stage0 新增内存复制指令 重构vm交互

stage1/spl_ast.h

@@ -73,7 +73,8 @@
     X(SPL_AST_PATTERN_TUPLE,        V0, pattern_tuple)                \
     X(SPL_AST_PATTERN_LIST,         V0, pattern_list)                 \
     X(SPL_AST_PATTERN_AGGREGATE,    V0, pattern_aggregate)            \
-    X(SPL_AST_PATTERN_FIELD,        V0, pattern_field)
+    X(SPL_AST_PATTERN_FIELD,        V0, pattern_field)                \
+    X(SPL_AST_PATTERN_REF,          V0, pattern_ref)
 /* clang-format on */
 
 typedef enum {
@@ -452,6 +453,10 @@ struct spl_ast_node {
             const char *name;
             spl_ast_node_ref_t pattern;
         } pattern_field;
+
+        struct {
+            spl_ast_node_ref_t pat;
+        } pattern_ref;
     };
 };