oops

[libfirm] / include / libfirm / irgraph.h

diff --git a/include/libfirm/irgraph.h b/include/libfirm/irgraph.h
index 87bb9dc..53a284b 100644 (file)
--- a/include/libfirm/irgraph.h
+++ b/include/libfirm/irgraph.h
@@ -521,6 +521,7 @@ enum ir_resources_enum_t {
 
        /* global (irp) resources */
        IR_RESOURCE_ENTITY_LINK   = 1 << 8,  /**< IR-entity link fields are used. */
+       IR_RESOURCE_TYPE_VISITED  = 1 << 9,  /**< type visited flags */
 
        /* masks */
        IR_RESOURCE_LOCAL_MASK    = 0x00FF,  /**< Mask for all local resources. */
@@ -533,11 +534,26 @@ void ir_reserve_resources(ir_graph *irg, ir_resources_t resources);
 void ir_free_resources(ir_graph *irg, ir_resources_t resources);
 ir_resources_t ir_resources_reserved(const ir_graph *irg);
 #else
-#define ir_reserve_resources(irg,resources)
-#define ir_free_resources(irg,resources)
+#define ir_reserve_resources(irg,resources)  (void)0
+#define ir_free_resources(irg,resources)     (void)0
 #define ir_resources_reserved(irg)           0
 #endif
 
+/**
+ * Graph State
+ */
+typedef enum {
+       IR_GRAPH_STATE_KEEP_MUX = 1 << 0,  /**< should perform no further optimisations on Mux nodes */
+       IR_GRAPH_STATE_ARCH_DEP = 1 << 1,  /**< should not construct more nodes which irarch potentially breaks down */
+} ir_graph_state_t;
+
+/** set some state flags on the graph (this does not clear the other flags) */
+void set_irg_state(ir_graph *irg, ir_graph_state_t state);
+/** clear some state flags of the graph */
+void clear_irg_state(ir_graph *irg, ir_graph_state_t state);
+/** query wether a set of graph state flags are activated */
+int is_irg_state(const ir_graph *irg, ir_graph_state_t state);
+
 /** Normalization: Move Proj nodes into the same block as its predecessors */
 void normalize_proj_nodes(ir_graph *irg);