add c++/43145 tag to changelog and testcase

[pf3gnuchains/gcc-fork.git] / gcc / tree-scalar-evolution.c

diff --git a/gcc/tree-scalar-evolution.c b/gcc/tree-scalar-evolution.c
index 3ebc54e..e2ed1f5 100644 (file)
--- a/gcc/tree-scalar-evolution.c
+++ b/gcc/tree-scalar-evolution.c
@@ -1,5 +1,5 @@
 /* Scalar evolution detector.
-   Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009
+   Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
    Free Software Foundation, Inc.
    Contributed by Sebastian Pop <s.pop@laposte.net>
 
@@ -260,12 +260,10 @@ along with GCC; see the file COPYING3.  If not see
 #include "tm.h"
 #include "ggc.h"
 #include "tree.h"
-#include "real.h"
-
-/* These RTL headers are needed for basic-block.h.  */
-#include "rtl.h"
 #include "basic-block.h"
 #include "diagnostic.h"
+#include "tree-pretty-print.h"
+#include "gimple-pretty-print.h"
 #include "tree-flow.h"
 #include "tree-dump.h"
 #include "timevar.h"
@@ -3033,7 +3031,20 @@ scev_initialize (void)
     }
 }
 
-/* Cleans up the information cached by the scalar evolutions analysis.  */
+/* Cleans up the information cached by the scalar evolutions analysis
+   in the hash table.  */
+
+void
+scev_reset_htab (void)
+{
+  if (!scalar_evolution_info)
+    return;
+
+  htab_empty (scalar_evolution_info);
+}
+
+/* Cleans up the information cached by the scalar evolutions analysis
+   in the hash table and in the loop->nb_iterations.  */
 
 void
 scev_reset (void)
@@ -3041,10 +3052,11 @@ scev_reset (void)
   loop_iterator li;
   struct loop *loop;
 
-  if (!scalar_evolution_info || !current_loops)
+  scev_reset_htab ();
+
+  if (!current_loops)
     return;
 
-  htab_empty (scalar_evolution_info);
   FOR_EACH_LOOP (li, loop, 0)
     {
       loop->nb_iterations = NULL_TREE;