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<title>[194976] trunk/Source/JavaScriptCore</title>
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<div id="msg">
<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/194976">194976</a></dd>
<dt>Author</dt> <dd>cdumez@apple.com</dd>
<dt>Date</dt> <dd>2016-01-13 12:52:46 -0800 (Wed, 13 Jan 2016)</dd>
</dl>

<h3>Log Message</h3>
<pre>Unreviewed, rolling out <a href="http://trac.webkit.org/projects/webkit/changeset/194969">r194969</a>.
https://bugs.webkit.org/show_bug.cgi?id=153075

This change broke the iOS build (Requested by ryanhaddad on
#webkit).

Reverted changeset:

&quot;[JSC] Legalize Memory Offsets for ARM64 before lowering to
Air&quot;
https://bugs.webkit.org/show_bug.cgi?id=153065
http://trac.webkit.org/changeset/194969

Patch by Commit Queue &lt;commit-queue@webkit.org&gt; on 2016-01-13</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceJavaScriptCoreChangeLog">trunk/Source/JavaScriptCore/ChangeLog</a></li>
<li><a href="#trunkSourceJavaScriptCoreJavaScriptCorexcodeprojprojectpbxproj">trunk/Source/JavaScriptCore/JavaScriptCore.xcodeproj/project.pbxproj</a></li>
<li><a href="#trunkSourceJavaScriptCoreb3B3Generatecpp">trunk/Source/JavaScriptCore/b3/B3Generate.cpp</a></li>
<li><a href="#trunkSourceJavaScriptCoreb3B3LowerToAircpp">trunk/Source/JavaScriptCore/b3/B3LowerToAir.cpp</a></li>
<li><a href="#trunkSourceJavaScriptCoreb3testb3cpp">trunk/Source/JavaScriptCore/b3/testb3.cpp</a></li>
</ul>

<h3>Removed Paths</h3>
<ul>
<li><a href="#trunkSourceJavaScriptCoreb3B3LegalizeMemoryOffsetscpp">trunk/Source/JavaScriptCore/b3/B3LegalizeMemoryOffsets.cpp</a></li>
<li><a href="#trunkSourceJavaScriptCoreb3B3LegalizeMemoryOffsetsh">trunk/Source/JavaScriptCore/b3/B3LegalizeMemoryOffsets.h</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkSourceJavaScriptCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/ChangeLog (194975 => 194976)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/ChangeLog        2016-01-13 20:17:53 UTC (rev 194975)
+++ trunk/Source/JavaScriptCore/ChangeLog        2016-01-13 20:52:46 UTC (rev 194976)
</span><span class="lines">@@ -1,3 +1,18 @@
</span><ins>+2016-01-13  Commit Queue  &lt;commit-queue@webkit.org&gt;
+
+        Unreviewed, rolling out r194969.
+        https://bugs.webkit.org/show_bug.cgi?id=153075
+
+        This change broke the iOS build (Requested by ryanhaddad on
+        #webkit).
