[PATCH] D26420: Encode duplication factor from loop vectorization and loop unrolling to discriminator.

[Dehao Chen via Phabricator via llvm-commits]

danielcdh added a comment.

In https://reviews.llvm.org/D26420#611614, @hfinkel wrote:

> In https://reviews.llvm.org/D26420#611383, @danielcdh wrote:
>
> > Updated the encoding algorithm to use the lowest bit to represent whether BaseDiscriminator/DuplicationFactor is available.
> >
> > With this change, the debug info size impact is demonstrated in the last column of below:
>
>
> What are the other columns?


They are copied from the previous experiment:

The first column of data represents the current implementation. The 2nd column is the experiment (fitting all DP into one byte), which represent the upper-bound of any encoding.


https://reviews.llvm.org/D26420