2008-10-17 Maciej Stachowiak <mjs@apple.com>

2008-10-17  Maciej Stachowiak  <mjs@apple.com>

        Reviewed by Cameron Zwarich.

        - speed up transitions that resize the property storage a fair bit

        ~3% speedup on v8 RayTrace benchmark, ~1% on DeltaBlue

        * VM/CTI.cpp:
        (JSC::resizePropertyStorage): renamed from transitionObject, and reduced to just resize
        the object's property storage with one inline call.
        (JSC::CTI::privateCompilePutByIdTransition): Use a separate function for property storage
        resize, but still do all the rest of the work in assembly in that case, and pass the known
        compile-time constants of old and new size rather than structureIDs, saving a bunch of
        redundant memory access.
        * kjs/JSObject.cpp:
        (JSC::JSObject::allocatePropertyStorage): Just call the inline version.
        * kjs/JSObject.h:
        (JSC::JSObject::allocatePropertyStorageInline): Inline version of allocatePropertyStorage
        * masm/X86Assembler.h:
        (JSC::X86Assembler::):
        (JSC::X86Assembler::pushl_i32): Add code to assmeble push of a constant; code originally by Cameron Zwarich.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@37653 268f45cc-cd09-0410-ab3c-d52691b4dbfc