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Commit 272eac85 authored by Roman Shirokiy's avatar Roman Shirokiy
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Fix overconfident assert in ScalarEvolution::isImpliedViaMerge 

We can have AddRec with loops having many predecessors.
This changes an assert to an early return.

Differential Revision: https://reviews.llvm.org/D48766

llvm-svn: 335965
parent 9bd44390
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