+
+        Reverted changeset:
+
+        &quot;[JSC] Legalize Memory Offsets for ARM64 before lowering to
+        Air&quot;
+        https://bugs.webkit.org/show_bug.cgi?id=153065
+        http://trac.webkit.org/changeset/194969
+
</ins><span class="cx"> 2016-01-13  Benjamin Poulain  &lt;bpoulain@apple.com&gt;
</span><span class="cx"> 
</span><span class="cx">         [JSC] Legalize Memory Offsets for ARM64 before lowering to Air
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoreJavaScriptCorexcodeprojprojectpbxproj"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/JavaScriptCore.xcodeproj/project.pbxproj (194975 => 194976)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/JavaScriptCore.xcodeproj/project.pbxproj        2016-01-13 20:17:53 UTC (rev 194975)
+++ trunk/Source/JavaScriptCore/JavaScriptCore.xcodeproj/project.pbxproj        2016-01-13 20:52:46 UTC (rev 194976)
</span><span class="lines">@@ -1152,8 +1152,6 @@
</span><span class="cx">                 43422A631C158E6D00E2EB98 /* B3ConstFloatValue.h in Headers */ = {isa = PBXBuildFile; fileRef = 43422A611C15871B00E2EB98 /* B3ConstFloatValue.h */; };
</span><span class="cx">                 43422A661C16267500E2EB98 /* B3ReduceDoubleToFloat.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 43422A641C16221E00E2EB98 /* B3ReduceDoubleToFloat.cpp */; };
</span><span class="cx">                 43422A671C16267800E2EB98 /* B3ReduceDoubleToFloat.h in Headers */ = {isa = PBXBuildFile; fileRef = 43422A651C16221E00E2EB98 /* B3ReduceDoubleToFloat.h */; };
</span><del>-                436E54531C468E7400B5AF73 /* B3LegalizeMemoryOffsets.h in Headers */ = {isa = PBXBuildFile; fileRef = 436E54521C468E5F00B5AF73 /* B3LegalizeMemoryOffsets.h */; };
-                436E54541C468E7700B5AF73 /* B3LegalizeMemoryOffsets.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 436E54511C468E5F00B5AF73 /* B3LegalizeMemoryOffsets.cpp */; };
</del><span class="cx">                 43AB26C61C1A535900D82AE6 /* B3MathExtras.h in Headers */ = {isa = PBXBuildFile; fileRef = 43AB26C51C1A52F700D82AE6 /* B3MathExtras.h */; };
</span><span class="cx">                 43AB26C71C1A535C00D82AE6 /* B3MathExtras.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 43AB26C41C1A52F700D82AE6 /* B3MathExtras.cpp */; };
</span><span class="cx">                 43C392AB1C3BEB0500241F53 /* AssemblerCommon.h in Headers */ = {isa = PBXBuildFile; fileRef = 43C392AA1C3BEB0000241F53 /* AssemblerCommon.h */; settings = {ATTRIBUTES = (Private, ); }; };
</span><span class="lines">@@ -3262,8 +3260,6 @@
</span><span class="cx">                 43422A611C15871B00E2EB98 /* B3ConstFloatValue.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = B3ConstFloatValue.h; path = b3/B3ConstFloatValue.h; sourceTree = &quot;&lt;group&gt;&quot;; };
</span><span class="cx">                 43422A641C16221E00E2EB98 /* B3ReduceDoubleToFloat.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = B3ReduceDoubleToFloat.cpp; path = b3/B3ReduceDoubleToFloat.cpp; sourceTree = &quot;&lt;group&gt;&quot;; };
</span><span class="cx">                 43422A651C16221E00E2EB98 /* B3ReduceDoubleToFloat.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = B3ReduceDoubleToFloat.h; path = b3/B3ReduceDoubleToFloat.h; sourceTree = &quot;&lt;group&gt;&quot;; };
</span><del>-                436E54511C468E5F00B5AF73 /* B3LegalizeMemoryOffsets.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = B3LegalizeMemoryOffsets.cpp; path = b3/B3LegalizeMemoryOffsets.cpp; sourceTree = &quot;&lt;group&gt;&quot;; };
-                436E54521C468E5F00B5AF73 /* B3LegalizeMemoryOffsets.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = B3LegalizeMemoryOffsets.h; path = b3/B3LegalizeMemoryOffsets.h; sourceTree = &quot;&lt;group&gt;&quot;; };
