/** The alias relation of two memory addresses. */
typedef enum {
- no_alias, /**< No alias. */
- may_alias, /**< Unknown state, may alias. */
- sure_alias /**< Sure alias. */
+ ir_no_alias, /**< No alias. */
+ ir_may_alias, /**< Unknown state, may alias. */
+ ir_sure_alias /**< Sure alias. */
} ir_alias_relation;
-/** The state of the address taken flags. */
+/** The state of the entity usage flags. */
typedef enum {
- ir_address_taken_not_computed, /**< Address taken flag is not computed. */
- ir_address_taken_computed /**< Address taken flag is computed. */
-} ir_address_taken_computed_state;
+ ir_entity_usage_not_computed,
+ ir_entity_usage_computed
+} ir_entity_usage_computed_state;
/** Possible options for the memory disambiguator. */
typedef enum {
- aa_opt_no_opt = 0, /**< no options: most conservative */
- aa_opt_type_based = 1, /**< use type based alias analysis: strict typed source language */
- aa_opt_byte_type_may_alias = 2, /**< if type based analysis is enabled: bytes types may alias other types */
- aa_opt_no_alias = 4, /**< two addresses NEVER alias, use with CAUTION (gcc -fno-alias) */
- aa_opt_inherited = 128 /**< only for implementation: options from a graph are inherited from global */
-} disambuigator_options;
+ aa_opt_no_opt = 0, /**< no options: most conservative */
+ aa_opt_type_based = 1, /**< use type based alias analysis: strict typed source language */
+ aa_opt_byte_type_may_alias = 2, /**< if type based analysis is enabled: bytes types may alias other types */
+ aa_opt_no_alias_args = 4, /**< arguments do not alias each other but may alias global storage */
+ aa_opt_no_alias_args_global = 8, /**< arguments do not alias global storage */
+ aa_opt_no_alias = 16, /**< two addresses NEVER alias, use with CAUTION (gcc -fno-alias) */
+ aa_opt_inherited = 128 /**< only for implementation: options from a graph are inherited from global */
+} ir_disambuigator_options;
+
+/**
+ * Classify storage locations.
+ * Except ir_sc_pointer they are all disjoint.
+ * ir_sc_pointer potentially aliases all classes which don't have a
+ * NOTTAKEN modifier.
+ */
+typedef enum {
+ ir_sc_pointer = 0x0, /**< generic pointer, may be anything */
+ ir_sc_globalvar = 0x1, /**< an address of a global variable */
+ ir_sc_localvar = 0x2, /**< an address of a local variable or method argument */
+ ir_sc_tls = 0x3, /**< an address of a thread local storage variable */
+ ir_sc_malloced = 0x4, /**< an allocated heap address */
+ ir_sc_globaladdr = 0x5, /**< a constant address of something */
+
+ ir_sc_modifier_nottaken = 0x80, /**< if set, the address of the variable was not taken */
+ ir_sc_modifier_argument = 0x40, /**< if set pointer was a function argument */
+ ir_sc_modifiers = ir_sc_modifier_nottaken | ir_sc_modifier_argument
+} ir_storage_class_class_t;
+
+/** Get the base storage class (ignore modifier) */
+#define GET_BASE_SC(x) ((x) & ~ir_sc_modifiers)
/**
* A source language specific memory disambiguator function.
* Called by get_alias_relation().
*/
typedef ir_alias_relation (*DISAMBIGUATOR_FUNC)(
- ir_graph *irg,
- ir_node *adr1, ir_mode *mode1,
- ir_node *adr2, ir_mode *mode2);
+ const ir_graph *irg,
+ const ir_node *adr1, const ir_mode *mode1,
+ const ir_node *adr2, const ir_mode *mode2);
+
+/**
+ * Classify a base pointer.
+ *
+ * @param irg the graph of the pointer
+ * @param irn the node representing the base address
+ * @param ent the base entity of the base address iff any
+ */
+ir_storage_class_class_t classify_pointer(const ir_graph *irg, const ir_node *irn, const ir_entity *ent);
/**
* Returns a human readable name for an alias relation.
* interrogated to detect the alias relation.
