Peter Collingbourne 58e8e3505d LowerBitSets: Avoid reusing byte set addresses.
Each use of the byte array uses a different alias. This makes the
backend less likely to reuse previously computed byte array addresses,
improving the security of the CFI mechanism based on this pass.

Differential Revision: http://reviews.llvm.org/D8455

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@232770 91177308-0d34-0410-b5e6-96231b3b80d8
2015-03-19 22:02:10 +00:00
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