</del><span class="cx">                 43AB26C41C1A52F700D82AE6 /* B3MathExtras.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = B3MathExtras.cpp; path = b3/B3MathExtras.cpp; sourceTree = &quot;&lt;group&gt;&quot;; };
</span><span class="cx">                 43AB26C51C1A52F700D82AE6 /* B3MathExtras.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = B3MathExtras.h; path = b3/B3MathExtras.h; sourceTree = &quot;&lt;group&gt;&quot;; };
</span><span class="cx">                 43C392AA1C3BEB0000241F53 /* AssemblerCommon.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = AssemblerCommon.h; sourceTree = &quot;&lt;group&gt;&quot;; };
</span><span class="lines">@@ -3376,8 +3372,8 @@
</span><span class="cx">                 7013CA8A1B491A9400CAE613 /* JSJob.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = JSJob.h; sourceTree = &quot;&lt;group&gt;&quot;; };
</span><span class="cx">                 7035587C1C418419004BD7BF /* MapPrototype.js */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.javascript; path = MapPrototype.js; sourceTree = &quot;&lt;group&gt;&quot;; };
</span><span class="cx">                 7035587D1C418419004BD7BF /* SetPrototype.js */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.javascript; path = SetPrototype.js; sourceTree = &quot;&lt;group&gt;&quot;; };
</span><del>-                7035587E1C418458004BD7BF /* MapPrototype.lut.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MapPrototype.lut.h; sourceTree = &quot;&lt;group&gt;&quot;; };
-                7035587F1C418458004BD7BF /* SetPrototype.lut.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = SetPrototype.lut.h; sourceTree = &quot;&lt;group&gt;&quot;; };
</del><ins>+                7035587E1C418458004BD7BF /* MapPrototype.lut.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = MapPrototype.lut.h; path = MapPrototype.lut.h; sourceTree = &quot;&lt;group&gt;&quot;; };
+                7035587F1C418458004BD7BF /* SetPrototype.lut.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = SetPrototype.lut.h; path = SetPrototype.lut.h; sourceTree = &quot;&lt;group&gt;&quot;; };
</ins><span class="cx">                 704FD35305697E6D003DBED9 /* BooleanObject.h */ = {isa = PBXFileReference; fileEncoding = 30; indentWidth = 4; lastKnownFileType = sourcecode.c.h; path = BooleanObject.h; sourceTree = &quot;&lt;group&gt;&quot;; tabWidth = 8; };
</span><span class="cx">                 705B41A31A6E501E00716757 /* Symbol.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = Symbol.cpp; sourceTree = &quot;&lt;group&gt;&quot;; };
</span><span class="cx">                 705B41A41A6E501E00716757 /* Symbol.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = Symbol.h; sourceTree = &quot;&lt;group&gt;&quot;; };
</span><span class="lines">@@ -4714,8 +4710,6 @@
</span><span class="cx">                                 0FEC85B41BE1462F0080FF74 /* B3InsertionSet.cpp */,
</span><span class="cx">                                 0FEC85B51BE1462F0080FF74 /* B3InsertionSet.h */,
</span><span class="cx">                                 0FEC85B61BE1462F0080FF74 /* B3InsertionSetInlines.h */,
</span><del>-                                436E54511C468E5F00B5AF73 /* B3LegalizeMemoryOffsets.cpp */,
-                                436E54521C468E5F00B5AF73 /* B3LegalizeMemoryOffsets.h */,
</del><span class="cx">                                 0F338E191BF286EA0013C88F /* B3LowerMacros.cpp */,
</span><span class="cx">                                 0F338E1A1BF286EA0013C88F /* B3LowerMacros.h */,
</span><span class="cx">                                 4319DA011C1BE3C1001D260B /* B3LowerMacrosAfterOptimizations.cpp */,
