Diff
Modified: branches/ftlopt/Source/_javascript_Core/CMakeLists.txt (170381 => 170382)
--- branches/ftlopt/Source/_javascript_Core/CMakeLists.txt 2014-06-24 19:49:25 UTC (rev 170381)
+++ branches/ftlopt/Source/_javascript_Core/CMakeLists.txt 2014-06-24 19:51:11 UTC (rev 170382)
@@ -93,6 +93,7 @@
bytecode/StructureSet.cpp
bytecode/StructureStubClearingWatchpoint.cpp
bytecode/StructureStubInfo.cpp
+ bytecode/ToThisStatus.cpp
bytecode/UnlinkedCodeBlock.cpp
bytecode/UnlinkedInstructionStream.cpp
bytecode/ValueRecovery.cpp
Modified: branches/ftlopt/Source/_javascript_Core/ChangeLog (170381 => 170382)
--- branches/ftlopt/Source/_javascript_Core/ChangeLog 2014-06-24 19:49:25 UTC (rev 170381)
+++ branches/ftlopt/Source/_javascript_Core/ChangeLog 2014-06-24 19:51:11 UTC (rev 170382)
@@ -1,5 +1,33 @@
2014-06-24 Filip Pizlo <fpi...@apple.com>
+ [ftlopt] GC should notify us if it resets to_this
+ https://bugs.webkit.org/show_bug.cgi?id=128231
+
+ Reviewed by Geoffrey Garen.
+
+ * CMakeLists.txt:
+ * _javascript_Core.vcxproj/_javascript_Core.vcxproj:
+ * _javascript_Core.xcodeproj/project.pbxproj:
+ * bytecode/BytecodeList.json:
+ * bytecode/CodeBlock.cpp:
+ (JSC::CodeBlock::dumpBytecode):
+ (JSC::CodeBlock::finalizeUnconditionally):
+ * bytecode/Instruction.h:
+ * bytecode/ToThisStatus.cpp: Added.
+ (JSC::merge):
+ (WTF::printInternal):
+ * bytecode/ToThisStatus.h: Added.
+ * bytecompiler/BytecodeGenerator.cpp:
+ (JSC::BytecodeGenerator::BytecodeGenerator):
+ * dfg/DFGByteCodeParser.cpp:
+ (JSC::DFG::ByteCodeParser::parseBlock):
+ * llint/LowLevelInterpreter32_64.asm:
+ * llint/LowLevelInterpreter64.asm:
+ * runtime/CommonSlowPaths.cpp:
+ (JSC::SLOW_PATH_DECL):
+
+2014-06-24 Filip Pizlo <fpi...@apple.com>
+
[ftlopt] StructureAbstractValue::onlyStructure() should return nullptr if isClobbered()
https://bugs.webkit.org/show_bug.cgi?id=134256
Modified: branches/ftlopt/Source/_javascript_Core/_javascript_Core.vcxproj/_javascript_Core.vcxproj (170381 => 170382)
--- branches/ftlopt/Source/_javascript_Core/_javascript_Core.vcxproj/_javascript_Core.vcxproj 2014-06-24 19:49:25 UTC (rev 170381)
+++ branches/ftlopt/Source/_javascript_Core/_javascript_Core.vcxproj/_javascript_Core.vcxproj 2014-06-24 19:51:11 UTC (rev 170382)
@@ -347,6 +347,7 @@
<ClCompile Include="..\bytecode\StructureSet.cpp" />
<ClCompile Include="..\bytecode\StructureStubClearingWatchpoint.cpp" />
<ClCompile Include="..\bytecode\StructureStubInfo.cpp" />
+ <ClCompile Include="..\bytecode\ToThisStatus.cpp" />
<ClCompile Include="..\bytecode\UnlinkedCodeBlock.cpp" />
<ClCompile Include="..\bytecode\UnlinkedInstructionStream.cpp" />
<ClCompile Include="..\bytecode\ValueRecovery.cpp" />
@@ -890,6 +891,7 @@
<ClInclude Include="..\bytecode\StructureSet.h" />
<ClInclude Include="..\bytecode\StructureStubClearingWatchpoint.h" />
<ClInclude Include="..\bytecode\StructureStubInfo.h" />
+ <ClInclude Include="..\bytecode\ToThisStatus.h" />
<ClInclude Include="..\bytecode\UnlinkedCodeBlock.h" />
<ClInclude Include="..\bytecode\UnlinkedInstructionStream.h" />
<ClInclude Include="..\bytecode\ValueProfile.h" />
Modified: branches/ftlopt/Source/_javascript_Core/_javascript_Core.xcodeproj/project.pbxproj (170381 => 170382)
