Chandler Carruth 1b0f8fde38 [PM] Teach LVI to correctly invalidate itself when its dependencies ...

become unavailable.

The AssumptionCache is now immutable but it still needs to respond to
DomTree invalidation if it ended up caching one.

This lets us remove one of the explicit invalidates of LVI but the
other one continues to avoid hitting a latent bug.

llvm-svn: 292769

2017-01-23 06:35:12 +00:00

..

invalidation.ll

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