Jose Luis Montañes Ojados 4442886afa Add bytecode VM backend (compile AST to bytecodes + stack-based VM) ...

New execution mode: ./run vm <file.j> compiles AST to bytecodes and
runs them in a while/switch loop. Ints/floats live on the stack (no
heap allocation), ~7.7x faster than the tree-walking interpreter.

Implements: opcodes, compiler with backpatching (if/while), stack VM
with arithmetic, comparisons, variables, strings, and print/println.
Reorganizes backend into src/backend/eval/ and src/backend/bytecode/.

2026-02-18 01:01:22 +01:00

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