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LibJS/JIT: Compile the JumpUndefined instruction
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2 changed files with 18 additions and 0 deletions
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@ -212,6 +212,23 @@ void Compiler::compile_jump_nullish(Bytecode::Op::JumpNullish const& op)
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m_assembler.jump(label_for(op.false_target()->block()));
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}
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void Compiler::compile_jump_undefined(Bytecode::Op::JumpUndefined const& op)
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{
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load_vm_register(GPR0, Bytecode::Register::accumulator());
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m_assembler.shift_right(
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Assembler::Operand::Register(GPR0),
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Assembler::Operand::Imm(48));
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m_assembler.jump_if(
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Assembler::Operand::Register(GPR0),
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Assembler::Condition::EqualTo,
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Assembler::Operand::Imm(UNDEFINED_TAG),
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label_for(op.true_target()->block()));
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m_assembler.jump(label_for(op.false_target()->block()));
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}
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[[maybe_unused]] static Value cxx_increment(VM& vm, Value value)
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{
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auto old_value = TRY_OR_SET_EXCEPTION(value.to_numeric(vm));
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