Charles Saternos 81929b6bb0 [ThinLTO] Add FunctionAttrs to ThinLTO index
Adds function attributes to index: ReadNone, ReadOnly, NoRecurse, NoAlias. This attributes will be used for future ThinLTO optimizations that will propagate function attributes across modules.

llvm-svn: 310061
2017-08-04 16:00:58 +00:00
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