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LibJS: Add bytecode ops for <<, >> and >>>

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This commit is contained in:
Luke 2021-06-07 20:14:12 +01:00 • committed by Andreas Kling
parent 6681415f58
commit 1e10965e61
4 changed files with 100 additions and 1 deletions
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9
Userland/Libraries/LibJS/Bytecode/ASTCodegen.cpp
View file

@ -99,6 +99,15 @@ Optional<Bytecode::Register> BinaryExpression::generate_bytecode(Bytecode::Gener
case BinaryOp::BitwiseXor:
generator.emit<Bytecode::Op::BitwiseXor>(dst_reg, *lhs_reg, *rhs_reg);
return dst_reg;
case BinaryOp::LeftShift:
generator.emit<Bytecode::Op::LeftShift>(dst_reg, *lhs_reg, *rhs_reg);
return dst_reg;
case BinaryOp::RightShift:
generator.emit<Bytecode::Op::RightShift>(dst_reg, *lhs_reg, *rhs_reg);
return dst_reg;
case BinaryOp::UnsignedRightShift:
generator.emit<Bytecode::Op::UnsignedRightShift>(dst_reg, *lhs_reg, *rhs_reg);
return dst_reg;
default:
TODO();
}

5
Userland/Libraries/LibJS/Bytecode/Instruction.h
View file

@ -44,7 +44,10 @@
O(Not) \
O(UnaryPlus) \
O(UnaryMinus) \
O(Typeof)
O(Typeof) \
O(LeftShift) \
O(RightShift) \
O(UnsignedRightShift)
namespace JS::Bytecode {

30
Userland/Libraries/LibJS/Bytecode/Op.cpp
View file

@ -142,6 +142,21 @@ void BitwiseNot::execute(Bytecode::Interpreter& interpreter) const
interpreter.reg(m_dst) = bitwise_not(interpreter.global_object(), interpreter.reg(m_src));
}
void LeftShift::execute(Bytecode::Interpreter& interpreter) const
{
interpreter.reg(m_dst) = left_shift(interpreter.global_object(), interpreter.reg(m_src1), interpreter.reg(m_src2));
}
void RightShift::execute(Bytecode::Interpreter& interpreter) const
{
interpreter.reg(m_dst) = right_shift(interpreter.global_object(), interpreter.reg(m_src1), interpreter.reg(m_src2));
}
void UnsignedRightShift::execute(Bytecode::Interpreter& interpreter) const
{
interpreter.reg(m_dst) = unsigned_right_shift(interpreter.global_object(), interpreter.reg(m_src1), interpreter.reg(m_src2));
}
void Not::execute(Bytecode::Interpreter& interpreter) const
{
interpreter.reg(m_dst) = Value(!interpreter.reg(m_src).to_boolean());
@ -354,6 +369,21 @@ String BitwiseXor::to_string() const
return String::formatted("BitwiseXor dst:{}, src1:{}, src2:{}", m_dst, m_src1, m_src2);
}
String LeftShift::to_string() const
{
return String::formatted("LeftShift dst:{}, src1:{}, src2:{}", m_dst, m_src1, m_src2);
}
String RightShift::to_string() const
{
return String::formatted("RightShift dst:{}, src1:{}, src2:{}", m_dst, m_src1, m_src2);
}
String UnsignedRightShift::to_string() const
{
return String::formatted("UnsignedRightShift dst:{}, src1:{}, src2:{}", m_dst, m_src1, m_src2);
}
String BitwiseNot::to_string() const
{
return String::formatted("BitwiseNot dst:{}, src:{}", m_dst, m_src);

57
Userland/Libraries/LibJS/Bytecode/Op.h
View file

@ -355,6 +355,63 @@ private:
Register m_src2;
};
class LeftShift final : public Instruction {
public:
LeftShift(Register dst, Register src1, Register src2)
: Instruction(Type::LeftShift)
, m_dst(dst)
, m_src1(src1)
, m_src2(src2)
{
}
void execute(Bytecode::Interpreter&) const;
String to_string() const;
private:
Register m_dst;
Register m_src1;
Register m_src2;
};
class RightShift final : public Instruction {
public:
RightShift(Register dst, Register src1, Register src2)
: Instruction(Type::RightShift)
, m_dst(dst)
, m_src1(src1)
, m_src2(src2)
{
}
void execute(Bytecode::Interpreter&) const;
String to_string() const;
private:
Register m_dst;
Register m_src1;
Register m_src2;
};
class UnsignedRightShift final : public Instruction {
public:
UnsignedRightShift(Register dst, Register src1, Register src2)
: Instruction(Type::UnsignedRightShift)
, m_dst(dst)
, m_src1(src1)
, m_src2(src2)
{
}
void execute(Bytecode::Interpreter&) const;
String to_string() const;
private:
Register m_dst;
Register m_src1;
Register m_src2;
};
class BitwiseNot final : public Instruction {
public:
BitwiseNot(Register dst, Register src)