[PATCH][OpenCL] Fixing the crash in clang due to .hi and .odd accesses in vectors of odd size

[Anastasia Stulova]

Hello,

I would like to submit a patch that fixes the crash in clang at code
generation phase. This problem appears when a store into .hi or .odd of a
vector of odd size is performed that cause an assertion to happen due to out
of bound element access in SmallVector.

The patch file contains the fix and a test program that cause the crash.

Please review them and let me know if ok to check it in.

Thanks,
Anastasia

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