Reviewed by Geoff Garen.

        Bug 21541: Move RegisterFile growth check to callee
        <https://bugs.webkit.org/show_bug.cgi?id=21541>

        Move the RegisterFile growth check to the callee in the common case,
        where some of the information is known statically at JIT time. There is
        still a check in the caller in the case where the caller provides too
        few arguments.

        This is a 2.1% speedup on the V8 benchmark, including a 5.1% speedup on
        the Richards benchmark, a 4.1% speedup on the DeltaBlue benchmark, and a
        1.4% speedup on the Earley-Boyer benchmark. It is also a 0.5% speedup on
        SunSpider.

        * VM/CTI.cpp:
        (JSC::CTI::privateCompile):
        * VM/Machine.cpp:
        (JSC::Machine::cti_register_file_check):
        (JSC::Machine::cti_op_call_JSFunction):
        (JSC::Machine::cti_op_construct_JSConstruct):
        * VM/Machine.h:
        * VM/RegisterFile.h:
        * masm/X86Assembler.h:
        (JSC::X86Assembler::):
        (JSC::X86Assembler::cmpl_mr):
        (JSC::X86Assembler::emitUnlinkedJg):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@37570 268f45cc-cd09-0410-ab3c-d52691b4dbfc