi?id=131636
+
+ Reviewed by Geoffrey Garen.
+
+ New test, and fix bogus log in old one
+
+ * js/regress/function-bind-create-expected.html: Added.
+ * js/regress/function-bind-create.html: Added.
+ * js/regress/script-tests/function-bind-create.js: Added.
+ (test):
+ * js/regress/script-tests/function-bind.js:
+
</ins><span class="cx"> 2014-04-14 Brian J. Burg <burg@cs.washington.edu>
</span><span class="cx">
</span><span class="cx"> Web Replay: memoize fallback time values for document.lastModified
</span></span></pre></div>
<a id="trunkLayoutTestsjsregressfunctionbindcreateexpectedhtml"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/js/regress/function-bind-create-expected.html (0 => 167272)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/js/regress/function-bind-create-expected.html (rev 0)
+++ trunk/LayoutTests/js/regress/function-bind-create-expected.html 2014-04-14 22:05:44 UTC (rev 167272)
</span><span class="lines">@@ -0,0 +1,10 @@
</span><ins>+JSRegress/function-bind
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+PASS no exception thrown
+PASS successfullyParsed is true
+
+TEST COMPLETE
+
</ins></span></pre></div>
<a id="trunkLayoutTestsjsregressfunctionbindcreatehtml"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/js/regress/function-bind-create.html (0 => 167272)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/js/regress/function-bind-create.html (rev 0)
+++ trunk/LayoutTests/js/regress/function-bind-create.html 2014-04-14 22:05:44 UTC (rev 167272)
</span><span class="lines">@@ -0,0 +1,12 @@
</span><ins>+<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
+<html>
+<head>
+<script src="../../resources/js-test-pre.js"></script>
+</head>
+<body>
+<script src="../../resources/regress-pre.js"></script>
+<script src="script-tests/function-bind.js"></script>
+<script src="../../resources/regress-post.js"></script>
+<script src="../../resources/js-test-post.js"></script>
+</body>
+</html>
</ins></span></pre></div>
<a id="trunkLayoutTestsjsregressscripttestsfunctionbindcreatejs"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/js/regress/script-tests/function-bind-create.js (0 => 167272)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/js/regress/script-tests/function-bind-create.js (rev 0)
+++ trunk/LayoutTests/js/regress/script-tests/function-bind-create.js 2014-04-14 22:05:44 UTC (rev 167272)
</span><span class="lines">@@ -0,0 +1,8 @@
</span><ins>+var count = 0;
+function test() { return result ^ (count += 3); }
+var result = 0;
+for (var i = 0; i < 100000; i++)
+ result = result ^ (i * test.bind(1,2)()) + 1;
+
+if (result != 509992157)
+ throw "Bad result: " + result;
</ins></span></pre></div>
<a id="trunkLayoutTestsjsregressscripttestsfunctionbindjs"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/js/regress/script-tests/function-bind.js (167271 => 167272)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/js/regress/script-tests/function-bind.js 2014-04-14 21:51:17 UTC (rev 167271)
+++ trunk/LayoutTests/js/regress/script-tests/function-bind.js 2014-04-14 22:05:44 UTC (rev 167272)
</span><span class="lines">@@ -6,7 +6,6 @@
</span><span class="cx"> var g1 = foo.bind({}, 1);
</span><span class="cx"> var g2 = foo.bind({}, 1, 2);
</span><span class="cx"> var g3 = foo.bind({}, 1, 2, 3);
</span><del>-var start = new Date;
</del><span class="cx">
</span><span class="cx"> var result = 0;
</span><span class="cx"> for (var i = 0; i < 100000; ++i) {
</span><span class="lines">@@ -23,6 +22,5 @@
</span><span class="cx"> result += g3(i, result);
</span><span class="cx"> result |= 0;
</span><span class="cx"> }
</span><del>-print((new Date - start))
</del><span class="cx"> if (result != 1596499010)
</span><span class="cx"> throw "Bad result: " + result;
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/ChangeLog (167271 => 167272)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/ChangeLog 2014-04-14 21:51:17 UTC (rev 167271)
+++ trunk/Source/JavaScriptCore/ChangeLog 2014-04-14 22:05:44 UTC (rev 167272)
</span><span class="lines">@@ -1,3 +1,34 @@
</span><ins>+2014-04-14 Oliver Hunt <oliver@apple.com>
+
+ Function.bind itself is too slow
+ https://bugs.webkit.org/show_bug.cgi?id=131636
+
+ Reviewed by Geoffrey Garen.
