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<title>[171763] branches/ftlopt/Source/JavaScriptCore</title>
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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/171763">171763</a></dd>
<dt>Author</dt> <dd>mhahnenberg@apple.com</dd>
<dt>Date</dt> <dd>2014-07-29 14:03:06 -0700 (Tue, 29 Jul 2014)</dd>
</dl>
<h3>Log Message</h3>
<pre>Support for-in in the FTL
https://bugs.webkit.org/show_bug.cgi?id=134140
Reviewed by Filip Pizlo.
* dfg/DFGSSALoweringPhase.cpp:
(JSC::DFG::SSALoweringPhase::handleNode):
* ftl/FTLAbstractHeapRepository.cpp:
* ftl/FTLAbstractHeapRepository.h:
* ftl/FTLCapabilities.cpp:
(JSC::FTL::canCompile):
* ftl/FTLIntrinsicRepository.h:
* ftl/FTLLowerDFGToLLVM.cpp:
(JSC::FTL::LowerDFGToLLVM::compileNode):
(JSC::FTL::LowerDFGToLLVM::compileHasIndexedProperty):
(JSC::FTL::LowerDFGToLLVM::compileHasGenericProperty):
(JSC::FTL::LowerDFGToLLVM::compileHasStructureProperty):
(JSC::FTL::LowerDFGToLLVM::compileGetDirectPname):
(JSC::FTL::LowerDFGToLLVM::compileGetEnumerableLength):
(JSC::FTL::LowerDFGToLLVM::compileGetStructurePropertyEnumerator):
(JSC::FTL::LowerDFGToLLVM::compileGetGenericPropertyEnumerator):
(JSC::FTL::LowerDFGToLLVM::compileGetEnumeratorPname):
(JSC::FTL::LowerDFGToLLVM::compileToIndexString):</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#branchesftloptSourceJavaScriptCoreChangeLog">branches/ftlopt/Source/JavaScriptCore/ChangeLog</a></li>
<li><a href="#branchesftloptSourceJavaScriptCoredfgDFGSSALoweringPhasecpp">branches/ftlopt/Source/JavaScriptCore/dfg/DFGSSALoweringPhase.cpp</a></li>
<li><a href="#branchesftloptSourceJavaScriptCoreftlFTLAbstractHeapRepositorycpp">branches/ftlopt/Source/JavaScriptCore/ftl/FTLAbstractHeapRepository.cpp</a></li>
<li><a href="#branchesftloptSourceJavaScriptCoreftlFTLAbstractHeapRepositoryh">branches/ftlopt/Source/JavaScriptCore/ftl/FTLAbstractHeapRepository.h</a></li>
<li><a href="#branchesftloptSourceJavaScriptCoreftlFTLCapabilitiescpp">branches/ftlopt/Source/JavaScriptCore/ftl/FTLCapabilities.cpp</a></li>
<li><a href="#branchesftloptSourceJavaScriptCoreftlFTLIntrinsicRepositoryh">branches/ftlopt/Source/JavaScriptCore/ftl/FTLIntrinsicRepository.h</a></li>
<li><a href="#branchesftloptSourceJavaScriptCoreftlFTLLowerDFGToLLVMcpp">branches/ftlopt/Source/JavaScriptCore/ftl/FTLLowerDFGToLLVM.cpp</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="branchesftloptSourceJavaScriptCoreChangeLog"></a>
<div class="modfile"><h4>Modified: branches/ftlopt/Source/JavaScriptCore/ChangeLog (171762 => 171763)</h4>
<pre class="diff"><span>
<span class="info">--- branches/ftlopt/Source/JavaScriptCore/ChangeLog 2014-07-29 21:00:51 UTC (rev 171762)
+++ branches/ftlopt/Source/JavaScriptCore/ChangeLog 2014-07-29 21:03:06 UTC (rev 171763)
</span><span class="lines">@@ -1,3 +1,29 @@
</span><ins>+2014-07-28 Mark Hahnenberg <mhahnenberg@apple.com>
+
+ Support for-in in the FTL
+ https://bugs.webkit.org/show_bug.cgi?id=134140
+
+ Reviewed by Filip Pizlo.
