With latest v8, stock imaging-desaturate doesn't generate
TransitionElementsKind.
The effect can be observed by training it to have a TransitionElementsKind.
Furthermore, some instructions that depend on the input to the
HElementsTransition, like simple property Loads and Stores, may not
benefit
from
depending on the HTransition. It will prevent them from being hoisted
into an
outer loop beyond the inner loop's preheader by doing this.
Fixed.
http://codereview.chromium.org/10544133/
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