ipa-icf.c (sem_item::compare_attributes): New function.

	* ipa-icf.c (sem_item::compare_attributes): New function.
	(sem_item::compare_referenced_symbol_properties): Compare variable
	attributes.
	(sem_item::hash_referenced_symbol_properties): Record DECL_ALIGN.
	(sem_function::param_used_p): New function.
	(sem_function::equals_wpa): Fix attribute comparsion; match
	parameter type codes; do not compare paremter flags when
	they are not used; compare edge flags; compare indirect calls.
	(sem_item::update_hash_by_addr_refs): Hash reference type.
	(sem_function::equals_private): Do not match DECL_ATTRIBUTES.
	(sem_variable::equals_wpa): Do not match DECL_ALIGN; match
	reference use type.
	(sem_item_optimizer::update_hash_by_addr_refs): Use param_used_p.
	* ipa-icf.h (compare_attributes, param_used_p): Declare.

From-SVN: r222374

gcc/ChangeLog

 2015-04-23  Jan Hubicka  <hubicka@ucw.cz>
 
+	* ipa-icf.c (sem_item::compare_attributes): New function.
+	(sem_item::compare_referenced_symbol_properties): Compare variable
+	attributes.
+	(sem_item::hash_referenced_symbol_properties): Record DECL_ALIGN.
+	(sem_function::param_used_p): New function.
+	(sem_function::equals_wpa): Fix attribute comparsion; match
+	parameter type codes; do not compare paremter flags when
+	they are not used; compare edge flags; compare indirect calls.
+	(sem_item::update_hash_by_addr_refs): Hash reference type.
+	(sem_function::equals_private): Do not match DECL_ATTRIBUTES.
+	(sem_variable::equals_wpa): Do not match DECL_ALIGN; match
+	reference use type.
+	(sem_item_optimizer::update_hash_by_addr_refs): Use param_used_p.
+	* ipa-icf.h (compare_attributes, param_used_p): Declare.
+
+2015-04-23  Jan Hubicka  <hubicka@ucw.cz>
+
 	* ipa-icf.c (symbol_compare_collection::symbol_compare_collection):
 	cleanup.
 	(sem_function::get_hash): Do not hash DECL_DISREGARD_INLINE_LIMITS,

gcc/ipa-icf.h

@@ -256,6 +256,9 @@ protected:
 					            symtab_node *n2,
 					            bool address);
 
+  /* Compare two attribute lists.  */
+  static bool compare_attributes (const_tree list1, const_tree list2);
+
   /* Hash properties compared by compare_referenced_symbol_properties.  */
   void hash_referenced_symbol_properties (symtab_node *ref,
 					  inchash::hash &hstate,
@@ -356,6 +359,9 @@ public:
   /* Array of structures for all basic blocks.  */
   vec <ipa_icf_gimple::sem_bb *> bb_sorted;
 
+  /* Return true if parameter I may be used.  */
+  bool param_used_p (unsigned int i);
+
 private:
   /* Calculates hash value based on a BASIC_BLOCK.  */
   hashval_t get_bb_hash (const ipa_icf_gimple::sem_bb *basic_block);