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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/160411">160411</a></dd>
<dt>Author</dt> <dd>fpizlo@apple.com</dd>
<dt>Date</dt> <dd>2013-12-10 22:50:19 -0800 (Tue, 10 Dec 2013)</dd>
</dl>
<h3>Log Message</h3>
<pre>Get rid of forward exit on DoubleAsInt32
https://bugs.webkit.org/show_bug.cgi?id=125552
PerformanceTests/SunSpider:
Reviewed by Oliver Hunt.
Use SunSpider as a kind of spot-check for the
no-architecture-specific-optimization paths in the compiler.
* no-architecture-specific-optimizations.yaml: Added.
Source/JavaScriptCore:
Reviewed by Oliver Hunt.
The forward exit was just there so that we wouldn't have to keep the inputs alive up to
the DoubleAsInt32. That's dumb. Forward exits are a complicated piece of machinery and
we shouldn't have it just for a bit of liveness micro-optimization.
Also add a bunch of machinery to test this case on X86.
* assembler/AbstractMacroAssembler.h:
(JSC::optimizeForARMv7s):
(JSC::optimizeForARM64):
(JSC::optimizeForX86):
* dfg/DFGFixupPhase.cpp:
(JSC::DFG::FixupPhase::fixupNode):
* dfg/DFGNodeType.h:
* dfg/DFGSpeculativeJIT.cpp:
(JSC::DFG::SpeculativeJIT::compileDoubleAsInt32):
* runtime/Options.h:
* tests/stress/double-as-int32.js: Added.
(foo):
(test):
Tools:
Reviewed by Oliver Hunt.
Add some support for testing the generic (non-X86) paths on X86 by disabling
architecture-specific optimizations (ASO's).
* Scripts/run-javascriptcore-tests:
* Scripts/run-jsc-stress-tests:</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkPerformanceTestsSunSpiderChangeLog">trunk/PerformanceTests/SunSpider/ChangeLog</a></li>
<li><a href="#trunkSourceJavaScriptCoreChangeLog">trunk/Source/JavaScriptCore/ChangeLog</a></li>
<li><a href="#trunkSourceJavaScriptCoreassemblerAbstractMacroAssemblerh">trunk/Source/JavaScriptCore/assembler/AbstractMacroAssembler.h</a></li>
<li><a href="#trunkSourceJavaScriptCoredfgDFGFixupPhasecpp">trunk/Source/JavaScriptCore/dfg/DFGFixupPhase.cpp</a></li>
<li><a href="#trunkSourceJavaScriptCoredfgDFGNodeTypeh">trunk/Source/JavaScriptCore/dfg/DFGNodeType.h</a></li>
<li><a href="#trunkSourceJavaScriptCoredfgDFGSpeculativeJITcpp">trunk/Source/JavaScriptCore/dfg/DFGSpeculativeJIT.cpp</a></li>
<li><a href="#trunkSourceJavaScriptCoreruntimeOptionsh">trunk/Source/JavaScriptCore/runtime/Options.h</a></li>
<li><a href="#trunkToolsChangeLog">trunk/Tools/ChangeLog</a></li>
<li><a href="#trunkToolsScriptsrunjavascriptcoretests">trunk/Tools/Scripts/run-javascriptcore-tests</a></li>
<li><a href="#trunkToolsScriptsrunjscstresstests">trunk/Tools/Scripts/run-jsc-stress-tests</a></li>
</ul>
<h3>Added Paths</h3>
<ul>
<li><a href="#trunkPerformanceTestsSunSpidernoarchitecturespecificoptimizationsyaml">trunk/PerformanceTests/SunSpider/no-architecture-specific-optimizations.yaml</a></li>
<li><a href="#trunkSourceJavaScriptCoretestsstressdoubleasint32js">trunk/Source/JavaScriptCore/tests/stress/double-as-int32.js</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkPerformanceTestsSunSpiderChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/PerformanceTests/SunSpider/ChangeLog (160410 => 160411)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/PerformanceTests/SunSpider/ChangeLog 2013-12-11 05:57:01 UTC (rev 160410)
+++ trunk/PerformanceTests/SunSpider/ChangeLog 2013-12-11 06:50:19 UTC (rev 160411)
</span><span class="lines">@@ -1,3 +1,15 @@
</span><ins>+2013-12-10 Filip Pizlo <fpizlo@apple.com>
+
+ Get rid of forward exit on DoubleAsInt32
+ https://bugs.webkit.org/show_bug.cgi?id=125552
+
+ Reviewed by Oliver Hunt.
+
+ Use SunSpider as a kind of spot-check for the
+ no-architecture-specific-optimization paths in the compiler.
+
+ * no-architecture-specific-optimizations.yaml: Added.
