perf: 寄存器保存改用共享 save_stack,消除 Box<[JsValue]> 堆分配

2026-06-24 22:20:34 +08:00
parent fe2d4929f5
commit 33c0596c81
6 changed files with 37 additions and 19 deletions
@@ -99,7 +99,8 @@ impl Vm {
            let sub_constants = self.sub_modules[sub_idx].constants.clone();
            let sub_param_base = self.sub_modules[sub_idx].param_base as usize;
            let caller_reg_limit = self.active_reg_limit.max(1);
-            let saved_regs = self.regs[..caller_reg_limit as usize].to_vec().into_boxed_slice();
+            let saved_reg_offset = self.save_stack.len() as u32;
+            self.save_stack.extend_from_slice(&self.regs[..caller_reg_limit as usize]);
            let saved_this = self.regs[254];
            let saved_new_target = self.regs[255];

@@ -126,7 +127,7 @@ impl Vm {
                    .map(|name| self.kernel_core.perm_interner().intern(name).0)
                    .unwrap_or(0),
                caller_reg_limit,
-                saved_regs,
+                saved_reg_offset,
                saved_this,
                saved_new_target,
                callee: constructor,