extern void expand_function_start (tree);
extern void stack_protect_prologue (void);
extern void stack_protect_epilogue (void);
-extern void recompute_tree_invarant_for_addr_expr (tree);
+extern void recompute_tree_invariant_for_addr_expr (tree);
extern bool is_global_var (tree t);
extern bool needs_to_live_in_memory (tree);
extern tree reconstruct_complex_type (tree, tree);