The baseline JIT in the /jit directory is basically a template code generator. There is little cross instruction optimization – the last result is typically left mapped into registers, and some extremely limited static type information is propagated between some bytecode ops. But if you're looking for a more interesting code generation path you may want to poke about in the /dfg directory. On Dec 27, 2011, at 11:57 AM, wingoog moon wrote:

Hi Tring to understand SFX aritecture and I have found these functions JIT::privateCompileMainPass() JIT::privateCompileSlowCases() in http://trac.webkit.org/browser/trunk/Source/JavaScriptCore/jit/JIT.cpp. So as I understand each instruction is executed seperatly from others. It seems that JIT works tha way as interpretator does. What the difference between SFX JIT and SFX interpretor, exept that JIT keep cashed copies of functions. thanks for attention!

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