gimple-fold.c (gimple_fold_call): Properly keep virtual SSA form up-to-date when...

2014-10-15  Richard Biener  <rguenther@suse.de>

	* gimple-fold.c (gimple_fold_call): Properly keep virtual
	SSA form up-to-date when devirtualizing a call to
	__builtin_unreachable and avoid fixing up EH info here.

From-SVN: r216266

gcc/ChangeLog

+2014-10-15  Richard Biener  <rguenther@suse.de>
+
+	* gimple-fold.c (gimple_fold_call): Properly keep virtual
+	SSA form up-to-date when devirtualizing a call to
+	__builtin_unreachable and avoid fixing up EH info here.
+
 2014-10-15  Alexander Ivchenko  <alexander.ivchenko@intel.com>
 	    Maxim Kuznetsov  <maxim.kuznetsov@intel.com>
 	    Anna Tikhonova  <anna.tikhonova@intel.com>

gcc/gimple-fold.c

@@ -2629,7 +2629,11 @@ gimple_fold_call (gimple_stmt_iterator *gsi, bool inplace)
 		      gsi_insert_before (gsi, new_stmt, GSI_NEW_STMT);
 		    }
 		  else
-		    gsi_replace (gsi, new_stmt, true);
+		    {
+		      gimple_set_vuse (new_stmt, gimple_vuse (stmt));
+		      gimple_set_vdef (new_stmt, gimple_vdef (stmt));
+		      gsi_replace (gsi, new_stmt, false);
+		    }
 		  return true;
 		}
 	    }