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

Alexey Proskuryakov ap at webkit.org
Wed Jun 17 17:21:01 PDT 2020

I frequently find it critically useful to see stack traces from debug builds, because of no inlining. So I don't think that we should do this. A local build does not help when the issue is not readily reproducible.

- Alexey

> 17 июня 2020 г., в 1:36 PM, Mark Lam <mark.lam at apple.com> написал(а):
> 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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