fix address mode calculation: we can not eat immediates for shifted values (well...

[libfirm] / ir / be / bearch.h

diff --git a/ir/be/bearch.h b/ir/be/bearch.h
index e8b2b46..92a86ef 100644 (file)
--- a/ir/be/bearch.h
+++ b/ir/be/bearch.h
@@ -60,8 +60,11 @@ typedef enum arch_register_type_t {
                                              in the called function. */
        arch_register_type_ignore       = 4,  /**< Do not consider this register when allocating. */
        arch_register_type_joker        = 8,  /**< The emitter can choose an arbitrary register */
-       arch_register_type_virtual      = 16, /**< This is just a virtual register  */
-       arch_register_type_state        = 32,
+       arch_register_type_virtual      = 16, /**< This is just a virtual register.Virtual registers have
+                                               nearly no constraints, it is a allowed to have multiple
+                                                                                          definition for the same register at a point) */
+       arch_register_type_state        = 32, /**< The register represents a state that should be handled by
+                                                  bestate code */
 } arch_register_type_t;
 
 /**