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<div id="msg">
<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/213088">213088</a></dd>
<dt>Author</dt> <dd>commit-queue@webkit.org</dd>
<dt>Date</dt> <dd>2017-02-27 13:08:38 -0800 (Mon, 27 Feb 2017)</dd>
</dl>

<h3>Log Message</h3>
<pre>Unreviewed, rolling out <a href="http://trac.webkit.org/projects/webkit/changeset/213019">r213019</a>.
https://bugs.webkit.org/show_bug.cgi?id=168925

&quot;It broke 32-bit jsc tests in debug builds&quot; (Requested by
saamyjoon on #webkit).

Reverted changeset:

&quot;op_get_by_id_with_this should use inline caching&quot;
https://bugs.webkit.org/show_bug.cgi?id=162124
http://trac.webkit.org/changeset/213019</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkJSTestsChangeLog">trunk/JSTests/ChangeLog</a></li>
<li><a href="#trunkSourceJavaScriptCoreChangeLog">trunk/Source/JavaScriptCore/ChangeLog</a></li>
<li><a href="#trunkSourceJavaScriptCorebytecodeAccessCasecpp">trunk/Source/JavaScriptCore/bytecode/AccessCase.cpp</a></li>
<li><a href="#trunkSourceJavaScriptCorebytecodePolymorphicAccesscpp">trunk/Source/JavaScriptCore/bytecode/PolymorphicAccess.cpp</a></li>
<li><a href="#trunkSourceJavaScriptCorebytecodePolymorphicAccessh">trunk/Source/JavaScriptCore/bytecode/PolymorphicAccess.h</a></li>
<li><a href="#trunkSourceJavaScriptCorebytecodeStructureStubInfocpp">trunk/Source/JavaScriptCore/bytecode/StructureStubInfo.cpp</a></li>
<li><a href="#trunkSourceJavaScriptCorebytecodeStructureStubInfoh">trunk/Source/JavaScriptCore/bytecode/StructureStubInfo.h</a></li>
<li><a href="#trunkSourceJavaScriptCoredfgDFGFixupPhasecpp">trunk/Source/JavaScriptCore/dfg/DFGFixupPhase.cpp</a></li>
<li><a href="#trunkSourceJavaScriptCoredfgDFGJITCompilercpp">trunk/Source/JavaScriptCore/dfg/DFGJITCompiler.cpp</a></li>
<li><a href="#trunkSourceJavaScriptCoredfgDFGJITCompilerh">trunk/Source/JavaScriptCore/dfg/DFGJITCompiler.h</a></li>
<li><a href="#trunkSourceJavaScriptCoredfgDFGSpeculativeJITcpp">trunk/Source/JavaScriptCore/dfg/DFGSpeculativeJIT.cpp</a></li>
<li><a href="#trunkSourceJavaScriptCoredfgDFGSpeculativeJITh">trunk/Source/JavaScriptCore/dfg/DFGSpeculativeJIT.h</a></li>
<li><a href="#trunkSourceJavaScriptCoredfgDFGSpeculativeJIT32_64cpp">trunk/Source/JavaScriptCore/dfg/DFGSpeculativeJIT32_64.cpp</a></li>
<li><a href="#trunkSourceJavaScriptCoredfgDFGSpeculativeJIT64cpp">trunk/Source/JavaScriptCore/dfg/DFGSpeculativeJIT64.cpp</a></li>
<li><a href="#trunkSourceJavaScriptCoreftlFTLLowerDFGToB3cpp">trunk/Source/JavaScriptCore/ftl/FTLLowerDFGToB3.cpp</a></li>
<li><a href="#trunkSourceJavaScriptCorejitCCallHelpersh">trunk/Source/JavaScriptCore/jit/CCallHelpers.h</a></li>
<li><a href="#trunkSourceJavaScriptCorejitICStatsh">trunk/Source/JavaScriptCore/jit/ICStats.h</a></li>
<li><a href="#trunkSourceJavaScriptCorejitJITcpp">trunk/Source/JavaScriptCore/jit/JIT.cpp</a></li>
<li><a href="#trunkSourceJavaScriptCorejitJITh">trunk/Source/JavaScriptCore/jit/JIT.h</a></li>
<li><a href="#trunkSourceJavaScriptCorejitJITInlineCacheGeneratorcpp">trunk/Source/JavaScriptCore/jit/JITInlineCacheGenerator.cpp</a></li>
<li><a href="#trunkSourceJavaScriptCorejitJITInlineCacheGeneratorh">trunk/Source/JavaScriptCore/jit/JITInlineCacheGenerator.h</a></li>
<li><a href="#trunkSourceJavaScriptCorejitJITInlinesh">trunk/Source/JavaScriptCore/jit/JITInlines.h</a></li>
<li><a href="#trunkSourceJavaScriptCorejitJITOperationscpp">trunk/Source/JavaScriptCore/jit/JITOperations.cpp</a></li>
<li><a href="#trunkSourceJavaScriptCorejitJITOperationsh">trunk/Source/JavaScriptCore/jit/JITOperations.h</a></li>
<li><a href="#trunkSourceJavaScriptCorejitJITPropertyAccesscpp">trunk/Source/JavaScriptCore/jit/JITPropertyAccess.cpp</a></li>
<li><a href="#trunkSourceJavaScriptCorejitJITPropertyAccess32_64cpp">trunk/Source/JavaScriptCore/jit/JITPropertyAccess32_64.cpp</a></li>
<li><a href="#trunkSourceJavaScriptCorejitRepatchcpp">trunk/Source/JavaScriptCore/jit/Repatch.cpp</a></li>
<li><a href="#trunkSourceJavaScriptCorejitRepatchh">trunk/Source/JavaScriptCore/jit/Repatch.h</a></li>
<li><a href="#trunkSourceJavaScriptCorejsccpp">trunk/Source/JavaScriptCore/jsc.cpp</a></li>
</ul>

<h3>Removed Paths</h3>
<ul>
<li><a href="#trunkJSTestsmicrobenchmarkssupergetterjs">trunk/JSTests/microbenchmarks/super-getter.js</a></li>
<li><a href="#trunkJSTestsstresssuperforceicfailjs">trunk/JSTests/stress/super-force-ic-fail.js</a></li>
<li><a href="#trunkJSTestsstresssupergetbyidjs">trunk/JSTests/stress/super-get-by-id.js</a></li>
<li><a href="#trunkJSTestsstresssupergetterreseticjs">trunk/JSTests/stress/super-getter-reset-ic.js</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkJSTestsChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/JSTests/ChangeLog (213087 => 213088)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/JSTests/ChangeLog        2017-02-27 20:51:43 UTC (rev 213087)
+++ trunk/JSTests/ChangeLog        2017-02-27 21:08:38 UTC (rev 213088)
</span><span class="lines">@@ -1,3 +1,17 @@
</span><ins>+2017-02-27  Commit Queue  &lt;commit-queue@webkit.org&gt;
+
+        Unreviewed, rolling out r213019.
+        https://bugs.webkit.org/show_bug.cgi?id=168925
+
+        &quot;It broke 32-bit jsc tests in debug builds&quot; (Requested by
+        saamyjoon on #webkit).
+
+        Reverted changeset:
+
+        &quot;op_get_by_id_with_this should use inline caching&quot;
+        https://bugs.webkit.org/show_bug.cgi?id=162124
+        http://trac.webkit.org/changeset/213019
+
</ins><span class="cx"> 2017-02-27  JF Bastien  &lt;jfbastien@apple.com&gt;
</span><span class="cx"> 
</span><span class="cx">         WebAssembly: miscellaneous spec fixes part deux
</span></span></pre></div>
<a id="trunkJSTestsmicrobenchmarkssupergetterjs"></a>
<div class="delfile"><h4>Deleted: trunk/JSTests/microbenchmarks/super-getter.js (213087 => 213088)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/JSTests/microbenchmarks/super-getter.js        2017-02-27 20:51:43 UTC (rev 213087)
+++ trunk/JSTests/microbenchmarks/super-getter.js        2017-02-27 21:08:38 UTC (rev 213088)
</span><span class="lines">@@ -1,24 +0,0 @@
</span><del>-class A {
-    get f() {
-        return this._f;
-    }
-}
-
-class B extends A {
-    get f() {
-        return super.f;
-    }
-}
-
-(function() {
-    var o = new B();
-
-    o._f = 42;
-    var result = 0;
-    var n = 2000000;
-    for (var i = 0; i &lt; n; ++i)
-        result += o.f;
-    if (result != n * 42)
-        throw &quot;Error: bad result: &quot; + result;
-})();
-
</del></span></pre></div>
<a id="trunkJSTestsstresssuperforceicfailjs"></a>
<div class="delfile"><h4>Deleted: trunk/JSTests/stress/super-force-ic-fail.js (213087 => 213088)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/JSTests/stress/super-force-ic-fail.js        2017-02-27 20:51:43 UTC (rev 213087)
+++ trunk/JSTests/stress/super-force-ic-fail.js        2017-02-27 21:08:38 UTC (rev 213088)
</span><span class="lines">@@ -1,56 +0,0 @@
</span><del>-let assert = (a) =&gt; {
-    if (!a)
-        throw Error(&quot;Bad Assertion&quot;);
-}
-
-let aObj =  {
-    get foo() { return this.a; }
-};
-
-let obj = {
-    jaz() {
-        return super.foo;
-    }
-};
-obj.a = &quot;foo&quot;;
-
-Object.setPrototypeOf(obj, aObj);
-
-noInline(obj.jaz);
-
-for (let i = 0; i &lt; 10000; i++) {
-    if (i == 9999) {
-        delete aObj.foo;
-        assert(obj.jaz() === undefined);
-    } else {
-        assert(obj.jaz() == &quot;foo&quot;);
-    }
-
-}
-
-let bObj =  {
-    get foo() { return this.a; }
-};
-
-let obj2 = {
-    foo() {
-        return super.foo;
-    }
-};
-obj2.a = &quot;foo&quot;;
-
-Object.setPrototypeOf(obj2, bObj);
-
-noInline(obj.jaz);
-
-for (let i = 0; i &lt; 10000; i++) {
-    if (i == 9999) {
-        Object.defineProperty(bObj, &quot;foo&quot;, {
-            get: () =&gt; {return &quot;boo&quot;; }
-        });
-        assert(obj2.foo() == &quot;boo&quot;);
-    } else {
-        assert(obj2.foo() == &quot;foo&quot;);
-    }
-}
-
</del></span></pre></div>
<a id="trunkJSTestsstresssupergetbyidjs"></a>
<div class="delfile"><h4>Deleted: trunk/JSTests/stress/super-get-by-id.js (213087 => 213088)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/JSTests/stress/super-get-by-id.js        2017-02-27 20:51:43 UTC (rev 213087)
+++ trunk/JSTests/stress/super-get-by-id.js        2017-02-27 21:08:38 UTC (rev 213088)
</span><span class="lines">@@ -1,203 +0,0 @@
</span><del>-&quot;use strict&quot;;
-
-function assert(a) {
-    if (!a)
-        throw new Error(&quot;Bad!&quot;);
-}
-
-var Base = class Base {
-    constructor() { this._name = &quot;Name&quot;; }
-    get name() { return this._name; } // If this instead returns a static: return &quot;Foo&quot; things somewhat work.
