[LLVMdev] debugloc metadata variation

Sean Silva chisophugis at gmail.com
Wed Oct 22 17:41:22 PDT 2014

On Wed, Oct 22, 2014 at 4:57 PM, David Blaikie <dblaikie at gmail.com> wrote:

> Just working on some of the gmlt+fission debug info stuff and I came
> across a comment that might be relevant to reducing the number of distinct
> debugloc metadata nodes:
> "or some sub-optimal metadata that
>   // isn't structurally identical (see: file path/name info from clang,
> which
>   // includes the directory of the cpp file being built, even when the
> file name
>   // is absolute (such as an <> lookup header)))"
> Seems that the file path/name isn't well canonicalized so as to allow
> metadata level merging when linking. Might be helpful to figure out that
> issue at some point.

I wonder how much memory is spent on redundant path prefixes. E.g.


-- Sean Silva

> - David
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