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<title>[162969] branches/jsCStack/Source/JavaScriptCore</title>
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<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/162969">162969</a></dd>
<dt>Author</dt> <dd>fpizlo@apple.com</dd>
<dt>Date</dt> <dd>2014-01-28 15:22:56 -0800 (Tue, 28 Jan 2014)</dd>
</dl>
<h3>Log Message</h3>
<pre>FTL should support ArrayPush
https://bugs.webkit.org/show_bug.cgi?id=127748
Reviewed by Oliver Hunt.
* ftl/FTLAbstractHeapRepository.h:
(JSC::FTL::AbstractHeapRepository::forArrayType):
* ftl/FTLCapabilities.cpp:
(JSC::FTL::canCompile):
* ftl/FTLIntrinsicRepository.h:
* ftl/FTLLowerDFGToLLVM.cpp:
(JSC::FTL::LowerDFGToLLVM::compileNode):
(JSC::FTL::LowerDFGToLLVM::compileArrayPush):
* tests/stress/array-push-contiguous.js: Added.
(foo):
* tests/stress/array-push-double.js: Added.
(foo):</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#branchesjsCStackSourceJavaScriptCoreChangeLog">branches/jsCStack/Source/JavaScriptCore/ChangeLog</a></li>
<li><a href="#branchesjsCStackSourceJavaScriptCoreftlFTLAbstractHeapRepositoryh">branches/jsCStack/Source/JavaScriptCore/ftl/FTLAbstractHeapRepository.h</a></li>
<li><a href="#branchesjsCStackSourceJavaScriptCoreftlFTLCapabilitiescpp">branches/jsCStack/Source/JavaScriptCore/ftl/FTLCapabilities.cpp</a></li>
<li><a href="#branchesjsCStackSourceJavaScriptCoreftlFTLIntrinsicRepositoryh">branches/jsCStack/Source/JavaScriptCore/ftl/FTLIntrinsicRepository.h</a></li>
<li><a href="#branchesjsCStackSourceJavaScriptCoreftlFTLLowerDFGToLLVMcpp">branches/jsCStack/Source/JavaScriptCore/ftl/FTLLowerDFGToLLVM.cpp</a></li>
</ul>
<h3>Added Paths</h3>
<ul>
<li><a href="#branchesjsCStackSourceJavaScriptCoretestsstressarraypushcontiguousjs">branches/jsCStack/Source/JavaScriptCore/tests/stress/array-push-contiguous.js</a></li>
<li><a href="#branchesjsCStackSourceJavaScriptCoretestsstressarraypushdoublethennanjs">branches/jsCStack/Source/JavaScriptCore/tests/stress/array-push-double-then-nan.js</a></li>
<li><a href="#branchesjsCStackSourceJavaScriptCoretestsstressarraypushdoublejs">branches/jsCStack/Source/JavaScriptCore/tests/stress/array-push-double.js</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="branchesjsCStackSourceJavaScriptCoreChangeLog"></a>
<div class="modfile"><h4>Modified: branches/jsCStack/Source/JavaScriptCore/ChangeLog (162968 => 162969)</h4>
<pre class="diff"><span>
<span class="info">--- branches/jsCStack/Source/JavaScriptCore/ChangeLog 2014-01-28 23:12:19 UTC (rev 162968)
+++ branches/jsCStack/Source/JavaScriptCore/ChangeLog 2014-01-28 23:22:56 UTC (rev 162969)
</span><span class="lines">@@ -1,3 +1,23 @@
</span><ins>+2014-01-27 Filip Pizlo <fpizlo@apple.com>
+
+ FTL should support ArrayPush
+ https://bugs.webkit.org/show_bug.cgi?id=127748
+
+ Reviewed by Oliver Hunt.
