How's the integration of DWARF support coming along?

Tuncer Ayaz tuncer.ayaz at
Wed Aug 13 15:07:52 UTC 2014

On Wed, Aug 13, 2014 at 5:02 PM, Johan Tibell wrote:
> Hi,
> How's the integration of DWARF support coming along? It's probably
> one of the most important improvements to the runtime in quite some
> time since unlocks *two* important features, namely
>  * trustworthy profiling (using e.g. Linux perf events and other
> low-overhead, code preserving, sampling profilers), and
>  * stack traces.
> The former is really important to move our core libraries
> performance up a notch. Right now -prof is too invasive for it to be
> useful when evaluating the hotspots in these libraries (which are
> already often heavily tuned).
> The latter one is really important for real life Haskell on the
> server, where you can sometimes can get some crash that only happens
> once a day under very specific conditions. Knowing where the crash
> happens is then *very* useful.

Doesn't it also enable using gdb and lldb, or is there another missing

More information about the ghc-devs mailing list