re PR middle-end/65595 (Linux kernel build failure: ICE: in as_a, at is-a.h:192)

	PR middle-end/65595
	* cgraph.c (cgraph_update_edges_for_call_stmt_node): Only
	do redirection if the call is not optimized out.

	* gcc.c-torture/compile/pr65595.c: New testcase.

From-SVN: r221726

gcc/ChangeLog

+2015-03-26  Jan Hubicka  <hubicka@ucw.cz>
+
+	PR middle-end/65595
+	* cgraph.c (cgraph_update_edges_for_call_stmt_node): Only
+	do redirection if the call is not optimized out.
+
 2015-03-27  Ilya Enkovich  <ilya.enkovich@intel.com>
 
 	PR target/65495

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 (e->callee
+	  if (new_call && e->callee
 	      && DECL_BUILT_IN_CLASS (e->callee->decl) == BUILT_IN_NORMAL
 	      && DECL_FUNCTION_CODE (e->callee->decl) == BUILT_IN_UNREACHABLE)
 	    {

gcc/testsuite/ChangeLog

+2015-03-26  Jan Hubicka  <hubicka@ucw.cz>
+
+	PR middle-end/65595
+	* gcc.c-torture/compile/pr65595.c: New testcase.
+
 2015-03-27  Marek Polacek  <polacek@redhat.com>
 
 	PR sanitizer/65583

gcc/testsuite/gcc.c-torture/compile/pr65595.c

+extern void *memcpy(void *, const void *, unsigned long);
+struct in6_addr {
+  struct {
+    int u6_addr32[4];
+  };
+};
+struct foo {
+  struct in6_addr daddr;
+  struct in6_addr saddr;
+} a;
+extern void ip6_route_output(struct foo, int);
+int b;
+static void find_route_ipv6(struct in6_addr *p1) {
+  if (p1)
+    memcpy(0, p1, sizeof(struct in6_addr));
+  ip6_route_output(a, b);
+}
+void cxgbi_ep_connect() { find_route_ipv6(0); }
+