+
+ * ftl/FTLAbstractHeapRepository.h:
+ (JSC::FTL::AbstractHeapRepository::forArrayType):
+ * ftl/FTLCapabilities.cpp:
+ (JSC::FTL::canCompile):
+ * ftl/FTLIntrinsicRepository.h:
+ * ftl/FTLLowerDFGToLLVM.cpp:
+ (JSC::FTL::LowerDFGToLLVM::compileNode):
+ (JSC::FTL::LowerDFGToLLVM::compileArrayPush):
+ * tests/stress/array-push-contiguous.js: Added.
+ (foo):
+ * tests/stress/array-push-double.js: Added.
+ (foo):
+
</ins><span class="cx"> 2014-01-28 Filip Pizlo <fpizlo@apple.com>
</span><span class="cx">
</span><span class="cx"> Arity fixup clobbers callee-saves, causing FTL->FTL arity fixed-up calls to corrupt state
</span></span></pre></div>
<a id="branchesjsCStackSourceJavaScriptCoreftlFTLAbstractHeapRepositoryh"></a>
<div class="modfile"><h4>Modified: branches/jsCStack/Source/JavaScriptCore/ftl/FTLAbstractHeapRepository.h (162968 => 162969)</h4>
<pre class="diff"><span>
<span class="info">--- branches/jsCStack/Source/JavaScriptCore/ftl/FTLAbstractHeapRepository.h 2014-01-28 23:12:19 UTC (rev 162968)
+++ branches/jsCStack/Source/JavaScriptCore/ftl/FTLAbstractHeapRepository.h 2014-01-28 23:22:56 UTC (rev 162969)
</span><span class="lines">@@ -30,6 +30,7 @@
</span><span class="cx">
</span><span class="cx"> #if ENABLE(FTL_JIT)
</span><span class="cx">
</span><ins>+#include "DFGArrayMode.h"
</ins><span class="cx"> #include "FTLAbstractHeap.h"
</span><span class="cx"> #include "IndexingType.h"
</span><span class="cx">
</span><span class="lines">@@ -136,6 +137,24 @@
</span><span class="cx"> return 0;
</span><span class="cx"> }
</span><span class="cx"> }
</span><ins>+
+ IndexedAbstractHeap& forArrayType(DFG::Array::Type type)
+ {
+ switch (type) {
+ case DFG::Array::Int32:
+ return indexedInt32Properties;
+ case DFG::Array::Double:
+ return indexedDoubleProperties;
+ case DFG::Array::Contiguous:
+ return indexedContiguousProperties;
+ case DFG::Array::ArrayStorage:
+ case DFG::Array::SlowPutArrayStorage:
+ return indexedArrayStorageProperties;
+ default:
+ RELEASE_ASSERT_NOT_REACHED();
+ return indexedInt32Properties;
+ }
+ }
</ins><span class="cx">
</span><span class="cx"> private:
</span><span class="cx"> friend class AbstractHeap;
</span></span></pre></div>
<a id="branchesjsCStackSourceJavaScriptCoreftlFTLCapabilitiescpp"></a>
<div class="modfile"><h4>Modified: branches/jsCStack/Source/JavaScriptCore/ftl/FTLCapabilities.cpp (162968 => 162969)</h4>
<pre class="diff"><span>
<span class="info">--- branches/jsCStack/Source/JavaScriptCore/ftl/FTLCapabilities.cpp 2014-01-28 23:12:19 UTC (rev 162968)
+++ branches/jsCStack/Source/JavaScriptCore/ftl/FTLCapabilities.cpp 2014-01-28 23:22:56 UTC (rev 162969)
</span><span class="lines">@@ -201,6 +201,16 @@
</span><span class="cx"> return CannotCompile;
</span><span class="cx"> }
</span><span class="cx"> break;
</span><ins>+ case ArrayPush:
+ switch (node->arrayMode().type()) {
+ case Array::Int32:
+ case Array::Contiguous:
+ case Array::Double:
+ break;
+ default:
+ return CannotCompile;
+ }
+ break;
</ins><span class="cx"> case CompareEq:
</span><span class="cx"> if (node->isBinaryUseKind(Int32Use))