</span><span class="lines">@@ -7943,7 +7937,6 @@
</span><span class="cx">                                 BCDE3AB80E6C82F5001453A7 /* Structure.h in Headers */,
</span><span class="cx">                                 7E4EE7090EBB7963005934AA /* StructureChain.h in Headers */,
</span><span class="cx">                                 2AAAA31218BD49D100394CC8 /* StructureIDBlob.h in Headers */,
</span><del>-                                436E54531C468E7400B5AF73 /* B3LegalizeMemoryOffsets.h in Headers */,
</del><span class="cx">                                 2AF7382D18BBBF92008A5A37 /* StructureIDTable.h in Headers */,
</span><span class="cx">                                 0FD2C92416D01EE900C7803F /* StructureInlines.h in Headers */,
</span><span class="cx">                                 C2FE18A416BAEC4000AF3061 /* StructureRareData.h in Headers */,
</span><span class="lines">@@ -8621,7 +8614,6 @@
</span><span class="cx">                                 0FEC85091BDACDAC0080FF74 /* B3Common.cpp in Sources */,
</span><span class="cx">                                 0FEC850B1BDACDAC0080FF74 /* B3Commutativity.cpp in Sources */,
</span><span class="cx">                                 0FEC850D1BDACDAC0080FF74 /* B3Const32Value.cpp in Sources */,
</span><del>-                                436E54541C468E7700B5AF73 /* B3LegalizeMemoryOffsets.cpp in Sources */,
</del><span class="cx">                                 0FEC850F1BDACDAC0080FF74 /* B3Const64Value.cpp in Sources */,
</span><span class="cx">                                 0FEC85111BDACDAC0080FF74 /* B3ConstDoubleValue.cpp in Sources */,
</span><span class="cx">                                 0FEC85131BDACDAC0080FF74 /* B3ControlValue.cpp in Sources */,
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoreb3B3Generatecpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/b3/B3Generate.cpp (194975 => 194976)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/b3/B3Generate.cpp        2016-01-13 20:17:53 UTC (rev 194975)
+++ trunk/Source/JavaScriptCore/b3/B3Generate.cpp        2016-01-13 20:52:46 UTC (rev 194976)
</span><span class="lines">@@ -32,7 +32,6 @@
</span><span class="cx"> #include &quot;AirGenerate.h&quot;
</span><span class="cx"> #include &quot;AirInstInlines.h&quot;
</span><span class="cx"> #include &quot;B3Common.h&quot;
</span><del>-#include &quot;B3LegalizeMemoryOffsets.h&quot;
</del><span class="cx"> #include &quot;B3LowerMacros.h&quot;
</span><span class="cx"> #include &quot;B3LowerMacrosAfterOptimizations.h&quot;
</span><span class="cx"> #include &quot;B3LowerToAir.h&quot;
</span><span class="lines">@@ -86,8 +85,6 @@
</span><span class="cx"> 
</span><span class="cx">     lowerMacrosAfterOptimizations(procedure);
</span><span class="cx"> 
</span><del>-    legalizeMemoryOffsets(procedure);
-
</del><span class="cx">     moveConstants(procedure);
</span><span class="cx"> 
</span><span class="cx">     if (shouldValidateIR())
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoreb3B3LegalizeMemoryOffsetscpp"></a>
<div class="delfile"><h4>Deleted: trunk/Source/JavaScriptCore/b3/B3LegalizeMemoryOffsets.cpp (194975 => 194976)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/b3/B3LegalizeMemoryOffsets.cpp        2016-01-13 20:17:53 UTC (rev 194975)
+++ trunk/Source/JavaScriptCore/b3/B3LegalizeMemoryOffsets.cpp        2016-01-13 20:52:46 UTC (rev 194976)
</span><span class="lines">@@ -1,92 +0,0 @@
</span><del>-/*
- * Copyright (C) 2015 Apple Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include &quot;config.h&quot;
-#include &quot;B3LegalizeMemoryOffsets.h&quot;
-
-#if ENABLE(B3_JIT)
-
-#include &quot;AirArg.h&quot;
-#include &quot;B3InsertionSetInlines.h&quot;
-#include &quot;B3MemoryValue.h&quot;