+
+ Rather than forcing creation of an activation, we now store
+ bound function properties directly on the returned closure.
+ This is necessary to deal with code that creates many function
+ bindings, but does not call them very often.
+
+ This is a 60% speed up in the included js/regress test.
+
+ * builtins/BuiltinExecutables.cpp:
+ (JSC::BuiltinExecutables::createBuiltinExecutable):
+ * builtins/Function.prototype.js:
+ (bind.bindingFunction):
+ (bind.else.switch.case.1.bindingFunction.bindingFunction.bindingFunction.boundOversizedCallThunk):
+ (bind.else.switch.case.1.bindingFunction):
+ (bind.else.switch.case.2.bindingFunction.bindingFunction.bindingFunction.boundOversizedCallThunk):
+ (bind.else.switch.case.2.bindingFunction):
+ (bind.else.switch.case.3.bindingFunction.bindingFunction.bindingFunction.boundOversizedCallThunk):
+ (bind.else.switch.case.3.bindingFunction):
+ (bind.else.switch.bindingFunction):
+ (bind):
+ (bind.else.switch.case.1.bindingFunction.oversizedCall): Deleted.
+ (bind.else.switch.case.2.bindingFunction.oversizedCall): Deleted.
+ (bind.else.switch.case.3.bindingFunction.oversizedCall): Deleted.
+ * runtime/CommonIdentifiers.h:
+
</ins><span class="cx"> 2014-04-14 Julien Brianceau <jbriance@cisco.com>
</span><span class="cx">
</span><span class="cx"> [sh4] Allow use of SubImmediates in LLINT.
</span></span></pre></div>
<a id="trunkSourceJavaScriptCorebuiltinsFunctionprototypejs"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/builtins/Function.prototype.js (167271 => 167272)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/builtins/Function.prototype.js 2014-04-14 21:51:17 UTC (rev 167271)
+++ trunk/Source/JavaScriptCore/builtins/Function.prototype.js 2014-04-14 22:05:44 UTC (rev 167272)
</span><span class="lines">@@ -40,9 +40,10 @@
</span><span class="cx"> if (typeof boundFunction !== "function")
</span><span class="cx"> throw new @TypeError("Cannot bind non-function object.");
</span><span class="cx"> var bindingFunction;
</span><del>- var oversizedCall = undefined;
</del><span class="cx"> if (arguments.length <= 1) {
</span><del>- bindingFunction = function () {
</del><ins>+ bindingFunction = function bindingFunction() {
+ var thisValue = bindingFunction.@boundThisValue;
+ var boundFunction = bindingFunction.@boundFunction;
</ins><span class="cx"> if (@IsConstructor)
</span><span class="cx"> return new boundFunction(...arguments);
</span><span class="cx"> return boundFunction.@apply(thisValue, arguments);
</span><span class="lines">@@ -51,8 +52,10 @@
</span><span class="cx"> var length = arguments.length;
</span><span class="cx"> switch (length - 1 /* skip thisValue */) {
</span><span class="cx"> case 1: {
</span><del>- var boundParameter = arguments[1];
- bindingFunction = function () {
</del><ins>+ bindingFunction = function bindingFunction() {
+ var thisValue = bindingFunction.@boundThisValue;
+ var boundFunction = bindingFunction.@boundFunction;
+ var boundParameter = bindingFunction.@boundParameter;
</ins><span class="cx"> var argumentLength = arguments.length;
</span><span class="cx"> if (!argumentLength) {
</span><span class="cx"> if (@IsConstructor)
</span><span class="lines">@@ -75,21 +78,24 @@
</span><span class="cx"> return boundFunction.@call(thisValue, boundParameter, arguments[0], arguments[1], arguments[2]);
</span><span class="cx"> }
</span><span class="cx"> var completeArguments = [boundParameter, ...arguments];
</span><del>- if (!oversizedCall) {
- oversizedCall = function (isConstruct, boundFunction, thisValue, completeArguments) {
</del><ins>+ if (!bindingFunction.@boundOversizedCallThunk) {
+ bindingFunction.@boundOversizedCallThunk = function (isConstruct, boundFunction, thisValue, completeArguments) {
</ins><span class="cx"> if (isConstruct)
</span><span class="cx"> return new boundFunction(...completeArguments);
