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  1. Mar 19, 1990
    • wlott's avatar
      Spiffed up ASH derived type optimizer. If the shift amount is reasonably · 48d97225
      wlott authored
      small, (e.g. (integer 0 15)) it will shift the range of the shiftee to
      obtain the domain.
      
      Changed the %ldb transform to map to (logand (ash num (- pos)) (mask size))
      if the result is going to be a fixnum.
      
      Added transforms for floor, mod, truncate, and rem that check to see if the
      argument is a constant power of 2, and if so, change the divide into a
      shift.
      48d97225
  2. Mar 10, 1990
  3. Mar 05, 1990
  4. Feb 08, 1990
  5. Feb 06, 1990
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