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Partial Vectorization

Split loops to allow vectorization take place.

Non-vectorizable loop
DO I = 1, N
  A(I) = A(I-1)*X
  B(I) = C(I)**Y
ENDDO
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V

Non-vectorizable loop
DO I = 1, N
  A(I) = A(I-1)*X
ENDDO
Vectorizable loop
DO I = 1, N
  B(I) = C(I)**Y
ENDDO

Author: Wolfgang Schreiner
Last modification: November 15, 1996