Merging r356198:

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r356198 | abataev | 2019-03-14 13:36:00 -0700 (Thu, 14 Mar 2019) | 5 lines

[OPENMP]Fix crash for the ordered(n) clause.

If the doacross lop construct is used and the loop counter is declare
outside of the loop, the compiler might crash trying to get the address
of the loop counter. Patch fixes this problem.
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llvm-svn: 358923