[llvm-dev] Tag for using git describe on master

[Mehdi AMINI via llvm-dev]

Thanks Hans!

Is this something that we can document somewhere? (especially if we will
continue to maintain / create tags with each branching).

-- 
Mehdi


On Fri, Oct 25, 2019 at 1:06 PM Hans Wennborg via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> As first discussed in the giant "New LLVM git repository conversion
> prototype" thread, I've pushed a git tag that allows git-describe to
> be used for generating human readable commit names on master.
>
> The tag is "llvmorg-10-init", to be interpreted as "the initial commit
> with major version number 10". The idea is to add similar tags along
> with future version bumps.
>
> git describe generates a name like this:
>
> $ git describe a4783ef
> llvmorg-10-init-8348-ga4783ef58d3
>
> Where "llvmorg-10-init" is the tag name, 8348 is the number of commits
> since the tag (yay, monotonically incrementing commit numbers), and
> "a4783ef58d3" is the hash with "g" as a magic prefix to indicate it's
> a git hash.
>
> The name can be used to refer to commits directly (git only looks at
> the hash after the "g"):
>
> $ git show llvmorg-10-init-8348-ga4783ef58d3 -s --oneline
> a4783ef58d3 [Alignment][NFC] getMemoryOpCost uses MaybeAlign
>
>
> Thanks,
> Hans
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