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SubjectRe: [PATCH] rbtree: avoid generating code twice for the cached versions
On Thu, 27 Jun 2019, Michel Lespinasse wrote:

>As was already noted in rbtree.h, the logic to cache rb_first (or rb_last)
>can easily be implemented externally to the core rbtree api.
>
>Change the implementation to do just that. Previously the update of
>rb_leftmost was wired deeper into the implemntation, but there were
>some disadvantages to that - mostly, lib/rbtree.c had separate
>instantiations for rb_insert_color() vs rb_insert_color_cached(), as well
>as rb_erase() vs rb_erase_cached(), which were doing exactly the same
>thing save for the rb_leftmost update at the start of either function.

Also:

text data bss dec hex filename
5405 120 0 5525 1595 lib/rbtree.o-vanilla
3827 96 0 3923 f53 lib/rbtree.o-patch

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