model Unknowns as own nodes (but not in form of an unknown register)

[libfirm] / ir / be / ia32 / ia32_address_mode.h

diff --git a/ir/be/ia32/ia32_address_mode.h b/ir/be/ia32/ia32_address_mode.h
index a424d8e..524d54a 100644 (file)
--- a/ir/be/ia32/ia32_address_mode.h
+++ b/ir/be/ia32/ia32_address_mode.h
@@ -35,21 +35,29 @@
  */
 typedef struct ia32_address_t ia32_address_t;
 struct ia32_address_t {
-    ir_node   *base;             /**< The base register (if any) */
-    ir_node   *index;            /**< The index register (if any). */
-       ir_node   *mem;              /**< The memory value (if any). */
-    int        offset;           /**< An integer offset. */
-    int        scale;            /**< An integer scale. {0,1,2,3} */
-    ir_entity *symconst_ent;     /**< A SynConst entity if any. */
-    int        use_frame;        /**< Set, if the frame is accessed */
-    ir_entity *frame_entity;     /**< The accessed frame entity if any. */
-    int        symconst_sign;    /**< The "sign" of the symconst. */
+       ir_node   *base;          /**< The base register (if any) */
+       ir_node   *index;         /**< The index register (if any). */
+       ir_node   *mem;           /**< The memory value (if any). */
+       int        offset;        /**< An integer offset. */
+       int        scale;         /**< An integer scale. {0,1,2,3} */
+       ir_entity *symconst_ent;  /**< A SynConst entity if any. */
+       int        use_frame;     /**< Set, if the frame is accessed */
+       ir_entity *frame_entity;  /**< The accessed frame entity if any. */
+       int        symconst_sign; /**< The "sign" of the symconst. */
 };
 
+typedef enum ia32_create_am_flags_t {
+       ia32_create_am_force      = 1U << 0, /**< Ignore the marking of node as a
+                                                 non-address-mode node */
+       ia32_create_am_double_use = 1U << 1  /**< Fold AM, even if the root of
+                                                 address calculation has two users.
+                                                 This is useful for dest AM */
+} ia32_create_am_flags_t;
+
 /**
  * Create an address mode for a given node.
  */
-void ia32_create_address_mode(ia32_address_t *addr, ir_node *node, int force);
+void ia32_create_address_mode(ia32_address_t *addr, ir_node *node, ia32_create_am_flags_t);
 
 /**
  * Mark those nodes of the given graph that cannot be used inside an
@@ -65,7 +73,7 @@ void ia32_free_non_address_mode_nodes(void);
 /**
  * Tells whether the given node is a non address mode node.
  */
-int ia32_is_non_address_mode_node(ir_node *node);
+int ia32_is_non_address_mode_node(ir_node const *node);
 
 /**
  * mark a node so it will not be used as part of address modes