+
</ins><span class="cx"> 2013-10-08 Geoffrey Garen <ggaren@apple.com>
</span><span class="cx">
</span><span class="cx"> Refined power management in SunSpider 1.0.2
</span></span></pre></div>
<a id="trunkPerformanceTestsSunSpidernoarchitecturespecificoptimizationsyaml"></a>
<div class="addfile"><h4>Added: trunk/PerformanceTests/SunSpider/no-architecture-specific-optimizations.yaml (0 => 160411)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/PerformanceTests/SunSpider/no-architecture-specific-optimizations.yaml (rev 0)
+++ trunk/PerformanceTests/SunSpider/no-architecture-specific-optimizations.yaml 2013-12-11 06:50:19 UTC (rev 160411)
</span><span class="lines">@@ -0,0 +1,30 @@
</span><ins>+# Copyright (C) 2013 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 AND ITS CONTRIBUTORS "AS IS" AND ANY
+# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS 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.
+
+# Tests SunSpider with architecture-specific optimizations disabled. This is
+# just here so you can't get away with murder when dealing with the generic
+# (i.e. no ASO) paths. You should still likely actually *test* all of the
+# architectures you care about.
+
+- path: tests/sunspider-1.0
+ cmd: runNoCJITNoASO
</ins></span></pre></div>
<a id="trunkSourceJavaScriptCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/ChangeLog (160410 => 160411)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/ChangeLog 2013-12-11 05:57:01 UTC (rev 160410)
+++ trunk/Source/JavaScriptCore/ChangeLog 2013-12-11 06:50:19 UTC (rev 160411)
</span><span class="lines">@@ -1,5 +1,32 @@
</span><span class="cx"> 2013-12-10 Filip Pizlo <fpizlo@apple.com>
</span><span class="cx">
</span><ins>+ Get rid of forward exit on DoubleAsInt32
+ https://bugs.webkit.org/show_bug.cgi?id=125552
+
+ Reviewed by Oliver Hunt.
+
+ The forward exit was just there so that we wouldn't have to keep the inputs alive up to
+ the DoubleAsInt32. That's dumb. Forward exits are a complicated piece of machinery and
+ we shouldn't have it just for a bit of liveness micro-optimization.
+
+ Also add a bunch of machinery to test this case on X86.
+
+ * assembler/AbstractMacroAssembler.h:
+ (JSC::optimizeForARMv7s):
+ (JSC::optimizeForARM64):
+ (JSC::optimizeForX86):
+ * dfg/DFGFixupPhase.cpp:
+ (JSC::DFG::FixupPhase::fixupNode):
+ * dfg/DFGNodeType.h:
+ * dfg/DFGSpeculativeJIT.cpp:
+ (JSC::DFG::SpeculativeJIT::compileDoubleAsInt32):
+ * runtime/Options.h:
+ * tests/stress/double-as-int32.js: Added.
+ (foo):
+ (test):
+
+2013-12-10 Filip Pizlo <fpizlo@apple.com>
+
</ins><span class="cx"> Simplify CSE's treatment of NodeRelevantToOSR
</span><span class="cx"> https://bugs.webkit.org/show_bug.cgi?id=125538
</span><span class="cx">
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoreassemblerAbstractMacroAssemblerh"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/assembler/AbstractMacroAssembler.h (160410 => 160411)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/assembler/AbstractMacroAssembler.h 2013-12-11 05:57:01 UTC (rev 160410)
+++ trunk/Source/JavaScriptCore/assembler/AbstractMacroAssembler.h 2013-12-11 06:50:19 UTC (rev 160411)
</span><span class="lines">@@ -29,6 +29,7 @@
</span><span class="cx"> #include "AssemblerBuffer.h"
</span><span class="cx"> #include "CodeLocation.h"
</span><span class="cx"> #include "MacroAssemblerCodeRef.h"
</span><ins>+#include "Options.h"
</ins><span class="cx"> #include <wtf/CryptographicallyRandomNumber.h>
</span><span class="cx"> #include <wtf/Noncopyable.h>
</span><span class="cx">
</span><span class="lines">@@ -63,6 +64,21 @@
</span><span class="cx"> #endif
</span><span class="cx"> }
</span><span class="cx">
</span><ins>+inline bool optimizeForARMv7s()
+{
+ return isARMv7s() && Options::enableArchitectureSpecificOptimizations();
+}
+
+inline bool optimizeForARM64()
+{
+ return isARM64() && Options::enableArchitectureSpecificOptimizations();
+}
+
+inline bool optimizeForX86()
+{
+ return isX86() && Options::enableArchitectureSpecificOptimizations();
+}
+
</ins><span class="cx"> class LinkBuffer;
