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LibJS: Add new operand type for function arguments

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This allows us to directly access passed arguments instead of copying
them to register/local first using GetArgument instruction.
This commit is contained in:
Aliaksandr Kalenik 2025-04-24 22:10:41 +02:00 • committed by Andreas Kling
commit 3f04d18ef7
Notes: github-actions[bot] 2025-04-26 09:03:30 +00:00
7 changed files with 27 additions and 93 deletions
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46
Libraries/LibJS/Bytecode/Op.h
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@ -775,52 +775,6 @@ private:
mutable EnvironmentCoordinate m_cache;
};
class SetArgument final : public Instruction {
public:
SetArgument(size_t index, Operand src)
: Instruction(Type::SetArgument)
, m_index(index)
, m_src(src)
{
}
ByteString to_byte_string_impl(Bytecode::Executable const&) const;
void visit_operands_impl(Function<void(Operand&)> visitor)
{
visitor(m_src);
}
size_t index() const { return m_index; }
Operand src() const { return m_src; }
private:
u32 m_index;
Operand m_src;
};
class GetArgument final : public Instruction {
public:
GetArgument(Operand dst, size_t index)
: Instruction(Type::GetArgument)
, m_index(index)
, m_dst(dst)
{
}
ByteString to_byte_string_impl(Bytecode::Executable const&) const;
void visit_operands_impl(Function<void(Operand&)> visitor)
{
visitor(m_dst);
}
u32 index() const { return m_index; }
Operand dst() const { return m_dst; }
private:
u32 m_index;
Operand m_dst;
};
class GetCalleeAndThisFromEnvironment final : public Instruction {
public:
explicit GetCalleeAndThisFromEnvironment(Operand callee, Operand this_value, IdentifierTableIndex identifier)