PR debug/43762

[pf3gnuchains/gcc-fork.git] / gcc / tree-ssa-loop-ivcanon.c

diff --git a/gcc/tree-ssa-loop-ivcanon.c b/gcc/tree-ssa-loop-ivcanon.c
index df48dfd..12383d7 100644 (file)
--- a/gcc/tree-ssa-loop-ivcanon.c
+++ b/gcc/tree-ssa-loop-ivcanon.c
@@ -1,5 +1,6 @@
 /* Induction variable canonicalization.
-   Copyright (C) 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2005, 2007, 2008, 2010
+   Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -37,17 +38,15 @@ along with GCC; see the file COPYING3.  If not see
 #include "coretypes.h"
 #include "tm.h"
 #include "tree.h"
-#include "rtl.h"
 #include "tm_p.h"
-#include "hard-reg-set.h"
 #include "basic-block.h"
-#include "output.h"
 #include "diagnostic.h"
+#include "tree-pretty-print.h"
+#include "gimple-pretty-print.h"
 #include "tree-flow.h"
 #include "tree-dump.h"
 #include "cfgloop.h"
 #include "tree-pass.h"
-#include "ggc.h"
 #include "tree-chrec.h"
 #include "tree-scalar-evolution.h"
 #include "params.h"
@@ -522,6 +521,7 @@ tree_unroll_loops_completely (bool may_increase_size, bool unroll_outer)
   struct loop *loop;
   bool changed;
   enum unroll_level ul;
+  int iteration = 0;
 
   do
     {
@@ -554,7 +554,8 @@ tree_unroll_loops_completely (bool may_increase_size, bool unroll_outer)
          scev_reset ();
        }
     }
-  while (changed);
+  while (changed
+        && ++iteration <= PARAM_VALUE (PARAM_MAX_UNROLL_ITERATIONS));
 
   return 0;
 }