Merging r369251:

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r369251 | stulova | 2019-08-19 13:43:16 +0200 (Mon, 19 Aug 2019) | 10 lines

[OpenCL] Fix addr space deduction for pointers/references to arrays.

Rewrite the logic for detecting if we are deducing addr space of
a pointee type to take into account special logic for arrays. For
pointers/references to arrays we can have any number of parentheses
expressions as well as nested pointers.

Differential Revision: https://reviews.llvm.org/D66137


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llvm-svn: 369499