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%Time ExclSec CumulS #Calls sec/call Csec/c  Name
 66.7   1.270  1.659     30   0.0423 0.0553  PhraseHighlight::highligh
+t_text
...
 0.53   0.010  0.030      3   0.0033 0.0100  CGI::BEGIN
 0.53   0.010  1.777      1   0.0100 1.7770  SwishSearch::process_requ
+est
 0.53   0.010  1.728      1   0.0099 1.7285  SwishQuery::run_query

    @words = split /$wc_regexp/, $$text_ref;

WORD:
while ( $word_pos * 2 < @words ) {
...
} continue {
    $word_pos ++;
}