https://bugs.webkit.org/show_bug.cgi?id=125294.

Reviewed by Michael Saboff.

1. Changed the C Loop LLINT to dispatch to an Executable via its JITCode
   instance which is consistent with how the ASM LLINT works.
2. Changed CLoop::execute() to take an Opcode instead of an OpcodeID.
   This makes it play nice with the use of JITCode for dispatching.
3. Introduce a callToJavaScript and callToNativeFunction for the C Loop
   LLINT. These will call JSStack::pushFrame() and popFrame() to setup
   and teardown the CallFrame.
4. Also introduced a C Loop returnFromJavaScript which is just a
   replacement for ctiOpThrowNotCaught which had the same function.
5. Remove a lot of #if ENABLE(LLINT_C_LOOP) code now that the dispatch
   mechanism is consistent.

This patch has been tested with both configurations of COMPUTED_GOTOs
on and off.

* interpreter/CachedCall.h:
(JSC::CachedCall::CachedCall):
(JSC::CachedCall::call):
(JSC::CachedCall::setArgument):
* interpreter/CallFrameClosure.h:
(JSC::CallFrameClosure::setThis):
(JSC::CallFrameClosure::setArgument):
(JSC::CallFrameClosure::resetCallFrame):
* interpreter/Interpreter.cpp:
(JSC::Interpreter::execute):
(JSC::Interpreter::executeCall):
(JSC::Interpreter::executeConstruct):
(JSC::Interpreter::prepareForRepeatCall):
* interpreter/Interpreter.h:
* interpreter/JSStack.h:
* interpreter/JSStackInlines.h:
(JSC::JSStack::pushFrame):
* interpreter/ProtoCallFrame.h:
(JSC::ProtoCallFrame::scope):
(JSC::ProtoCallFrame::callee):
(JSC::ProtoCallFrame::thisValue):
(JSC::ProtoCallFrame::argument):
(JSC::ProtoCallFrame::setArgument):
* jit/JITCode.cpp:
(JSC::JITCode::execute):
* jit/JITCode.h:
* jit/JITExceptions.cpp:
(JSC::genericUnwind):
* llint/LLIntCLoop.cpp:
(JSC::LLInt::CLoop::initialize):
* llint/LLIntCLoop.h:
* llint/LLIntEntrypoint.cpp:
(JSC::LLInt::setFunctionEntrypoint):
(JSC::LLInt::setEvalEntrypoint):
(JSC::LLInt::setProgramEntrypoint):
- Inverted the check for vm.canUseJIT(). This allows the JIT case to be
  #if'd out nicely when building the C Loop LLINT.
* llint/LLIntOpcode.h:
* llint/LLIntThunks.cpp:
(JSC::doCallToJavaScript):
(JSC::executeJS):
(JSC::callToJavaScript):
(JSC::executeNative):
(JSC::callToNativeFunction):
* llint/LLIntThunks.h:
* llint/LowLevelInterpreter.cpp:
(JSC::CLoop::execute):
* runtime/Executable.h:
(JSC::ExecutableBase::offsetOfNumParametersFor):
(JSC::ExecutableBase::hostCodeEntryFor):
(JSC::ExecutableBase::jsCodeEntryFor):
(JSC::ExecutableBase::jsCodeWithArityCheckEntryFor):
(JSC::NativeExecutable::create):
(JSC::NativeExecutable::finishCreation):
(JSC::ProgramExecutable::generatedJITCode):
* runtime/JSArray.cpp:
(JSC::AVLTreeAbstractorForArrayCompare::compare_key_key):
* runtime/StringPrototype.cpp:
(JSC::replaceUsingRegExpSearch):
* runtime/VM.cpp:
(JSC::VM::getHostFunction):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@160186 268f45cc-cd09-0410-ab3c-d52691b4dbfc