--- branches/ftlopt/Source/_javascript_Core/_javascript_Core.xcodeproj/project.pbxproj 2014-06-24 19:49:25 UTC (rev 170381)
+++ branches/ftlopt/Source/_javascript_Core/_javascript_Core.xcodeproj/project.pbxproj 2014-06-24 19:51:11 UTC (rev 170382)
@@ -355,6 +355,8 @@
0F766D3815AE4A1C008F363E /* StructureStubClearingWatchpoint.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 0F766D3615AE4A1A008F363E /* StructureStubClearingWatchpoint.cpp */; };
0F766D3915AE4A1F008F363E /* StructureStubClearingWatchpoint.h in Headers */ = {isa = PBXBuildFile; fileRef = 0F766D3715AE4A1A008F363E /* StructureStubClearingWatchpoint.h */; settings = {ATTRIBUTES = (Private, ); }; };
0F7700921402FF3C0078EB39 /* SamplingCounter.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 0F7700911402FF280078EB39 /* SamplingCounter.cpp */; };
+ 0F7AB82E1958DA1C00C6881F /* ToThisStatus.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 0F7AB82C1958DA1C00C6881F /* ToThisStatus.cpp */; };
+ 0F7AB82F1958DA1C00C6881F /* ToThisStatus.h in Headers */ = {isa = PBXBuildFile; fileRef = 0F7AB82D1958DA1C00C6881F /* ToThisStatus.h */; settings = {ATTRIBUTES = (Private, ); }; };
0F7B294B14C3CD2F007C3DB1 /* DFGCapabilities.h in Headers */ = {isa = PBXBuildFile; fileRef = 0FD82E1F14172C2F00179C94 /* DFGCapabilities.h */; settings = {ATTRIBUTES = (Private, ); }; };
0F7B294D14C3CD4C007C3DB1 /* DFGCommon.h in Headers */ = {isa = PBXBuildFile; fileRef = 0FC0977E1469EBC400CF2442 /* DFGCommon.h */; settings = {ATTRIBUTES = (Private, ); }; };
0F8023EA1613832B00A0BA45 /* ByValInfo.h in Headers */ = {isa = PBXBuildFile; fileRef = 0F8023E91613832300A0BA45 /* ByValInfo.h */; settings = {ATTRIBUTES = (Private, ); }; };
@@ -2522,6 +2524,8 @@
0F766D3715AE4A1A008F363E /* StructureStubClearingWatchpoint.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = StructureStubClearingWatchpoint.h; sourceTree = "<group>"; };
0F77008E1402FDD60078EB39 /* SamplingCounter.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = SamplingCounter.h; sourceTree = "<group>"; };
0F7700911402FF280078EB39 /* SamplingCounter.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = SamplingCounter.cpp; sourceTree = "<group>"; };
+ 0F7AB82C1958DA1C00C6881F /* ToThisStatus.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = ToThisStatus.cpp; sourceTree = "<group>"; };
+ 0F7AB82D1958DA1C00C6881F /* ToThisStatus.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = ToThisStatus.h; sourceTree = "<group>"; };
0F8023E91613832300A0BA45 /* ByValInfo.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = ByValInfo.h; sourceTree = "<group>"; };
0F8335B41639C1E3001443B5 /* ArrayAllocationProfile.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = ArrayAllocationProfile.cpp; sourceTree = "<group>"; };
0F8335B51639C1E3001443B5 /* ArrayAllocationProfile.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = ArrayAllocationProfile.h; sourceTree = "<group>"; };
@@ -5420,6 +5424,8 @@
0F766D3715AE4A1A008F363E /* StructureStubClearingWatchpoint.h */,
BCCF0D0B0EF0B8A500413C8F /* StructureStubInfo.cpp */,
BCCF0D070EF0AAB900413C8F /* StructureStubInfo.h */,
+ 0F7AB82C1958DA1C00C6881F /* ToThisStatus.cpp */,