</span><span class="cx"> class RepatchBuffer;
</span><span class="cx"> class Watchpoint;
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoredfgDFGFixupPhasecpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/dfg/DFGFixupPhase.cpp (160410 => 160411)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/dfg/DFGFixupPhase.cpp 2013-12-11 05:57:01 UTC (rev 160410)
+++ trunk/Source/JavaScriptCore/dfg/DFGFixupPhase.cpp 2013-12-11 06:50:19 UTC (rev 160411)
</span><span class="lines">@@ -233,11 +233,14 @@
</span><span class="cx"> case ArithMod: {
</span><span class="cx"> if (Node::shouldSpeculateInt32ForArithmetic(node->child1().node(), node->child2().node())
</span><span class="cx"> && node->canSpeculateInt32()) {
</span><del>- if (isX86() || isARM64() || isARMv7s()) {
</del><ins>+ if (optimizeForX86() || optimizeForARM64() || optimizeForARMv7s()) {
</ins><span class="cx"> fixEdge<Int32Use>(node->child1());
</span><span class="cx"> fixEdge<Int32Use>(node->child2());
</span><span class="cx"> break;
</span><span class="cx"> }
</span><ins>+ Edge child1 = node->child1();
+ Edge child2 = node->child2();
+
</ins><span class="cx"> injectInt32ToDoubleNode(node->child1());
</span><span class="cx"> injectInt32ToDoubleNode(node->child2());
</span><span class="cx">
</span><span class="lines">@@ -248,6 +251,8 @@
</span><span class="cx">
</span><span class="cx"> node->setOp(DoubleAsInt32);
</span><span class="cx"> node->children.initialize(Edge(newDivision, KnownNumberUse), Edge(), Edge());
</span><ins>+
+ m_insertionSet.insertNode(m_indexInBlock + 1, SpecNone, Phantom, node->codeOrigin, child1, child2);
</ins><span class="cx"> break;
</span><span class="cx"> }
</span><span class="cx"> fixEdge<NumberUse>(node->child1());
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoredfgDFGNodeTypeh"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/dfg/DFGNodeType.h (160410 => 160411)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/dfg/DFGNodeType.h 2013-12-11 05:57:01 UTC (rev 160410)
+++ trunk/Source/JavaScriptCore/dfg/DFGNodeType.h 2013-12-11 06:50:19 UTC (rev 160411)
</span><span class="lines">@@ -111,7 +111,7 @@
</span><span class="cx"> /* of the value from the integer form. */\
</span><span class="cx"> macro(Int32ToDouble, NodeResultNumber) \
</span><span class="cx"> /* Used to speculate that a double value is actually an integer. */\
</span><del>- macro(DoubleAsInt32, NodeResultInt32 | NodeExitsForward) \
</del><ins>+ macro(DoubleAsInt32, NodeResultInt32) \
</ins><span class="cx"> /* Used to separate representation and register allocation of Int52's represented */\
</span><span class="cx"> /* as values. */\
</span><span class="cx"> macro(Int52ToValue, NodeResultJS) \
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoredfgDFGSpeculativeJITcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/dfg/DFGSpeculativeJIT.cpp (160410 => 160411)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/dfg/DFGSpeculativeJIT.cpp 2013-12-11 05:57:01 UTC (rev 160410)
+++ trunk/Source/JavaScriptCore/dfg/DFGSpeculativeJIT.cpp 2013-12-11 06:50:19 UTC (rev 160411)
</span><span class="lines">@@ -2188,7 +2188,7 @@
</span><span class="cx"> JITCompiler::JumpList failureCases;
</span><span class="cx"> bool negZeroCheck = !bytecodeCanIgnoreNegativeZero(node->arithNodeFlags());
</span><span class="cx"> m_jit.branchConvertDoubleToInt32(valueFPR, resultGPR, failureCases, scratchFPR, negZeroCheck);
</span><del>- forwardSpeculationCheck(Overflow, JSValueRegs(), 0, failureCases, ValueRecovery::inFPR(valueFPR));
</del><ins>+ speculationCheck(Overflow, JSValueRegs(), 0, failureCases);
</ins><span class="cx">
</span><span class="cx"> int32Result(resultGPR, node);
</span><span class="cx"> }
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoreruntimeOptionsh"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/runtime/Options.h (160410 => 160411)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/runtime/Options.h 2013-12-11 05:57:01 UTC (rev 160410)
+++ trunk/Source/JavaScriptCore/runtime/Options.h 2013-12-11 06:50:19 UTC (rev 160411)
</span><span class="lines">@@ -144,6 +144,8 @@