</span><span class="cx"> return boundFunction.@apply(thisValue, completeArguments);
</span><span class="cx"> }
</span><span class="cx"> }
</span><del>- return oversizedCall(@IsConstructor, boundFunction, thisValue, completeArguments);
</del><ins>+ return bindingFunction.@boundOversizedCallThunk(@IsConstructor, boundFunction, thisValue, completeArguments);
</ins><span class="cx"> }
</span><ins>+ bindingFunction.@boundParameter = arguments[1];
</ins><span class="cx"> break;
</span><span class="cx"> }
</span><span class="cx"> case 2: {
</span><del>- var boundParameter1 = arguments[1];
- var boundParameter2 = arguments[2];
- bindingFunction = function () {
</del><ins>+ bindingFunction = function bindingFunction() {
+ var thisValue = bindingFunction.@boundThisValue;
+ var boundFunction = bindingFunction.@boundFunction;
+ var boundParameter1 = bindingFunction.@boundParameter1;
+ var boundParameter2 = bindingFunction.@boundParameter2;
</ins><span class="cx"> if (!arguments.length) {
</span><span class="cx"> if (@IsConstructor)
</span><span class="cx"> return new boundFunction(boundParameter1, boundParameter2);
</span><span class="lines">@@ -111,22 +117,26 @@
</span><span class="cx"> return boundFunction.@call(thisValue, boundParameter1, boundParameter2, arguments[0], arguments[1], arguments[2]);
</span><span class="cx"> }
</span><span class="cx"> var completeArguments = [boundParameter1, boundParameter2, ...arguments];
</span><del>- if (!oversizedCall) {
- oversizedCall = function (isConstruct, boundFunction, thisValue, completeArguments) {
</del><ins>+ if (!bindingFunction.@boundOversizedCallThunk) {
+ bindingFunction.@boundOversizedCallThunk = function (isConstruct, boundFunction, thisValue, completeArguments) {
</ins><span class="cx"> if (isConstruct)
</span><span class="cx"> return new boundFunction(...completeArguments);
</span><span class="cx"> return boundFunction.@apply(thisValue, completeArguments);
</span><span class="cx"> }
</span><span class="cx"> }
</span><del>- return oversizedCall(@IsConstructor, boundFunction, thisValue, completeArguments);
</del><ins>+ return bindingFunction.@boundOversizedCallThunk(@IsConstructor, boundFunction, thisValue, completeArguments);
</ins><span class="cx"> }
</span><ins>+ bindingFunction.@boundParameter1 = arguments[1];
+ bindingFunction.@boundParameter2 = arguments[2];
</ins><span class="cx"> break;
</span><span class="cx"> }
</span><span class="cx"> case 3: {
</span><del>- var boundParameter1 = arguments[1];
- var boundParameter2 = arguments[2];
- var boundParameter3 = arguments[3];
- bindingFunction = function () {
</del><ins>+ bindingFunction = function bindingFunction() {
+ var thisValue = bindingFunction.@boundThisValue;
+ var boundFunction = bindingFunction.@boundFunction;
+ var boundParameter1 = bindingFunction.@boundParameter1;
+ var boundParameter2 = bindingFunction.@boundParameter2;
+ var boundParameter3 = bindingFunction.@boundParameter3;
</ins><span class="cx"> if (!arguments.length) {
</span><span class="cx"> if (@IsConstructor)
</span><span class="cx"> return new boundFunction(boundParameter1, boundParameter2, boundParameter3);
</span><span class="lines">@@ -148,15 +158,18 @@
</span><span class="cx"> return boundFunction.@call(thisValue, boundParameter1, boundParameter2, boundParameter3, arguments[0], arguments[1], arguments[2]);
</span><span class="cx"> }
</span><span class="cx"> var completeArguments = [boundParameter1, boundParameter2, boundParameter3, ...arguments];
</span><del>- if (!oversizedCall) {
- oversizedCall = function (isConstruct, boundFunction, thisValue, completeArguments) {
</del><ins>+ if (!bindingFunction.@boundOversizedCallThunk) {
+ bindingFunction.@boundOversizedCallThunk = function (isConstruct, boundFunction, thisValue, completeArguments) {