+
+ * dfg/DFGSSALoweringPhase.cpp:
+ (JSC::DFG::SSALoweringPhase::handleNode):
+ * ftl/FTLAbstractHeapRepository.cpp:
+ * ftl/FTLAbstractHeapRepository.h:
+ * ftl/FTLCapabilities.cpp:
+ (JSC::FTL::canCompile):
+ * ftl/FTLIntrinsicRepository.h:
+ * ftl/FTLLowerDFGToLLVM.cpp:
+ (JSC::FTL::LowerDFGToLLVM::compileNode):
+ (JSC::FTL::LowerDFGToLLVM::compileHasIndexedProperty):
+ (JSC::FTL::LowerDFGToLLVM::compileHasGenericProperty):
+ (JSC::FTL::LowerDFGToLLVM::compileHasStructureProperty):
+ (JSC::FTL::LowerDFGToLLVM::compileGetDirectPname):
+ (JSC::FTL::LowerDFGToLLVM::compileGetEnumerableLength):
+ (JSC::FTL::LowerDFGToLLVM::compileGetStructurePropertyEnumerator):
+ (JSC::FTL::LowerDFGToLLVM::compileGetGenericPropertyEnumerator):
+ (JSC::FTL::LowerDFGToLLVM::compileGetEnumeratorPname):
+ (JSC::FTL::LowerDFGToLLVM::compileToIndexString):
+
</ins><span class="cx"> 2014-07-25 Mark Hahnenberg <mhahnenberg@apple.com>
</span><span class="cx">
</span><span class="cx"> Remove JSPropertyNameIterator
</span></span></pre></div>
<a id="branchesftloptSourceJavaScriptCoredfgDFGSSALoweringPhasecpp"></a>
<div class="modfile"><h4>Modified: branches/ftlopt/Source/JavaScriptCore/dfg/DFGSSALoweringPhase.cpp (171762 => 171763)</h4>
<pre class="diff"><span>
<span class="info">--- branches/ftlopt/Source/JavaScriptCore/dfg/DFGSSALoweringPhase.cpp 2014-07-29 21:00:51 UTC (rev 171762)
+++ branches/ftlopt/Source/JavaScriptCore/dfg/DFGSSALoweringPhase.cpp 2014-07-29 21:03:06 UTC (rev 171763)
</span><span class="lines">@@ -69,6 +69,7 @@
</span><span class="cx"> {
</span><span class="cx"> switch (m_node->op()) {
</span><span class="cx"> case GetByVal:
</span><ins>+ case HasIndexedProperty:
</ins><span class="cx"> lowerBoundsCheck(m_node->child1(), m_node->child2(), m_node->child3());
</span><span class="cx"> break;
</span><span class="cx">
</span></span></pre></div>
<a id="branchesftloptSourceJavaScriptCoreftlFTLAbstractHeapRepositorycpp"></a>
<div class="modfile"><h4>Modified: branches/ftlopt/Source/JavaScriptCore/ftl/FTLAbstractHeapRepository.cpp (171762 => 171763)</h4>
<pre class="diff"><span>
<span class="info">--- branches/ftlopt/Source/JavaScriptCore/ftl/FTLAbstractHeapRepository.cpp 2014-07-29 21:00:51 UTC (rev 171762)
+++ branches/ftlopt/Source/JavaScriptCore/ftl/FTLAbstractHeapRepository.cpp 2014-07-29 21:03:06 UTC (rev 171763)
</span><span class="lines">@@ -29,6 +29,7 @@
</span><span class="cx"> #if ENABLE(FTL_JIT)
</span><span class="cx">
</span><span class="cx"> #include "GetterSetter.h"
</span><ins>+#include "JSPropertyNameEnumerator.h"
</ins><span class="cx"> #include "JSScope.h"
</span><span class="cx"> #include "JSVariableObject.h"
</span><span class="cx"> #include "JSCInlines.h"
</span></span></pre></div>
<a id="branchesftloptSourceJavaScriptCoreftlFTLAbstractHeapRepositoryh"></a>
<div class="modfile"><h4>Modified: branches/ftlopt/Source/JavaScriptCore/ftl/FTLAbstractHeapRepository.h (171762 => 171763)</h4>
<pre class="diff"><span>
<span class="info">--- branches/ftlopt/Source/JavaScriptCore/ftl/FTLAbstractHeapRepository.h 2014-07-29 21:00:51 UTC (rev 171762)
+++ branches/ftlopt/Source/JavaScriptCore/ftl/FTLAbstractHeapRepository.h 2014-07-29 21:03:06 UTC (rev 171763)
</span><span class="lines">@@ -59,6 +59,10 @@
</span><span class="cx"> macro(JSFunction_executable, JSFunction::offsetOfExecutable()) \
</span><span class="cx"> macro(JSFunction_scope, JSFunction::offsetOfScopeChain()) \
</span><span class="cx"> macro(JSObject_butterfly, JSObject::butterflyOffset()) \
