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LibJS: Switch to array-calls in the bytecode vm

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This will make it easier to implement spreading arguments.
This commit is contained in:
Hendiadyoin1 2022-09-07 23:39:43 +02:00 • committed by Linus Groh
parent ab763a56f6
commit 4235b2020f
3 changed files with 67 additions and 65 deletions
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28
Userland/Libraries/LibJS/Bytecode/Op.h
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@ -585,59 +585,39 @@ public:
Construct,
};
Call(CallType type, Register callee, Register this_value, Vector<Register> const& arguments)
Call(CallType type, Register callee, Register this_value)
: Instruction(Type::Call)
, m_callee(callee)
, m_this_value(this_value)
, m_type(type)
, m_argument_count(arguments.size())
{
for (size_t i = 0; i < m_argument_count; ++i)
m_arguments[i] = arguments[i];
}
ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
String to_string_impl(Bytecode::Executable const&) const;
void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
size_t length_impl() const
{
return sizeof(*this) + sizeof(Register) * m_argument_count;
}
private:
Register m_callee;
Register m_this_value;
CallType m_type;
size_t m_argument_count { 0 };
Register m_arguments[];
};
// NOTE: This instruction is variable-width depending on the number of arguments!
class SuperCall : public Instruction {
public:
explicit SuperCall(bool is_synthetic, Vector<Register> const& arguments)
explicit SuperCall(bool is_synthetic)
: Instruction(Type::SuperCall)
, m_is_synthetic(is_synthetic)
, m_argument_count(arguments.size())
{
for (size_t i = 0; i < m_argument_count; ++i)
m_arguments[i] = arguments[i];
}
ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
String to_string_impl(Bytecode::Executable const&) const;
void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
size_t length_impl() const
{
return sizeof(*this) + sizeof(Register) * m_argument_count;
}
private:
bool m_is_synthetic;
size_t m_argument_count { 0 };
Register m_arguments[];
};
class NewClass final : public Instruction {
@ -991,10 +971,6 @@ ALWAYS_INLINE void Instruction::replace_references(BasicBlock const& from, Basic
ALWAYS_INLINE size_t Instruction::length() const
{
if (type() == Type::Call)
return static_cast<Op::Call const&>(*this).length_impl();
if (type() == Type::SuperCall)
return static_cast<Op::SuperCall const&>(*this).length_impl();
if (type() == Type::NewArray)
return static_cast<Op::NewArray const&>(*this).length_impl();
if (type() == Type::CopyObjectExcludingProperties)