</ins><span class="cx"> if (isConstruct)
</span><span class="cx"> return new boundFunction(...completeArguments);
</span><span class="cx"> return boundFunction.@apply(thisValue, completeArguments);
</span><span class="cx"> }
</span><span class="cx"> }
</span><del>- return oversizedCall(@IsConstructor, boundFunction, thisValue, completeArguments);
</del><ins>+ return bindingFunction.@boundOversizedCallThunk(@IsConstructor, boundFunction, thisValue, completeArguments);
</ins><span class="cx"> }
</span><ins>+ bindingFunction.@boundParameter1 = arguments[1];
+ bindingFunction.@boundParameter2 = arguments[2];
+ bindingFunction.@boundParameter3 = arguments[3];
</ins><span class="cx"> break;
</span><span class="cx"> }
</span><span class="cx"> default:
</span><span class="lines">@@ -164,18 +177,20 @@
</span><span class="cx"> for (var i = 1; i < length; i++)
</span><span class="cx"> boundParameters[i - 1] = arguments[i];
</span><span class="cx">
</span><del>- bindingFunction = function () {
</del><ins>+ bindingFunction = function bindingFunction() {
+ var thisValue = bindingFunction.@boundThisValue;
+ var boundFunction = bindingFunction.@boundFunction;
+ var boundParameters = bindingFunction.@boundParameters;
</ins><span class="cx"> if (!arguments.length) {
</span><span class="cx"> if (@IsConstructor)
</span><del>- return new boundFunction(...boundParameters);
</del><ins>+ return new boundFunction(...@boundParameters);
</ins><span class="cx"> return boundFunction.@apply(thisValue, boundParameters);
</span><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> var completeArguments = [];
</span><del>- var localBoundParameters = boundParameters;
- var boundLength = localBoundParameters.length;
</del><ins>+ var boundLength = boundParameters.length;
</ins><span class="cx"> for (var i = 0; i < boundLength; i++)
</span><del>- completeArguments[i] = localBoundParameters[i];
</del><ins>+ completeArguments[i] = boundParameters[i];
</ins><span class="cx"> for (var i = 0; i < arguments.length; i++)
</span><span class="cx"> completeArguments[i + boundLength] = arguments[i];
</span><span class="cx"> if (@IsConstructor)
</span><span class="lines">@@ -183,8 +198,10 @@
</span><span class="cx"> else
</span><span class="cx"> return boundFunction.@apply(thisValue, completeArguments);
</span><span class="cx"> }
</span><ins>+ bindingFunction.@boundParameters = boundParameters;
</ins><span class="cx"> }
</span><span class="cx"> }
</span><ins>+ bindingFunction.@boundThisValue = thisValue;
</ins><span class="cx"> bindingFunction.@boundFunctionName = this.name;
</span><span class="cx"> bindingFunction.@boundFunction = boundFunction.@boundFunction || boundFunction;
</span><span class="cx"> var boundLength = boundFunction.length - (arguments.length - 1);
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoreruntimeCommonIdentifiersh"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/runtime/CommonIdentifiers.h (167271 => 167272)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/runtime/CommonIdentifiers.h 2014-04-14 21:51:17 UTC (rev 167271)
+++ trunk/Source/JavaScriptCore/runtime/CommonIdentifiers.h 2014-04-14 22:05:44 UTC (rev 167272)
</span><span class="lines">@@ -223,6 +223,13 @@
</span><span class="cx"> macro(IsConstructor) \
</span><span class="cx"> macro(boundFunctionName) \
</span><span class="cx"> macro(boundFunctionParameters) \
</span><ins>+ macro(boundThisValue) \
+ macro(boundParameter) \
+ macro(boundParameter1) \
+ macro(boundParameter2) \
+ macro(boundParameter3) \
+ macro(boundParameters) \
+ macro(boundOversizedCallThunk) \
</ins><span class="cx"> macro(boundFunction) \
</span><span class="cx"> macro(boundFunctionLength) \
</span><span class="cx"> macro(prototypeForHasInstance) \
</span></span></pre>
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