On 7/11/20 1:50 AM, Chris Lattner wrote: > On Jul 10, 2020, at 2:58 PM, Richard Smith via cfe-dev > <cfe-dev at lists.llvm.org <mailto:cfe-dev at lists.llvm.org>> wrote: >> >> One other thing I think we should consider: there will be substantial >> overlap between the incremental compilation, code generation, REPL, >> etc. of cling and that of lldb. For the initial integration of cling >> into LLVM, there's probably not much we can do about that, but it >> would seem beneficial for both cling and lldb if common parts could >> be shared where possible. As an extreme example, if we could fully >> unify the projects to the point where a user could switch into an >> 'lldb mode' in the middle of a cling session to do step-by-step >> debugging of code entered into the REPL, that would seem like an >> incredibly useful feature. Perhaps there's some common set of base >> functionality that can be factored out of lldb and cling and unified. >> It would likely be a good idea to start talking to the lldb folks >> about that early, in case it guides your work porting cling to trunk. > > This is a really good point. Â Iâm not sure how much awareness there is > on this list, but the Swift REPL is worth looking at if you havenât > seen it. Â It is built on/in LLDB, and provides some really nice user > experience features. > > For example, if you evaluate an expression that crashes, you get a > full backtrace and integrated debugger experience. Â There are a couple > of examples on this page, and more detailed info online: > https://swift.org/lldb/ Â Thanks Chris! The comments <https://reviews.llvm.org/D34444#793311> coming from John McCall allude to this that we need some broader discussion on how we do things for incremental compilation. I still have not forgotten that I need to get back to him with that ;) Â That's one of the challenges I see. Currently upstreaming our patches did not have enough context. Now I hope that we can start with something minimal (and likely wrong) but we will have a common tool in the context of which we can discuss how to make things better. Putting swift-repl folks, lldb folks and cling folks in one virtual room may be helpful. > > -Chris > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20200711/00fd294f/attachment.html>
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