const SCEV *getExact(ScalarEvolution *SE) const;
/// getExact - Return the number of times this loop exit may fall through
- /// to the back edge. The loop is guaranteed not to exit via this block
- /// before this number of iterations, but may exit via another block.
+ /// to the back edge, or SCEVCouldNotCompute. The loop is guaranteed not
+ /// to exit via this block before this number of iterations, but may exit
+ /// via another block.
const SCEV *getExact(BasicBlock *ExitingBlock, ScalarEvolution *SE) const;
/// getMax - Get the max backedge taken count for the loop.