-    set name(x) { this._name = x; }
-};
-
-var Subclass = class Subclass extends Base {
-    get name() { return super.name; }
-};
-
-function getterName(instance) {
-    return instance.name;
-}
-
-noInline(getterName);
-
-function getterValue(instance) {
-    return instance.value;
-}
-
-noInline(getterValue);
-
-// Base case
-var instance = new Subclass;
-for (let i = 0; i &lt; 10000;i++)
-  assert(getterName(instance) == &quot;Name&quot;);
-
-// Polymorphic case
-
-class PolymorphicSubclass {
-    get value() { return super.value; }
-};
-
-let numPolymorphicClasses = 4;
-let subclasses = new Array(numPolymorphicClasses);
-for (let i = 0; i &lt; numPolymorphicClasses; i++) {
-    let BaseCode = `
-       class Base${i} {
-            get value() { return this._value; }
-        };
-    `;
-
-    let Base = eval(BaseCode);
-    subclasses[i] = new PolymorphicSubclass();
-    subclasses[i]._value = i;
-
-    Object.setPrototypeOf(subclasses[i], Base.prototype);
-}
-
-for (let i = 0; i &lt; 1000000; i++) {
-    let index = i % numPolymorphicClasses;
-    let value = getterValue(subclasses[index]);
-    assert(value == index);
-}
-
-// Megamorphic case
-
-let nClasses = 1000;
-class MegamorphicSubclass {
-    get value() { return super.value; }
-};
-
-subclasses = new Array(nClasses);
-for (let i = 0; i &lt; nClasses; i++) {
-    let BaseCode = `
-       class Base${i + 4} {
-            get value() { return this._value; }
-        };
-    `;
-
-    let Base = eval(BaseCode);
-    subclasses[i] = new MegamorphicSubclass();
-    subclasses[i]._value = i;
-
-    Object.setPrototypeOf(subclasses[i], Base.prototype);
-}
-
-for (let i = 0; i &lt; 1000000; i++) {
-    let index = i % nClasses;
-    let value = getterValue(subclasses[index]);
-    assert(value == index);
-}
-
-// CustomGetter case
-
-let customGetter = createCustomGetterObject();
-Object.setPrototypeOf(customGetter, Object.prototype);
-
-let subObj = {
-    __proto__: customGetter,
-    get value () {
-        return super.customGetterAccessor;
-    }
-}
-
-for (let i = 0; i &lt; 1000000; i++) {
-    let value = getterValue(subObj);
-    assert(value == 100);
-}
-
-subObj.shouldThrow = true;
-for (let i = 0; i &lt; 1000000; i++) {
-    try {
-        getterValue(subObj);
-        assert(false);
-    } catch(e) {
-        assert(e instanceof TypeError);
-    };
-}
-
-// CustomValue case
-
-customGetter = createCustomGetterObject();
-Object.setPrototypeOf(customGetter, Object.prototype);
-
-subObj = {
-    __proto__: customGetter,
-    get value () {
-        return super.customGetter;
-    }
-}
-
-for (let i = 0; i &lt; 1000000; i++) {
-    let value = getterValue(subObj);
-    assert(value == 100);
-}
-
-subObj.shouldThrow = true;
-for (let i = 0; i &lt; 1000000; i++) {
-    let value = getterValue(subObj);
-    assert(value == 100);
-}
-
-// Exception handling case
-
-class BaseException {
-    constructor() { this._name = &quot;Name&quot;; }
-    get name() {
-        if (this.shouldThrow)
-            throw new Error(&quot;Forced Exception&quot;);
-        return this._name;
-    }
-};
-
-class SubclassException extends BaseException {
-    get name() { return super.name; }
-};
-
-let eObj = new SubclassException;
-for (let i = 0; i &lt; 10000;i++)
-  assert(getterName(eObj) == &quot;Name&quot;);
-
-eObj.shouldThrow = true;
-for (let i = 0; i &lt; 1000000; i++) {
-    try {
-        getterValue(eObj);
-        assert(false);
-    } catch(e) {
-        eObj.shouldThrow = false;
-        assert(getterName(eObj) == &quot;Name&quot;);
-    };
-}
-
-// In getter exception handling
-
-class BaseExceptionComplex {
-    constructor() { this._name = &quot;Name&quot;; }
-    foo () {
-        if (this.shouldThrow)
-            throw new Error(&quot;Forced Exception&quot;);
-    }
-    get name() {
-        this.foo();
-        return this._name;
-    }
-};
-
-class SubclassExceptionComplex extends BaseExceptionComplex {
-    get name() {
-        try {
-            return super.name;
-        } catch(e) {
-            this.shouldThrow = false;
-            return super.name;
-        }
-    }
-};
-
-eObj = new SubclassExceptionComplex;
-for (let i = 0; i &lt; 10000;i++)
-  assert(getterName(eObj) == &quot;Name&quot;);
-
-eObj.shouldThrow = true;
-for (let i = 0; i &lt; 1000000; i++)
-    assert(getterName(eObj) == &quot;Name&quot;);
-
</del></span></pre></div>
<a id="trunkJSTestsstresssupergetterreseticjs"></a>
<div class="delfile"><h4>Deleted: trunk/JSTests/stress/super-getter-reset-ic.js (213087 => 213088)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/JSTests/stress/super-getter-reset-ic.js        2017-02-27 20:51:43 UTC (rev 213087)
+++ trunk/JSTests/stress/super-getter-reset-ic.js        2017-02-27 21:08:38 UTC (rev 213088)
</span><span class="lines">@@ -1,33 +0,0 @@
</span><del>-let assert = (a) =&gt; {
-    if (!a)
-        throw &quot;Bad!&quot;;
-}
-
-let n = 200;
-
-let A =  {
-    c: 42
-}
-
-let C = {
-    __proto__: A
-}
-
-let B = {
-    __proto__: C,
-    f(i) {
-        return super.c;
-    }
-}
-
-var result = 0;
-for (var i = 0; i &lt; n; ++i) {
-    if (i == n / 2 ) {
-        // This operation is going to force op_get_by_id_with_this to be regenerated 
-        Object.defineProperty(A, &quot;c&quot;, {get: () =&gt; 12});
-    }
-    result += B.f(i);
-}
-
-assert(result, 5400);
-
</del></span></pre></div>
<a id="trunkSourceJavaScriptCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/ChangeLog (213087 => 213088)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/ChangeLog        2017-02-27 20:51:43 UTC (rev 213087)
+++ trunk/Source/JavaScriptCore/ChangeLog        2017-02-27 21:08:38 UTC (rev 213088)
</span><span class="lines">@@ -1,3 +1,17 @@
</span><ins>+2017-02-27  Commit Queue  &lt;commit-queue@webkit.org&gt;
+
+        Unreviewed, rolling out r213019.
+        https://bugs.webkit.org/show_bug.cgi?id=168925
+
+        &quot;It broke 32-bit jsc tests in debug builds&quot; (Requested by
+        saamyjoon on #webkit).
+
+        Reverted changeset:
+
+        &quot;op_get_by_id_with_this should use inline caching&quot;
+        https://bugs.webkit.org/show_bug.cgi?id=162124
+        http://trac.webkit.org/changeset/213019
+
</ins><span class="cx"> 2017-02-27  JF Bastien  &lt;jfbastien@apple.com&gt;
</span><span class="cx"> 
</span><span class="cx">         WebAssembly: miscellaneous spec fixes part deux
</span></span></pre></div>
<a id="trunkSourceJavaScriptCorebytecodeAccessCasecpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/bytecode/AccessCase.cpp (213087 => 213088)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/bytecode/AccessCase.cpp        2017-02-27 20:51:43 UTC (rev 213087)
+++ trunk/Source/JavaScriptCore/bytecode/AccessCase.cpp        2017-02-27 21:08:38 UTC (rev 213088)
</span><span class="lines">@@ -418,7 +418,6 @@
</span><span class="cx">     const Identifier&amp; ident = *state.ident;
</span><span class="cx">     JSValueRegs valueRegs = state.valueRegs;
</span><span class="cx">     GPRReg baseGPR = state.baseGPR;
</span><del>-    GPRReg thisGPR = state.thisGPR != InvalidGPRReg ? state.thisGPR : baseGPR;
</del><span class="cx">     GPRReg scratchGPR = state.scratchGPR;
</span><span class="cx"> 
</span><span class="cx">     ASSERT(m_conditionSet.structuresEnsureValidityAssumingImpurePropertyWatchpoint());
</span><span class="lines">@@ -666,7 +665,7 @@
</span><span class="cx">                 loadedValueGPR, calleeFrame.withOffset(CallFrameSlot::callee * sizeof(Register)));
</span><span class="cx"> 
</span><span class="cx">             jit.storeCell(
</span><del>-                thisGPR,
</del><ins>+                baseGPR,
</ins><span class="cx">                 calleeFrame.withOffset(virtualRegisterForArgument(0).offset() * sizeof(Register)));
</span><span class="cx"> 
</span><span class="cx">             if (m_type == Setter) {
</span><span class="lines">@@ -726,31 +725,28 @@
</span><span class="cx">             // to make some space here.
</span><span class="cx">             jit.makeSpaceOnStackForCCall();
</span><span class="cx"> 
</span><del>-            // Check if it is a super access
-            GPRReg baseForCustomGetGPR = baseGPR != thisGPR ? thisGPR : baseForGetGPR;
-
</del><span class="cx">             // getter: EncodedJSValue (*GetValueFunc)(ExecState*, EncodedJSValue thisValue, PropertyName);
</span><span class="cx">             // setter: void (*PutValueFunc)(ExecState*, EncodedJSValue thisObject, EncodedJSValue value);
</span><span class="cx">             // Custom values are passed the slotBase (the property holder), custom accessors are passed the thisVaule (reciever).
</span><span class="cx">             // FIXME: Remove this differences in custom values and custom accessors.
</span><span class="cx">             // https://bugs.webkit.org/show_bug.cgi?id=158014
</span><del>-            GPRReg baseForCustom = m_type == CustomValueGetter || m_type == CustomValueSetter ? baseForAccessGPR : baseForCustomGetGPR; 
</del><ins>+            GPRReg baseForCustomValue = m_type == CustomValueGetter || m_type == CustomValueSetter ? baseForAccessGPR : baseForGetGPR;
</ins><span class="cx"> #if USE(JSVALUE64)
</span><span class="cx">             if (m_type == CustomValueGetter || m_type == CustomAccessorGetter) {
</span><span class="cx">                 jit.setupArgumentsWithExecState(
</span><del>-                    baseForCustom,
</del><ins>+                    baseForCustomValue,
</ins><span class="cx">                     CCallHelpers::TrustedImmPtr(ident.impl()));
</span><span class="cx">             } else
</span><del>-                jit.setupArgumentsWithExecState(baseForCustom, valueRegs.gpr());
</del><ins>+                jit.setupArgumentsWithExecState(baseForCustomValue, valueRegs.gpr());
</ins><span class="cx"> #else
</span><span class="cx">             if (m_type == CustomValueGetter || m_type == CustomAccessorGetter) {
</span><span class="cx">                 jit.setupArgumentsWithExecState(
</span><del>-                    EABI_32BIT_DUMMY_ARG baseForCustom,
</del><ins>+                    EABI_32BIT_DUMMY_ARG baseForCustomValue,
</ins><span class="cx">                     CCallHelpers::TrustedImm32(JSValue::CellTag),
</span><span class="cx">                     CCallHelpers::TrustedImmPtr(ident.impl()));
</span><span class="cx">             } else {
</span><span class="cx">                 jit.setupArgumentsWithExecState(
</span><del>-                    EABI_32BIT_DUMMY_ARG baseForCustom,
</del><ins>+                    EABI_32BIT_DUMMY_ARG baseForCustomValue,
</ins><span class="cx">                     CCallHelpers::TrustedImm32(JSValue::CellTag),
</span><span class="cx">                     valueRegs.payloadGPR(), valueRegs.tagGPR());
</span><span class="cx">             }
</span></span></pre></div>
<a id="trunkSourceJavaScriptCorebytecodePolymorphicAccesscpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/bytecode/PolymorphicAccess.cpp (213087 => 213088)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/bytecode/PolymorphicAccess.cpp        2017-02-27 20:51:43 UTC (rev 213087)
