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+Wed Aug 29 11:30:10 2007 Tanaka Akira <akr@fsij.org>
+
+ * include/ruby/st.h (struct st_table): add entries_packed 1-bit
+ bitfield. decrease num_bins 1-bit.
+
+ * st.c: pack numhash which have 5 or less entries in bins.
+ (st_init_table_with_size): setup entries_packed flag.
+ (st_clear): support packed mode.
+ (st_lookup): ditto.
+ (st_insert): ditto.
+ (st_add_direct): ditto.
+ (st_copy): ditto.
+ (st_delete): ditto.
+ (st_foreach): ditto.
+ (st_reverse_foreach): ditto.
+ (unpack_entries): new function for converting to unpacked mode.
+
Wed Aug 29 10:46:37 2007 Yukihiro Matsumoto <matz@ruby-lang.org>
* include/ruby/defines.h (flush_register_windows): call "ta 0x03"