-#include &quot;B3PhaseScope.h&quot;
-#include &quot;B3ProcedureInlines.h&quot;
-
-namespace JSC { namespace B3 {
-
-namespace {
-
-class LegalizeMemoryOffsets {
-public:
-    LegalizeMemoryOffsets(Procedure&amp; proc)
-        : m_proc(proc)
-        , m_insertionSet(proc)
-    {
-    }
-
-    void run()
-    {
-        if (!isARM64())
-            return;
-
-        for (BasicBlock* block : m_proc) {
-            for (unsigned index = 0; index &lt; block-&gt;size(); ++index) {
-                MemoryValue* memoryValue = block-&gt;at(index)-&gt;as&lt;MemoryValue&gt;();
-                if (!memoryValue)
-                    continue;
-
-                int32_t offset = memoryValue-&gt;offset();
-                Air::Arg::Width width = Air::Arg::widthForBytes(memoryValue-&gt;accessByteSize());
-                if (!Air::Arg::isValidAddrForm(offset, width)) {
-                    Value* base = memoryValue-&gt;lastChild();
-                    Value* offsetValue = m_insertionSet.insertIntConstant(index, memoryValue-&gt;origin(), pointerType(), offset);
-                    Value* resolvedAddress = m_proc.add&lt;Value&gt;(Add, memoryValue-&gt;origin(), base, offsetValue);
-                    m_insertionSet.insertValue(index, resolvedAddress);
-
-                    memoryValue-&gt;lastChild() = resolvedAddress;
-                    memoryValue-&gt;setOffset(0);
-                }
-            }
-            m_insertionSet.execute(block);
-        }
-    }
-
-    Procedure&amp; m_proc;
-    InsertionSet m_insertionSet;
-};
-
-} // anonymous namespace
-
-void legalizeMemoryOffsets(Procedure&amp; proc)
-{
-    PhaseScope phaseScope(proc, &quot;legalizeMemoryOffsets&quot;);
-    LegalizeMemoryOffsets legalizeMemoryOffsets(proc);
-    legalizeMemoryOffsets.run();
-}
-
-} } // namespace JSC::B3
-
-#endif // ENABLE(B3_JIT)
-
</del></span></pre></div>
<a id="trunkSourceJavaScriptCoreb3B3LegalizeMemoryOffsetsh"></a>
<div class="delfile"><h4>Deleted: trunk/Source/JavaScriptCore/b3/B3LegalizeMemoryOffsets.h (194975 => 194976)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/b3/B3LegalizeMemoryOffsets.h        2016-01-13 20:17:53 UTC (rev 194975)
+++ trunk/Source/JavaScriptCore/b3/B3LegalizeMemoryOffsets.h        2016-01-13 20:52:46 UTC (rev 194976)
</span><span class="lines">@@ -1,44 +0,0 @@
</span><del>-/*
- * Copyright (C) 2015 Apple Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef B3LegalizeMemoryOffsets_h
-#define B3LegalizeMemoryOffsets_h
-
-#if ENABLE(B3_JIT)
-
-namespace JSC { namespace B3 {
-
-class Procedure;
-
-// If the offsets of a MemoryValue cannot be represented in the target instruction set,
-// compute it explicitly.
-void legalizeMemoryOffsets(Procedure&amp;);
-
-} } // namespace JSC::B3
-
-#endif // ENABLE(B3_JIT)
-
-#endif // B3LegalizeMemoryOffsets_h
-
</del></span></pre></div>
<a id="trunkSourceJavaScriptCoreb3B3LowerToAircpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/b3/B3LowerToAir.cpp (194975 => 194976)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/b3/B3LowerToAir.cpp        2016-01-13 20:17:53 UTC (rev 194975)
+++ trunk/Source/JavaScriptCore/b3/B3LowerToAir.cpp        2016-01-13 20:52:46 UTC (rev 194976)
</span><span class="lines">@@ -357,6 +357,10 @@
</span><span class="cx">     // This turns the given operand into an address.
</span><span class="cx">     Arg effectiveAddr(Value* address, int32_t offset, Arg::Width width)
</span><span class="cx">     {
</span><ins>+        // B3 allows any memory operation to have a 32-bit offset. That's not how some architectures
+        // work. We solve this by requiring a just-before-lowering phase that legalizes offsets.
+        // FIXME: Implement such a legalization phase.