+++ trunk/Source/JavaScriptCore/bytecode/PolymorphicAccess.cpp        2017-02-27 21:08:38 UTC (rev 213088)
</span><span class="lines">@@ -343,14 +343,11 @@
</span><span class="cx">     state.ident = &amp;ident;
</span><span class="cx">     
</span><span class="cx">     state.baseGPR = static_cast&lt;GPRReg&gt;(stubInfo.patch.baseGPR);
</span><del>-    state.thisGPR = static_cast&lt;GPRReg&gt;(stubInfo.patch.thisGPR);
</del><span class="cx">     state.valueRegs = stubInfo.valueRegs();
</span><span class="cx"> 
</span><span class="cx">     ScratchRegisterAllocator allocator(stubInfo.patch.usedRegisters);
</span><span class="cx">     state.allocator = &amp;allocator;
</span><span class="cx">     allocator.lock(state.baseGPR);
</span><del>-    if (state.thisGPR != InvalidGPRReg)
-        allocator.lock(state.thisGPR);
</del><span class="cx">     allocator.lock(state.valueRegs);
</span><span class="cx"> #if USE(JSVALUE32_64)
</span><span class="cx">     allocator.lock(static_cast&lt;GPRReg&gt;(stubInfo.patch.baseTagGPR));
</span></span></pre></div>
<a id="trunkSourceJavaScriptCorebytecodePolymorphicAccessh"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/bytecode/PolymorphicAccess.h (213087 => 213088)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/bytecode/PolymorphicAccess.h        2017-02-27 20:51:43 UTC (rev 213087)
+++ trunk/Source/JavaScriptCore/bytecode/PolymorphicAccess.h        2017-02-27 21:08:38 UTC (rev 213088)
</span><span class="lines">@@ -192,7 +192,6 @@
</span><span class="cx">     MacroAssembler::JumpList failAndRepatch;
</span><span class="cx">     MacroAssembler::JumpList failAndIgnore;
</span><span class="cx">     GPRReg baseGPR { InvalidGPRReg };
</span><del>-    GPRReg thisGPR { InvalidGPRReg };
</del><span class="cx">     JSValueRegs valueRegs;
</span><span class="cx">     GPRReg scratchGPR { InvalidGPRReg };
</span><span class="cx">     const Identifier* ident;
</span></span></pre></div>
<a id="trunkSourceJavaScriptCorebytecodeStructureStubInfocpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/bytecode/StructureStubInfo.cpp (213087 => 213088)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/bytecode/StructureStubInfo.cpp        2017-02-27 20:51:43 UTC (rev 213087)
+++ trunk/Source/JavaScriptCore/bytecode/StructureStubInfo.cpp        2017-02-27 21:08:38 UTC (rev 213088)
</span><span class="lines">@@ -222,9 +222,6 @@
</span><span class="cx">     case AccessType::Get:
</span><span class="cx">         resetGetByID(codeBlock, *this, GetByIDKind::Normal);
</span><span class="cx">         break;
</span><del>-    case AccessType::GetWithThis:
-        resetGetByID(codeBlock, *this, GetByIDKind::WithThis);
-        break;
</del><span class="cx">     case AccessType::Put:
</span><span class="cx">         resetPutByID(codeBlock, *this);
</span><span class="cx">         break;
</span></span></pre></div>
<a id="trunkSourceJavaScriptCorebytecodeStructureStubInfoh"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/bytecode/StructureStubInfo.h (213087 => 213088)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/bytecode/StructureStubInfo.h        2017-02-27 20:51:43 UTC (rev 213087)
+++ trunk/Source/JavaScriptCore/bytecode/StructureStubInfo.h        2017-02-27 21:08:38 UTC (rev 213088)
</span><span class="lines">@@ -47,7 +47,6 @@
</span><span class="cx"> 
</span><span class="cx"> enum class AccessType : int8_t {
</span><span class="cx">     Get,
</span><del>-    GetWithThis,
</del><span class="cx">     TryGet,
</span><span class="cx">     Put,
</span><span class="cx">     In
</span><span class="lines">@@ -178,11 +177,9 @@
</span><span class="cx"> 
</span><span class="cx">         int8_t baseGPR;
</span><span class="cx">         int8_t valueGPR;
</span><del>-        int8_t thisGPR;
</del><span class="cx"> #if USE(JSVALUE32_64)
</span><span class="cx">         int8_t valueTagGPR;
</span><span class="cx">         int8_t baseTagGPR;
</span><del>-        int8_t thisTagGPR;
</del><span class="cx"> #endif
</span><span class="cx">     } patch;
</span><span class="cx"> 
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoredfgDFGFixupPhasecpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/dfg/DFGFixupPhase.cpp (213087 => 213088)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/dfg/DFGFixupPhase.cpp        2017-02-27 20:51:43 UTC (rev 213087)
+++ trunk/Source/JavaScriptCore/dfg/DFGFixupPhase.cpp        2017-02-27 21:08:38 UTC (rev 213088)
</span><span class="lines">@@ -1250,14 +1250,6 @@
</span><span class="cx">                 fixEdge&lt;CellUse&gt;(node-&gt;child1());
</span><span class="cx">             break;
</span><span class="cx">         }
</span><del>-        
-        case GetByIdWithThis: {
-            if (node-&gt;child1()-&gt;shouldSpeculateCell() &amp;&amp; node-&gt;child2()-&gt;shouldSpeculateCell()) {
-                fixEdge&lt;CellUse&gt;(node-&gt;child1());
-                fixEdge&lt;CellUse&gt;(node-&gt;child2());
-            }
-            break;
-        }
</del><span class="cx"> 
</span><span class="cx">         case PutById:
</span><span class="cx">         case PutByIdFlush:
</span><span class="lines">@@ -1885,6 +1877,7 @@
</span><span class="cx">         case ExitOK:
</span><span class="cx">         case BottomValue:
</span><span class="cx">         case TypeOf:
</span><ins>+        case GetByIdWithThis:
</ins><span class="cx">         case PutByIdWithThis:
</span><span class="cx">         case PutByValWithThis:
</span><span class="cx">         case GetByValWithThis:
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoredfgDFGJITCompilercpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/dfg/DFGJITCompiler.cpp (213087 => 213088)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/dfg/DFGJITCompiler.cpp        2017-02-27 20:51:43 UTC (rev 213087)
+++ trunk/Source/JavaScriptCore/dfg/DFGJITCompiler.cpp        2017-02-27 21:08:38 UTC (rev 213088)
</span><span class="lines">@@ -253,8 +253,6 @@
</span><span class="cx"> 
</span><span class="cx">     for (unsigned i = m_getByIds.size(); i--;)
</span><span class="cx">         m_getByIds[i].finalize(linkBuffer);
</span><del>-    for (unsigned i = m_getByIdsWithThis.size(); i--;)
-        m_getByIdsWithThis[i].finalize(linkBuffer);
</del><span class="cx">     for (unsigned i = m_putByIds.size(); i--;)
</span><span class="cx">         m_putByIds[i].finalize(linkBuffer);
</span><span class="cx"> 
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoredfgDFGJITCompilerh"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/dfg/DFGJITCompiler.h (213087 => 213088)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/dfg/DFGJITCompiler.h        2017-02-27 20:51:43 UTC (rev 213087)
+++ trunk/Source/JavaScriptCore/dfg/DFGJITCompiler.h        2017-02-27 21:08:38 UTC (rev 213088)
</span><span class="lines">@@ -197,11 +197,6 @@
</span><span class="cx">         m_getByIds.append(InlineCacheWrapper&lt;JITGetByIdGenerator&gt;(gen, slowPath));
</span><span class="cx">     }
</span><span class="cx">     
</span><del>-    void addGetByIdWithThis(const JITGetByIdWithThisGenerator&amp; gen, SlowPathGenerator* slowPath)
-    {
-        m_getByIdsWithThis.append(InlineCacheWrapper&lt;JITGetByIdWithThisGenerator&gt;(gen, slowPath));
-    }
-    
</del><span class="cx">     void addPutById(const JITPutByIdGenerator&amp; gen, SlowPathGenerator* slowPath)
</span><span class="cx">     {
</span><span class="cx">         m_putByIds.append(InlineCacheWrapper&lt;JITPutByIdGenerator&gt;(gen, slowPath));
</span><span class="lines">@@ -344,7 +339,6 @@
</span><span class="cx">     };
</span><span class="cx">     
</span><span class="cx">     Vector&lt;InlineCacheWrapper&lt;JITGetByIdGenerator&gt;, 4&gt; m_getByIds;
</span><del>-    Vector&lt;InlineCacheWrapper&lt;JITGetByIdWithThisGenerator&gt;, 4&gt; m_getByIdsWithThis;
</del><span class="cx">     Vector&lt;InlineCacheWrapper&lt;JITPutByIdGenerator&gt;, 4&gt; m_putByIds;
</span><span class="cx">     Vector&lt;InRecord, 4&gt; m_ins;
</span><span class="cx">     Vector&lt;JSCallRecord, 4&gt; m_jsCalls;
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoredfgDFGSpeculativeJITcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/dfg/DFGSpeculativeJIT.cpp (213087 => 213088)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/dfg/DFGSpeculativeJIT.cpp        2017-02-27 20:51:43 UTC (rev 213087)
+++ trunk/Source/JavaScriptCore/dfg/DFGSpeculativeJIT.cpp        2017-02-27 21:08:38 UTC (rev 213088)
</span><span class="lines">@@ -1063,11 +1063,9 @@
</span><span class="cx">             stubInfo-&gt;codeOrigin = node-&gt;origin.semantic;
</span><span class="cx">             stubInfo-&gt;patch.baseGPR = static_cast&lt;int8_t&gt;(baseGPR);
</span><span class="cx">             stubInfo-&gt;patch.valueGPR = static_cast&lt;int8_t&gt;(resultGPR);
</span><del>-            stubInfo-&gt;patch.thisGPR = static_cast&lt;int8_t&gt;(InvalidGPRReg);
</del><span class="cx"> #if USE(JSVALUE32_64)
</span><span class="cx">             stubInfo-&gt;patch.valueTagGPR = static_cast&lt;int8_t&gt;(InvalidGPRReg);
</span><span class="cx">             stubInfo-&gt;patch.baseTagGPR = static_cast&lt;int8_t&gt;(InvalidGPRReg);
</span><del>-            stubInfo-&gt;patch.thisTagGPR = static_cast&lt;int8_t&gt;(InvalidGPRReg);
</del><span class="cx"> #endif
</span><span class="cx">             stubInfo-&gt;patch.usedRegisters = usedRegisters();
</span><span class="cx"> 
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoredfgDFGSpeculativeJITh"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/dfg/DFGSpeculativeJIT.h (213087 => 213088)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/dfg/DFGSpeculativeJIT.h        2017-02-27 20:51:43 UTC (rev 213087)
+++ trunk/Source/JavaScriptCore/dfg/DFGSpeculativeJIT.h        2017-02-27 21:08:38 UTC (rev 213088)
</span><span class="lines">@@ -770,11 +770,9 @@
</span><span class="cx"> #if USE(JSVALUE64)
</span><span class="cx">     void cachedGetById(CodeOrigin, GPRReg baseGPR, GPRReg resultGPR, unsigned identifierNumber, JITCompiler::Jump slowPathTarget = JITCompiler::Jump(), SpillRegistersMode = NeedToSpill, AccessType = AccessType::Get);
</span><span class="cx">     void cachedPutById(CodeOrigin, GPRReg base, GPRReg value, GPRReg scratchGPR, unsigned identifierNumber, PutKind, JITCompiler::Jump slowPathTarget = JITCompiler::Jump(), SpillRegistersMode = NeedToSpill);
</span><del>-    void cachedGetByIdWithThis(CodeOrigin, GPRReg baseGPR, GPRReg thisGPR, GPRReg resultGPR, unsigned identifierNumber, JITCompiler::JumpList slowPathTarget = JITCompiler::JumpList());
</del><span class="cx"> #elif USE(JSVALUE32_64)
</span><span class="cx">     void cachedGetById(CodeOrigin, GPRReg baseTagGPROrNone, GPRReg basePayloadGPR, GPRReg resultTagGPR, GPRReg resultPayloadGPR, unsigned identifierNumber, JITCompiler::Jump slowPathTarget = JITCompiler::Jump(), SpillRegistersMode = NeedToSpill, AccessType = AccessType::Get);
