implement a replacement for if_marked

gcc/ChangeLog:

2014-11-20  Trevor Saunders  <tsaunders@mozilla.com>

	* doc/gty.texi: Document the new cache gty attribute.
	* gengtype.c (finish_cache_funcs): New function.
	(write_roots): Call gt_clear_cache on global variables with the cache
	gty attribute.
	* ggc-common.c (ggc_mark_roots): Call gt_clear_caches.
	* ggc.h (gt_clear_caches): New declaration.
	* hash-table.h (struct ggc_cache_hasher): New hasher for caches in gc
	memory.
	(gt_cleare_cache): New function.
	* emit-rtl.c, rtl.h, tree.c: Use hash_table instead of htab.

From-SVN: r217866

1 files changed, 1 insertions, 1 deletions

diff --git a/gcc/rtl.h b/gcc/rtl.h
index 3bfb6bf..b9d62ae 100644
--- a/gcc/rtl.h
+++ b/gcc/rtl.h
@@ -181,7 +181,7 @@ struct GTY(()) mem_attrs
    object in the low part of a 4-byte register, the OFFSET field
    will be -3 rather than 0.  */
 
-struct GTY(()) reg_attrs {
+struct GTY((for_user)) reg_attrs {
   tree decl;			/* decl corresponding to REG.  */
   HOST_WIDE_INT offset;		/* Offset from start of DECL.  */
 };