[LLVMdev] [PATCH / PROPOSAL] bitcode encoding that is ~15% smaller for large bitcode files...

[Robert Muth]

Another option to deal with negatives is to use zig-zag encoding:
https://developers.google.com/protocol-buffers/docs/encoding
This "penalizes" positive ints with an extra bit and requires more
surgery - ymmv.


On Wed, Sep 26, 2012 at 5:07 AM, Renato Golin <rengolin at systemcall.org> wrote:
> On 26 September 2012 01:08, Jan Voung <jvoung at chromium.org> wrote:
>> - Forward references will create negative-valued ids (which end up being
>> written out as large 32-bit integers, as far as I could tell).
>
> Can you use an SLEB-like representation?
>
> It's probably not going to be backwards compatible, but if there isn't
> an SLEB/ULEB representation in bitcode, I'd say it's a good
> improvement. ;)
>
>
> --
> cheers,
> --renato
>
> http://systemcall.org/
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