RTEMS ARM Applications Supplement
The macro ARM_HAS_CLZ
is set to 1 to indicate that
the architectural version has the clz
instruction.
On ARM architectural version 5 and above, the count
leading zeroes instruction (clz
) is available and
can be used to speed up the find first bit operation.
The use of this instruction significantly speeds up the
scheduling associated with a thread blocking.
RTEMS ARM Applications Supplement
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