Phi instructions should invalidate their string cache when new incomings are added#661

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trbabb wants to merge 2 commits intonumba:mainfrom

trbabb:stale-cache-bug

Commits on Dec 1, 2020

If a new incoming is added, the string cache is guaranteed to be invalid
trbabb
committed
Found more cases where mutated instructions should invalidate the string cache.
trbabb
committed