If we optimize a function before gathering feedback it may be
peppered with soft deoptimizations. So it can't help but deoptimize.
A judicious reading of the code isn't enough to determine what the
optimization state should be in the face of such chaotic gyrations.

BUG=
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/1069363003

Cr-Commit-Position: refs/heads/master@{#27671}