</span><span class="cx"> break;
</span></span></pre></div>
<a id="branchesjsCStackSourceJavaScriptCoreftlFTLIntrinsicRepositoryh"></a>
<div class="modfile"><h4>Modified: branches/jsCStack/Source/JavaScriptCore/ftl/FTLIntrinsicRepository.h (162968 => 162969)</h4>
<pre class="diff"><span>
<span class="info">--- branches/jsCStack/Source/JavaScriptCore/ftl/FTLIntrinsicRepository.h 2014-01-28 23:12:19 UTC (rev 162968)
+++ branches/jsCStack/Source/JavaScriptCore/ftl/FTLIntrinsicRepository.h 2014-01-28 23:22:56 UTC (rev 162969)
</span><span class="lines">@@ -63,6 +63,8 @@
</span><span class="cx"> macro(I_JITOperation_EJss, functionType(intPtr, intPtr, intPtr)) \
</span><span class="cx"> macro(J_JITOperation_E, functionType(int64, intPtr)) \
</span><span class="cx"> macro(J_JITOperation_EAZ, functionType(int64, intPtr, intPtr, int32)) \
</span><ins>+ macro(J_JITOperation_EDA, functionType(int64, intPtr, doubleType, intPtr)) \
+ macro(J_JITOperation_EJA, functionType(int64, intPtr, int64, intPtr)) \
</ins><span class="cx"> macro(J_JITOperation_EJJ, functionType(int64, intPtr, int64, int64)) \
</span><span class="cx"> macro(J_JITOperation_EJssZ, functionType(int64, intPtr, intPtr, int32)) \
</span><span class="cx"> macro(J_JITOperation_ESsiJI, functionType(int64, intPtr, intPtr, int64, intPtr)) \
</span></span></pre></div>
<a id="branchesjsCStackSourceJavaScriptCoreftlFTLLowerDFGToLLVMcpp"></a>
<div class="modfile"><h4>Modified: branches/jsCStack/Source/JavaScriptCore/ftl/FTLLowerDFGToLLVM.cpp (162968 => 162969)</h4>
<pre class="diff"><span>
<span class="info">--- branches/jsCStack/Source/JavaScriptCore/ftl/FTLLowerDFGToLLVM.cpp 2014-01-28 23:12:19 UTC (rev 162968)
+++ branches/jsCStack/Source/JavaScriptCore/ftl/FTLLowerDFGToLLVM.cpp 2014-01-28 23:22:56 UTC (rev 162969)
</span><span class="lines">@@ -416,6 +416,9 @@
</span><span class="cx"> case PutByValDirect:
</span><span class="cx"> compilePutByVal();
</span><span class="cx"> break;
</span><ins>+ case ArrayPush:
+ compileArrayPush();
+ break;
</ins><span class="cx"> case NewObject:
</span><span class="cx"> compileNewObject();
</span><span class="cx"> break;
</span><span class="lines">@@ -2181,6 +2184,102 @@
</span><span class="cx"> }
</span><span class="cx"> }
</span><span class="cx">
</span><ins>+ void compileArrayPush()
+ {
+ LValue base = lowCell(m_node->child1());
+ LValue storage = lowStorage(m_node->child3());
+
+ switch (m_node->arrayMode().type()) {
+ case Array::Int32:
+ case Array::Contiguous:
+ case Array::Double: {
+ if (true) {
+ LValue value;
+ if (m_node->arrayMode().type() != Array::Double) {
+ value = lowJSValue(m_node->child2(), ManualOperandSpeculation);
+ if (m_node->arrayMode().type() == Array::Int32) {
+ FTL_TYPE_CHECK(
+ jsValueValue(value), m_node->child2(), SpecInt32, isNotInt32(value));
+ }
+ } else {
+ value = lowDouble(m_node->child2());
+ FTL_TYPE_CHECK(
+ doubleValue(value), m_node->child2(), SpecFullRealNumber,
+ m_out.doubleNotEqualOrUnordered(value, value));
+ }
+
+ LValue operation;
+ if (m_node->arrayMode().type() != Array::Double)
+ operation = m_out.operation(operationArrayPush);
