Paul E. Murphy 25dba0ad05 powerpc: Add optimized P8 strspn
This utilizes vectors and bitmasks.  For small needle, large
haystack, the performance improvement is upto 8x.  For short
strings (0-4B), the cost of computing the bitmask dominates,
and is a tad slower.
2016-04-07 15:51:28 -05:00
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