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[POWERPC] Optimize fls64() on 64-bit processors
author
Paul Mackerras
<paulus@samba.org>
Fri, 18 Apr 2008 04:26:08 +0000
(14:26 +1000)
committer
Paul Mackerras
<paulus@samba.org>
Fri, 18 Apr 2008 06:25:15 +0000
(16:25 +1000)
64-bit powerpc processors can find the leftmost 1 bit in a 64-bit
doubleword in one instruction, so use that rather than using the
generic fls64(), which does two 32-bit fls() calls.
Signed-off-by: Paul Mackerras <paulus@samba.org>
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git.openpandora.org / pandora-kernel.git / commitdiff