+ else
+ operation = m_out.operation(operationArrayPushDouble);
+ setJSValue(vmCall(operation, m_callFrame, value, base));
+ return;
+ }
+
+ LValue value;
+ LType refType;
+
+ if (m_node->arrayMode().type() != Array::Double) {
+ value = lowJSValue(m_node->child2(), ManualOperandSpeculation);
+ if (m_node->arrayMode().type() == Array::Int32) {
+ FTL_TYPE_CHECK(
+ jsValueValue(value), m_node->child2(), SpecInt32, isNotInt32(value));
+ }
+ refType = m_out.ref64;
+ } else {
+ value = lowDouble(m_node->child2());
+ FTL_TYPE_CHECK(
+ doubleValue(value), m_node->child2(), SpecFullRealNumber,
+ m_out.doubleNotEqualOrUnordered(value, value));
+ refType = m_out.refDouble;
+ }
+
+ IndexedAbstractHeap& heap = m_heaps.forArrayType(m_node->arrayMode().type());
+
+ LValue prevLength = m_out.load32(storage, m_heaps.Butterfly_publicLength);
+
+ LBasicBlock fastPath = FTL_NEW_BLOCK(m_out, ("ArrayPush int32/contiguous fast path"));
+ LBasicBlock slowPath = FTL_NEW_BLOCK(m_out, ("ArrayPush int32/contiguous slow path"));
+ LBasicBlock continuation = FTL_NEW_BLOCK(m_out, ("ArrayPush int32/contiguous continuation"));
+
+ m_out.branch(
+ m_out.aboveOrEqual(
+ prevLength, m_out.load32(storage, m_heaps.Butterfly_vectorLength)),
+ slowPath, fastPath);
+
+ LBasicBlock lastNext = m_out.appendTo(fastPath, slowPath);
+ m_out.store(
+ value,
+ m_out.baseIndex(heap, storage, m_out.zeroExt(prevLength, m_out.intPtr)),
+ refType);
+ LValue newLength = m_out.add(prevLength, m_out.int32One);
+ m_out.store32(newLength, storage, m_heaps.Butterfly_publicLength);
+
+ ValueFromBlock fastResult = m_out.anchor(boxInt32(newLength));
+ m_out.jump(continuation);
+
+ m_out.appendTo(slowPath, continuation);
+ LValue operation;
+ if (m_node->arrayMode().type() != Array::Double)
+ operation = m_out.operation(operationArrayPush);
+ else
+ operation = m_out.operation(operationArrayPushDouble);
+ ValueFromBlock slowResult = m_out.anchor(
+ vmCall(operation, m_callFrame, value, base));
+ m_out.jump(continuation);
+
+ m_out.appendTo(continuation, lastNext);
+ setJSValue(m_out.phi(m_out.int64, fastResult, slowResult));
+ return;
+ }
+
+ default:
+ RELEASE_ASSERT_NOT_REACHED();
+ return;
+ }
+ }
+
</ins><span class="cx"> void compileNewObject()
</span><span class="cx"> {
</span><span class="cx"> Structure* structure = m_node->structure();
</span></span></pre></div>
<a id="branchesjsCStackSourceJavaScriptCoretestsstressarraypushcontiguousjs"></a>
<div class="addfile"><h4>Added: branches/jsCStack/Source/JavaScriptCore/tests/stress/array-push-contiguous.js (0 => 162969)</h4>
<pre class="diff"><span>
<span class="info">--- branches/jsCStack/Source/JavaScriptCore/tests/stress/array-push-contiguous.js (rev 0)
+++ branches/jsCStack/Source/JavaScriptCore/tests/stress/array-push-contiguous.js 2014-01-28 23:22:56 UTC (rev 162969)
</span><span class="lines">@@ -0,0 +1,18 @@
</span><ins>+function foo() {
+ var array = [];
+ var result = [];
+ for (var i = 0; i < 42; ++i)
+ result.push(array.push("hello"));
+ return [array, result];
+}
+
+noInline(foo);
+
+for (var i = 0; i < 100000; ++i) {
