X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbearch.h;h=9c0e92446fcb063d95ac7c6deeadf8eafa0bcb09;hb=e629e6d582dcf7d83989409bd5701d1725b6c6c1;hp=c287d33cac00533142461188552feb9db54807c4;hpb=e96155a7245cb7eee1de5980f8a158582a8dcff0;p=libfirm

diff --git a/ir/be/bearch.h b/ir/be/bearch.h
index c287d33ca..9c0e92446 100644
--- a/ir/be/bearch.h
+++ b/ir/be/bearch.h
@@ -37,7 +37,6 @@ struct _be_node_factory_t;
 
 typedef enum _arch_register_type_t {
   arch_register_type_none = 0,
-  arch_register_type_write_invariant,
   arch_register_type_caller_saved,    /**< The register must be saved by the caller
                                            upon a function call. It thus can be overwritten
                                            in the called function. */
@@ -111,13 +110,6 @@ _arch_register_for_index(const arch_register_class_t *cls, int idx)
 #define arch_register_for_index(cls, idx) \
   _arch_register_for_index(cls, idx)
 
-/**
- * Get the register set for a register class.
- * @param cls The register class.
- * @return The set containing all registers in the class.
- */
-#define arch_get_register_set_for_class(cls) ((cls)->set)
-
 typedef enum _arch_operand_type_t {
   arch_operand_type_invalid,
   arch_operand_type_memory,
@@ -163,7 +155,7 @@ typedef struct _arch_register_req_t {
 	arch_register_req_type_t type;          /**< The type of the constraint. */
 	const arch_register_class_t *cls;       /**< The register class this constraint belongs to. */
 
-	int (*limited)(const ir_node *irn, int pos, bitset_t *bs);
+	void (*limited)(const ir_node *irn, int pos, bitset_t *bs);
                                           /**< In case of the 'limited'
                                             constraint, this function
                                             must put all allowable
@@ -194,8 +186,9 @@ typedef enum _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_dont_spill       = 1, /**< This must not be spilled. */
+  arch_irn_flags_rematerializable = 2, /**< This should be replicated instead of spilled/reloaded. */
+  arch_irn_flags_ignore           = 4, /**< Do not consider the node during register allocation. */
 } arch_irn_flags_t;
 
 struct _arch_irn_ops_if_t {
@@ -355,9 +348,15 @@ extern arch_irn_class_t arch_irn_classify(const arch_env_t *env, const ir_node *
  */
 extern arch_irn_flags_t arch_irn_get_flags(const arch_env_t *env, const ir_node *irn);
 
+#define arch_irn_is_ignore(env, irn) \
+	(arch_irn_get_flags(env, irn) == arch_irn_flags_ignore)
+
 #define arch_irn_has_reg_class(env, irn, pos, cls) \
   ((cls) == arch_get_irn_reg_class(env, irn, pos))
 
+#define arch_irn_consider_in_reg_alloc(env, cls, irn) \
+	(arch_irn_has_reg_class(env, irn, -1, cls) && !arch_irn_is_ignore(env, irn))
+
 /**
  * Somebody who can be asked about nodes.
  */