</span><span class="cx">     void cachedPutById(CodeOrigin, GPRReg basePayloadGPR, GPRReg valueTagGPR, GPRReg valuePayloadGPR, GPRReg scratchGPR, unsigned identifierNumber, PutKind, JITCompiler::Jump slowPathTarget = JITCompiler::Jump(), SpillRegistersMode = NeedToSpill);
</span><del>-    void cachedGetByIdWithThis(CodeOrigin, GPRReg baseTagGPROrNone, GPRReg basePayloadGPR, GPRReg thisTagGPROrNone, GPRReg thisPayloadGPR, GPRReg resultTagGPR, GPRReg resultPayloadGPR, unsigned identifierNumber, JITCompiler::JumpList slowPathTarget = JITCompiler::JumpList());
</del><span class="cx"> #endif
</span><span class="cx"> 
</span><span class="cx">     void compileDeleteById(Node*);
</span><span class="lines">@@ -1563,11 +1561,6 @@
</span><span class="cx">         m_jit.setupArgumentsWithExecState(TrustedImmPtr(stubInfo), arg1, TrustedImmPtr(uid));
</span><span class="cx">         return appendCallSetResult(operation, result);
</span><span class="cx">     }
</span><del>-    JITCompiler::Call callOperation(J_JITOperation_ESsiJJI operation, GPRReg result, StructureStubInfo* stubInfo, GPRReg arg1, GPRReg arg2, UniquedStringImpl* uid)
-    {
-        m_jit.setupArgumentsWithExecState(TrustedImmPtr(stubInfo), arg1, arg2, TrustedImmPtr(uid));
-        return appendCallSetResult(operation, result);
-    }
</del><span class="cx">     JITCompiler::Call callOperation(J_JITOperation_EDA operation, GPRReg result, FPRReg arg1, GPRReg arg2)
</span><span class="cx">     {
</span><span class="cx">         m_jit.setupArgumentsWithExecState(arg1, arg2);
</span><span class="lines">@@ -2133,26 +2126,11 @@
</span><span class="cx">         m_jit.setupArgumentsWithExecState(TrustedImmPtr(stubInfo), arg1.payloadGPR(), arg1.tagGPR(), TrustedImmPtr(uid));
</span><span class="cx">         return appendCallSetResult(operation, result.payloadGPR(), result.tagGPR());
</span><span class="cx">     }
</span><del>-    JITCompiler::Call callOperation(J_JITOperation_ESsiJJI operation, JSValueRegs result, StructureStubInfo* stubInfo, JSValueRegs arg1, JSValueRegs arg2, UniquedStringImpl* uid)
-    {
-        m_jit.setupArgumentsWithExecState(TrustedImmPtr(stubInfo), arg1.payloadGPR(), arg1.tagGPR(), arg2.payloadGPR(), arg2.tagGPR(), TrustedImmPtr(uid));
-        return appendCallSetResult(operation, result.payloadGPR(), result.tagGPR());
-    }
-    JITCompiler::Call callOperation(J_JITOperation_ESsiJJI operation, JSValueRegs result, StructureStubInfo* stubInfo, int32_t arg1Tag, GPRReg arg1Payload, GPRReg arg2Tag, GPRReg arg2Payload, UniquedStringImpl* uid)
-    {
-        m_jit.setupArgumentsWithExecState(TrustedImmPtr(stubInfo), arg1Payload, TrustedImm32(arg1Tag), arg2Payload, arg2Tag, TrustedImmPtr(uid));
-        return appendCallSetResult(operation, result.payloadGPR(), result.tagGPR());
-    }
</del><span class="cx">     JITCompiler::Call callOperation(J_JITOperation_ESsiJI operation, JSValueRegs result, StructureStubInfo* stubInfo, int32_t arg1Tag, GPRReg arg1Payload, UniquedStringImpl* uid)
</span><span class="cx">     {
</span><span class="cx">         m_jit.setupArgumentsWithExecState(TrustedImmPtr(stubInfo), arg1Payload, TrustedImm32(arg1Tag), TrustedImmPtr(uid));
</span><span class="cx">         return appendCallSetResult(operation, result.payloadGPR(), result.tagGPR());
</span><span class="cx">     }
</span><del>-    JITCompiler::Call callOperation(J_JITOperation_ESsiJJI operation, JSValueRegs result, StructureStubInfo* stubInfo, int32_t arg1Tag, GPRReg arg1Payload, int32_t arg2Tag, GPRReg arg2Payload, UniquedStringImpl* uid)
-    {
-        m_jit.setupArgumentsWithExecState(TrustedImmPtr(stubInfo), arg1Payload, TrustedImm32(arg1Tag), arg2Payload, TrustedImm32(arg2Tag), TrustedImmPtr(uid));
-        return appendCallSetResult(operation, result.payloadGPR(), result.tagGPR());
-    }
</del><span class="cx">     JITCompiler::Call callOperation(J_JITOperation_ESsiJI operation, JSValueRegs result, StructureStubInfo* stubInfo, GPRReg arg1Tag, GPRReg arg1Payload, UniquedStringImpl* uid)
</span><span class="cx">     {
</span><span class="cx">         m_jit.setupArgumentsWithExecState(TrustedImmPtr(stubInfo), arg1Payload, arg1Tag, TrustedImmPtr(uid));
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoredfgDFGSpeculativeJIT32_64cpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/dfg/DFGSpeculativeJIT32_64.cpp (213087 => 213088)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/dfg/DFGSpeculativeJIT32_64.cpp        2017-02-27 20:51:43 UTC (rev 213087)
+++ trunk/Source/JavaScriptCore/dfg/DFGSpeculativeJIT32_64.cpp        2017-02-27 21:08:38 UTC (rev 213088)
</span><span class="lines">@@ -230,45 +230,6 @@
</span><span class="cx">     addSlowPathGenerator(WTFMove(slowPath));
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-void SpeculativeJIT::cachedGetByIdWithThis(
-    CodeOrigin codeOrigin, GPRReg baseTagGPROrNone, GPRReg basePayloadGPR, GPRReg thisTagGPR, GPRReg thisPayloadGPR, GPRReg resultTagGPR, GPRReg resultPayloadGPR,
-    unsigned identifierNumber, JITCompiler::JumpList slowPathTarget)
-{
-    RegisterSet usedRegisters = this-&gt;usedRegisters();
-    
-    CallSiteIndex callSite = m_jit.recordCallSiteAndGenerateExceptionHandlingOSRExitIfNeeded(codeOrigin, m_stream-&gt;size());
-    JITGetByIdWithThisGenerator gen(
-        m_jit.codeBlock(), codeOrigin, callSite, usedRegisters, identifierUID(identifierNumber),
-        JSValueRegs(resultTagGPR, resultPayloadGPR), JSValueRegs(baseTagGPROrNone, basePayloadGPR), JSValueRegs(thisTagGPR, thisPayloadGPR), AccessType::GetWithThis);
-    
-    gen.generateFastPath(m_jit);
-    
-    JITCompiler::JumpList slowCases;
-    if (!slowPathTarget.empty())
-        slowCases.append(slowPathTarget);
-    slowCases.append(gen.slowPathJump());
-
-    std::unique_ptr&lt;SlowPathGenerator&gt; slowPath;
-    if (baseTagGPROrNone == InvalidGPRReg &amp;&amp; thisTagGPR == InvalidGPRReg) {
-        slowPath = slowPathCall(
-            slowCases, this, operationGetByIdWithThisOptimize,
-            JSValueRegs(resultTagGPR, resultPayloadGPR), gen.stubInfo(),
-            static_cast&lt;int32_t&gt;(JSValue::CellTag), basePayloadGPR,
-            static_cast&lt;int32_t&gt;(JSValue::CellTag), thisPayloadGPR,
-            identifierUID(identifierNumber));
-    } else {
-        ASSERT(baseTagGPROrNone != InvalidGPRReg);
-        ASSERT(thisTagGPR != InvalidGPRReg);
-        
-        slowPath = slowPathCall(
-            slowCases, this, operationGetByIdWithThisOptimize,
-            JSValueRegs(resultTagGPR, resultPayloadGPR), gen.stubInfo(), JSValueRegs(baseTagGPROrNone, basePayloadGPR), JSValueRegs(thisTagGPR, thisPayloadGPR), identifierUID(identifierNumber));
-    }
-
-    m_jit.addGetByIdWithThis(gen, slowPath.get());
-    addSlowPathGenerator(WTFMove(slowPath));
-}
-
</del><span class="cx"> void SpeculativeJIT::cachedPutById(CodeOrigin codeOrigin, GPRReg basePayloadGPR, GPRReg valueTagGPR, GPRReg valuePayloadGPR, GPRReg scratchGPR, unsigned identifierNumber, PutKind putKind, JITCompiler::Jump slowPathTarget, SpillRegistersMode spillMode)
</span><span class="cx"> {
</span><span class="cx">     RegisterSet usedRegisters = this-&gt;usedRegisters();
</span><span class="lines">@@ -4330,42 +4291,21 @@
</span><span class="cx">     }
</span><span class="cx"> 
</span><span class="cx">     case GetByIdWithThis: {
</span><del>-        if (node-&gt;child1().useKind() == CellUse &amp;&amp; node-&gt;child2().useKind() == CellUse) {
-            SpeculateCellOperand base(this, node-&gt;child1());
-            SpeculateCellOperand thisValue(this, node-&gt;child2());
-            GPRTemporary resultTag(this);
-            GPRTemporary resultPayload(this);
-            
-            GPRReg baseGPR = base.gpr();
-            GPRReg thisGPR = thisValue.gpr();
-            GPRReg resultTagGPR = resultTag.gpr();
-            GPRReg resultPayloadGPR = resultPayload.gpr();
-            
-            cachedGetByIdWithThis(node-&gt;origin.semantic, InvalidGPRReg, baseGPR, InvalidGPRReg, thisGPR, resultTagGPR, resultPayloadGPR, node-&gt;identifierNumber());
-            
-            jsValueResult(resultTagGPR, resultPayloadGPR, node, UseChildrenCalledExplicitly);
-        } else {
-            JSValueOperand base(this, node-&gt;child1());
-            JSValueOperand thisValue(this, node-&gt;child2());
-            GPRTemporary resultTag(this);
-            GPRTemporary resultPayload(this);
-            
-            GPRReg baseTagGPR = base.tagGPR();
-            GPRReg basePayloadGPR = base.payloadGPR();
-            GPRReg thisTagGPR = thisValue.tagGPR();
-            GPRReg thisPayloadGPR = thisValue.payloadGPR();
-            GPRReg resultTagGPR = resultTag.gpr();
-            GPRReg resultPayloadGPR = resultPayload.gpr();
-            
-            JITCompiler::JumpList notCellList;
-            notCellList.append(m_jit.branchIfNotCell(base.jsValueRegs()));
-            notCellList.append(m_jit.branchIfNotCell(thisValue.jsValueRegs()));
-            
-            cachedGetByIdWithThis(node-&gt;origin.semantic, baseTagGPR, basePayloadGPR, thisTagGPR, thisPayloadGPR, resultTagGPR, resultPayloadGPR, node-&gt;identifierNumber(), notCellList);
-            
-            jsValueResult(resultTagGPR, resultPayloadGPR, node, UseChildrenCalledExplicitly);
-        }
-        
</del><ins>+        JSValueOperand base(this, node-&gt;child1());
+        JSValueRegs baseRegs = base.jsValueRegs();
+        JSValueOperand thisValue(this, node-&gt;child2());
+        JSValueRegs thisRegs = thisValue.jsValueRegs();
+
+        GPRFlushedCallResult resultPayload(this);
+        GPRFlushedCallResult2 resultTag(this);
+        GPRReg resultPayloadGPR = resultPayload.gpr();
+        GPRReg resultTagGPR = resultTag.gpr();
+
+        flushRegisters();
+        callOperation(operationGetByIdWithThis, JSValueRegs(resultTagGPR, resultPayloadGPR), baseRegs, thisRegs, identifierUID(node-&gt;identifierNumber()));
+        m_jit.exceptionCheck();
+
+        jsValueResult(resultTagGPR, resultPayloadGPR, node);
</ins><span class="cx">         break;
</span><span class="cx">     }
</span><span class="cx"> 
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoredfgDFGSpeculativeJIT64cpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/dfg/DFGSpeculativeJIT64.cpp (213087 => 213088)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/dfg/DFGSpeculativeJIT64.cpp        2017-02-27 20:51:43 UTC (rev 213087)
+++ trunk/Source/JavaScriptCore/dfg/DFGSpeculativeJIT64.cpp        2017-02-27 21:08:38 UTC (rev 213088)
</span><span class="lines">@@ -188,34 +188,6 @@
</span><span class="cx">     addSlowPathGenerator(WTFMove(slowPath));
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-void SpeculativeJIT::cachedGetByIdWithThis(CodeOrigin codeOrigin, GPRReg baseGPR, GPRReg thisGPR, GPRReg resultGPR, unsigned identifierNumber, JITCompiler::JumpList slowPathTarget)
-{
-    CallSiteIndex callSite = m_jit.recordCallSiteAndGenerateExceptionHandlingOSRExitIfNeeded(codeOrigin, m_stream-&gt;size());
-    RegisterSet usedRegisters = this-&gt;usedRegisters();
-    // We've already flushed registers to the stack, we don't need to spill these.