+ var result = foo();
+ if (result[0].toString() != "hello,hello,hello,hello,hello,hello,hello,hello,hello,hello,hello,hello,hello,hello,hello,hello,hello,hello,hello,hello,hello,hello,hello,hello,hello,hello,hello,hello,hello,hello,hello,hello,hello,hello,hello,hello,hello,hello,hello,hello,hello,hello")
+ throw "Error: bad array: " + result[0];
+ if (result[1].toString() != "1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42")
+ throw "Error: bad array: " + result[1];
+}
+
</ins></span></pre></div>
<a id="branchesjsCStackSourceJavaScriptCoretestsstressarraypushdoublethennanjs"></a>
<div class="addfile"><h4>Added: branches/jsCStack/Source/JavaScriptCore/tests/stress/array-push-double-then-nan.js (0 => 162969)</h4>
<pre class="diff"><span>
<span class="info">--- branches/jsCStack/Source/JavaScriptCore/tests/stress/array-push-double-then-nan.js (rev 0)
+++ branches/jsCStack/Source/JavaScriptCore/tests/stress/array-push-double-then-nan.js 2014-01-28 23:22:56 UTC (rev 162969)
</span><span class="lines">@@ -0,0 +1,23 @@
</span><ins>+function foo(x) {
+ var array = [];
+ var result = [];
+ for (var i = 0; i < 42; ++i)
+ result.push(array.push(x));
+ return [array, result];
+}
+
+noInline(foo);
+
+for (var i = 0; i < 100000; ++i) {
+ var result = foo(5.5);
+ if (result[0].toString() != "5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5,5.5")
+ throw "Error: bad array: " + result[0];
+ if (result[1].toString() != "1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42")
+ throw "Error: bad array: " + result[1];
+}
+
+var result = foo(0/0);
+if (result[0].toString() != "NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN")
+ throw "Error: bad array: " + result[0];
+if (result[1].toString() != "1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42")
+ throw "Error: bad array: " + result[1];
</ins></span></pre></div>
<a id="branchesjsCStackSourceJavaScriptCoretestsstressarraypushdoublejs"></a>
<div class="addfile"><h4>Added: branches/jsCStack/Source/JavaScriptCore/tests/stress/array-push-double.js (0 => 162969)</h4>
<pre class="diff"><span>
<span class="info">--- branches/jsCStack/Source/JavaScriptCore/tests/stress/array-push-double.js (rev 0)
+++ branches/jsCStack/Source/JavaScriptCore/tests/stress/array-push-double.js 2014-01-28 23:22:56 UTC (rev 162969)
</span><span class="lines">@@ -0,0 +1,18 @@
</span><ins>+function foo() {
+ var array = [];
+ var result = [];
+ for (var i = 0; i < 42; ++i)
+ result.push(array.push(7.5 - i));
+ return [array, result];
+}
+
+noInline(foo);
+
+for (var i = 0; i < 100000; ++i) {
+ var result = foo();
+ if (result[0].toString() != "7.5,6.5,5.5,4.5,3.5,2.5,1.5,0.5,-0.5,-1.5,-2.5,-3.5,-4.5,-5.5,-6.5,-7.5,-8.5,-9.5,-10.5,-11.5,-12.5,-13.5,-14.5,-15.5,-16.5,-17.5,-18.5,-19.5,-20.5,-21.5,-22.5,-23.5,-24.5,-25.5,-26.5,-27.5,-28.5,-29.5,-30.5,-31.5,-32.5,-33.5")
+ throw "Error: bad array: " + result[0];
+ if (result[1].toString() != "1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42")
+ throw "Error: bad array: " + result[1];
+}
+
</ins></span></pre>
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