</span><span class="cx"> v(bool, forceUDis86Disassembler, false) \
</span><span class="cx"> v(bool, forceLLVMDisassembler, false) \
</span><span class="cx"> \
</span><ins>+ v(bool, enableArchitectureSpecificOptimizations, true) \
+ \
</ins><span class="cx"> v(unsigned, maximumOptimizationCandidateInstructionCount, 10000) \
</span><span class="cx"> \
</span><span class="cx"> v(unsigned, maximumFunctionForCallInlineCandidateInstructionCount, 180) \
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoretestsstressdoubleasint32js"></a>
<div class="addfile"><h4>Added: trunk/Source/JavaScriptCore/tests/stress/double-as-int32.js (0 => 160411)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/tests/stress/double-as-int32.js (rev 0)
+++ trunk/Source/JavaScriptCore/tests/stress/double-as-int32.js 2013-12-11 06:50:19 UTC (rev 160411)
</span><span class="lines">@@ -0,0 +1,22 @@
</span><ins>+//@ defaultRun; runNoCJITNoASO
+
+function foo(a, b) {
+ return a.f / b.f;
+}
+
+noInline(foo);
+
+function test(a, b, e) {
+ var result = foo({f:a}, {f:b});
+ if (result != e)
+ throw "Error: " + a + " / " + b + " should be " + e + " but was " + result;
+}
+
+for (var i = 1; i < 101; ++i)
+ test(i * 2, i, 2);
+
+test(9, 3, 3);
+test(12, 4, 3);
+test(-32, 8, -4);
+test(-21, 7, -3);
+test(7, 2, 3.5);
</ins></span></pre></div>
<a id="trunkToolsChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Tools/ChangeLog (160410 => 160411)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Tools/ChangeLog 2013-12-11 05:57:01 UTC (rev 160410)
+++ trunk/Tools/ChangeLog 2013-12-11 06:50:19 UTC (rev 160411)
</span><span class="lines">@@ -1,3 +1,16 @@
</span><ins>+2013-12-10 Filip Pizlo <fpizlo@apple.com>
+
+ Get rid of forward exit on DoubleAsInt32
+ https://bugs.webkit.org/show_bug.cgi?id=125552
+
+ Reviewed by Oliver Hunt.
+
+ Add some support for testing the generic (non-X86) paths on X86 by disabling
+ architecture-specific optimizations (ASO's).
+
+ * Scripts/run-javascriptcore-tests:
+ * Scripts/run-jsc-stress-tests:
+
</ins><span class="cx"> 2013-12-10 Ryuan Choi <ryuan.choi@samsung.com>
</span><span class="cx">
</span><span class="cx"> Unreviewed EFL build fix attempt
</span></span></pre></div>
<a id="trunkToolsScriptsrunjavascriptcoretests"></a>
<div class="modfile"><h4>Modified: trunk/Tools/Scripts/run-javascriptcore-tests (160410 => 160411)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Tools/Scripts/run-javascriptcore-tests 2013-12-11 05:57:01 UTC (rev 160410)
+++ trunk/Tools/Scripts/run-javascriptcore-tests 2013-12-11 06:50:19 UTC (rev 160411)
</span><span class="lines">@@ -237,6 +237,7 @@
</span><span class="cx"> "/usr/bin/env", "ruby", "Tools/Scripts/run-jsc-stress-tests",
</span><span class="cx"> "-j", jscPath($productDir), "-o", $jscStressResultsDir,
</span><span class="cx"> "PerformanceTests/SunSpider/tests/sunspider-1.0",
</span><ins>+ "PerformanceTests/SunSpider/no-architecture-specific-optimizations.yaml",
</ins><span class="cx"> "PerformanceTests/SunSpider/tests/v8-v6",
</span><span class="cx"> "Source/JavaScriptCore/tests/mozilla/mozilla-tests.yaml",
</span><span class="cx"> "Source/JavaScriptCore/tests/stress",
</span></span></pre></div>
<a id="trunkToolsScriptsrunjscstresstests"></a>
<div class="modfile"><h4>Modified: trunk/Tools/Scripts/run-jsc-stress-tests (160410 => 160411)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Tools/Scripts/run-jsc-stress-tests 2013-12-11 05:57:01 UTC (rev 160410)
+++ trunk/Tools/Scripts/run-jsc-stress-tests 2013-12-11 06:50:19 UTC (rev 160411)
</span><span class="lines">@@ -563,6 +563,10 @@
</span><span class="cx"> run("always-trigger-copy-phase", "--minHeapUtilization=2.0", "--minCopiedBlockUtilization=2.0")
</span><span class="cx"> end
</span><span class="cx">
</span><ins>+def runNoCJITNoASO
+ run("no-cjit-no-aso", "--enableConcurrentJIT=false", "--enableArchitectureSpecificOptimizations=false")
+end
+
</ins><span class="cx"> def defaultRun
</span><span class="cx"> runDefault
</span><span class="cx"> runNoLLInt
</span></span></pre>
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