-    usedRegisters.set(baseGPR, false);
-    usedRegisters.set(thisGPR, false);
-    usedRegisters.set(resultGPR, false);
-    
-    JITGetByIdWithThisGenerator gen(
-        m_jit.codeBlock(), codeOrigin, callSite, usedRegisters, identifierUID(identifierNumber),
-        JSValueRegs(resultGPR), JSValueRegs(baseGPR), JSValueRegs(thisGPR), AccessType::GetWithThis);
-    gen.generateFastPath(m_jit);
-    
-    JITCompiler::JumpList slowCases;
-    if (!slowPathTarget.empty())
-        slowCases.append(slowPathTarget);
-    slowCases.append(gen.slowPathJump());
-    
-    auto slowPath = slowPathCall(
-        slowCases, this, operationGetByIdWithThisOptimize,
-        DontSpill, ExceptionCheckRequirement::CheckNeeded,
-        resultGPR, gen.stubInfo(), baseGPR, thisGPR, identifierUID(identifierNumber));
-    
-    m_jit.addGetByIdWithThis(gen, slowPath.get());
-    addSlowPathGenerator(WTFMove(slowPath));
-}
-
</del><span class="cx"> void SpeculativeJIT::cachedPutById(CodeOrigin codeOrigin, GPRReg baseGPR, GPRReg valueGPR, GPRReg scratchGPR, unsigned identifierNumber, PutKind putKind, JITCompiler::Jump slowPathTarget, SpillRegistersMode spillMode)
</span><span class="cx"> {
</span><span class="cx">     CallSiteIndex callSite = m_jit.recordCallSiteAndGenerateExceptionHandlingOSRExitIfNeeded(codeOrigin, m_stream-&gt;size());
</span><span class="lines">@@ -4338,41 +4310,19 @@
</span><span class="cx">     }
</span><span class="cx"> 
</span><span class="cx">     case GetByIdWithThis: {
</span><del>-        if (node-&gt;child1().useKind() == CellUse &amp;&amp; node-&gt;child2().useKind() == CellUse) {
-            SpeculateCellOperand base(this, node-&gt;child1());
-            GPRReg baseGPR = base.gpr();
-            SpeculateCellOperand thisValue(this, node-&gt;child2());
-            GPRReg thisValueGPR = thisValue.gpr();
-            
-            GPRFlushedCallResult result(this);
-            GPRReg resultGPR = result.gpr();
-            
-            flushRegisters();
-            
-            cachedGetByIdWithThis(node-&gt;origin.semantic, baseGPR, thisValueGPR, resultGPR, node-&gt;identifierNumber(), JITCompiler::JumpList());
-            
-            jsValueResult(resultGPR, node);
-            
-        } else {
-            JSValueOperand base(this, node-&gt;child1());
-            GPRReg baseGPR = base.gpr();
-            JSValueOperand thisValue(this, node-&gt;child2());
-            GPRReg thisValueGPR = thisValue.gpr();
-            
-            GPRFlushedCallResult result(this);
-            GPRReg resultGPR = result.gpr();
-            
-            flushRegisters();
-            
-            JITCompiler::JumpList notCellList;
-            notCellList.append(m_jit.branchIfNotCell(JSValueRegs(baseGPR)));
-            notCellList.append(m_jit.branchIfNotCell(JSValueRegs(thisValueGPR)));
-            
-            cachedGetByIdWithThis(node-&gt;origin.semantic, baseGPR, thisValueGPR, resultGPR, node-&gt;identifierNumber(), notCellList);
-            
-            jsValueResult(resultGPR, node);
-        }
-        
</del><ins>+        JSValueOperand base(this, node-&gt;child1());
+        GPRReg baseGPR = base.gpr();
+        JSValueOperand thisValue(this, node-&gt;child2());
+        GPRReg thisValueGPR = thisValue.gpr();
+
+        GPRFlushedCallResult result(this);
+        GPRReg resultGPR = result.gpr();
+
+        flushRegisters();
+        callOperation(operationGetByIdWithThis, resultGPR, baseGPR, thisValueGPR, identifierUID(node-&gt;identifierNumber()));
+        m_jit.exceptionCheck();
+
+        jsValueResult(resultGPR, node);
</ins><span class="cx">         break;
</span><span class="cx">     }
</span><span class="cx"> 
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoreftlFTLLowerDFGToB3cpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/ftl/FTLLowerDFGToB3.cpp (213087 => 213088)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/ftl/FTLLowerDFGToB3.cpp        2017-02-27 20:51:43 UTC (rev 213087)
+++ trunk/Source/JavaScriptCore/ftl/FTLLowerDFGToB3.cpp        2017-02-27 21:08:38 UTC (rev 213088)
</span><span class="lines">@@ -2867,40 +2867,10 @@
</span><span class="cx"> 
</span><span class="cx">     void compileGetByIdWithThis()
</span><span class="cx">     {
</span><del>-        if (m_node-&gt;child1().useKind() == CellUse &amp;&amp; m_node-&gt;child2().useKind() == CellUse)
-            setJSValue(getByIdWithThis(lowCell(m_node-&gt;child1()), lowCell(m_node-&gt;child2())));
-        else {
-            LValue base = lowJSValue(m_node-&gt;child1());
-            LValue thisValue = lowJSValue(m_node-&gt;child2());
-            
-            LBasicBlock baseCellCase = m_out.newBlock();
-            LBasicBlock notCellCase = m_out.newBlock();
-            LBasicBlock thisValueCellCase = m_out.newBlock();
-            LBasicBlock continuation = m_out.newBlock();
-            
-            m_out.branch(
-                isCell(base, provenType(m_node-&gt;child1())), unsure(baseCellCase), unsure(notCellCase));
-            
-            LBasicBlock lastNext = m_out.appendTo(baseCellCase, thisValueCellCase);
-            
-            m_out.branch(
-                isCell(thisValue, provenType(m_node-&gt;child2())), unsure(thisValueCellCase), unsure(notCellCase));
-            
-            m_out.appendTo(thisValueCellCase, notCellCase);
-            ValueFromBlock cellResult = m_out.anchor(getByIdWithThis(base, thisValue));
-            m_out.jump(continuation);
-
-            m_out.appendTo(notCellCase, continuation);
-            ValueFromBlock notCellResult = m_out.anchor(vmCall(
-                Int64, m_out.operation(operationGetByIdWithThis),
-                m_callFrame, base, thisValue,
-                m_out.constIntPtr(m_graph.identifiers()[m_node-&gt;identifierNumber()])));
-            m_out.jump(continuation);
-            
-            m_out.appendTo(continuation, lastNext);
-            setJSValue(m_out.phi(Int64, cellResult, notCellResult));
-        }
-        
</del><ins>+        LValue base = lowJSValue(m_node-&gt;child1());
+        LValue thisValue = lowJSValue(m_node-&gt;child2());
+        LValue result = vmCall(Int64, m_out.operation(operationGetByIdWithThis), m_callFrame, base, thisValue, m_out.constIntPtr(m_graph.identifiers()[m_node-&gt;identifierNumber()]));
+        setJSValue(result);
</ins><span class="cx">     }
</span><span class="cx"> 
</span><span class="cx">     void compileGetByValWithThis()
</span><span class="lines">@@ -8107,7 +8077,6 @@
</span><span class="cx">                         stubInfo-&gt;codeOrigin = node-&gt;origin.semantic;
</span><span class="cx">                         stubInfo-&gt;patch.baseGPR = static_cast&lt;int8_t&gt;(baseGPR);
</span><span class="cx">                         stubInfo-&gt;patch.valueGPR = static_cast&lt;int8_t&gt;(resultGPR);
</span><del>-                        stubInfo-&gt;patch.thisGPR = static_cast&lt;int8_t&gt;(InvalidGPRReg);
</del><span class="cx">                         stubInfo-&gt;patch.usedRegisters = params.unavailableRegisters();
</span><span class="cx"> 
</span><span class="cx">                         CCallHelpers::PatchableJump jump = jit.patchableJump();
</span><span class="lines">@@ -9791,75 +9760,7 @@
</span><span class="cx"> 
</span><span class="cx">         return patchpoint;
</span><span class="cx">     }
</span><del>-    
-    LValue getByIdWithThis(LValue base, LValue thisValue)
-    {
-        Node* node = m_node;
-        UniquedStringImpl* uid = m_graph.identifiers()[node-&gt;identifierNumber()];
</del><span class="cx"> 
</span><del>-        B3::PatchpointValue* patchpoint = m_out.patchpoint(Int64);
-        patchpoint-&gt;appendSomeRegister(base);
-        patchpoint-&gt;appendSomeRegister(thisValue);
-        patchpoint-&gt;append(m_tagMask, ValueRep::lateReg(GPRInfo::tagMaskRegister));
-        patchpoint-&gt;append(m_tagTypeNumber, ValueRep::lateReg(GPRInfo::tagTypeNumberRegister));
-
-        patchpoint-&gt;clobber(RegisterSet::macroScratchRegisters());
-
-        RefPtr&lt;PatchpointExceptionHandle&gt; exceptionHandle =
-            preparePatchpointForExceptions(patchpoint);
-
-        State* state = &amp;m_ftlState;
-        patchpoint-&gt;setGenerator(
-            [=] (CCallHelpers&amp; jit, const StackmapGenerationParams&amp; params) {
-                AllowMacroScratchRegisterUsage allowScratch(jit);
-
-                CallSiteIndex callSiteIndex =
-                    state-&gt;jitCode-&gt;common.addUniqueCallSiteIndex(node-&gt;origin.semantic);
-
-                // This is the direct exit target for operation calls.
-                Box&lt;CCallHelpers::JumpList&gt; exceptions =
-                    exceptionHandle-&gt;scheduleExitCreation(params)-&gt;jumps(jit);
-
-                // This is the exit for call IC's created by the getById for getters. We don't have
-                // to do anything weird other than call this, since it will associate the exit with
-                // the callsite index.
