[NVPTX] [ping] Changing DrvInterface from command line option to target feature

[Dmitry N. Mikushin]

Adding DrvInterface initialization in constructor.

Please, anyone?

2013/5/6 Dmitry N. Mikushin <maemarcus at gmail.com>

> Dear all,
>
> This patch addresses request http://llvm.org/bugs/show_bug.cgi?id=14367by changing NVPTX DrvInterface from command line option (unreachable from
> TargetMachine API) to target feature (could be specified through feature
> string of TargetMachine API).
>
> Please review!
>
> Thanks,
> - D.
>
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