[PATCH v2 0/4] Optimize red-black tree insert/extract

[Sebastian Huber]

Code coverage analysis of the red-black tree insert/extract operations defined
in <sys/tree.h> showed that the macros contain dead code.  This patch set
simplifies some expressions and add specialized rotations.

v2:

Add comments in patch 3 and 4.

Sebastian Huber (4):
  sys/tree.h: Simplify loop condition
  sys/tree.h: Simplify chain of conditions
  sys/tree.h: Add parent rotations
  sys/tree.h: Red child with black sibling rotations

 newlib/libc/include/sys/tree.h | 90 +++++++++++++++++++++++++++++++---
 1 file changed, 82 insertions(+), 8 deletions(-)

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2.26.2