Eli Friedman 74bed9d757 Make GlobalsAA ignore dead constant expressions. ...

Slightly improves the precision of GlobalsAA in certain situations, and
makes the behavior of optimization passes more predictable.

Differential Revision: https://reviews.llvm.org/D24104

llvm-svn: 283165

2016-10-04 00:03:55 +00:00

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