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LibJS: Add LessThan bytecode instruction :^)

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This commit is contained in:
Andreas Kling 2021-06-04 12:03:57 +02:00
parent 6d66cdc668
commit 91640d0727
3 changed files with 32 additions and 0 deletions
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3
Userland/Libraries/LibJS/Bytecode/ASTCodegen.cpp
View file

@ -48,6 +48,9 @@ Optional<Bytecode::Register> BinaryExpression::generate_bytecode(Bytecode::Gener
case BinaryOp::Subtraction:
generator.emit<Bytecode::Op::Sub>(dst_reg, *lhs_reg, *rhs_reg);
return dst_reg;
case BinaryOp::LessThan:
generator.emit<Bytecode::Op::LessThan>(dst_reg, *lhs_reg, *rhs_reg);
return dst_reg;
default:
TODO();
}

10
Userland/Libraries/LibJS/Bytecode/Op.cpp
View file

@ -26,6 +26,11 @@ void Sub::execute(Bytecode::Interpreter& interpreter) const
interpreter.reg(m_dst) = sub(interpreter.global_object(), interpreter.reg(m_src1), interpreter.reg(m_src2));
}
void LessThan::execute(Bytecode::Interpreter& interpreter) const
{
interpreter.reg(m_dst) = less_than(interpreter.global_object(), interpreter.reg(m_src1), interpreter.reg(m_src2));
}
void NewString::execute(Bytecode::Interpreter& interpreter) const
{
interpreter.reg(m_dst) = js_string(interpreter.vm(), m_string);
@ -56,6 +61,11 @@ String Sub::to_string() const
return String::formatted("Sub dst:{}, src1:{}, src2:{}", m_dst, m_src1, m_src2);
}
String LessThan::to_string() const
{
return String::formatted("LessThan dst:{}, src1:{}, src2:{}", m_dst, m_src1, m_src2);
}
String NewString::to_string() const
{
return String::formatted("NewString dst:{}, string:\"{}\"", m_dst, m_string);

19
Userland/Libraries/LibJS/Bytecode/Op.h
View file

@ -69,6 +69,25 @@ private:
Register m_src2;
};
class LessThan final : public Instruction {
public:
LessThan(Register dst, Register src1, Register src2)
: m_dst(dst)
, m_src1(src1)
, m_src2(src2)
{
}
virtual ~LessThan() override { }
virtual void execute(Bytecode::Interpreter&) const override;
virtual String to_string() const override;
private:
Register m_dst;
Register m_src1;
Register m_src2;
};
class NewString final : public Instruction {
public:
NewString(Register dst, String string)