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LibJS: Remove automatic ExecutionContext creation in BC interpreter

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This was a remnant from the AST/BC hybrid interpreter times. We've had
a VERIFY in here for weeks now that would catch anything depending on
this behavior, and nothing has hit it, so let's remove the unnecessary
code (but leave the VERIFY) :^)
This commit is contained in:
Andreas Kling 2023-09-21 09:14:47 +02:00
parent 30ab198b40
commit d6e959686d
1 changed files with 1 additions and 20 deletions
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21
Userland/Libraries/LibJS/Bytecode/Interpreter.cpp
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@ -165,7 +165,7 @@ ThrowCompletionOr<Value> Interpreter::run(SourceTextModule& module)
return js_undefined();
}
Interpreter::ValueAndFrame Interpreter::run_and_return_frame(Realm& realm, Executable& executable, BasicBlock const* entry_point, CallFrame* in_frame)
Interpreter::ValueAndFrame Interpreter::run_and_return_frame(Realm&, Executable& executable, BasicBlock const* entry_point, CallFrame* in_frame)
{
dbgln_if(JS_BYTECODE_DEBUG, "Bytecode::Interpreter will run unit {:p}", &executable);
@ -174,20 +174,6 @@ Interpreter::ValueAndFrame Interpreter::run_and_return_frame(Realm& realm, Execu
TemporaryChange restore_saved_exception { m_saved_exception, {} };
VERIFY(!vm().execution_context_stack().is_empty());
bool pushed_execution_context = false;
ExecutionContext execution_context(vm().heap());
if (vm().execution_context_stack().is_empty() || !vm().running_execution_context().lexical_environment) {
// The "normal" interpreter pushes an execution context without environment so in that case we also want to push one.
execution_context.this_value = &realm.global_object();
static DeprecatedFlyString global_execution_context_name = "(*BC* global execution context)";
execution_context.function_name = global_execution_context_name;
execution_context.lexical_environment = &realm.global_environment();
execution_context.variable_environment = &realm.global_environment();
execution_context.realm = realm;
execution_context.is_strict_mode = executable.is_strict_mode;
vm().push_execution_context(execution_context);
pushed_execution_context = true;
}
TemporaryChange restore_current_block { m_current_block, entry_point ?: executable.basic_blocks.first() };
@ -314,11 +300,6 @@ Interpreter::ValueAndFrame Interpreter::run_and_return_frame(Realm& realm, Execu
// in which case this is a no-op.
vm().run_queued_promise_jobs();
if (pushed_execution_context) {
VERIFY(&vm().running_execution_context() == &execution_context);
vm().pop_execution_context();
}
vm().finish_execution_generation();
if (m_saved_exception.has_value()) {