-                exceptionHandle-&gt;scheduleExitCreationForUnwind(params, callSiteIndex);
-
-                auto generator = Box&lt;JITGetByIdWithThisGenerator&gt;::create(
-                    jit.codeBlock(), node-&gt;origin.semantic, callSiteIndex,
-                    params.unavailableRegisters(), uid, JSValueRegs(params[0].gpr()),
-                    JSValueRegs(params[1].gpr()), JSValueRegs(params[2].gpr()), AccessType::GetWithThis);
-
-                generator-&gt;generateFastPath(jit);
-                CCallHelpers::Label done = jit.label();
-
-                params.addLatePath(
-                    [=] (CCallHelpers&amp; jit) {
-                        AllowMacroScratchRegisterUsage allowScratch(jit);
-
-                        J_JITOperation_ESsiJJI optimizationFunction = operationGetByIdWithThisOptimize;
-
-                        generator-&gt;slowPathJump().link(&amp;jit);
-                        CCallHelpers::Label slowPathBegin = jit.label();
-                        CCallHelpers::Call slowPathCall = callOperation(
-                            *state, params.unavailableRegisters(), jit, node-&gt;origin.semantic,
-                            exceptions.get(), optimizationFunction, params[0].gpr(),
-                            CCallHelpers::TrustedImmPtr(generator-&gt;stubInfo()), params[1].gpr(),
-                            params[2].gpr(), CCallHelpers::TrustedImmPtr(uid)).call();
-                        jit.jump().linkTo(done, &amp;jit);
-
-                        generator-&gt;reportSlowPathCall(slowPathBegin, slowPathCall);
-
-                        jit.addLinkTask(
-                            [=] (LinkBuffer&amp; linkBuffer) {
-                                generator-&gt;finalize(linkBuffer);
-                            });
-                    });
-            });
-
-        return patchpoint;
-    }
-
</del><span class="cx">     LValue isFastTypedArray(LValue object)
</span><span class="cx">     {
</span><span class="cx">         return m_out.equal(
</span></span></pre></div>
<a id="trunkSourceJavaScriptCorejitCCallHelpersh"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/jit/CCallHelpers.h (213087 => 213088)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/jit/CCallHelpers.h        2017-02-27 20:51:43 UTC (rev 213087)
+++ trunk/Source/JavaScriptCore/jit/CCallHelpers.h        2017-02-27 21:08:38 UTC (rev 213088)
</span><span class="lines">@@ -724,18 +724,6 @@
</span><span class="cx">         addCallArgument(arg3);
</span><span class="cx">         addCallArgument(arg4);
</span><span class="cx">     }
</span><del>-    
-    ALWAYS_INLINE void setupArgumentsWithExecState(TrustedImmPtr arg1, GPRReg arg2, TrustedImm32 arg3, GPRReg arg4, TrustedImm32 arg5, TrustedImmPtr arg6)
-    {
-        resetCallArguments();
-        addCallArgument(GPRInfo::callFrameRegister);
-        addCallArgument(arg1);
-        addCallArgument(arg2);
-        addCallArgument(arg3);
-        addCallArgument(arg4);
-        addCallArgument(arg5);
-        addCallArgument(arg6);
-    }
</del><span class="cx"> 
</span><span class="cx">     ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, TrustedImm32 arg2, TrustedImmPtr arg3, GPRReg arg4)
</span><span class="cx">     {
</span><span class="lines">@@ -747,18 +735,6 @@
</span><span class="cx">         addCallArgument(arg4);
</span><span class="cx">     }
</span><span class="cx"> 
</span><del>-    ALWAYS_INLINE void setupArgumentsWithExecState(TrustedImmPtr arg1, GPRReg arg2, TrustedImm32 arg3, GPRReg arg4, GPRReg arg5, TrustedImmPtr arg6)
-    {
-        resetCallArguments();
-        addCallArgument(GPRInfo::callFrameRegister);
-        addCallArgument(arg1);
-        addCallArgument(arg2);
-        addCallArgument(arg3);
-        addCallArgument(arg4);
-        addCallArgument(arg5);
-        addCallArgument(arg6);
-    }
-
</del><span class="cx">     ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, TrustedImmPtr arg2, GPRReg arg3, GPRReg arg4)
</span><span class="cx">     {
</span><span class="cx">         resetCallArguments();
</span><span class="lines">@@ -1717,22 +1693,6 @@
</span><span class="cx">         poke(arg4, POKE_ARGUMENT_OFFSET);
</span><span class="cx">         setupArgumentsWithExecState(arg1, arg2, arg3);
</span><span class="cx">     }
</span><del>-    
-    ALWAYS_INLINE void setupArgumentsWithExecState(TrustedImmPtr arg1, GPRReg arg2, TrustedImm32 arg3, GPRReg arg4, GPRReg arg5, TrustedImmPtr arg6)
-    {
-        poke(arg6, POKE_ARGUMENT_OFFSET + 2);
-        poke(arg5, POKE_ARGUMENT_OFFSET + 1);
-        poke(arg4, POKE_ARGUMENT_OFFSET);
-        setupArgumentsWithExecState(arg1, arg2, arg3);
-    }
-    
-    ALWAYS_INLINE void setupArgumentsWithExecState(TrustedImmPtr arg1, GPRReg arg2, TrustedImm32 arg3, GPRReg arg4, TrustedImm32 arg5, TrustedImmPtr arg6)
-    {
-        poke(arg6, POKE_ARGUMENT_OFFSET + 2);
-        poke(arg5, POKE_ARGUMENT_OFFSET + 1);
-        poke(arg4, POKE_ARGUMENT_OFFSET);
-        setupArgumentsWithExecState(arg1, arg2, arg3);
-    }
</del><span class="cx"> 
</span><span class="cx">     ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, TrustedImmPtr arg2, TrustedImm32 arg3, GPRReg arg4, GPRReg arg5)
</span><span class="cx">     {
</span></span></pre></div>
<a id="trunkSourceJavaScriptCorejitICStatsh"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/jit/ICStats.h (213087 => 213088)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/jit/ICStats.h        2017-02-27 20:51:43 UTC (rev 213087)
+++ trunk/Source/JavaScriptCore/jit/ICStats.h        2017-02-27 21:08:38 UTC (rev 213088)
</span><span class="lines">@@ -48,7 +48,6 @@
</span><span class="cx">     macro(OperationGetByIdGeneric) \
</span><span class="cx">     macro(OperationGetByIdBuildList) \
</span><span class="cx">     macro(OperationGetByIdOptimize) \
</span><del>-    macro(OperationGetByIdWithThisOptimize) \
</del><span class="cx">     macro(OperationInOptimize) \
</span><span class="cx">     macro(OperationIn) \
</span><span class="cx">     macro(OperationGenericIn) \
</span></span></pre></div>
<a id="trunkSourceJavaScriptCorejitJITcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/jit/JIT.cpp (213087 => 213088)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/jit/JIT.cpp        2017-02-27 20:51:43 UTC (rev 213087)
+++ trunk/Source/JavaScriptCore/jit/JIT.cpp        2017-02-27 21:08:38 UTC (rev 213088)
</span><span class="lines">@@ -83,7 +83,6 @@
</span><span class="cx">     , m_labels(codeBlock ? codeBlock-&gt;numberOfInstructions() : 0)
</span><span class="cx">     , m_bytecodeOffset(std::numeric_limits&lt;unsigned&gt;::max())
</span><span class="cx">     , m_getByIdIndex(UINT_MAX)
</span><del>-    , m_getByIdWithThisIndex(UINT_MAX)
</del><span class="cx">     , m_putByIdIndex(UINT_MAX)
</span><span class="cx">     , m_byValInstructionIndex(UINT_MAX)
</span><span class="cx">     , m_callLinkInfoIndex(UINT_MAX)
</span><span class="lines">@@ -438,7 +437,6 @@
</span><span class="cx">     Instruction* instructionsBegin = m_codeBlock-&gt;instructions().begin();
</span><span class="cx"> 
</span><span class="cx">     m_getByIdIndex = 0;
</span><del>-    m_getByIdWithThisIndex = 0;
</del><span class="cx">     m_putByIdIndex = 0;
</span><span class="cx">     m_byValInstructionIndex = 0;
</span><span class="cx">     m_callLinkInfoIndex = 0;
</span><span class="lines">@@ -494,7 +492,6 @@
</span><span class="cx">         case op_get_by_id_proto_load:
</span><span class="cx">         case op_get_by_id_unset:
</span><span class="cx">         DEFINE_SLOWCASE_OP(op_get_by_id)
</span><del>-        DEFINE_SLOWCASE_OP(op_get_by_id_with_this)
</del><span class="cx">         DEFINE_SLOWCASE_OP(op_get_by_val)
</span><span class="cx">         DEFINE_SLOWCASE_OP(op_instanceof)
</span><span class="cx">         DEFINE_SLOWCASE_OP(op_instanceof_custom)
</span><span class="lines">@@ -554,7 +551,6 @@
</span><span class="cx">     }
</span><span class="cx"> 
</span><span class="cx">     RELEASE_ASSERT(m_getByIdIndex == m_getByIds.size());
</span><del>-    RELEASE_ASSERT(m_getByIdWithThisIndex == m_getByIdsWithThis.size());
</del><span class="cx">     RELEASE_ASSERT(m_putByIdIndex == m_putByIds.size());
</span><span class="cx">     RELEASE_ASSERT(m_callLinkInfoIndex == m_callCompilationInfo.size());
</span><span class="cx">     RELEASE_ASSERT(numberOfValueProfiles == m_codeBlock-&gt;numberOfValueProfiles());
</span><span class="lines">@@ -777,8 +773,6 @@
</span><span class="cx"> 
</span><span class="cx">     for (unsigned i = m_getByIds.size(); i--;)
</span><span class="cx">         m_getByIds[i].finalize(patchBuffer);
</span><del>-    for (unsigned i = m_getByIdsWithThis.size(); i--;)
-        m_getByIdsWithThis[i].finalize(patchBuffer);
</del><span class="cx">     for (unsigned i = m_putByIds.size(); i--;)
</span><span class="cx">         m_putByIds[i].finalize(patchBuffer);
</span><span class="cx"> 
</span></span></pre></div>
<a id="trunkSourceJavaScriptCorejitJITh"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/jit/JIT.h (213087 => 213088)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/jit/JIT.h        2017-02-27 20:51:43 UTC (rev 213087)
+++ trunk/Source/JavaScriptCore/jit/JIT.h        2017-02-27 21:08:38 UTC (rev 213088)
</span><span class="lines">@@ -623,7 +623,6 @@
</span><span class="cx">         void emitSlow_op_get_callee(Instruction*, Vector&lt;SlowCaseEntry&gt;::iterator&amp;);
</span><span class="cx">         void emitSlow_op_try_get_by_id(Instruction*, Vector&lt;SlowCaseEntry&gt;::iterator&amp;);
</span><span class="cx">         void emitSlow_op_get_by_id(Instruction*, Vector&lt;SlowCaseEntry&gt;::iterator&amp;);
</span><del>-        void emitSlow_op_get_by_id_with_this(Instruction*, Vector&lt;SlowCaseEntry&gt;::iterator&amp;);
</del><span class="cx">         void emitSlow_op_get_arguments_length(Instruction*, Vector&lt;SlowCaseEntry&gt;::iterator&amp;);
</span><span class="cx">         void emitSlow_op_get_by_val(Instruction*, Vector&lt;SlowCaseEntry&gt;::iterator&amp;);
</span><span class="cx">         void emitSlow_op_get_argument_by_val(Instruction*, Vector&lt;SlowCaseEntry&gt;::iterator&amp;);
</span><span class="lines">@@ -760,11 +759,9 @@
</span><span class="cx"> #if USE(JSVALUE64)
</span><span class="cx">         MacroAssembler::Call callOperation(J_JITOperation_ESsiJI, int, StructureStubInfo*, GPRReg, UniquedStringImpl*);
</span><span class="cx">         MacroAssembler::Call callOperation(WithProfileTag, J_JITOperation_ESsiJI, int, StructureStubInfo*, GPRReg, UniquedStringImpl*);
</span><del>-        MacroAssembler::Call callOperation(WithProfileTag, J_JITOperation_ESsiJJI, int, StructureStubInfo*, GPRReg, GPRReg, UniquedStringImpl*);
</del><span class="cx"> #else
</span><span class="cx">         MacroAssembler::Call callOperation(J_JITOperation_ESsiJI, int, StructureStubInfo*, GPRReg, GPRReg, UniquedStringImpl*);
</span><span class="cx">         MacroAssembler::Call callOperation(WithProfileTag, J_JITOperation_ESsiJI, int, StructureStubInfo*, GPRReg, GPRReg, UniquedStringImpl*);
</span><del>-        MacroAssembler::Call callOperation(WithProfileTag, J_JITOperation_ESsiJJI, int, StructureStubInfo*, GPRReg, GPRReg, GPRReg, GPRReg, UniquedStringImpl*);
</del><span class="cx"> #endif
</span><span class="cx">         MacroAssembler::Call callOperation(J_JITOperation_EJI, int, GPRReg, UniquedStringImpl*);
</span><span class="cx">         MacroAssembler::Call callOperation(J_JITOperation_EJJ, int, GPRReg, GPRReg);
</span><span class="lines">@@ -935,7 +932,6 @@
</span><span class="cx">         Vector&lt;CallRecord&gt; m_calls;
</span><span class="cx">         Vector&lt;Label&gt; m_labels;
