Max Kazantsev 266c087b9d Return "[IndVars] Smart hard uses detection" ...

The patch has been reverted because it ended up prohibiting propagation
of a constant to exit value. For such values, we should skip all checks
related to hard uses because propagating a constant is always profitable.

Differential Revision: https://reviews.llvm.org/D53691

llvm-svn: 346397

2018-11-08 11:54:35 +00:00

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