*/
ir_alias_relation get_alias_relation(
- ir_graph *irg,
- ir_node *adr1, ir_mode *mode1,
- ir_node *adr2, ir_mode *mode2);
+ const ir_graph *irg,
+ const ir_node *adr1, const ir_mode *mode1,
+ const ir_node *adr2, const ir_mode *mode2);
/**
* Set a source language specific memory disambiguator function.
* @see get_alias_relation()
*/
ir_alias_relation get_alias_relation_ex(
- ir_graph *irg,
- ir_node *adr1, ir_mode *mode1,
- ir_node *adr2, ir_mode *mode2);
+ const ir_graph *irg,
+ const ir_node *adr1, const ir_mode *mode1,
+ const ir_node *adr2, const ir_mode *mode2);
/**
* Free the relation cache.
*/
void mem_disambig_term(void);
-/**
- * Returns the current address taken state of the graph.
- */
-ir_address_taken_computed_state get_irg_address_taken_state(const ir_graph *irg);
+ir_entity_usage_computed_state get_irg_entity_usage_state(const ir_graph *irg);
-/**
- * Sets the current address taken state of the graph.
- *
- * @param irg the graph
- * @param state the new state
- */
-void set_irg_address_taken_state(ir_graph *irg, ir_address_taken_computed_state state);
+void set_irg_entity_usage_state(ir_graph *irg, ir_entity_usage_computed_state state);
/**
- * Assure that the address taken flag is computed for the given graph.
+ * Assure that the entity usage flags have been computed for the given graph.
*
- * This is an intraprocedural analysis that computes the address_taken state
+ * This is an intraprocedural analysis that computes the entity usage state
* for all local variables.
*
* Note that this is a conservative estimation that by no Firm transformation
* can be invalidated, so it's only recomputed if manually triggered by calling
- * set_irg_address_taken_state(irg, ir_address_taken_not_computed).
+ * set_irg_entity_usage_state(irg, ir_entity_usage_not_computed).
* Even then the information is not cleaned from the variables, call
- * assure_irg_address_taken_computed() again for recomputation.
+ * assure_irg_entity_usage_computed() again for recomputation.
*/
-void assure_irg_address_taken_computed(ir_graph *irg);
+void assure_irg_entity_usage_computed(ir_graph *irg);
/**
* Returns the current address taken state of the globals.
*/
-ir_address_taken_computed_state get_irp_globals_address_taken_state(void);
+ir_entity_usage_computed_state get_irp_globals_entity_usage_state(void);
/**
* Sets the current address taken state of the globals.
*
* @param state the new state
*/
-void set_irp_globals_address_taken_state(ir_address_taken_computed_state state);
+void set_irp_globals_entity_usage_state(ir_entity_usage_computed_state state);
/**
* Assure that the address taken flag is computed for the global and TLS entities (variables).
*
* Note that this is a conservative estimation that by no Firm transformation
* can be invalidated, so it's only recomputed if manually triggered by calling
- * set_irp_globals_address_taken_state(ir_address_taken_not_computed).
+ * set_irp_globals_entity_usage_state(ir_entity_usage_not_computed).
* Even then the information is not cleaned from the variables, call
- * assure_irp_globals_address_taken_computed() again for recomputation.
+ * assure_irp_globals_entity_usage_computed() again for recomputation.
*/
-void assure_irp_globals_address_taken_computed(void);
+void assure_irp_globals_entity_usage_computed(void);
/**
* Get the memory disambiguator options for a graph.
*
* @param irg the graph
*/
-unsigned get_irg_memory_disambiguator_options(ir_graph *irg);
+unsigned get_irg_memory_disambiguator_options(const ir_graph *irg);
/**
* Set the memory disambiguator options for a graph.
*
* @param irg the graph
- * @param option a set of options
+ * @param options a set of options
*/
void set_irg_memory_disambiguator_options(ir_graph *irg, unsigned options);
/**
* Set the global disambiguator options for all graphs not having local options.
*
- * @param option a set of options
+ * @param options a set of options
*/
void set_irp_memory_disambiguator_options(unsigned options);
*/
void mark_private_methods(void);
+/**
+ * Creates an ir_prog pass for mark_private_methods().
+ *
+ * @param name the name of this pass or NULL
+ *
+ * @return the newly created ir_prog pass
+ */
+ir_prog_pass_t *mark_private_methods_pass(const char *name);
+
#endif /* FIRM_ANA_IRMEMORY_H */
projects / libfirm / blobdiff