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bug#6365: bidi data structure inefficiencies


From: Dan Nicolaescu
Subject: bug#6365: bidi data structure inefficiencies
Date: Sun, 06 Jun 2010 23:21:32 -0400
User-agent: Gnus/5.11 (Gnus v5.11) Emacs/22.1 (gnu/linux)

Some bidi data structures are bigger that they need to be, this
probably results in additional cache misses.
Examples:

struct bidi_saved_info could  use bitfields for the bidi_type_t members
Same for bidi_stack

bidi_it could use bitfields for a lot of it's members.






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