re PR ipa/79776 (ICE on valid code in insert_vi_for_tree, at tree-ssa-structalias.c:2807)

2017-03-27  Richard Biener  <rguenther@suse.de>

	PR ipa/79776
	* tree-ssa-structalias.c (associate_varinfo_to_alias): Skip
	inlined thunk clones.

	* g++.dg/ipa/pr79776.C: New testcase.

From-SVN: r246494

gcc/ChangeLog

+2017-03-27  Richard Biener  <rguenther@suse.de>
+
+	PR ipa/79776
+	* tree-ssa-structalias.c (associate_varinfo_to_alias): Skip
+	inlined thunk clones.
+
 2017-03-27  Jakub Jelinek  <jakub@redhat.com>
 
 	PR sanitizer/80168

gcc/testsuite/ChangeLog

+2017-03-27  Richard Biener  <rguenther@suse.de>
+
+	PR ipa/79776
+	* g++.dg/ipa/pr79776.C: New testcase.
+
 2017-03-27  Jakub Jelinek  <jakub@redhat.com>
 
 	PR sanitizer/80168

gcc/testsuite/g++.dg/ipa/pr79776.C

+// PR ipa/71146
+// { dg-do compile }
+// { dg-options "-O3 -fipa-pta" }
+
+typedef enum { X } E;
+struct A {
+  virtual void bar ();
+};
+struct B {
+  virtual E fn (const char *, int, int *) = 0;
+};
+struct C : A, B {
+  E fn (const char *, int, int *);
+  void fn2 ();
+  B *foo;
+};
+void C::fn2 () {
+  if (!foo)
+    return;
+  foo->fn (0, 0, 0);
+}
+E
+C::fn (const char *, int, int *)
+{
+  fn2 ();
+  foo = 0;
+  fn (0, 0, 0);
+  return X;
+}

gcc/tree-ssa-structalias.c

@@ -7615,7 +7615,9 @@ struct pt_solution ipa_escaped_pt
 static bool
 associate_varinfo_to_alias (struct cgraph_node *node, void *data)
 {
-  if ((node->alias || node->thunk.thunk_p)
+  if ((node->alias
+       || (node->thunk.thunk_p
+	   && ! node->global.inlined_to))
       && node->analyzed)
     insert_vi_for_tree (node->decl, (varinfo_t)data);
   return false;