</span><span class="cx">         Vector&lt;JITGetByIdGenerator&gt; m_getByIds;
</span><del>-        Vector&lt;JITGetByIdWithThisGenerator&gt; m_getByIdsWithThis;
</del><span class="cx">         Vector&lt;JITPutByIdGenerator&gt; m_putByIds;
</span><span class="cx">         Vector&lt;ByValCompilationInfo&gt; m_byValCompilationInfo;
</span><span class="cx">         Vector&lt;CallCompilationInfo&gt; m_callCompilationInfo;
</span><span class="lines">@@ -950,7 +946,6 @@
</span><span class="cx">         Label m_exceptionHandler;
</span><span class="cx"> 
</span><span class="cx">         unsigned m_getByIdIndex;
</span><del>-        unsigned m_getByIdWithThisIndex;
</del><span class="cx">         unsigned m_putByIdIndex;
</span><span class="cx">         unsigned m_byValInstructionIndex;
</span><span class="cx">         unsigned m_callLinkInfoIndex;
</span></span></pre></div>
<a id="trunkSourceJavaScriptCorejitJITInlineCacheGeneratorcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/jit/JITInlineCacheGenerator.cpp (213087 => 213088)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/jit/JITInlineCacheGenerator.cpp        2017-02-27 20:51:43 UTC (rev 213087)
+++ trunk/Source/JavaScriptCore/jit/JITInlineCacheGenerator.cpp        2017-02-27 21:08:38 UTC (rev 213088)
</span><span class="lines">@@ -62,11 +62,9 @@
</span><span class="cx">     
</span><span class="cx">     m_stubInfo-&gt;patch.baseGPR = static_cast&lt;int8_t&gt;(base.payloadGPR());
</span><span class="cx">     m_stubInfo-&gt;patch.valueGPR = static_cast&lt;int8_t&gt;(value.payloadGPR());
</span><del>-    m_stubInfo-&gt;patch.thisGPR = static_cast&lt;int8_t&gt;(InvalidGPRReg);
</del><span class="cx"> #if USE(JSVALUE32_64)
</span><span class="cx">     m_stubInfo-&gt;patch.baseTagGPR = static_cast&lt;int8_t&gt;(base.tagGPR());
</span><span class="cx">     m_stubInfo-&gt;patch.valueTagGPR = static_cast&lt;int8_t&gt;(value.tagGPR());
</span><del>-    m_stubInfo-&gt;patch.thisTagGPR = static_cast&lt;int8_t&gt;(InvalidGPRReg);
</del><span class="cx"> #endif
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="lines">@@ -118,24 +116,6 @@
</span><span class="cx">     generateFastCommon(jit, m_isLengthAccess ? InlineAccess::sizeForLengthAccess() : InlineAccess::sizeForPropertyAccess());
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-JITGetByIdWithThisGenerator::JITGetByIdWithThisGenerator(
-    CodeBlock* codeBlock, CodeOrigin codeOrigin, CallSiteIndex callSite, const RegisterSet&amp; usedRegisters,
-    UniquedStringImpl*, JSValueRegs value, JSValueRegs base, JSValueRegs thisRegs, AccessType accessType)
-    : JITByIdGenerator(codeBlock, codeOrigin, callSite, accessType, usedRegisters, base, value)
-{
-    RELEASE_ASSERT(thisRegs.payloadGPR() != thisRegs.tagGPR());
-
-    m_stubInfo-&gt;patch.thisGPR = static_cast&lt;int8_t&gt;(thisRegs.payloadGPR());
-#if USE(JSVALUE32_64)
-    m_stubInfo-&gt;patch.thisTagGPR = static_cast&lt;int8_t&gt;(thisRegs.tagGPR());
-#endif
-}
-
-void JITGetByIdWithThisGenerator::generateFastPath(MacroAssembler&amp; jit)
-{
-    generateFastCommon(jit, InlineAccess::sizeForPropertyAccess());
-}
-
</del><span class="cx"> JITPutByIdGenerator::JITPutByIdGenerator(
</span><span class="cx">     CodeBlock* codeBlock, CodeOrigin codeOrigin, CallSiteIndex callSite, const RegisterSet&amp; usedRegisters,
</span><span class="cx">     JSValueRegs base, JSValueRegs value, GPRReg scratch, 
</span></span></pre></div>
<a id="trunkSourceJavaScriptCorejitJITInlineCacheGeneratorh"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/jit/JITInlineCacheGenerator.h (213087 => 213088)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/jit/JITInlineCacheGenerator.h        2017-02-27 20:51:43 UTC (rev 213087)
+++ trunk/Source/JavaScriptCore/jit/JITInlineCacheGenerator.h        2017-02-27 21:08:38 UTC (rev 213088)
</span><span class="lines">@@ -107,17 +107,6 @@
</span><span class="cx">     bool m_isLengthAccess;
</span><span class="cx"> };
</span><span class="cx"> 
</span><del>-class JITGetByIdWithThisGenerator : public JITByIdGenerator {
-public:
-    JITGetByIdWithThisGenerator() { }
-
-    JITGetByIdWithThisGenerator(
-        CodeBlock*, CodeOrigin, CallSiteIndex, const RegisterSet&amp; usedRegisters, UniquedStringImpl* propertyName,
-        JSValueRegs value, JSValueRegs base, JSValueRegs thisRegs, AccessType);
-
-    void generateFastPath(MacroAssembler&amp;);
-};
-
</del><span class="cx"> class JITPutByIdGenerator : public JITByIdGenerator {
</span><span class="cx"> public:
</span><span class="cx">     JITPutByIdGenerator() { }
</span></span></pre></div>
<a id="trunkSourceJavaScriptCorejitJITInlinesh"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/jit/JITInlines.h (213087 => 213088)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/jit/JITInlines.h        2017-02-27 20:51:43 UTC (rev 213087)
+++ trunk/Source/JavaScriptCore/jit/JITInlines.h        2017-02-27 21:08:38 UTC (rev 213088)
</span><span class="lines">@@ -518,12 +518,6 @@
</span><span class="cx">     return appendCallWithExceptionCheckSetJSValueResultWithProfile(operation, dst);
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(JIT::WithProfileTag, J_JITOperation_ESsiJJI operation, int dst, StructureStubInfo* stubInfo, GPRReg arg1, GPRReg arg2, UniquedStringImpl* uid)
-{
-    setupArgumentsWithExecState(TrustedImmPtr(stubInfo), arg1, arg2, TrustedImmPtr(uid));
-    return appendCallWithExceptionCheckSetJSValueResultWithProfile(operation, dst);
-}
-
</del><span class="cx"> ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(JIT::WithProfileTag, J_JITOperation_EJJ operation, int dst, GPRReg arg1, GPRReg arg2)
</span><span class="cx"> {
</span><span class="cx">     setupArgumentsWithExecState(arg1, arg2);
</span><span class="lines">@@ -710,12 +704,6 @@
</span><span class="cx">     return appendCallWithExceptionCheckSetJSValueResult(operation, dst);
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(JIT::WithProfileTag, J_JITOperation_ESsiJJI operation, int dst, StructureStubInfo* stubInfo, GPRReg arg1Tag, GPRReg arg1Payload, GPRReg arg2Tag, GPRReg arg2Payload, UniquedStringImpl* uid)
-{
-    setupArgumentsWithExecState(TrustedImmPtr(stubInfo), arg1Payload, arg1Tag, arg2Payload, arg2Tag, TrustedImmPtr(uid));
-    return appendCallWithExceptionCheckSetJSValueResultWithProfile(operation, dst);
-}
-
</del><span class="cx"> ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(J_JITOperation_EJJ operation, int dst, GPRReg arg1Tag, GPRReg arg1Payload, GPRReg arg2Tag, GPRReg arg2Payload)
</span><span class="cx"> {
</span><span class="cx">     setupArgumentsWithExecState(EABI_32BIT_DUMMY_ARG arg1Payload, arg1Tag, arg2Payload, arg2Tag);
</span></span></pre></div>
<a id="trunkSourceJavaScriptCorejitJITOperationscpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/jit/JITOperations.cpp (213087 => 213088)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/jit/JITOperations.cpp        2017-02-27 20:51:43 UTC (rev 213087)
+++ trunk/Source/JavaScriptCore/jit/JITOperations.cpp        2017-02-27 21:08:38 UTC (rev 213088)
</span><span class="lines">@@ -265,43 +265,6 @@
</span><span class="cx">     }));
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-EncodedJSValue JIT_OPERATION operationGetByIdWithThisGeneric(ExecState* exec, StructureStubInfo* stubInfo, EncodedJSValue base, EncodedJSValue thisEncoded, UniquedStringImpl* uid)
-{
-    SuperSamplerScope superSamplerScope(false);
-
-    VM* vm = &amp;exec-&gt;vm();
-    NativeCallFrameTracer tracer(vm, exec);
-    Identifier ident = Identifier::fromUid(vm, uid);
-
-    stubInfo-&gt;tookSlowPath = true;
-
-    JSValue baseValue = JSValue::decode(base);
-    JSValue thisValue = JSValue::decode(thisEncoded);
-    PropertySlot slot(thisValue, PropertySlot::InternalMethodType::Get);
-
-    return JSValue::encode(baseValue.get(exec, ident, slot));
-}
-
-EncodedJSValue JIT_OPERATION operationGetByIdWithThisOptimize(ExecState* exec, StructureStubInfo* stubInfo, EncodedJSValue base, EncodedJSValue thisEncoded, UniquedStringImpl* uid)
-{
-    SuperSamplerScope superSamplerScope(false);
-    
-    VM* vm = &amp;exec-&gt;vm();
-    NativeCallFrameTracer tracer(vm, exec);
-    Identifier ident = Identifier::fromUid(vm, uid);
-
-    JSValue baseValue = JSValue::decode(base);
-    JSValue thisValue = JSValue::decode(thisEncoded);
-    LOG_IC((ICEvent::OperationGetByIdWithThisOptimize, baseValue.classInfoOrNull(*vm), ident));
-
-    PropertySlot slot(thisValue, PropertySlot::InternalMethodType::Get);
-    return JSValue::encode(baseValue.getPropertySlot(exec, ident, slot, [&amp;] (bool found, PropertySlot&amp; slot) -&gt; JSValue {
-        if (stubInfo-&gt;considerCaching(exec-&gt;codeBlock(), baseValue.structureOrNull()))
-            repatchGetByID(exec, baseValue, ident, slot, *stubInfo, GetByIDKind::WithThis);
-        return found ? slot.getValue(exec, ident) : jsUndefined();
-    }));
-}
-
</del><span class="cx"> EncodedJSValue JIT_OPERATION operationInOptimize(ExecState* exec, StructureStubInfo* stubInfo, JSCell* base, UniquedStringImpl* key)
</span><span class="cx"> {
</span><span class="cx">     SuperSamplerScope superSamplerScope(false);
</span></span></pre></div>
<a id="trunkSourceJavaScriptCorejitJITOperationsh"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/jit/JITOperations.h (213087 => 213088)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/jit/JITOperations.h        2017-02-27 20:51:43 UTC (rev 213087)
+++ trunk/Source/JavaScriptCore/jit/JITOperations.h        2017-02-27 21:08:38 UTC (rev 213088)
</span><span class="lines">@@ -170,7 +170,6 @@
</span><span class="cx"> typedef EncodedJSValue (JIT_OPERATION *J_JITOperation_ESS)(ExecState*, size_t, size_t);
</span><span class="cx"> typedef EncodedJSValue (JIT_OPERATION *J_JITOperation_ESsiCI)(ExecState*, StructureStubInfo*, JSCell*, UniquedStringImpl*);
</span><span class="cx"> typedef EncodedJSValue (JIT_OPERATION *J_JITOperation_ESsiJI)(ExecState*, StructureStubInfo*, EncodedJSValue, UniquedStringImpl*);
</span><del>-typedef EncodedJSValue (JIT_OPERATION *J_JITOperation_ESsiJJI)(ExecState*, StructureStubInfo*, EncodedJSValue, EncodedJSValue, UniquedStringImpl*);
</del><span class="cx"> typedef EncodedJSValue (JIT_OPERATION *J_JITOperation_EZ)(ExecState*, int32_t);
</span><span class="cx"> typedef EncodedJSValue (JIT_OPERATION *J_JITOperation_EZIcfZ)(ExecState*, int32_t, InlineCallFrame*, int32_t);
</span><span class="cx"> typedef EncodedJSValue (JIT_OPERATION *J_JITOperation_EZZ)(ExecState*, int32_t, int32_t);
</span><span class="lines">@@ -338,8 +337,6 @@
</span><span class="cx"> EncodedJSValue JIT_OPERATION operationGetById(ExecState*, StructureStubInfo*, EncodedJSValue, UniquedStringImpl*) WTF_INTERNAL;
</span><span class="cx"> EncodedJSValue JIT_OPERATION operationGetByIdGeneric(ExecState*, EncodedJSValue, UniquedStringImpl*) WTF_INTERNAL;
</span><span class="cx"> EncodedJSValue JIT_OPERATION operationGetByIdOptimize(ExecState*, StructureStubInfo*, EncodedJSValue, UniquedStringImpl*) WTF_INTERNAL;
</span><del>-EncodedJSValue JIT_OPERATION operationGetByIdWithThisGeneric(ExecState*, StructureStubInfo*, EncodedJSValue, EncodedJSValue, UniquedStringImpl*) WTF_INTERNAL;
-EncodedJSValue JIT_OPERATION operationGetByIdWithThisOptimize(ExecState*, StructureStubInfo*, EncodedJSValue, EncodedJSValue, UniquedStringImpl*) WTF_INTERNAL;
</del><span class="cx"> EncodedJSValue JIT_OPERATION operationInOptimize(ExecState*, StructureStubInfo*, JSCell*, UniquedStringImpl*) WTF_INTERNAL;
</span><span class="cx"> EncodedJSValue JIT_OPERATION operationIn(ExecState*, StructureStubInfo*, JSCell*, UniquedStringImpl*) WTF_INTERNAL;
</span><span class="cx"> EncodedJSValue JIT_OPERATION operationGenericIn(ExecState*, JSCell*, EncodedJSValue) WTF_INTERNAL;
