RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-05-31 04:38:11 +00:00
Code Issues Activity Actions

LibJS: Inline flow control ops in the bytecode interpreter loop

Browse source 
Instead of calling out to helper functions for flow control (and then
checking control flags on every iteration), we now simply inline those
ops in the interpreter loop directly.
This commit is contained in:
Andreas Kling 2023-09-26 19:43:44 +02:00
parent 39cfb64269
commit e5474c384d
3 changed files with 80 additions and 79 deletions
Download patch file Download diff file Expand all files Collapse all files

12
Userland/Libraries/LibJS/Bytecode/Interpreter.h
View file

@ -64,16 +64,6 @@ public:
auto& saved_lexical_environment_stack() { return call_frame().saved_lexical_environments; }
auto& unwind_contexts() { return call_frame().unwind_contexts; }
void jump(Label const& label)
{
m_pending_jump = &label.block();
}
void schedule_jump(Label const& label)
{
m_scheduled_jump = &label.block();
VERIFY(unwind_contexts().last().finalizer);
jump(Label { *unwind_contexts().last().finalizer });
}
void do_return(Value value)
{
reg(Register::return_value()) = value;
@ -82,7 +72,6 @@ public:
void enter_unwind_context(Optional<Label> handler_target, Optional<Label> finalizer_target);
void leave_unwind_context();
ThrowCompletionOr<void> continue_pending_unwind(Label const& resume_label);
Executable& current_executable() { return *m_current_executable; }
Executable const& current_executable() const { return *m_current_executable; }
@ -113,7 +102,6 @@ private:
VM& m_vm;
Vector<Variant<NonnullOwnPtr<CallFrame>, CallFrame*>> m_call_frames;
Span<Value> m_current_call_frame;
Optional<BasicBlock const*> m_pending_jump;
BasicBlock const* m_scheduled_jump { nullptr };
Executable* m_current_executable { nullptr };
BasicBlock const* m_current_block { nullptr };