[llvm-dev] Generate statepoints for given code

[Kavindu Gimhan Zoysa via llvm-dev]

Hi David,

The only use of C code is to generate the LLVM IR using -emit-llvm flags.
Because I need to generate an LLVM IR. My actual use case is to implement
accurate GC for LLVM. So I want to know how to generate statepoints for
given LLVM IR?

Kavindu Gimhan Zoysa,
BSc(Hons) | ENTC | UoM,
SSE | WSO2

GitHub <https://github.com/KavinduZoysa> LinkedIn
<https://www.linkedin.com/in/kavindu-gimhan-zoysa-85939a122/> Medium
<https://medium.com/@kavindugimhanzoysa>


On Sat, 8 May 2021 at 16:35, David Chisnall <David.Chisnall at cl.cam.ac.uk>
wrote:

> Hi,
>
> It’s not clear what you’re actually trying to do.  Are you trying to write
> a garbage collector for C?  That’s unlikely to benefit from the statepoint
> work because it’s designed for accurate GCs, whereas C intrinsically
> requires conservative GC (or some compiler or hardware changes to track
> pointer provenance through integer casts).
>
> David
>
> > On 7 May 2021, at 17:23, Kavindu Gimhan Zoysa via llvm-dev <
> llvm-dev at lists.llvm.org> wrote:
> >
> > Hi All,
> >
> > I am currently working on evaluating the support of the LLVM GC
> framework in order to design a garbage collector.
> >
> > I have followed the below docs.
> > https://releases.llvm.org/11.0.0/docs/GarbageCollection.html
> > https://releases.llvm.org/11.0.0/docs/Statepoints.html
> > https://releases.llvm.org/11.0.0/docs/StackMaps.html
> >
> > I am trying to generate the llvm IR with safepoints for the given C
> code. This repository contains relevant source files.
> > https://github.com/KavinduZoysa/test-GCs/tree/master/statepoints
> >
> > I generated statepoints for main.ll file I used the command opt-11
> --rewrite-statepoints-for-gc main.ll -S -o main-statepoints.ll
> >
> > I want to know the way I followed to generate statepoints is correct? If
> not the what is the best practice of generating statepoints(for give LLVM
> IR) for a garbage collector?
> >
> > Thank you,
> > Kavindu
> >
> > Kavindu Gimhan Zoysa,
> > BSc(Hons) | ENTC | UoM,
> > SSE | WSO2
> >
> > GitHub LinkedIn Medium
> > _______________________________________________
> > LLVM Developers mailing list
> > llvm-dev at lists.llvm.org
> > https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
>
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