+ 0F7AB82D1958DA1C00C6881F /* ToThisStatus.h */,
A79E781E15EECBA80047C855 /* UnlinkedCodeBlock.cpp */,
A79E781F15EECBA80047C855 /* UnlinkedCodeBlock.h */,
B59F89381891ADB500D5CCDC /* UnlinkedInstructionStream.cpp */,
@@ -6262,6 +6268,7 @@
A5840E21187B7B8600843B10 /* InjectedScriptModule.h in Headers */,
A513E5C7185F9446007E95AD /* InjectedScriptSource.h in Headers */,
A5840E29187CA5E600843B10 /* inline-and-minify-stylesheets-and-scripts.py in Headers */,
+ 0F7AB82F1958DA1C00C6881F /* ToThisStatus.h in Headers */,
0F24E55617F0B71C00ABB217 /* InlineCallFrameSet.h in Headers */,
99E45A2718A1B2590026D88F /* InputCursor.h in Headers */,
A593CF7F1840362C00BFCE27 /* InspectorAgentBase.h in Headers */,
@@ -7923,6 +7930,7 @@
0FCEFACD1805E75500472CE4 /* LLVMAPI.cpp in Sources */,
A7E5AB371799E4B200D2833D /* LLVMDisassembler.cpp in Sources */,
0F4CED5E18CEA7AB00802FE0 /* PolymorphicGetByIdList.cpp in Sources */,
+ 0F7AB82E1958DA1C00C6881F /* ToThisStatus.cpp in Sources */,
14469DDE107EC7E700650446 /* Lookup.cpp in Sources */,
0F4680CC14BBB17A00BFE272 /* LowLevelInterpreter.cpp in Sources */,
14B723B212D7DA46003BD5ED /* MachineStackMarker.cpp in Sources */,
Modified: branches/ftlopt/Source/_javascript_Core/bytecode/BytecodeList.json (170381 => 170382)
--- branches/ftlopt/Source/_javascript_Core/bytecode/BytecodeList.json 2014-06-24 19:49:25 UTC (rev 170381)
+++ branches/ftlopt/Source/_javascript_Core/bytecode/BytecodeList.json 2014-06-24 19:51:11 UTC (rev 170382)
@@ -10,7 +10,7 @@
{ "name" : "op_create_arguments", "length" : 2 },
{ "name" : "op_create_this", "length" : 4 },
{ "name" : "op_get_callee", "length" : 3 },
- { "name" : "op_to_this", "length" : 3 },
+ { "name" : "op_to_this", "length" : 4 },
{ "name" : "op_new_object", "length" : 4 },
{ "name" : "op_new_array", "length" : 5 },
{ "name" : "op_new_array_with_size", "length" : 4 },
Modified: branches/ftlopt/Source/_javascript_Core/bytecode/CodeBlock.cpp (170381 => 170382)
--- branches/ftlopt/Source/_javascript_Core/bytecode/CodeBlock.cpp 2014-06-24 19:49:25 UTC (rev 170381)
+++ branches/ftlopt/Source/_javascript_Core/bytecode/CodeBlock.cpp 2014-06-24 19:51:11 UTC (rev 170382)
@@ -780,6 +780,7 @@
Structure* structure = (++it)->u.structure.get();
if (structure)
out.print(" cache(struct = ", RawPointer(structure), ")");
+ out.print(" ", (++it)->u.toThisStatus);
break;
}
case op_new_object: {
@@ -2322,6 +2323,8 @@
if (Options::verboseOSR())
dataLogF("Clearing LLInt to_this with structure %p.\n", curInstruction[2].u.structure.get());
curInstruction[2].u.structure.clear();
+ curInstruction[3].u.toThisStatus = merge(
+ curInstruction[3].u.toThisStatus, ToThisClearedByGC);
break;
case op_get_callee:
if (!curInstruction[2].u.jsCell || Heap::isMarked(curInstruction[2].u.jsCell.get()))
Modified: branches/ftlopt/Source/_javascript_Core/bytecode/Instruction.h (170381 => 170382)
--- branches/ftlopt/Source/_javascript_Core/bytecode/Instruction.h 2014-06-24 19:49:25 UTC (rev 170381)
+++ branches/ftlopt/Source/_javascript_Core/bytecode/Instruction.h 2014-06-24 19:51:11 UTC (rev 170382)
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2008, 2012, 2013 Apple Inc. All rights reserved.