</span><ins>+ macro(JSPropertyNameEnumerator_cachedInlineCapacity, JSPropertyNameEnumerator::cachedInlineCapacityOffset()) \
+ macro(JSPropertyNameEnumerator_cachedPropertyNamesLength, JSPropertyNameEnumerator::cachedPropertyNamesLengthOffset()) \
+ macro(JSPropertyNameEnumerator_cachedPropertyNamesVector, JSPropertyNameEnumerator::cachedPropertyNamesVectorOffset()) \
+ macro(JSPropertyNameEnumerator_cachedStructureID, JSPropertyNameEnumerator::cachedStructureIDOffset()) \
</ins><span class="cx"> macro(JSScope_next, JSScope::offsetOfNext()) \
</span><span class="cx"> macro(JSString_flags, JSString::offsetOfFlags()) \
</span><span class="cx"> macro(JSString_length, JSString::offsetOfLength()) \
</span></span></pre></div>
<a id="branchesftloptSourceJavaScriptCoreftlFTLCapabilitiescpp"></a>
<div class="modfile"><h4>Modified: branches/ftlopt/Source/JavaScriptCore/ftl/FTLCapabilities.cpp (171762 => 171763)</h4>
<pre class="diff"><span>
<span class="info">--- branches/ftlopt/Source/JavaScriptCore/ftl/FTLCapabilities.cpp 2014-07-29 21:00:51 UTC (rev 171762)
+++ branches/ftlopt/Source/JavaScriptCore/ftl/FTLCapabilities.cpp 2014-07-29 21:03:06 UTC (rev 171763)
</span><span class="lines">@@ -157,6 +157,14 @@
</span><span class="cx"> case Int52Rep:
</span><span class="cx"> case DoubleConstant:
</span><span class="cx"> case Int52Constant:
</span><ins>+ case HasGenericProperty:
+ case HasStructureProperty:
+ case GetDirectPname:
+ case GetEnumerableLength:
+ case GetStructurePropertyEnumerator:
+ case GetGenericPropertyEnumerator:
+ case GetEnumeratorPname:
+ case ToIndexString:
</ins><span class="cx"> // These are OK.
</span><span class="cx"> break;
</span><span class="cx"> case Identity:
</span><span class="lines">@@ -205,6 +213,17 @@
</span><span class="cx"> return CannotCompile;
</span><span class="cx"> }
</span><span class="cx"> break;
</span><ins>+ case HasIndexedProperty:
+ switch (node->arrayMode().type()) {
+ case Array::ForceExit:
+ case Array::Int32:
+ case Array::Double:
+ case Array::Contiguous:
+ break;
+ default:
+ return CannotCompile;
+ }
+ break;
</ins><span class="cx"> case GetByVal:
</span><span class="cx"> switch (node->arrayMode().type()) {
</span><span class="cx"> case Array::ForceExit:
</span></span></pre></div>
<a id="branchesftloptSourceJavaScriptCoreftlFTLIntrinsicRepositoryh"></a>
<div class="modfile"><h4>Modified: branches/ftlopt/Source/JavaScriptCore/ftl/FTLIntrinsicRepository.h (171762 => 171763)</h4>
<pre class="diff"><span>
<span class="info">--- branches/ftlopt/Source/JavaScriptCore/ftl/FTLIntrinsicRepository.h 2014-07-29 21:00:51 UTC (rev 171762)
+++ branches/ftlopt/Source/JavaScriptCore/ftl/FTLIntrinsicRepository.h 2014-07-29 21:03:06 UTC (rev 171763)
</span><span class="lines">@@ -54,19 +54,24 @@
</span><span class="cx">
</span><span class="cx"> #define FOR_EACH_FUNCTION_TYPE(macro) \
</span><span class="cx"> macro(C_JITOperation_EC, functionType(intPtr, intPtr, intPtr)) \
</span><ins>+ macro(C_JITOperation_ECZ, functionType(intPtr, intPtr, intPtr, int32)) \
+ macro(C_JITOperation_ECZC, functionType(intPtr, intPtr, intPtr, int32, intPtr)) \
</ins><span class="cx"> macro(C_JITOperation_EJ, functionType(intPtr, intPtr, int64)) \
</span><span class="cx"> macro(C_JITOperation_EJssJss, functionType(intPtr, intPtr, intPtr, intPtr)) \
</span><span class="cx"> macro(C_JITOperation_EJssJssJss, functionType(intPtr, intPtr, intPtr, intPtr, intPtr)) \
</span><span class="cx"> macro(C_JITOperation_ESt, functionType(intPtr, intPtr, intPtr)) \
