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LibJS: Start fleshing out a bytecode for the JavaScript engine :^)
This patch begins the work of implementing JavaScript execution in a bytecode VM instead of an AST tree-walk interpreter. It's probably quite naive, but we have to start somewhere. The basic idea is that you call Bytecode::Generator::generate() on an AST node and it hands you back a Bytecode::Block filled with instructions that can then be interpreted by a Bytecode::Interpreter. This first version only implements two instructions: Load and Add. :^) Each bytecode block has infinity registers, and the interpreter resizes its register file to fit the block being executed. Two new `js` options are added in this patch as well: `-d` will dump the generated bytecode `-b` will execute the generated bytecode Note that unless `-d` and/or `-b` are specified, none of the bytecode related stuff in LibJS runs at all. This is implemented in parallel with the existing AST interpreter. :^)
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16 changed files with 487 additions and 24 deletions
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set(SOURCES
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AST.cpp
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Console.cpp
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Heap/CellAllocator.cpp
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Heap/BlockAllocator.cpp
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Heap/Handle.cpp
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Heap/HeapBlock.cpp
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Heap/Heap.cpp
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Interpreter.cpp
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Lexer.cpp
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MarkupGenerator.cpp
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Parser.cpp
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Runtime/Array.cpp
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Runtime/ArrayBuffer.cpp
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Runtime/ArrayBufferConstructor.cpp
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Runtime/ArrayBufferPrototype.cpp
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Runtime/ArrayConstructor.cpp
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Runtime/ArrayIterator.cpp
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Runtime/ArrayIteratorPrototype.cpp
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Runtime/ArrayPrototype.cpp
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Runtime/BigInt.cpp
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Runtime/BigIntConstructor.cpp
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AST.cpp
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Bytecode/Block.cpp
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Bytecode/Generator.cpp
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Bytecode/Instruction.cpp
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Bytecode/Interpreter.cpp
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Bytecode/Op.cpp
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Console.cpp
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Heap/CellAllocator.cpp
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Heap/BlockAllocator.cpp
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Heap/Handle.cpp
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Heap/HeapBlock.cpp
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Heap/Heap.cpp
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Interpreter.cpp
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Lexer.cpp
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MarkupGenerator.cpp
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Parser.cpp
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Runtime/Array.cpp
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Runtime/ArrayBuffer.cpp
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Runtime/ArrayBufferConstructor.cpp
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Runtime/ArrayBufferPrototype.cpp
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Runtime/ArrayConstructor.cpp
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Runtime/ArrayIterator.cpp
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Runtime/ArrayIteratorPrototype.cpp
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Runtime/ArrayPrototype.cpp
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Runtime/BigInt.cpp
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Runtime/BigIntConstructor.cpp
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Runtime/BigIntObject.cpp
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Runtime/BigIntPrototype.cpp
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Runtime/BooleanConstructor.cpp
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