+ * Copyright (C) 2008, 2012, 2013, 2014 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@@ -35,6 +35,7 @@
#include "SpecialPointer.h"
#include "Structure.h"
#include "StructureChain.h"
+#include "ToThisStatus.h"
#include "VirtualRegister.h"
#include <wtf/VectorTraits.h>
@@ -118,6 +119,7 @@
WriteBarrierBase<JSActivation> activation;
void* pointer;
bool* predicatePointer;
+ ToThisStatus toThisStatus;
} u;
private:
Added: branches/ftlopt/Source/_javascript_Core/bytecode/ToThisStatus.cpp (0 => 170382)
--- branches/ftlopt/Source/_javascript_Core/bytecode/ToThisStatus.cpp (rev 0)
+++ branches/ftlopt/Source/_javascript_Core/bytecode/ToThisStatus.cpp 2014-06-24 19:51:11 UTC (rev 170382)
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2014 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 "config.h"
+#include "ToThisStatus.h"
+
+namespace JSC {
+
+ToThisStatus merge(ToThisStatus a, ToThisStatus b)
+{
+ switch (a) {
+ case ToThisOK:
+ return b;
+ case ToThisConflicted:
+ return ToThisConflicted;
+ case ToThisClearedByGC:
+ if (b == ToThisConflicted)
+ return ToThisConflicted;
+ return ToThisClearedByGC;
+ }
+
+ RELEASE_ASSERT_NOT_REACHED();
+ return ToThisConflicted;
+}
+
+} // namespace JSC
+
+namespace WTF {
+
+using namespace JSC;
+
+void printInternal(PrintStream& out, ToThisStatus status)
+{
+ switch (status) {
+ case ToThisOK:
+ out.print("OK");
+ return;
+ case ToThisConflicted:
+ out.print("Conflicted");
+ return;
+ case ToThisClearedByGC:
+ out.print("ClearedByGC");
+ return;
+ }
+
+ RELEASE_ASSERT_NOT_REACHED();
+}
+
+} // namespace WTF
+
Added: branches/ftlopt/Source/_javascript_Core/bytecode/ToThisStatus.h (0 => 170382)
--- branches/ftlopt/Source/_javascript_Core/bytecode/ToThisStatus.h (rev 0)
+++ branches/ftlopt/Source/_javascript_Core/bytecode/ToThisStatus.h 2014-06-24 19:51:11 UTC (rev 170382)
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2014 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 ToThisStatus_h
+#define ToThisStatus_h
+
+#include <wtf/PrintStream.h>
+
+namespace JSC {
+
+enum ToThisStatus {
+ ToThisOK,
+ ToThisConflicted,
+ ToThisClearedByGC
+};
+
+ToThisStatus merge(ToThisStatus, ToThisStatus);
+
+} // namespace JSC
+
+namespace WTF {
+
+void printInternal(PrintStream&, JSC::ToThisStatus);
+
+} // namespace WTF
+
+#endif // ToThisStatus_h
+
Modified: branches/ftlopt/Source/_javascript_Core/bytecompiler/BytecodeGenerator.cpp (170381 => 170382)
--- branches/ftlopt/Source/_javascript_Core/bytecompiler/BytecodeGenerator.cpp 2014-06-24 19:49:25 UTC (rev 170381)
+++ branches/ftlopt/Source/_javascript_Core/bytecompiler/BytecodeGenerator.cpp 2014-06-24 19:51:11 UTC (rev 170382)
@@ -410,6 +410,7 @@
emitOpcode(op_to_this);
instructions().append(kill(&m_thisRegister));
instructions().append(0);
+ instructions().append(0);
}
}
Modified: branches/ftlopt/Source/_javascript_Core/dfg/DFGByteCodeParser.cpp (170381 => 170382)
