[llvm-dev] Tool to reduce a module to just (one/more) function

[Johannes Doerfert via llvm-dev]

llvm-extract?

On 2/17/21 11:35 AM, Mircea Trofin via llvm-dev wrote:
> Apologies if I'm missing something obvious - the TL;DR; is: do we have /
> would folks find useful a tool that took a module and a function name and
> produced a valid module with just that function in, the rest being deleted
> - i.e. outright deleted if no internal calls, converted to a declaration
> otherwise; their metadata, too.
>
> My scenario is: large (think: thinlto backend) modules, and I want to focus
> on comparing regalloc policies for just one. Both in the debugger, as well
> as dbgs() debugging, would benefit from not having to care about
> anything else than this one function - especially when considering looking
> over a few subsequent function passes.
>
> Thanks!
>
>
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