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* Simplify some code with no functionality change. Make the test a lot moreNick Lewycky2011-01-231-15/+19
* Use value ranges to fold ext(trunc) in SCEV when possible.Nick Lewycky2011-01-231-0/+34
* Similarly, analyze truncate through multiply.Nick Lewycky2011-01-191-0/+8
* Add a missed SCEV fold that is required to continue analyzing the IR producedNick Lewycky2011-01-191-1/+9
* Add a missing SCEV simplification sext(zext x) --> zext x.Nick Lewycky2011-01-191-0/+8