</span></span></pre></div>
<a id="trunkSourceJavaScriptCorejitJITPropertyAccesscpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/jit/JITPropertyAccess.cpp (213087 => 213088)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/jit/JITPropertyAccess.cpp        2017-02-27 20:51:43 UTC (rev 213087)
+++ trunk/Source/JavaScriptCore/jit/JITPropertyAccess.cpp        2017-02-27 21:08:38 UTC (rev 213088)
</span><span class="lines">@@ -632,25 +632,8 @@
</span><span class="cx"> 
</span><span class="cx"> void JIT::emit_op_get_by_id_with_this(Instruction* currentInstruction)
</span><span class="cx"> {
</span><del>-    int resultVReg = currentInstruction[1].u.operand;
-    int baseVReg = currentInstruction[2].u.operand;
-    int thisVReg = currentInstruction[3].u.operand;
-    const Identifier* ident = &amp;(m_codeBlock-&gt;identifier(currentInstruction[4].u.operand));
-
-    emitGetVirtualRegister(baseVReg, regT0);
-    emitGetVirtualRegister(thisVReg, regT1);
-    emitJumpSlowCaseIfNotJSCell(regT0, baseVReg);
-    emitJumpSlowCaseIfNotJSCell(regT1, thisVReg);
-
-    JITGetByIdWithThisGenerator gen(
-        m_codeBlock, CodeOrigin(m_bytecodeOffset), CallSiteIndex(m_bytecodeOffset), RegisterSet::stubUnavailableRegisters(),
-        ident-&gt;impl(), JSValueRegs(regT0), JSValueRegs(regT0), JSValueRegs(regT1), AccessType::GetWithThis);
-    gen.generateFastPath(*this);
-    addSlowCase(gen.slowPathJump());
-    m_getByIdsWithThis.append(gen);
-
-    emitValueProfilingSite();
-    emitPutVirtualRegister(resultVReg);
</del><ins>+    JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_get_by_id_with_this);
+    slowPathCall.call();
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> void JIT::emit_op_get_by_val_with_this(Instruction* currentInstruction)
</span><span class="lines">@@ -677,26 +660,6 @@
</span><span class="cx">     gen.reportSlowPathCall(coldPathBegin, call);
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-void JIT::emitSlow_op_get_by_id_with_this(Instruction* currentInstruction, Vector&lt;SlowCaseEntry&gt;::iterator&amp; iter)
-{
-    int resultVReg = currentInstruction[1].u.operand;
-    int baseVReg = currentInstruction[2].u.operand;
-    int thisVReg = currentInstruction[3].u.operand;
-    const Identifier* ident = &amp;(m_codeBlock-&gt;identifier(currentInstruction[4].u.operand));
-
-    linkSlowCaseIfNotJSCell(iter, baseVReg);
-    linkSlowCaseIfNotJSCell(iter, thisVReg);
-    linkSlowCase(iter);
-
-    JITGetByIdWithThisGenerator&amp; gen = m_getByIdsWithThis[m_getByIdWithThisIndex++];
-    
-    Label coldPathBegin = label();
-    
-    Call call = callOperation(WithProfile, operationGetByIdWithThisOptimize, resultVReg, gen.stubInfo(), regT0, regT1, ident-&gt;impl());
-
-    gen.reportSlowPathCall(coldPathBegin, call);
-}
-
</del><span class="cx"> void JIT::emit_op_put_by_id(Instruction* currentInstruction)
</span><span class="cx"> {
</span><span class="cx">     int baseVReg = currentInstruction[1].u.operand;
</span></span></pre></div>
<a id="trunkSourceJavaScriptCorejitJITPropertyAccess32_64cpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/jit/JITPropertyAccess32_64.cpp (213087 => 213088)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/jit/JITPropertyAccess32_64.cpp        2017-02-27 20:51:43 UTC (rev 213087)
+++ trunk/Source/JavaScriptCore/jit/JITPropertyAccess32_64.cpp        2017-02-27 21:08:38 UTC (rev 213088)
</span><span class="lines">@@ -663,49 +663,6 @@
</span><span class="cx">     gen.reportSlowPathCall(coldPathBegin, call);
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-void JIT::emit_op_get_by_id_with_this(Instruction* currentInstruction)
-{
-    int dst = currentInstruction[1].u.operand;
-    int base = currentInstruction[2].u.operand;
-    int thisVReg = currentInstruction[3].u.operand;
-    const Identifier* ident = &amp;(m_codeBlock-&gt;identifier(currentInstruction[4].u.operand));
-    
-    emitLoad(base, regT1, regT0);
-    emitLoad(thisVReg, regT4, regT3);
-    emitJumpSlowCaseIfNotJSCell(base, regT1);
-    emitJumpSlowCaseIfNotJSCell(thisVReg, regT4);
-
-    JITGetByIdWithThisGenerator gen(
-        m_codeBlock, CodeOrigin(m_bytecodeOffset), CallSiteIndex(currentInstruction), RegisterSet::stubUnavailableRegisters(),
-        ident-&gt;impl(), JSValueRegs(regT1, regT0), JSValueRegs::payloadOnly(regT0), JSValueRegs(regT4, regT3), AccessType::GetWithThis);
-    gen.generateFastPath(*this);
-    addSlowCase(gen.slowPathJump());
-    m_getByIdsWithThis.append(gen);
-
-    emitValueProfilingSite();
-    emitStore(dst, regT1, regT0);
-}
-
-void JIT::emitSlow_op_get_by_id_with_this(Instruction* currentInstruction, Vector&lt;SlowCaseEntry&gt;::iterator&amp; iter)
-{
-    int resultVReg = currentInstruction[1].u.operand;
-    int baseVReg = currentInstruction[2].u.operand;
-    int thisVReg = currentInstruction[3].u.operand;
-    const Identifier* ident = &amp;(m_codeBlock-&gt;identifier(currentInstruction[4].u.operand));
-
-    linkSlowCaseIfNotJSCell(iter, baseVReg);
-    linkSlowCaseIfNotJSCell(iter, thisVReg);
-    linkSlowCase(iter);
-
-    JITGetByIdWithThisGenerator&amp; gen = m_getByIdsWithThis[m_getByIdWithThisIndex++];
-    
-    Label coldPathBegin = label();
-    
-    Call call = callOperation(WithProfile, operationGetByIdWithThisOptimize, resultVReg, gen.stubInfo(), regT1, regT0, regT4, regT3, ident-&gt;impl());
-    
-    gen.reportSlowPathCall(coldPathBegin, call);
-}
-
</del><span class="cx"> void JIT::emit_op_put_by_id(Instruction* currentInstruction)
</span><span class="cx"> {
</span><span class="cx">     // In order to be able to patch both the Structure, and the object offset, we store one pointer,
</span><span class="lines">@@ -1209,6 +1166,12 @@
</span><span class="cx">     store32(regT2, Address(regT0, DirectArguments::storageOffset() + index * sizeof(WriteBarrier&lt;Unknown&gt;) + PayloadOffset));
</span><span class="cx"> }
</span><span class="cx"> 
</span><ins>+void JIT::emit_op_get_by_id_with_this(Instruction* currentInstruction)
+{
+    JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_get_by_id_with_this);
+    slowPathCall.call();
+}
+
</ins><span class="cx"> void JIT::emit_op_get_by_val_with_this(Instruction* currentInstruction)
</span><span class="cx"> {
</span><span class="cx">     JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_get_by_val_with_this);
</span></span></pre></div>
<a id="trunkSourceJavaScriptCorejitRepatchcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/jit/Repatch.cpp (213087 => 213088)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/jit/Repatch.cpp        2017-02-27 20:51:43 UTC (rev 213087)
+++ trunk/Source/JavaScriptCore/jit/Repatch.cpp        2017-02-27 21:08:38 UTC (rev 213088)
</span><span class="lines">@@ -139,21 +139,17 @@
</span><span class="cx"> #endif
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-inline FunctionPtr appropriateOptimizingGetByIdFunction(GetByIDKind kind)
</del><ins>+inline J_JITOperation_ESsiJI appropriateOptimizingGetByIdFunction(GetByIDKind kind)
</ins><span class="cx"> {
</span><span class="cx">     if (kind == GetByIDKind::Normal)
</span><span class="cx">         return operationGetByIdOptimize;
</span><del>-    else if (kind == GetByIDKind::WithThis)
-        return operationGetByIdWithThisOptimize;
</del><span class="cx">     return operationTryGetByIdOptimize;
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-inline FunctionPtr appropriateGenericGetByIdFunction(GetByIDKind kind)
</del><ins>+inline J_JITOperation_ESsiJI appropriateGenericGetByIdFunction(GetByIDKind kind)
</ins><span class="cx"> {
</span><span class="cx">     if (kind == GetByIDKind::Normal)
</span><span class="cx">         return operationGetById;
</span><del>-    else if (kind == GetByIDKind::WithThis)
-        return operationGetByIdWithThisGeneric;
</del><span class="cx">     return operationTryGetById;
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="lines">@@ -308,10 +304,6 @@
</span><span class="cx">                 else
</span><span class="cx">                     type = AccessCase::CustomValueGetter;
</span><span class="cx"> 
</span><del>-                // we don't emit IC for DOMJIT when op is get_by_id_with_this
-                if (Options::useDOMJIT() &amp;&amp; kind == GetByIDKind::WithThis &amp;&amp; type == AccessCase::CustomAccessorGetter &amp;&amp; domJIT)
-                    return GiveUpOnCache;
-
</del><span class="cx">                 newCase = GetterSetterAccessCase::create(
</span><span class="cx">                     vm, codeBlock, type, offset, structure, conditionSet, loadTargetFromProxy,
</span><span class="cx">                     slot.watchpointSet(), slot.isCacheableCustom() ? slot.customGetter() : nullptr,
</span></span></pre></div>
<a id="trunkSourceJavaScriptCorejitRepatchh"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/jit/Repatch.h (213087 => 213088)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/jit/Repatch.h        2017-02-27 20:51:43 UTC (rev 213087)
+++ trunk/Source/JavaScriptCore/jit/Repatch.h        2017-02-27 21:08:38 UTC (rev 213088)
</span><span class="lines">@@ -36,8 +36,7 @@
</span><span class="cx"> 
</span><span class="cx"> enum class GetByIDKind {
</span><span class="cx">     Normal,
</span><del>-    Try,
-    WithThis
</del><ins>+    Try
</ins><span class="cx"> };
</span><span class="cx"> 
</span><span class="cx"> void repatchGetByID(ExecState*, JSValue, const Identifier&amp;, const PropertySlot&amp;, StructureStubInfo&amp;, GetByIDKind);
</span></span></pre></div>
<a id="trunkSourceJavaScriptCorejsccpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/jsc.cpp (213087 => 213088)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/jsc.cpp        2017-02-27 20:51:43 UTC (rev 213087)
+++ trunk/Source/JavaScriptCore/jsc.cpp        2017-02-27 21:08:38 UTC (rev 213088)
</span><span class="lines">@@ -369,12 +369,6 @@
</span><span class="cx">             slot.setCacheableCustom(thisObject, DontDelete | ReadOnly | DontEnum, thisObject-&gt;customGetter);
</span><span class="cx">             return true;
</span><span class="cx">         }
</span><del>-        
-        if (propertyName == PropertyName(Identifier::fromString(exec, &quot;customGetterAccessor&quot;))) {
-            slot.setCacheableCustom(thisObject, DontDelete | ReadOnly | DontEnum | CustomAccessor, thisObject-&gt;customGetterAcessor);
-            return true;
-        }
-        
</del><span class="cx">         return JSObject::getOwnPropertySlot(thisObject, exec, propertyName, slot);
</span><span class="cx">     }
</span><span class="cx"> 
</span><span class="lines">@@ -392,20 +386,6 @@
</span><span class="cx">             return throwVMTypeError(exec, scope);
</span><span class="cx">         return JSValue::encode(jsNumber(100));
</span><span class="cx">     }
</span><del>-    
-    static EncodedJSValue customGetterAcessor(ExecState* exec, EncodedJSValue thisValue, PropertyName)
-    {
-        VM&amp; vm = exec-&gt;vm();
-        auto scope = DECLARE_THROW_SCOPE(vm);
-        
-        JSObject* thisObject = jsDynamicCast&lt;JSObject*&gt;(vm, JSValue::decode(thisValue));
-        if (!thisObject)
-            return throwVMTypeError(exec, scope);
-        bool shouldThrow = thisObject-&gt;get(exec, PropertyName(Identifier::fromString(exec, &quot;shouldThrow&quot;))).toBoolean(exec);
-        if (shouldThrow)
-            return throwVMTypeError(exec, scope);
-        return JSValue::encode(jsNumber(100));
-    }
</del><span class="cx"> };
</span><span class="cx"> 
</span><span class="cx"> class RuntimeArray : public JSArray {
</span></span></pre>
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