--- branches/ftlopt/Source/_javascript_Core/dfg/DFGByteCodeParser.cpp 2014-06-24 19:49:25 UTC (rev 170381)
+++ branches/ftlopt/Source/_javascript_Core/dfg/DFGByteCodeParser.cpp 2014-06-24 19:51:11 UTC (rev 170382)
@@ -2012,7 +2012,8 @@
Node* op1 = getThis();
if (op1->op() != ToThis) {
Structure* cachedStructure = currentInstruction[2].u.structure.get();
- if (!cachedStructure
+ if (currentInstruction[2].u.toThisStatus != ToThisOK
+ || !cachedStructure
|| cachedStructure->classInfo()->methodTable.toThis != JSObject::info()->methodTable.toThis
|| m_inlineStackTop->m_profiledBlock->couldTakeSlowCase(m_currentIndex)
|| m_inlineStackTop->m_exitProfile.hasExitSite(m_currentIndex, BadCache)
Modified: branches/ftlopt/Source/_javascript_Core/llint/LowLevelInterpreter32_64.asm (170381 => 170382)
--- branches/ftlopt/Source/_javascript_Core/llint/LowLevelInterpreter32_64.asm 2014-06-24 19:49:25 UTC (rev 170381)
+++ branches/ftlopt/Source/_javascript_Core/llint/LowLevelInterpreter32_64.asm 2014-06-24 19:51:11 UTC (rev 170382)
@@ -760,11 +760,11 @@
bbneq JSCell::m_type[t0], FinalObjectType, .opToThisSlow
loadpFromInstruction(2, t2)
bpneq JSCell::m_structureID[t0], t2, .opToThisSlow
- dispatch(3)
+ dispatch(4)
.opToThisSlow:
callSlowPath(_slow_path_to_this)
- dispatch(3)
+ dispatch(4)
_llint_op_new_object:
Modified: branches/ftlopt/Source/_javascript_Core/llint/LowLevelInterpreter64.asm (170381 => 170382)
--- branches/ftlopt/Source/_javascript_Core/llint/LowLevelInterpreter64.asm 2014-06-24 19:49:25 UTC (rev 170381)
+++ branches/ftlopt/Source/_javascript_Core/llint/LowLevelInterpreter64.asm 2014-06-24 19:51:11 UTC (rev 170382)
@@ -622,11 +622,11 @@
loadStructureWithScratch(t0, t1, t2)
loadpFromInstruction(2, t2)
bpneq t1, t2, .opToThisSlow
- dispatch(3)
+ dispatch(4)
.opToThisSlow:
callSlowPath(_slow_path_to_this)
- dispatch(3)
+ dispatch(4)
_llint_op_new_object:
Modified: branches/ftlopt/Source/_javascript_Core/runtime/CommonSlowPaths.cpp (170381 => 170382)
--- branches/ftlopt/Source/_javascript_Core/runtime/CommonSlowPaths.cpp 2014-06-24 19:49:25 UTC (rev 170381)
+++ branches/ftlopt/Source/_javascript_Core/runtime/CommonSlowPaths.cpp 2014-06-24 19:51:11 UTC (rev 170382)
@@ -251,10 +251,18 @@
{
BEGIN();
JSValue v1 = OP(1).jsValue();
- if (v1.isCell())
- pc[2].u.structure.set(vm, exec->codeBlock()->ownerExecutable(), v1.asCell()->structure(vm));
- else
+ if (v1.isCell()) {
+ Structure* myStructure = v1.asCell()->structure(vm);
+ Structure* otherStructure = pc[2].u.structure.get();
+ if (myStructure != otherStructure) {
+ if (otherStructure)
+ pc[3].u.toThisStatus = ToThisConflicted;
+ pc[2].u.structure.set(vm, exec->codeBlock()->ownerExecutable(), myStructure);
+ }
+ } else {
+ pc[3].u.toThisStatus = ToThisConflicted;
pc[2].u.structure.clear();
+ }
RETURN(v1.toThis(exec, exec->codeBlock()->isStrictMode() ? StrictMode : NotStrictMode));
}
