[webkit-dev] Switching open source Debug bots to building and testing with configuration --force-opt=O3

Simon Fraser simon.fraser at apple.com
Wed Jun 17 21:48:46 PDT 2020

I also object to losing good stack traces for crashes on Debug bots.

Also, I don't think Debug bots should build something different from what I build at my desk.


> On Jun 17, 2020, at 1:36 PM, Mark Lam <mark.lam at apple.com> wrote:
> Hi folks,
> We're planning to switch the JSC EWS bot and build.webkit.org <http://build.webkit.org/> Debug build and test bots to building with the following set first:
> ./Tools/Scripts/set-webkit-configuration --force-opt=O3
> This means the Debug builds will be built with optimization level forced to O3.
> Why are we doing this?
> 1. So that the JSC EWS will start catching ASSERT failures.
> 2. JSC stress test Debug bots have been timing out and not running tests at all.  Hopefully, this change will fix this issue.
> 3. Tests will run to completion faster and we’ll catch regressions sooner.
> The downside: crash stack traces will be like Release build stack traces.  But I don’t think we should let this deter us.  It’s not like there’s no stack information.  And just as we do with debugging Release build test failures, we can always do a Debug build locally to do our debugging.
> We would like to apply this change to all Debug build and test bots, not just the JSC ones.  Does anyone strongly object to this change?
> Thanks.
> Cheers,
> Mark
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> webkit-dev at lists.webkit.org
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