Avoid global bitmap space in ranger.

gcc/ChangeLog:

	* gimple-range-cache.cc (update_list::update_list): Add m_bitmaps.
	(update_list::~update_list): Initialize m_bitmaps.
	* gimple-range-cache.h (ssa_lazy_cache): Add m_bitmaps.
	* gimple-range.cc (enable_ranger): Remove global bitmap
	initialization.
	(disable_ranger): Remove global bitmap release.

1 files changed, 7 insertions, 2 deletions

diff --git a/gcc/gimple-range-cache.h b/gcc/gimple-range-cache.h
index 63410d5..0ea34d3 100644
--- a/gcc/gimple-range-cache.h
+++ b/gcc/gimple-range-cache.h
@@ -78,8 +78,12 @@ protected:
 class ssa_lazy_cache : public ssa_cache
 {
 public:
-  inline ssa_lazy_cache () { active_p = BITMAP_ALLOC (NULL); }
-  inline ~ssa_lazy_cache () { BITMAP_FREE (active_p); }
+  inline ssa_lazy_cache ()
+  {
+    bitmap_obstack_initialize (&m_bitmaps);
+    active_p = BITMAP_ALLOC (&m_bitmaps);
+  }
+  inline ~ssa_lazy_cache () { bitmap_obstack_release (&m_bitmaps); }
   inline bool empty_p () const { return bitmap_empty_p (active_p); }
   virtual bool has_range (tree name) const;
   virtual bool set_range (tree name, const vrange &r);
@@ -89,6 +93,7 @@ public:
   virtual void clear ();
   void merge (const ssa_lazy_cache &);
 protected:
+  bitmap_obstack m_bitmaps;
   bitmap active_p;
 };