re PR tree-optimization/51719 (ICE: verify_gimple failed: LHS in noreturn call…

re PR tree-optimization/51719 (ICE: verify_gimple failed: LHS in noreturn call with -fpartial-inlining -fprofile-use and exceptions)

	PR tree-optimization/51719
	* value-prof.c (gimple_ic): When indirect call isn't noreturn,
	but direct call is, clear direct call's lhs and don't add fallthrough
	edge from dcall_bb to join_bb and PHIs.

	* g++.dg/tree-prof/pr51719.C: New test.

From-SVN: r182832

gcc/ChangeLog

+2012-01-03  Jakub Jelinek  <jakub@redhat.com>
+
+	PR tree-optimization/51719
+	* value-prof.c (gimple_ic): When indirect call isn't noreturn,
+	but direct call is, clear direct call's lhs and don't add fallthrough
+	edge from dcall_bb to join_bb and PHIs.
+
 2012-01-03  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>
 
 	* config/s390/s390.md ("*cmp<mode>_ccs"): Fix comment mentioning

gcc/testsuite/ChangeLog

+2012-01-03  Jakub Jelinek  <jakub@redhat.com>
+
+	PR tree-optimization/51719
+	* g++.dg/tree-prof/pr51719.C: New test.
+
 2012-01-03  Richard Guenther  <rguenther@suse.de>
 
 	PR middle-end/51730

gcc/testsuite/g++.dg/tree-prof/pr51719.C

+// PR tree-optimization/51719
+// { dg-options "-O -fpartial-inlining" }
+
+int
+bar (void)
+{
+  throw 1;
+}
+
+int __attribute__ ((noinline, noclone))
+foo (int (*f) (void))
+{
+  try
+  {
+    return (*f) ();
+  }
+  catch (...)
+  {
+  }
+  return 0;
+}
+
+int
+main ()
+{
+  return foo (bar);
+}

gcc/value-prof.c

 /* Transformations based on profile information for values.
-   Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
+   Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
    Free Software Foundation, Inc.
 
 This file is part of GCC.
@@ -1149,7 +1149,7 @@ gimple_ic (gimple icall_stmt, struct cgraph_node *direct_call,
   tree optype = build_pointer_type (void_type_node);
   edge e_cd, e_ci, e_di, e_dj = NULL, e_ij;
   gimple_stmt_iterator gsi;
-  int lp_nr;
+  int lp_nr, dflags;
 
   cond_bb = gimple_bb (icall_stmt);
   gsi = gsi_for_stmt (icall_stmt);
@@ -1176,6 +1176,9 @@ gimple_ic (gimple icall_stmt, struct cgraph_node *direct_call,
   update_stmt (icall_stmt);
   dcall_stmt = gimple_copy (icall_stmt);
   gimple_call_set_fndecl (dcall_stmt, direct_call->decl);
+  dflags = flags_from_decl_or_type (direct_call->decl);
+  if ((dflags & ECF_NORETURN) != 0)
+    gimple_call_set_lhs (dcall_stmt, NULL_TREE);
   gsi_insert_before (&gsi, dcall_stmt, GSI_SAME_STMT);
 
   /* Fix CFG. */
@@ -1220,17 +1223,23 @@ gimple_ic (gimple icall_stmt, struct cgraph_node *direct_call,
 
   if (e_ij != NULL)
     {
+      if ((dflags & ECF_NORETURN) != 0)
+	e_ij->count = all;
+      else
+	{
 	  e_dj = make_edge (dcall_bb, join_bb, EDGE_FALLTHRU);
 	  e_dj->probability = REG_BR_PROB_BASE;
 	  e_dj->count = count;
 
-      e_ij->probability = REG_BR_PROB_BASE;
 	  e_ij->count = all - count;
 	}
+      e_ij->probability = REG_BR_PROB_BASE;
+    }
 
   /* Insert PHI node for the call result if necessary.  */
   if (gimple_call_lhs (icall_stmt)
-      && TREE_CODE (gimple_call_lhs (icall_stmt)) == SSA_NAME)
+      && TREE_CODE (gimple_call_lhs (icall_stmt)) == SSA_NAME
+      && (dflags & ECF_NORETURN) == 0)
     {
       tree result = gimple_call_lhs (icall_stmt);
       gimple phi = create_phi_node (result, join_bb);