Florian Hahn 0eab9d5823 [SCEV] Verify that all mapped SCEV AddRecs refer to valid loops. ...

This check helps to guard against cases where expressions referring to
invalidated/deleted loops are not properly invalidated.

The additional check is motivated by the reproducer shared for 8fdac7cb7a
and I think in general make sense as a sanity check.

Reviewed By: reames

Differential Revision: https://reviews.llvm.org/D88166

2020-09-30 12:46:55 +01:00

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