[llvm-dev] [Machine IR] Analyzing Assembly Source Code in MIR passes

Aaron Smith via llvm-dev
Mon, 25 Nov 2019 14:15:08 -0000

Llvm-mctoll will raise a binary back to LLVM IR.
Not exactly what you want but it might be something you can leverage.

https://github.com/microsoft/llvm-mctoll

On Mon, Nov 25, 2019 at 1:19 PM Nicolai Hähnle via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> On Thu, Nov 21, 2019 at 3:37 AM Lele Ma via llvm-dev
> <llvm-dev at lists.llvm.org> wrote:
> > My goal is to write LLVM Machine IR (MIR) passes to analyze the
assembly
> source code. But it seems I need to find a way to translate the handwritten
> assembly code into MIR format first.
> >
> > Is there any materials, or any modules in LLVM source code, that can
> help to translate assembly code into LLVM MIR for analysis?
> >
> > Or is there any easier ways to analyze assembly code in MIR passes
> without translating it?
>
> MachineIR is designed for code generation, not for general assembly
> representation. MIR is even not necessarily able to represent all
> assembly instructions that a target's hardware supports. The
> disassembler produces MCInsts, and if you wanted to go from there back
> to MachineIR, you'd have to write your own target-specific code to do
> so.
>
> Cheers,
> Nicolai
>
>
>
> >
> > Best Regards,
> > Lele Ma
> >
> >
> > _______________________________________________
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> > llvm-dev at lists.llvm.org
> > https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
>
>
> --
> Lerne, wie die Welt wirklich ist,
> aber vergiss niemals, wie sie sein sollte.
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