</span><ins>+ macro(C_JITOperation_EZ, functionType(intPtr, intPtr, int32)) \
</ins><span class="cx"> macro(D_JITOperation_D, functionType(doubleType, doubleType)) \
</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_EA, functionType(int64, intPtr, intPtr)) \
</span><span class="cx"> macro(J_JITOperation_EAZ, functionType(int64, intPtr, intPtr, int32)) \
</span><span class="cx"> macro(J_JITOperation_ECJ, functionType(int64, intPtr, intPtr, int64)) \
</span><ins>+ macro(J_JITOperation_ECZ, functionType(int64, intPtr, intPtr, int32)) \
</ins><span class="cx"> macro(J_JITOperation_EDA, functionType(int64, intPtr, doubleType, intPtr)) \
</span><span class="cx"> macro(J_JITOperation_EJ, functionType(int64, intPtr, int64)) \
</span><span class="cx"> macro(J_JITOperation_EJA, functionType(int64, intPtr, int64, intPtr)) \
</span><ins>+ macro(J_JITOperation_EJC, 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 class="lines">@@ -92,8 +97,9 @@
</span><span class="cx"> macro(V_JITOperation_EVwsJ, functionType(voidType, intPtr, intPtr, int64)) \
</span><span class="cx"> macro(V_JITOperation_J, functionType(voidType, int64)) \
</span><span class="cx"> macro(V_JITOperation_Z, functionType(voidType, int32)) \
</span><del>- macro(Z_JITOperation_D, functionType(int32, doubleType))
-
</del><ins>+ macro(Z_JITOperation_D, functionType(int32, doubleType)) \
+ macro(Z_JITOperation_EC, functionType(int32, intPtr, intPtr))
+
</ins><span class="cx"> class IntrinsicRepository : public CommonValues {
</span><span class="cx"> public:
</span><span class="cx"> IntrinsicRepository(LContext);
</span></span></pre></div>
<a id="branchesftloptSourceJavaScriptCoreftlFTLLowerDFGToLLVMcpp"></a>
<div class="modfile"><h4>Modified: branches/ftlopt/Source/JavaScriptCore/ftl/FTLLowerDFGToLLVM.cpp (171762 => 171763)</h4>
<pre class="diff"><span>
<span class="info">--- branches/ftlopt/Source/JavaScriptCore/ftl/FTLLowerDFGToLLVM.cpp 2014-07-29 21:00:51 UTC (rev 171762)
+++ branches/ftlopt/Source/JavaScriptCore/ftl/FTLLowerDFGToLLVM.cpp 2014-07-29 21:03:06 UTC (rev 171763)
</span><span class="lines">@@ -692,6 +692,34 @@
</span><span class="cx"> case StoreBarrierWithNullCheck:
</span><span class="cx"> compileStoreBarrierWithNullCheck();
</span><span class="cx"> break;
</span><ins>+ case HasIndexedProperty:
+ compileHasIndexedProperty();
+ break;
+ case HasGenericProperty:
+ compileHasGenericProperty();
+ break;
+ case HasStructureProperty:
+ compileHasStructureProperty();
+ break;
+ case GetDirectPname:
+ compileGetDirectPname();
+ break;
+ case GetEnumerableLength:
+ compileGetEnumerableLength();
+ break;
+ case GetStructurePropertyEnumerator:
+ compileGetStructurePropertyEnumerator();
+ break;
+ case GetGenericPropertyEnumerator:
+ compileGetGenericPropertyEnumerator();
+ break;
+ case GetEnumeratorPname:
+ compileGetEnumeratorPname();
+ break;
+ case ToIndexString:
+ compileToIndexString();
+ break;
+
</ins><span class="cx"> case PhantomLocal:
</span><span class="cx"> case SetArgument:
</span><span class="cx"> case LoopHint:
</span><span class="lines">@@ -4055,6 +4083,225 @@
</span><span class="cx"> #endif
</span><span class="cx"> }
</span><span class="cx">
</span><ins>+ void compileHasIndexedProperty()
+ {
+ switch (m_node->arrayMode().type()) {
+ case Array::Int32:
+ case Array::Contiguous: {
+ LValue base = lowCell(m_node->child1());
+ LValue index = lowInt32(m_node->child2());
+ LValue storage = lowStorage(m_node->child3());
+
+ IndexedAbstractHeap& heap = m_node->arrayMode().type() == Array::Int32 ?
