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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
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