perf: 不可变常量改 OnceLock 一次性缓存,删 Constant 死变体并移出 GC 根

2026-06-25 14:32:49 +08:00
parent 1ef8349208
commit 06f769c4e0
9 changed files with 115 additions and 192 deletions
@@ -84,14 +84,15 @@ impl Vm {
    pub(crate) fn dispatch_define_accessor(&mut self, rd: usize, a: usize, b: usize) -> Result<(), String> {
        let prop_idx = self.bytecode[self.pc] as usize;
        self.pc += 1;
-        if prop_idx >= self.constants.len() {
+        if prop_idx >= self.immutables().len() {
            return self.raise_type_error("DEFINE_ACCESSOR constant index out of bounds");
        }
        let obj_val = self.regs[rd];
        if !obj_val.is_object() {
            return self.raise_type_error("DEFINE_ACCESSOR target is not object");
        }
-        let prop_name_si = self.property_key_si(self.constants[prop_idx]);
+        let key_val = self.immutables()[prop_idx];
+        let prop_name_si = self.property_key_si(key_val);
        let getter = self.regs[a];
        let setter = self.regs[b];
        let obj = unsafe { &mut *obj_val.as_js_object_ptr() };