mlaurenzano: vector access optmization in dddg builder
mlaurenzano: vector access optmization in dddg builder

Signed-off-by: Sophia Shao <2245cc0943c1f3556bbf0068e407d9ea7e47dc0c@eecs.harvard.edu>

giosalv/526-aladdin,giosalv/526-aladdin,giosalv/526-aladdin,giosalv/526-aladdin