+        // https://bugs.webkit.org/show_bug.cgi?id=152530
</ins><span class="cx">         ASSERT(Arg::isValidAddrForm(offset, width));
</span><span class="cx"> 
</span><span class="cx">         auto fallback = [&amp;] () -&gt; Arg {
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoreb3testb3cpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/b3/testb3.cpp (194975 => 194976)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/b3/testb3.cpp        2016-01-13 20:17:53 UTC (rev 194975)
+++ trunk/Source/JavaScriptCore/b3/testb3.cpp        2016-01-13 20:52:46 UTC (rev 194976)
</span><span class="lines">@@ -136,77 +136,6 @@
</span><span class="cx">     CHECK(compileAndRun&lt;int&gt;(proc) == 42);
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-void testLoadWithOffsetImpl(int32_t offset64, int32_t offset32)
-{
-    {
-        Procedure proc;
-        BasicBlock* root = proc.addBlock();
-        int64_t x = -42;
-        Value* base = root-&gt;appendNew&lt;ArgumentRegValue&gt;(proc, Origin(), GPRInfo::argumentGPR0);
-        root-&gt;appendNew&lt;ControlValue&gt;(
-            proc, Return, Origin(),
-            root-&gt;appendNew&lt;MemoryValue&gt;(
-                proc, Load, Int64, Origin(),
-                base,
-                offset64));
-
-        char* address = reinterpret_cast&lt;char*&gt;(&amp;x) - offset64;
-        CHECK(compileAndRun&lt;int64_t&gt;(proc, address) == -42);
-    }
-    {
-        Procedure proc;
-        BasicBlock* root = proc.addBlock();
-        int32_t x = -42;
-        Value* base = root-&gt;appendNew&lt;ArgumentRegValue&gt;(proc, Origin(), GPRInfo::argumentGPR0);
-        root-&gt;appendNew&lt;ControlValue&gt;(
-            proc, Return, Origin(),
-            root-&gt;appendNew&lt;MemoryValue&gt;(
-                proc, Load, Int32, Origin(),
-                base,
-                offset32));
-
-        char* address = reinterpret_cast&lt;char*&gt;(&amp;x) - offset32;
-        CHECK(compileAndRun&lt;int32_t&gt;(proc, address) == -42);
-    }
-}
-
-void testLoadOffsetImm9Max()
-{
-    testLoadWithOffsetImpl(255, 255);
-}
-
-void testLoadOffsetImm9MaxPlusOne()
-{
-    testLoadWithOffsetImpl(256, 256);
-}
-
-void testLoadOffsetImm9MaxPlusTwo()
-{
-    testLoadWithOffsetImpl(257, 257);
-}
-
-void testLoadOffsetImm9Min()
-{
-    testLoadWithOffsetImpl(-256, -256);
-}
-
-void testLoadOffsetImm9MinMinusOne()
-{
-    testLoadWithOffsetImpl(-257, -257);
-}
-
-void testLoadOffsetScaledUnsignedImm12Max()
-{
-    testLoadWithOffsetImpl(32760, 16380);
-}
-
-void testLoadOffsetScaledUnsignedOverImm12Max()
-{
-    testLoadWithOffsetImpl(32760, 32760);
-    testLoadWithOffsetImpl(32761, 16381);
-    testLoadWithOffsetImpl(32768, 16384);
-}
-
</del><span class="cx"> void testArg(int argument)
</span><span class="cx"> {
</span><span class="cx">     Procedure proc;
</span><span class="lines">@@ -9359,13 +9288,6 @@
</span><span class="cx"> 
</span><span class="cx">     RUN(test42());
</span><span class="cx">     RUN(testLoad42());
</span><del>-    RUN(testLoadOffsetImm9Max());
-    RUN(testLoadOffsetImm9MaxPlusOne());
-    RUN(testLoadOffsetImm9MaxPlusTwo());
-    RUN(testLoadOffsetImm9Min());
-    RUN(testLoadOffsetImm9MinMinusOne());
-    RUN(testLoadOffsetScaledUnsignedImm12Max());
-    RUN(testLoadOffsetScaledUnsignedOverImm12Max());
</del><span class="cx">     RUN(testArg(43));
</span><span class="cx">     RUN(testReturnConst64(5));
</span><span class="cx">     RUN(testReturnConst64(-42));
</span></span></pre>
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