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* [IPSCCP] Move common functions to ValueLatticeUtils (NFC)Matthew Simpson2017-10-131-0/+44
This patch moves some common utility functions out of IPSCCP and makes them available globally. The functions determine if interprocedural data-flow analyses can propagate information through function returns, arguments, and global variables. Differential Revision: https://reviews.llvm.org/D37638 llvm-svn: 315719
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