unsigned int scev_const_prop (void);
bool expression_expensive_p (tree);
-extern bool simple_iv (struct loop *, gimple, tree, affine_iv *, bool);
+extern bool simple_iv (struct loop *, struct loop *, tree, affine_iv *, bool);
/* Returns the basic block preceding LOOP or ENTRY_BLOCK_PTR when the
loop is function's body. */