Make opt_pass and gcc::pass_manager be GC-managed

2013-08-20  David Malcolm  <dmalcolm@redhat.com>

	Make opt_pass and gcc::pass_manager be GC-managed, so that pass
	instances can own GC refs.

	* Makefile.in (GTFILES): Add pass_manager.h and tree-pass.h.
	* context.c (gcc::context::gt_ggc_mx): Traverse passes_.
	(gcc::context::gt_pch_nx): Likewise.
	(gcc::context::gt_pch_nx):  Likewise.
	* ggc.h (gt_ggc_mx <T>): New.
	(gt_pch_nx_with_op <T>): New.
	(gt_pch_nx <T>): New.
	* passes.c (opt_pass::gt_ggc_mx): New.
	(opt_pass::gt_pch_nx): New.
	(opt_pass::gt_pch_nx_with_op): New.
	(pass_manager::gt_ggc_mx): New.
	(pass_manager::gt_pch_nx): New.
	(pass_manager::gt_pch_nx_with_op): New.
	(pass_manager::operator new): Use
	ggc_internal_cleared_alloc_stat rather than xcalloc.
	* pass_manager.h (class pass_manager): Add GTY((user)) marking.
	(pass_manager::gt_ggc_mx): New.
	(pass_manager::gt_pch_nx): New.
	(pass_manager::gt_pch_nx_with_op): New.
	* tree-pass.h (class opt_pass): Add GTY((user)) marking.
	(opt_pass::operator new): New.
	(opt_pass::gt_ggc_mx): New.
	(opt_pass::gt_pch_nx): New.
	(opt_pass::gt_pch_nx_with_op): New.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@201865 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 7 insertions, 2 deletions

diff --git a/gcc/pass_manager.h b/gcc/pass_manager.h
index 41d2c7605d2..a442bf1868a 100644
--- a/gcc/pass_manager.h
+++ b/gcc/pass_manager.h
@@ -44,13 +44,19 @@ namespace gcc {
 
 class context;
 
-class pass_manager
+class GTY((user)) pass_manager
 {
 public:
+  /* Ensure that instances are allocated in the GC-managed heap.  */
   void *operator new (size_t sz);
 
   pass_manager(context *ctxt);
 
+  /* GTY((user)) methods.  */
+  void gt_ggc_mx ();
+  void gt_pch_nx ();
+  void gt_pch_nx_with_op (gt_pointer_operator op, void *cookie);
+
   void register_pass (struct register_pass_info *pass_info);
   void register_one_dump_file (struct opt_pass *pass);
 
@@ -134,4 +140,3 @@ private:
 } // namespace gcc
 
 #endif /* ! GCC_PASS_MANAGER_H */
-