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Commit 5a3d893b authored by Sanjoy Das's avatar Sanjoy Das
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[SCEV] Change the interface for SolveQuadraticEquation; NFC 

Use Optional<T> to denote the absence of a solution, not
SCEVCouldNotCompute.  This makes the usage of SolveQuadraticEquation
somewhat simpler.

llvm-svn: 272752
parent 16afcddb
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