Extract the allocation profile from JSFunction into a rare object

Extract the allocation profile from JSFunction into a rare object
https://bugs.webkit.org/show_bug.cgi?id=143807
.:

Patch by Basile Clement <basile_clement@apple.com> on 2015-04-16
Reviewed by Filip Pizlo.

* WebKit.xcworkspace/contents.xcworkspacedata:

Source/JavaScriptCore:

Patch by Basile Clement <basile_clement@apple.com> on 2015-04-16
Reviewed by Filip Pizlo.

The allocation profile is only needed for those functions that are used
to create objects with [new].
Extracting it into its own JSCell removes the need for JSFunction and
JSCallee to be JSDestructibleObjects, which should improve performances in most
cases at the cost of an extra pointer dereference when the allocation profile
is actually needed.

* CMakeLists.txt:
* JavaScriptCore.vcxproj/JavaScriptCore.vcxproj:
* JavaScriptCore.vcxproj/JavaScriptCore.vcxproj.filters:
* JavaScriptCore.xcodeproj/project.pbxproj:
* dfg/DFGOperations.cpp:
* dfg/DFGSpeculativeJIT32_64.cpp:
(JSC::DFG::SpeculativeJIT::compile):
* dfg/DFGSpeculativeJIT64.cpp:
(JSC::DFG::SpeculativeJIT::compile):
* jit/JITOpcodes.cpp:
(JSC::JIT::emit_op_create_this):
* jit/JITOpcodes32_64.cpp:
(JSC::JIT::emit_op_create_this):
* llint/LowLevelInterpreter32_64.asm:
* llint/LowLevelInterpreter64.asm:
* runtime/CommonSlowPaths.cpp:
(JSC::SLOW_PATH_DECL):
* runtime/FunctionRareData.cpp: Added.
(JSC::FunctionRareData::create):
(JSC::FunctionRareData::destroy):
(JSC::FunctionRareData::createStructure):
(JSC::FunctionRareData::visitChildren):
(JSC::FunctionRareData::FunctionRareData):
(JSC::FunctionRareData::~FunctionRareData):
(JSC::FunctionRareData::finishCreation):
* runtime/FunctionRareData.h: Added.
(JSC::FunctionRareData::offsetOfAllocationProfile):
(JSC::FunctionRareData::allocationProfile):
(JSC::FunctionRareData::allocationStructure):
(JSC::FunctionRareData::allocationProfileWatchpointSet):
* runtime/JSBoundFunction.cpp:
(JSC::JSBoundFunction::destroy): Deleted.
* runtime/JSBoundFunction.h:
* runtime/JSCallee.cpp:
(JSC::JSCallee::destroy): Deleted.
* runtime/JSCallee.h:
* runtime/JSFunction.cpp:
(JSC::JSFunction::JSFunction):
(JSC::JSFunction::createRareData):
(JSC::JSFunction::visitChildren):
(JSC::JSFunction::put):
(JSC::JSFunction::defineOwnProperty):
(JSC::JSFunction::destroy): Deleted.
(JSC::JSFunction::createAllocationProfile): Deleted.
* runtime/JSFunction.h:
(JSC::JSFunction::offsetOfRareData):
(JSC::JSFunction::rareData):
(JSC::JSFunction::allocationStructure):
(JSC::JSFunction::allocationProfileWatchpointSet):
(JSC::JSFunction::offsetOfAllocationProfile): Deleted.
(JSC::JSFunction::allocationProfile): Deleted.
* runtime/JSFunctionInlines.h:
(JSC::JSFunction::JSFunction):
* runtime/VM.cpp:
(JSC::VM::VM):
* runtime/VM.h:

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@182899 268f45cc-cd09-0410-ab3c-d52691b4dbfc