values may die at every use

[libfirm] / ir / be / benode_t.h

diff --git a/ir/be/benode_t.h b/ir/be/benode_t.h
index 035257f..a50c5cf 100644 (file)
--- a/ir/be/benode_t.h
+++ b/ir/be/benode_t.h
@@ -85,6 +85,11 @@ typedef enum {
  */
 #define BE_STACK_FRAME_SIZE ((unsigned) -1)
 
+/**
+ * Determines if irn is a be_node.
+ */
+int is_be_node(const ir_node *irn);
+
 /**
  * Create all BE specific opcodes.
  */
@@ -129,6 +134,8 @@ enum {
 ir_node *be_new_Copy(const arch_register_class_t *cls, ir_graph *irg, ir_node *block, ir_node *in);
 /** Returns the Copy Argument. */
 ir_node *be_get_Copy_op(const ir_node *cpy);
+/** Sets the Copy Argument. */
+void be_set_Copy_op(ir_node *cpy, ir_node *op);
 
 /**
  * Make a new Perm node.
@@ -265,12 +272,35 @@ ir_node *be_new_RegParams(ir_graph *irg, ir_node *bl, int n_out);
 
 ir_node *be_new_Barrier(ir_graph *irg, ir_node *bl, int n, ir_node *in[]);
 
+/**
+ * Make a spill node.
+ *
+ * @param arch_env  The architecture environment.
+ * @param irn       The node to be spilled.
+ * @param spill_ctx The context in which the spill is introduced (This is mostly == irn up to the case of Phis).
+ * @return          The new spill node.
+ */
 ir_node *be_spill(const arch_env_t *arch_env, ir_node *irn, ir_node *spill_ctx);
-ir_node *be_reload(const arch_env_t *arch_env, const arch_register_class_t *cls, ir_node *reloader, ir_mode *mode, ir_node *spill);
 
+/**
+ * Make a reload and insert it into the schedule.
+ *
+ * @param arch_env The architecture environment.
+ * @param cls      The register class of the reloaded value.
+ * @param insert   The node in the schedule in front of which the reload is inserted.
+ * @param mode     The mode of the original (spilled) value.
+ * @param spill    The spill node corresponding to this reload.
+ * @return         A freshly made reload.
+ */
+ir_node *be_reload(const arch_env_t *arch_env, const arch_register_class_t *cls, ir_node *insert, ir_mode *mode, ir_node *spill);
+
+enum {
+       be_pos_CopyKeep_op = 0
+};
 ir_node *be_new_CopyKeep(const arch_register_class_t *cls, ir_graph *irg, ir_node *bl, ir_node *src, int n, ir_node *in_keep[], ir_mode *mode);
 ir_node *be_new_CopyKeep_single(const arch_register_class_t *cls, ir_graph *irg, ir_node *bl, ir_node *src, ir_node *keep, ir_mode *mode);
-
+ir_node *be_get_CopyKeep_op(const ir_node *cpy);
+void be_set_CopyKeep_op(ir_node *cpy, ir_node *op);
 
 /**
  * Get the backend opcode of a backend node.
@@ -311,6 +341,10 @@ entity *be_get_spill_entity(const ir_node *irn);
 
 ir_node *be_get_Spill_context(const ir_node *irn);
 
+
+ir_node* be_get_Reload_mem(const ir_node *irn);
+ir_node* be_get_Reload_frame(const ir_node* irn);
+
 /**
  * Set the entities of a Reload to the ones of the Spill it is pointing to.
  * @param irg The graph.