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Commit 5632722c authored by Andrew Trick's avatar Andrew Trick
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MachineScheduler: add some book-keeping to fix an assert. 

Fixe for Bug 20057 - Assertion failied in llvm::SUnit* llvm::SchedBoundary::pickOnlyChoice(): Assertion `i <= (HazardRec->getMaxLookAhead() + MaxObservedStall) && "permanent hazard"'

Thanks to Chad for the test case.

llvm-svn: 211865
parent f6ae844e
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