[llvm-dev] Find instruction's offset

Friedman, Eli via llvm-dev llvm-dev at lists.llvm.org
Mon Jan 23 15:59:24 PST 2017

Your question isn't really clear what kind of offset you need, or 
exactly you're planning to do with the offset.

In assembly, if you have two labels in the same section, you can write 
the offset between them using subtraction, e.g. ".L3 - .L1".  The 
assembler will resolve this to an actual number.


On 1/23/2017 9:29 AM, fami Hoseini via llvm-dev wrote:
> I don't know if my question was super easy or maybe it is not clear. 
> I'm still in need of the answer and appreciate any help.When LLVM 
> creates assembly code it should somehow create instructions' program 
> counter (offset) right? how to get this information?
> Thank you,
> Fateme
> On Mon, Jan 9, 2017 at 5:07 PM, fami Hoseini <hoseini.f at gmail.com 
> <mailto:hoseini.f at gmail.com>> wrote:
>     Hi,
>     Is there a way to get instruction's offset at compile time with
>     llvm for ARM?
>     I am trying to create a map between instructions at compile time
>     and this run-time info. Since PC is a relative value, I am trying
>     to use the instruction's offset as a constant property of
>     instruction to create this map. I think offset information should
>     be available to create the executable, if so where to find it?
>     Thank you for your help,
>     Fami
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