IPA-CP: Remove bogus static keyword (PR 92971)

2019-12-18  Martin Jambor  <mjambor@suse.cz>

	PR ipa/92971
	* ipa-cp.c (cgraph_edge_brings_all_agg_vals_for_node): Fix
          definition of values, release memory on exit.

	testsuite/
	* gcc.dg/ipa/ipcp-agg-12.c: New test.

From-SVN: r279525

gcc/ChangeLog

+2019-12-18  Martin Jambor  <mjambor@suse.cz>
+
+	PR ipa/92971
+	* ipa-cp.c (cgraph_edge_brings_all_agg_vals_for_node): Fix
+          definition of values, release memory on exit.
+
 2019-12-17  Jan Hubicka  <hubicka@ucw.cz>
 	    Martin Jambor  <mjambor@suse.cz>
 

gcc/ipa-cp.c

@@ -5117,7 +5117,6 @@ cgraph_edge_brings_all_agg_vals_for_node (struct cgraph_edge *cs,
 
   for (i = 0; i < count; i++)
     {
-      static vec<ipa_agg_value> values = vNULL;
       class ipcp_param_lattices *plats;
       bool interesting = false;
       for (struct ipa_agg_replacement_value *av = aggval; av; av = av->next)
@@ -5133,7 +5132,7 @@ cgraph_edge_brings_all_agg_vals_for_node (struct cgraph_edge *cs,
       if (plats->aggs_bottom)
 	return false;
 
-      values = intersect_aggregates_with_edge (cs, i, values);
+      vec<ipa_agg_value> values = intersect_aggregates_with_edge (cs, i, vNULL);
       if (!values.exists ())
 	return false;
 
@@ -5157,6 +5156,7 @@ cgraph_edge_brings_all_agg_vals_for_node (struct cgraph_edge *cs,
 		return false;
 	      }
 	  }
+      values.release ();
     }
   return true;
 }

gcc/testsuite/ChangeLog

+2019-12-18  Martin Jambor  <mjambor@suse.cz>
+
+	PR ipa/92971
+	* gcc.dg/ipa/ipcp-agg-12.c: New test.
+
 2019-12-17  Jan Hubicka  <hubicka@ucw.cz>
 	    Martin Jambor  <mjambor@suse.cz>
 

gcc/testsuite/gcc.dg/ipa/ipcp-agg-12.c

+/* { dg-do compile } */
+/* { dg-options "-O3 -fno-ipa-sra -fdump-ipa-cp-details --param=ipa-cp-eval-threshold=2"  } */
+
+struct S
+{
+  int a, b, c;
+};
+
+int __attribute__((noinline)) foo (int i, struct S s);
+int __attribute__((noinline)) bar (int i, struct S s);
+int __attribute__((noinline)) baz (int i, struct S s);
+
+
+int __attribute__((noinline))
+bar (int i, struct S s)
+{
+  return baz (i, s);
+}
+
+int __attribute__((noinline))
+baz (int i, struct S s)
+{
+  return foo (i, s);
+}
+
+int __attribute__((noinline))
+foo (int i, struct S s)
+{
+  if (i == 2)
+    return 0;
+  else
+    return s.b * s.b + bar (i - 1, s);
+}
+
+volatile int g;
+
+void entry (void)
+{
+  struct S s;
+  s.b = 4;
+  g = bar (g, s);
+}
+
+
+void entry2 (void)
+{
+  struct S s;
+  s.b = 6;
+  g = baz (g, s);
+}
+
+
+/* { dg-final { scan-ipa-dump-times "adding an extra caller" 2 "cp" } } */