+ m_heaps.indexedInt32Properties : m_heaps.indexedContiguousProperties;
+
+ LBasicBlock checkHole = FTL_NEW_BLOCK(m_out, ("HasIndexedProperty int/contiguous check hole"));
+ LBasicBlock slowCase = FTL_NEW_BLOCK(m_out, ("HasIndexedProperty int/contiguous slow case"));
+ LBasicBlock continuation = FTL_NEW_BLOCK(m_out, ("HasIndexedProperty int/contiguous continuation"));
+
+ if (!m_node->arrayMode().isInBounds()) {
+ m_out.branch(
+ m_out.aboveOrEqual(
+ index, m_out.load32NonNegative(storage, m_heaps.Butterfly_publicLength)),
+ rarely(slowCase), usually(checkHole));
+ } else
+ m_out.jump(checkHole);
+
+ LBasicBlock lastNext = m_out.appendTo(checkHole, slowCase);
+ ValueFromBlock checkHoleResult = m_out.anchor(
+ m_out.notZero64(m_out.load64(baseIndex(heap, storage, index, m_node->child2()))));
+ m_out.branch(checkHoleResult.value(), usually(continuation), rarely(slowCase));
+
+ m_out.appendTo(slowCase, continuation);
+ ValueFromBlock slowResult = m_out.anchor(m_out.equal(
+ m_out.constInt64(JSValue::encode(jsBoolean(true))),
+ vmCall(m_out.operation(operationHasIndexedProperty), m_callFrame, base, index)));
+ m_out.jump(continuation);
+
+ m_out.appendTo(continuation, lastNext);
+ setBoolean(m_out.phi(m_out.boolean, checkHoleResult, slowResult));
+ return;
+ }
+ case Array::Double: {
+ LValue base = lowCell(m_node->child1());
+ LValue index = lowInt32(m_node->child2());
+ LValue storage = lowStorage(m_node->child3());
+
+ IndexedAbstractHeap& heap = m_heaps.indexedDoubleProperties;
+
+ LBasicBlock checkHole = FTL_NEW_BLOCK(m_out, ("HasIndexedProperty double check hole"));
+ LBasicBlock slowCase = FTL_NEW_BLOCK(m_out, ("HasIndexedProperty double slow case"));
+ LBasicBlock continuation = FTL_NEW_BLOCK(m_out, ("HasIndexedProperty double continuation"));
+
+ if (!m_node->arrayMode().isInBounds()) {
+ m_out.branch(
+ m_out.aboveOrEqual(
+ index, m_out.load32NonNegative(storage, m_heaps.Butterfly_publicLength)),
+ rarely(slowCase), usually(checkHole));
+ } else
+ m_out.jump(checkHole);
+
+ LBasicBlock lastNext = m_out.appendTo(checkHole, slowCase);
+ LValue doubleValue = m_out.loadDouble(baseIndex(heap, storage, index, m_node->child2()));
+ ValueFromBlock checkHoleResult = m_out.anchor(
+ m_out.doubleNotEqualOrUnordered(doubleValue, doubleValue));
+ m_out.branch(checkHoleResult.value(), rarely(slowCase), usually(continuation));
+
+ m_out.appendTo(slowCase, continuation);
+ ValueFromBlock slowResult = m_out.anchor(m_out.equal(
+ m_out.constInt64(JSValue::encode(jsBoolean(true))),
+ vmCall(m_out.operation(operationHasIndexedProperty), m_callFrame, base, index)));
+ m_out.jump(continuation);
+
+ m_out.appendTo(continuation, lastNext);
+ setBoolean(m_out.phi(m_out.boolean, checkHoleResult, slowResult));
+ return;
+ }
+
+ default:
+ RELEASE_ASSERT_NOT_REACHED();
+ return;
+ }
+ }
+
+ void compileHasGenericProperty()
+ {
+ LValue base = lowJSValue(m_node->child1());
+ LValue property = lowCell(m_node->child2());
+ setJSValue(vmCall(m_out.operation(operationHasGenericProperty), m_callFrame, base, property));
