===================================================================
@@ -2355,6 +2355,7 @@ optimize_unreachable (gimple_stmt_iterat
gimple_cond_make_true (stmt);
else
gcc_unreachable ();
+ update_stmt (stmt);
}
else
{
===================================================================
@@ -0,0 +1,62 @@
+// { dg-do compile }
+
+typedef union tree_node *tree;
+typedef union gimple_statement_d *gimple;
+struct vec_prefix { unsigned num_; };
+template<typename T> struct vec_t {
+ unsigned length (void) const;
+ T &operator[] (unsigned);
+ vec_prefix prefix_;
+ T vec_[1];
+};
+template<typename T> inline unsigned vec_t<T>::length (void) const {
+ return prefix_.num_;
+}
+template<typename T> T & vec_t<T>::operator[] (unsigned ix) {
+ ((void)(__builtin_expect(!(ix < prefix_.num_), 0) ? __builtin_unreachable(), 0 : 0));
+ return vec_[ix];
+}
+enum tree_code { PARM_DECL };
+struct tree_base {
+ enum tree_code code : 16;
+ unsigned default_def_flag : 1;
+};
+union tree_node {
+ struct tree_base base;
+};
+struct ipa_param_descriptor {
+ tree decl;
+ unsigned used : 1;
+};
+typedef struct ipa_param_descriptor ipa_param_descriptor_t;
+struct ipa_node_params {
+ vec_t<ipa_param_descriptor_t> *descriptors;
+};
+static inline int ipa_get_param_count (struct ipa_node_params *info) {
+ return ((info->descriptors) ? (info->descriptors)->length () : 0);
+}
+static inline tree ipa_get_param (struct ipa_node_params *info, int i) {
+ return ((*(info->descriptors))[i]).decl;
+}
+static inline void ipa_set_param_used (struct ipa_node_params *info, int i, bool val) {
+ ((*(info->descriptors))[i]).used = val;
+}
+int ipa_get_param_decl_index (struct ipa_node_params *info, tree ptree)
+{
+ int i, count;
+ count = ipa_get_param_count (info);
+ for (i = 0; i < count; i++)
+ if (ipa_get_param (info, i) == ptree) return i;
+ return -1;
+}
+bool visit_ref_for_mod_analysis (gimple stmt __attribute__ ((__unused__)),
+ tree op, void *data)
+{
+ struct ipa_node_params *info = (struct ipa_node_params *) data;
+ if (op && ((enum tree_code) (op)->base.code) == PARM_DECL)
+ {
+ int index = ipa_get_param_decl_index (info, op);
+ ((void)(__builtin_expect(!(index >= 0), 0) ? __builtin_unreachable(), 0 : 0));
+ ipa_set_param_used (info, index, true);
+ }
+}