re PR ipa/65600 (bost testsuite failure: ICE: Segmentation fault)

	PR ipa/65600
	* cgraph.c (cgraph_update_edges_for_call_stmt_node): Fix the case
	of optimized out indirect call.
	(redirect_to_unreachable): Always build symbol table node for
	BUILT_IN_UNREACHABLE
	* g++.dg/torture/pr65600.C: New testcase.

From-SVN: r221735

gcc/ChangeLog

+2015-03-27  Jan Hubicka  <hubicka@ucw.cz>
+
+	PR ipa/65600
+	* cgraph.c (cgraph_update_edges_for_call_stmt_node): Fix the case
+	of optimized out indirect call.
+	(redirect_to_unreachable): Always build symbol table node for
+	BUILT_IN_UNREACHABLE
+
 2015-03-27  Vladimir Makarov  <vmakarov@redhat.com>
 
 	PR target/65407

gcc/cgraph.c

@@ -1516,7 +1516,7 @@ cgraph_update_edges_for_call_stmt_node (cgraph_node *node,
       if (e)
 	{
 	  /* Keep calls marked as dead dead.  */
-	  if (new_call && e->callee
+	  if (new_stmt && is_gimple_call (new_stmt) && e->callee
 	      && DECL_BUILT_IN_CLASS (e->callee->decl) == BUILT_IN_NORMAL
 	      && DECL_FUNCTION_CODE (e->callee->decl) == BUILT_IN_UNREACHABLE)
 	    {

gcc/ipa-inline-analysis.c

@@ -766,15 +766,15 @@ static struct cgraph_edge *
 redirect_to_unreachable (struct cgraph_edge *e)
 {
   struct cgraph_node *callee = !e->inline_failed ? e->callee : NULL;
+  struct cgraph_node *target = cgraph_node::get_create
+		      (builtin_decl_implicit (BUILT_IN_UNREACHABLE));
 
   if (e->speculative)
-    e = e->resolve_speculation (builtin_decl_implicit (BUILT_IN_UNREACHABLE));
+    e = e->resolve_speculation (target->decl);
   else if (!e->callee)
-    e->make_direct (cgraph_node::get_create
-		      (builtin_decl_implicit (BUILT_IN_UNREACHABLE)));
+    e->make_direct (target);
   else
-    e->redirect_callee (cgraph_node::get_create
-			(builtin_decl_implicit (BUILT_IN_UNREACHABLE)));
+    e->redirect_callee (target);
   struct inline_edge_summary *es = inline_edge_summary (e);
   e->inline_failed = CIF_UNREACHABLE;
   e->frequency = 0;

gcc/testsuite/ChangeLog

+2015-03-27  Jan Hubicka  <hubicka@ucw.cz>
+
+	PR ipa/65600
+	* g++.dg/torture/pr65600.C: New testcase.
+
 2015-03-27  Vladimir Makarov  <vmakarov@redhat.com>
 
 	PR target/65407

gcc/testsuite/g++.dg/torture/pr65600.C

+// { dg-do compile }
+// { dg-options "-std=c++11" }
+class A {
+public:
+  virtual void m_fn1() {}
+  int weak_release___trans_tmp_1;
+  void m_fn2() {
+    __asm__("\n\n\n\n");
+    if (weak_release___trans_tmp_1)
+      m_fn1();
+  }
+};
+class weak_count {
+  A *pi_;
+
+public:
+  weak_count() : pi_() {}
+  ~weak_count() {
+    if (pi_)
+      pi_->m_fn2();
+  }
+};
+class B {
+  weak_count pn;
+};
+int
+main() { B a; }
+