+ }
+
+ void compileHasStructureProperty()
+ {
+ LValue base = lowJSValue(m_node->child1());
+ LValue property = lowString(m_node->child2());
+ LValue enumerator = lowCell(m_node->child3());
+
+ LBasicBlock correctStructure = FTL_NEW_BLOCK(m_out, ("HasStructureProperty correct structure"));
+ LBasicBlock wrongStructure = FTL_NEW_BLOCK(m_out, ("HasStructureProperty wrong structure"));
+ LBasicBlock continuation = FTL_NEW_BLOCK(m_out, ("HasStructureProperty continuation"));
+
+ m_out.branch(m_out.notEqual(
+ m_out.load32(base, m_heaps.JSCell_structureID),
+ m_out.load32(enumerator, m_heaps.JSPropertyNameEnumerator_cachedStructureID)),
+ rarely(wrongStructure), usually(correctStructure));
+
+ LBasicBlock lastNext = m_out.appendTo(correctStructure, wrongStructure);
+ ValueFromBlock correctStructureResult = m_out.anchor(m_out.booleanTrue);
+ m_out.jump(continuation);
+
+ m_out.appendTo(wrongStructure, continuation);
+ ValueFromBlock wrongStructureResult = m_out.anchor(
+ m_out.equal(
+ m_out.constInt64(JSValue::encode(jsBoolean(true))),
+ vmCall(m_out.operation(operationHasGenericProperty), m_callFrame, base, property)));
+ m_out.jump(continuation);
+
+ m_out.appendTo(continuation, lastNext);
+ setBoolean(m_out.phi(m_out.boolean, correctStructureResult, wrongStructureResult));
+ }
+
+ void compileGetDirectPname()
+ {
+ LValue base = lowCell(m_graph.varArgChild(m_node, 0));
+ LValue property = lowCell(m_graph.varArgChild(m_node, 1));
+ LValue index = lowInt32(m_graph.varArgChild(m_node, 2));
+ LValue enumerator = lowCell(m_graph.varArgChild(m_node, 3));
+
+ LBasicBlock checkOffset = FTL_NEW_BLOCK(m_out, ("GetDirectPname check offset"));
+ LBasicBlock inlineLoad = FTL_NEW_BLOCK(m_out, ("GetDirectPname inline load"));
+ LBasicBlock outOfLineLoad = FTL_NEW_BLOCK(m_out, ("GetDirectPname out-of-line load"));
+ LBasicBlock slowCase = FTL_NEW_BLOCK(m_out, ("GetDirectPname slow case"));
+ LBasicBlock continuation = FTL_NEW_BLOCK(m_out, ("GetDirectPname continuation"));
+
+ m_out.branch(m_out.notEqual(
+ m_out.load32(base, m_heaps.JSCell_structureID),
+ m_out.load32(enumerator, m_heaps.JSPropertyNameEnumerator_cachedStructureID)),
+ rarely(slowCase), usually(checkOffset));
+
+ LBasicBlock lastNext = m_out.appendTo(checkOffset, inlineLoad);
+ m_out.branch(m_out.aboveOrEqual(index, m_out.load32(enumerator, m_heaps.JSPropertyNameEnumerator_cachedInlineCapacity)),
+ unsure(outOfLineLoad), unsure(inlineLoad));
+
+ m_out.appendTo(inlineLoad, outOfLineLoad);
+ ValueFromBlock inlineResult = m_out.anchor(
+ m_out.load64(m_out.baseIndex(m_heaps.properties.atAnyNumber(),
+ base, m_out.zeroExt(index, m_out.int64), ScaleEight, JSObject::offsetOfInlineStorage())));
+ m_out.jump(continuation);
+
+ m_out.appendTo(outOfLineLoad, slowCase);
+ LValue storage = m_out.loadPtr(base, m_heaps.JSObject_butterfly);
+ LValue realIndex = m_out.signExt(
+ m_out.neg(m_out.sub(index, m_out.load32(enumerator, m_heaps.JSPropertyNameEnumerator_cachedInlineCapacity))),
+ m_out.int64);
