[llvm-dev] How to generate a .ll file with functions' parameter names

[Alberto Barbaro via llvm-dev]

Hi David,
Thanks for your email. I'm just trying to perform some basic analysis on
the IR. For instance, is it possible to understand if the variable %10
depends on the value of the first parameter? I know that the first
parameter can be referenced as %0 but a proper name would increase the
readability. It is not so crucial for me atm.

Thanks
Alberto

On Mon, Dec 9, 2019, 11:01 David Chisnall via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> Hi Alberto,
>
> Note that even with this, there isn't necessarily a 1:1 correspondence
> between LLVM IR parameters and clang parameters.  For example, a struct
> passed by value in a C function may be one IR parameter per field, or
> may be packed into an integer large enough to store the whole thing.
> Similarly, return values may be indirect via sret pointers or they may
> be explicit return values but of a different type (for example, on i386
> a return of struct of a pair of int- or pointer-sized values may be
> returned as a single i64 in LLVM IR).
>
> It would help to understand what you are trying to do, because there may
> be a better way of achieving your goal.
>
> David
>
>
> On 08/12/2019 10:19, Alberto Barbaro via llvm-dev wrote:
> > Hi Tim,
> > My bad, I have installed a newer version of clang and all worked.
> >
> > Thanks
> >
> > On Sun, Dec 8, 2019, 10:05 Tim Northover <t.p.northover at gmail.com
> > <mailto:t.p.northover at gmail.com>> wrote:
> >
> >     On Sun, 8 Dec 2019 at 09:54, Alberto Barbaro via llvm-dev
> >     <llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org>> wrote:
> >      > thanks for your answer. Unfortunately I'm still using llvm 6.0
> >     and in llvm-dis I don't see that option. I tried reading the full
> >     list of options but I didn't see an alternative.
> >
> >     The option is for Clang. Once you have the IR generated it's too
> late,
> >     the names will already have been discarded.
> >
> >     Cheers.
> >
> >     Tim.
> >
> >
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> >
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