What else shall I do to commit my patch to mainline?

[Konstantin Vladimirov via llvm-commits]

Hi,

I created some time ago review:

https://reviews.llvm.org/D18036

This is not critical change, but it increases inline assembly
conformance with GCC (specifically -- multi-letter constraints, like
"A32").

There have been a silence for a while. Can someone guide me in what to
do next. I've never committed anything to mainline and feel little
lost.

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With best regards, Konstantin