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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/197329">197329</a></dd>
<dt>Author</dt> <dd>carlosgc@webkit.org</dd>
<dt>Date</dt> <dd>2016-02-29 02:23:51 -0800 (Mon, 29 Feb 2016)</dd>
</dl>
<h3>Log Message</h3>
<pre>Merge <a href="http://trac.webkit.org/projects/webkit/changeset/197186">r197186</a> - [JSC] Add32(Imm, Tmp, Tmp) does not ZDef the destination if Imm is zero
https://bugs.webkit.org/show_bug.cgi?id=154704
Patch by Benjamin Poulain <bpoulain@apple.com> on 2016-02-26
Reviewed by Geoffrey Garen.
If the Imm is zero, we should still zero the top bits
to match the definition in AirOpcodes.
* assembler/MacroAssemblerX86Common.h:
(JSC::MacroAssemblerX86Common::add32):
* b3/testb3.cpp:</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#releasesWebKitGTKwebkit212SourceJavaScriptCoreChangeLog">releases/WebKitGTK/webkit-2.12/Source/JavaScriptCore/ChangeLog</a></li>
<li><a href="#releasesWebKitGTKwebkit212SourceJavaScriptCoreassemblerMacroAssemblerX86Commonh">releases/WebKitGTK/webkit-2.12/Source/JavaScriptCore/assembler/MacroAssemblerX86Common.h</a></li>
<li><a href="#releasesWebKitGTKwebkit212SourceJavaScriptCoreb3testb3cpp">releases/WebKitGTK/webkit-2.12/Source/JavaScriptCore/b3/testb3.cpp</a></li>
</ul>
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<div id="patch">
<h3>Diff</h3>
<a id="releasesWebKitGTKwebkit212SourceJavaScriptCoreChangeLog"></a>
<div class="modfile"><h4>Modified: releases/WebKitGTK/webkit-2.12/Source/JavaScriptCore/ChangeLog (197328 => 197329)</h4>
<pre class="diff"><span>
<span class="info">--- releases/WebKitGTK/webkit-2.12/Source/JavaScriptCore/ChangeLog 2016-02-29 10:08:38 UTC (rev 197328)
+++ releases/WebKitGTK/webkit-2.12/Source/JavaScriptCore/ChangeLog 2016-02-29 10:23:51 UTC (rev 197329)
</span><span class="lines">@@ -1,3 +1,17 @@
</span><ins>+2016-02-26 Benjamin Poulain <bpoulain@apple.com>
+
+ [JSC] Add32(Imm, Tmp, Tmp) does not ZDef the destination if Imm is zero
+ https://bugs.webkit.org/show_bug.cgi?id=154704
+
+ Reviewed by Geoffrey Garen.
+
+ If the Imm is zero, we should still zero the top bits
+ to match the definition in AirOpcodes.
+
+ * assembler/MacroAssemblerX86Common.h:
+ (JSC::MacroAssemblerX86Common::add32):
+ * b3/testb3.cpp:
+
</ins><span class="cx"> 2016-02-26 Yusuke Suzuki <utatane.tea@gmail.com>
</span><span class="cx">
</span><span class="cx"> [DFG] Drop unnecessary proved type branch in ToPrimitive
</span></span></pre></div>
<a id="releasesWebKitGTKwebkit212SourceJavaScriptCoreassemblerMacroAssemblerX86Commonh"></a>
<div class="modfile"><h4>Modified: releases/WebKitGTK/webkit-2.12/Source/JavaScriptCore/assembler/MacroAssemblerX86Common.h (197328 => 197329)</h4>
<pre class="diff"><span>
<span class="info">--- releases/WebKitGTK/webkit-2.12/Source/JavaScriptCore/assembler/MacroAssemblerX86Common.h 2016-02-29 10:08:38 UTC (rev 197328)
+++ releases/WebKitGTK/webkit-2.12/Source/JavaScriptCore/assembler/MacroAssemblerX86Common.h 2016-02-29 10:23:51 UTC (rev 197329)
</span><span class="lines">@@ -198,7 +198,7 @@
</span><span class="cx"> void add32(TrustedImm32 imm, RegisterID src, RegisterID dest)
</span><span class="cx"> {
</span><span class="cx"> if (!imm.m_value) {
</span><del>- move(src, dest);
</del><ins>+ zeroExtend32ToPtr(src, dest);
</ins><span class="cx"> return;
</span><span class="cx"> }
</span><span class="cx">
</span></span></pre></div>
<a id="releasesWebKitGTKwebkit212SourceJavaScriptCoreb3testb3cpp"></a>
<div class="modfile"><h4>Modified: releases/WebKitGTK/webkit-2.12/Source/JavaScriptCore/b3/testb3.cpp (197328 => 197329)</h4>
<pre class="diff"><span>
<span class="info">--- releases/WebKitGTK/webkit-2.12/Source/JavaScriptCore/b3/testb3.cpp 2016-02-29 10:08:38 UTC (rev 197328)
+++ releases/WebKitGTK/webkit-2.12/Source/JavaScriptCore/b3/testb3.cpp 2016-02-29 10:23:51 UTC (rev 197329)
</span><span class="lines">@@ -412,6 +412,25 @@
</span><span class="cx"> CHECK(inputOutput == a + b);
</span><span class="cx"> }
</span><span class="cx">
</span><ins>+void testAddArgZeroImmZDef()
+{
+ Procedure proc;
+ BasicBlock* root = proc.addBlock();
+ Value* arg = root->appendNew<Value>(
+ proc, Trunc, Origin(),
+ root->appendNew<ArgumentRegValue>(proc, Origin(), GPRInfo::argumentGPR0));
+ Value* constZero = root->appendNew<Const32Value>(proc, Origin(), 0);
+ root->appendNew<ControlValue>(
+ proc, Return, Origin(),
+ root->appendNew<Value>(
+ proc, Add, Origin(),
+ arg,
+ constZero));
+
+ auto code = compile(proc, 0);
+ CHECK(invoke<int64_t>(*code, 0x0123456789abcdef) == 0x89abcdef);
+}
+
</ins><span class="cx"> void testAddLoadTwice()
</span><span class="cx"> {
</span><span class="cx"> auto test = [&] (unsigned optLevel) {
</span><span class="lines">@@ -10615,6 +10634,7 @@
</span><span class="cx"> RUN_BINARY(testAddArgMem32, int32Operands(), int32Operands());
</span><span class="cx"> RUN_BINARY(testAddMemArg32, int32Operands(), int32Operands());
</span><span class="cx"> RUN_BINARY(testAddImmMem32, int32Operands(), int32Operands());
</span><ins>+ RUN(testAddArgZeroImmZDef());
</ins><span class="cx"> RUN(testAddLoadTwice());
</span><span class="cx">
</span><span class="cx"> RUN(testAddArgDouble(M_PI));
</span></span></pre>
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