[Patch]change the cost for small trees in SLP vectorizer

Yi Jiang yjiang at apple.com
Mon Sep 23 17:05:55 PDT 2013


Hi,

In the SLP vectorizer, we do not try to vectorize tiny trees and set the cost to zero and the default threshold is zero. But we may use -slp-threshold to set it to negative value. To guarantee that we always disable the vectorization on tiny trees, we want to set it to infinity. 

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