[llvm-dev] Standard way to remove llvm intrinsics

Alberto Barbaro via llvm-dev llvm-dev at lists.llvm.org
Tue Dec 17 23:44:39 PST 2019

Hi Eric,
Currently I'm mainly playing with interpreter and trying to understand how
it exactly works. I have noticed that lli complains when llvm.dbg.value is
encounter that why I wanted to remove it. Additionally, I would like to
understand that performances with and without intrinsics and the impact
they have on the interpreter in general.


On Wed, Dec 18, 2019, 00:33 Eric Christopher <echristo at gmail.com> wrote:

> Typically this isn't done, debug information is a bit of a special case. I
> don't see much of a reason to have tool support for this necessarily, but
> would be happy to hear about possible use cases etc?
> Thanks!
> -eric
> On Mon, Dec 16, 2019 at 12:04 PM Alberto Barbaro via llvm-dev <
> llvm-dev at lists.llvm.org> wrote:
>> Hi all,
>> it is not the first time that I need to remove intrinsics from a bc and
>> in the past I saw options like -strip-debug for opt. Now I would like to
>> remove all the occurrences of llvm.lifetime.start and llvm.lifetime.end. I
>> have done in just obtaining the .ll file, grep -v lifetime, redirecting it
>> to another .ll and use llvm-as.
>> I was wondering if there is a standard way to decide which intrinsics to
>> remove or if at the moment it is not possible.
>> Thanks
>> Alberto
>> _______________________________________________
>> LLVM Developers mailing list
>> llvm-dev at lists.llvm.org
>> https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
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