+ int32_t offsetOfFirstProperty = static_cast<int32_t>(offsetInButterfly(firstOutOfLineOffset)) * sizeof(EncodedJSValue);
+ ValueFromBlock outOfLineResult = m_out.anchor(
+ m_out.load64(m_out.baseIndex(m_heaps.properties.atAnyNumber(), storage, realIndex, ScaleEight, offsetOfFirstProperty)));
+ m_out.jump(continuation);
+
+ m_out.appendTo(slowCase, continuation);
+ ValueFromBlock slowCaseResult = m_out.anchor(
+ vmCall(m_out.operation(operationGetByVal), m_callFrame, base, property));
+ m_out.jump(continuation);
+
+ m_out.appendTo(continuation, lastNext);
+ setJSValue(m_out.phi(m_out.int64, inlineResult, outOfLineResult, slowCaseResult));
+ }
+
+ void compileGetEnumerableLength()
+ {
+ LValue base = lowCell(m_node->child1());
+ setInt32(vmCall(m_out.operation(operationGetEnumerableLength), m_callFrame, base));
+ }
+
+ void compileGetStructurePropertyEnumerator()
+ {
+ LValue base = lowCell(m_node->child1());
+ LValue length = lowInt32(m_node->child2());
+ setJSValue(vmCall(m_out.operation(operationGetStructurePropertyEnumerator), m_callFrame, base, length));
+ }
+
+ void compileGetGenericPropertyEnumerator()
+ {
+ LValue base = lowCell(m_node->child1());
+ LValue length = lowInt32(m_node->child2());
+ LValue enumerator = lowCell(m_node->child3());
+ setJSValue(vmCall(m_out.operation(operationGetGenericPropertyEnumerator), m_callFrame, base, length, enumerator));
+ }
+
+ void compileGetEnumeratorPname()
+ {
+ LValue enumerator = lowCell(m_node->child1());
+ LValue index = lowInt32(m_node->child2());
+
+ LBasicBlock inBounds = FTL_NEW_BLOCK(m_out, ("GetEnumeratorPname in bounds"));
+ LBasicBlock outOfBounds = FTL_NEW_BLOCK(m_out, ("GetEnumeratorPname out of bounds"));
+ LBasicBlock continuation = FTL_NEW_BLOCK(m_out, ("GetEnumeratorPname continuation"));
+
+ m_out.branch(m_out.below(index, m_out.load32(enumerator, m_heaps.JSPropertyNameEnumerator_cachedPropertyNamesLength)),
+ usually(inBounds), rarely(outOfBounds));
+
+ LBasicBlock lastNext = m_out.appendTo(inBounds, outOfBounds);
+ LValue storage = m_out.loadPtr(enumerator, m_heaps.JSPropertyNameEnumerator_cachedPropertyNamesVector);
+ ValueFromBlock inBoundsResult = m_out.anchor(
+ m_out.load64(m_out.baseIndex(m_heaps.JSPropertyNameEnumerator_cachedPropertyNamesVector,
+ storage, m_out.signExt(index, m_out.int64), ScaleEight)));
+ m_out.jump(continuation);
+
+ m_out.appendTo(outOfBounds, continuation);
+ ValueFromBlock outOfBoundsResult = m_out.anchor(m_out.constInt64(ValueNull));
+ m_out.jump(continuation);
+
+ m_out.appendTo(continuation, lastNext);
+ setJSValue(m_out.phi(m_out.int64, inBoundsResult, outOfBoundsResult));
+ }
+
+ void compileToIndexString()
+ {
+ LValue index = lowInt32(m_node->child1());
+ setJSValue(vmCall(m_out.operation(operationToIndexString), m_callFrame, index));
+ }
+
</ins><span class="cx"> LValue getFunctionBySymbol(const CString symbol)
</span><span class="cx"> {
</span><span class="cx"> if (!m_ftlState.symbolTable.contains(symbol))
</span></span></pre>
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