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   memory (as done in fromString).
2. Implement Knuth divide more closely to what is recommended in his book.
3. Fix computation of the remainder for Knuth Divide (bad shifting).
4. Remove some cruft from the file

llvm-svn: 34518

A spill kills the register being stored. But it is later being reused by spiller, its live range has to be extended.

llvm-svn: 34517

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Initial check in of register scavenger. Its only current functionality is tracking live registers per MBB.

llvm-svn: 34511

llvm-svn: 34510

Loop Pass Manager's queue.

llvm-svn: 34509

rest of the passes in the queue for a loop.

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