tree bb2c4a04fcf8d76d90c1771188d5fc3ec03fbaa3
parent a79e97e495bfb34a93f74ea377caec87b6c89993
author Serge Guelton <sguelton@redhat.com> 1550243849 +0000
committer Serge Guelton <sguelton@redhat.com> 1550243849 +0000

OptionalStorage implementation for trivial type, take III

This is another attempt at implementating optional storage
for trivially copyable type, using an union instead of a
raw buffer to hold the actual storage. This make it possible
to get rid of the reinterpret_cast, and hopefully to fix the UB
of the previous attempts.

This validates fine on my laptop for gcc 8.2 and gcc 4.8, I'll
revert if it breaks the validation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@354137 91177308-0d34-0410-b5e6-96231b3b80d8