Andreas Kling 7ffe01cee3 LibJS: Split builtin call bytecode opcodes ...

Replace the generic CallBuiltin instruction with one opcode per
supported builtin call and make those instructions fixed-size by
arity. This removes the builtin dispatch sled in the asm
interpreter, gives each builtin a dedicated slow-path entry point,
and lets bytecode generation encode the callee shape directly.

Keep the existing handwritten asm fast paths for the Math builtins
that already benefit from them, while routing the other builtin
opcodes through their own C++ execute implementations. Build the
new opcode directly in Rust codegen, and keep the generic call
fallback when the original builtin function has been replaced.

2026-04-12 19:15:50 +02:00

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