Get rid of rb_shape_t.heap_id

Author: byroot

shape.c

@@ -451,7 +451,6 @@ rb_shape_alloc(ID edge_name, rb_shape_t *parent, enum shape_type type)
 {
     rb_shape_t *shape = rb_shape_alloc_with_parent_id(edge_name, raw_shape_id(parent));
     shape->type = (uint8_t)type;
-    shape->heap_index = parent->heap_index;
     shape->capacity = parent->capacity;
     shape->edges = 0;
     return shape;
@@ -755,7 +754,7 @@ rb_shape_object_id(shape_id_t original_shape_id)
 static inline shape_id_t
 transition_complex(shape_id_t shape_id)
 {
-    uint8_t heap_index = RSHAPE(shape_id)->heap_index;
+    uint8_t heap_index = rb_shape_heap_index(shape_id);
     shape_id_t next_shape_id;
 
     if (heap_index) {
@@ -1341,7 +1340,7 @@ shape_id_t_to_rb_cShape(shape_id_t shape_id)
             INT2NUM(shape->parent_id),
             rb_shape_edge_name(shape),
             INT2NUM(shape->next_field_index),
-            INT2NUM(shape->heap_index),
+            INT2NUM(rb_shape_heap_index(shape_id)),
             INT2NUM(shape->type),
             INT2NUM(RSHAPE_CAPACITY(shape_id)));
     rb_obj_freeze(obj);
@@ -1562,15 +1561,13 @@ Init_default_shapes(void)
     rb_shape_t *root = rb_shape_alloc_with_parent_id(0, INVALID_SHAPE_ID);
     root->capacity = 0;
     root->type = SHAPE_ROOT;
-    root->heap_index = 0;
     GET_SHAPE_TREE()->root_shape = root;
     RUBY_ASSERT(raw_shape_id(GET_SHAPE_TREE()->root_shape) == ROOT_SHAPE_ID);
 
     rb_shape_t *root_with_obj_id = rb_shape_alloc_with_parent_id(0, ROOT_SHAPE_ID);
     root_with_obj_id->type = SHAPE_OBJ_ID;
     root_with_obj_id->edge_name = ruby_internal_object_id;
     root_with_obj_id->next_field_index++;
-    root_with_obj_id->heap_index = 0;
     RUBY_ASSERT(raw_shape_id(root_with_obj_id) == ROOT_SHAPE_WITH_OBJ_ID);
 }
 

shape.h

@@ -57,7 +57,6 @@ struct rb_shape {
     attr_index_t next_field_index; // Fields are either ivars or internal properties like `object_id`
     attr_index_t capacity; // Total capacity of the object with this shape
     uint8_t type;
-    uint8_t heap_index;
 };
 
 typedef struct rb_shape rb_shape_t;