feat: async/await 语法支持（AWAIT 帧快照挂起/恢复 + 微任务驱动 + AsyncFunction intrinsics）

2026-08-09 22:02:15 +08:00
parent dcbe3d9320
commit 0d9e6eabc9
28 changed files with 1055 additions and 28 deletions
@@ -20,7 +20,7 @@ impl Inst {
            // CALL 系：结果隐式写 reg 0，rd 是 callee 的 use
            OpCode::CALL | OpCode::CALL_NATIVE | OpCode::CALL_SPREAD => Some(0),
            // YIELD/YIELD_STAR：恢复时 next(v) 的 v / 委托完成值经 reg 0 交付（与 CALL 同协议）
-            OpCode::YIELD | OpCode::YIELD_STAR => Some(0),
+            OpCode::YIELD | OpCode::YIELD_STAR | OpCode::AWAIT => Some(0),
            // GET_PROP 系：结果写 a/b 槽而非 rd
            OpCode::GET_PROP | OpCode::IC_GET_PROP => reg_of(&self.a),
            OpCode::GET_PROP_DYNAMIC => reg_of(&self.b),
@@ -228,8 +228,12 @@ impl Inst {
            }
            // HALT：隐式读 reg 0（顶层返回值）
            OpCode::HALT => uses.push(0),
-            // RETURN/THROW/YIELD/YIELD_STAR：读 rd（None→0）
-            OpCode::RETURN | OpCode::THROW | OpCode::YIELD | OpCode::YIELD_STAR => push_operand(&mut uses, &self.rd),
+            // RETURN/THROW/YIELD/YIELD_STAR/AWAIT：读 rd（None→0）
+            OpCode::RETURN
+            | OpCode::THROW
+            | OpCode::YIELD
+            | OpCode::YIELD_STAR
+            | OpCode::AWAIT => push_operand(&mut uses, &self.rd),
            // 加载族：a 槽是 Const/Imm 立即数，无寄存器 use
            OpCode::LOAD_CONST
            | OpCode::CREATE_CLOSURE