Move infer_manager to a range_query oracle.

Turn the infer_manager class into an always available oracle accessible via a
range_query object.  Also assocaite each inferrred range with it's
originating stmt.

	* gimple-range-cache.cc (ranger_cache::ranger_cache): Create an infer
	oracle instead of a local member.
	(ranger_cache::~ranger_cache): Destroy the oracle.
	(ranger_cache::edge_range): Use oracle.
	(ranger_cache::fill_block_cache): Likewise.
	(ranger_cache::range_from_dom): Likewise.
	(ranger_cache::apply_inferred_ranges): Likewise.
	* gimple-range-cache.h (ranger_cache::m_exit): Delete.
	* gimple-range-infer.cc (infer_oracle): New static object;
	(class infer_oracle): New.
	(non_null_wrapper::non_null_wrapper): New.
	(non_null_wrapper::add_nonzero): New.
	(non_null_wrapper::add_range): New.
	(non_null_loadstore): Use nonnull_wrapper.
	(gimple_infer_range::gimple_infer_range): New alternate constructor.
	(exit_range::stmt): New.
	(infer_range_manager::has_range_p): Combine seperate methods.
	(infer_range_manager::maybe_adjust_range): Adjust has_range_p call.
	(infer_range_manager::add_ranges): New.
	(infer_range_manager::add_range): Take stmt rather than BB.
	(infer_range_manager::add_nonzero): Adjust from BB to stmt.
	* gimple-range-infer.h (class gimple_infer_range): Adjust methods.
	(infer_range_oracle): New.
	(class infer_range_manager): Inherit from infer_range_oracle.
	Adjust methods.
	* gimple-range-path.cc (path_range_query::range_defined_in_block): Use
	oracle.
	(path_range_query::adjust_for_non_null_uses): Likewise.
	* gimple-range.cc (gimple_ranger::range_on_edge): Likewise
	(gimple_ranger::register_transitive_inferred_ranges): Likewise.
	* value-query.cc (default_infer_oracle): New.
	(range_query::create_infer_oracle): New.
	(range_query::destroy_infer_oracle): New.
	(range_query::share_query): Copy infer pointer.
	(range_query::range_query): Initialize infer pointer.
	(range_query::~range_query): destroy infer object.
	* value-query.h (range_query::infer_oracle): New.
	(range_query::create_infer_oracle): New prototype.
	(range_query::destroy_infer_oracle): New prototype.
	(range_query::m_infer): New.

1 files changed, 20 insertions, 0 deletions

diff --git a/gcc/value-query.cc b/gcc/value-query.cc
index adcc59c..41b581b 100644
--- a/gcc/value-query.cc
+++ b/gcc/value-query.cc
@@ -181,6 +181,23 @@ range_query::dump (FILE *)
 // Default oracle for all range queries.  This contains no storage and thus
 // can be used anywhere.
 relation_oracle default_relation_oracle;
+infer_range_oracle default_infer_oracle;
+
+void
+range_query::create_infer_oracle (bool do_search)
+{
+  gcc_checking_assert (m_infer == &default_infer_oracle);
+  m_infer = new infer_range_manager (do_search);
+  gcc_checking_assert (m_infer);
+}
+
+void
+range_query::destroy_infer_oracle ()
+{
+  if (m_infer && m_infer != &default_infer_oracle)
+    delete m_infer;
+  m_infer = &default_infer_oracle;
+}
 
 // Create dominance based range oracle for the current query if dom info is
 // available.
@@ -215,12 +232,14 @@ void
 range_query::share_query (range_query &q)
 {
   m_relation = q.m_relation;
+  m_infer = q.m_infer;
   m_shared_copy_p = true;
 }
 
 range_query::range_query ()
 {
   m_relation = &default_relation_oracle;
+  m_infer = &default_infer_oracle;
   m_shared_copy_p = false;
 }
 
@@ -229,6 +248,7 @@ range_query::~range_query ()
   // Do not destroy anything if this is a shared copy.
   if (m_shared_copy_p)
     return;
+  destroy_infer_oracle ();
   destroy_relation_oracle ();
 }