bugfixes

[libfirm] / ir / be / bearch.h

diff --git a/ir/be/bearch.h b/ir/be/bearch.h
index 62185f2..5d02267 100644 (file)
--- a/ir/be/bearch.h
+++ b/ir/be/bearch.h
@@ -7,14 +7,13 @@
 #include "irnode.h"
 #include "irmode.h"
 
+#include "bitset.h"
 #include "hashptr.h"
 #include "fourcc.h"
 #include "set.h"
 #include "list.h"
 #include "ident.h"
 
-struct _bitset_t;
-
 typedef struct _arch_register_class_t   arch_register_class_t;
 typedef struct _arch_register_t         arch_register_t;
 typedef struct _arch_enum_t             arch_enum_t;
@@ -24,6 +23,8 @@ typedef struct _arch_env_t              arch_env_t;
 typedef struct _arch_irn_ops_t          arch_irn_ops_t;
 typedef struct _arch_irn_handler_t      arch_irn_handler_t;
 
+struct _be_node_factory_t;
+
 typedef enum _arch_register_type_t {
        arch_register_type_none = 0,
   arch_register_type_write_invariant,
@@ -79,8 +80,7 @@ struct _arch_register_class_t {
  * @param bs The bitset. May be NULL.
  * @return The number of registers in the class.
  */
-extern int arch_register_class_put(const arch_register_class_t *cls,
-    struct _bitset_t *bs);
+extern int arch_register_class_put(const arch_register_class_t *cls, bitset_t *bs);
 
 static INLINE const arch_register_t *
 _arch_register_for_index(const arch_register_class_t *cls, int idx)
@@ -168,7 +168,7 @@ typedef struct _arch_register_req_t {
   const arch_register_class_t *cls;       /** The register class this
                                             constraint belongs to. */
   union {
-    int (*limited)(const ir_node *irn, int pos, struct _bitset_t *bs);
+    int (*limited)(const ir_node *irn, int pos, bitset_t *bs);
                                           /** In case of the 'limited'
                                             constraint, this function
                                             must put all allowable
@@ -192,9 +192,18 @@ typedef enum _arch_irn_class_t {
   arch_irn_class_spill,
   arch_irn_class_reload,
   arch_irn_class_copy,
-  arch_irn_class_perm
+  arch_irn_class_perm,
+  arch_irn_class_branch
 } arch_irn_class_t;
 
+/**
+ * Some flags describing a node in more detail.
+ */
+typedef enum _arch_irn_flags_t {
+       arch_irn_flags_spillable = 1,
+       arch_irn_flags_rematerializable = 2
+} arch_irn_flags_t;
+
 /*
  * Some words about positions and indices:
  *
@@ -303,8 +312,19 @@ struct _arch_irn_ops_t {
    */
   arch_irn_class_t (*classify)(const arch_irn_ops_t *self, const ir_node *irn);
 
+       /**
+        * Get the flags of a node.
+        * @param self The irn ops themselves.
+        * @param irn The node.
+        * @return A set of flags.
+        */
+       arch_irn_flags_t (*get_flags)(const arch_irn_ops_t *self, const ir_node *irn);
+
 };
 
+extern int
+arch_get_n_operands(const arch_env_t *env, const ir_node *irm, int in_out);
+
 /**
  * Get the register requirements for a node.
  * @param env The architecture environment.
@@ -345,7 +365,7 @@ extern int arch_is_register_operand(const arch_env_t *env,
  * @return    The amount of registers allocatable for that operand.
  */
 extern int arch_get_allocatable_regs(const arch_env_t *env, const ir_node *irn,
-    int pos, const arch_register_class_t *cls, struct _bitset_t *bs);
+    int pos, const arch_register_class_t *cls, bitset_t *bs);
 
 /**
  * Check, if a register is assignable to an operand of a node.
@@ -362,7 +382,7 @@ extern int arch_reg_is_allocatable(const arch_env_t *env,
  * Get the register class of an operand of a node.
  * @param env The architecture environment.
  * @param irn The node.
- * @param idx The position of the operand.
+ * @param pos The position of the operand.
  * @return    The register class of the operand or NULL, if
  *            operand is a non-register operand.
  */
@@ -389,6 +409,22 @@ arch_get_irn_register(const arch_env_t *env, const ir_node *irn, int idx);
 extern void arch_set_irn_register(const arch_env_t *env,
     ir_node *irn, int idx, const arch_register_t *reg);
 
+/**
+ * Classify a node.
+ * @param env The architecture environment.
+ * @param irn The node.
+ * @return A classification of the node.
+ */
+extern arch_irn_class_t arch_irn_classify(const arch_env_t *env, const ir_node *irn);
+
+/**
+ * Get the flags of a node.
+ * @param env The architecture environment.
+ * @param irn The node.
+ * @return The flags.
+ */
+extern arch_irn_flags_t arch_irn_get_flags(const arch_env_t *env, const ir_node *irn);
+
 #define arch_irn_has_reg_class(env, irn, pos, cls) \
   ((cls) == arch_get_irn_reg_class(env, irn, pos))
 
@@ -431,6 +467,13 @@ struct _arch_isa_if_t {
    */
   const arch_register_class_t *(*get_reg_class)(int i);
 
+       /**
+        * Prepare a graph.
+        * This function is called each time, the backend starts running over
+        * a graph.
+        * @param irg The graph.
+        */
+       void (*prepare_graph)(ir_graph *irg);
 };
 
 #define ARCH_MAX_HANDLERS         8
@@ -440,12 +483,13 @@ struct _arch_isa_if_t {
  * Keep this everywhere you're going.
  */
 struct _arch_env_t {
-  const arch_isa_if_t *isa;          /** The isa about which everything is. */
+  const struct _be_node_factory_t *node_factory;  /**< The node factory for be nodes. */
+  const arch_isa_if_t *isa;               /**< The isa about which everything is. */
 
-  arch_irn_handler_t const *handlers[ARCH_MAX_HANDLERS];   /** The handlers are organized as
-                                                        a stack. */
+  arch_irn_handler_t const *handlers[ARCH_MAX_HANDLERS]; /**< The handlers are organized as
+                                                           a stack. */
 
-  int handlers_tos;                                   /** The stack pointer of the handler
+  int handlers_tos;                                   /**< The stack pointer of the handler
                                                         stack. */
 };