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LibJS/Bytecode: Dedicated instructions for postfix increment/decrement

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Instead of splitting the postfix variants into ToNumeric + Inc/Dec,
we now have dedicated PostfixIncrement and PostfixDecrement instructions
that handle both outputs in one go.
This commit is contained in:
Andreas Kling 2024-02-20 11:45:01 +01:00
parent c4f49e343a
commit 9d9b737a58
4 changed files with 96 additions and 27 deletions
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26
Userland/Libraries/LibJS/Bytecode/Op.h
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@ -1347,6 +1347,26 @@ private:
Operand m_dst;
};
class PostfixIncrement final : public Instruction {
public:
explicit PostfixIncrement(Operand dst, Operand src)
: Instruction(Type::PostfixIncrement, sizeof(*this))
, m_dst(dst)
, m_src(src)
{
}
ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
ByteString to_byte_string_impl(Bytecode::Executable const&) const;
Operand dst() const { return m_dst; }
Operand src() const { return m_src; }
private:
Operand m_dst;
Operand m_src;
};
class Decrement final : public Instruction {
public:
explicit Decrement(Operand dst)
@ -1364,10 +1384,10 @@ private:
Operand m_dst;
};
class ToNumeric final : public Instruction {
class PostfixDecrement final : public Instruction {
public:
explicit ToNumeric(Operand dst, Operand src)
: Instruction(Type::ToNumeric, sizeof(*this))
explicit PostfixDecrement(Operand dst, Operand src)
: Instruction(Type::PostfixDecrement, sizeof(*this))
, m_dst(dst)
, m_src(src)
{