llvm dev - Jul 2010 - [LLVMdev] passing parameters for a analysis pass

Hi,

I want to pass parameter to a analysis pass. My pass need to use some 
result from some other tools. I can hard code a file name into my pass, 
and let my pass read input there, but what if I do not want the file 
name to be hard coded?

Is it possible to do that? If yes, where can I find some documentation 
about it?

Thanks,
Guoliang

You can use llvm::sys::Path::GetTemporaryDirectory() and put the
inputs and outputs there.

Reid

On Wed, Jul 7, 2010 at 4:23 PM, Guoliang Jin <jingl1345 at gmail.com>
wrote:
>  Hi,
>
> I want to pass parameter to a analysis pass. My pass need to use some
> result from some other tools. I can hard code a file name into my pass,
> and let my pass read input there, but what if I do not want the file
> name to be hard coded?
>
> Is it possible to do that? If yes, where can I find some documentation
> about it?
>
> Thanks,
> Guoliang
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>

If you think a commandline option is the way to go, LLVM makes it
pretty easy to do so, see the documentation here:
http://llvm.org/docs/CommandLine.html .

Mostly you can just add an appropriate "cl::opt<string>" option
(for
your filename, for example) and you're on your way.

~Will

On Wed, Jul 7, 2010 at 9:55 PM, Reid Kleckner <reid.kleckner at gmail.com>
wrote:
> You can use llvm::sys::Path::GetTemporaryDirectory() and put the
> inputs and outputs there.
>
> Reid
>
> On Wed, Jul 7, 2010 at 4:23 PM, Guoliang Jin <jingl1345 at gmail.com>
wrote:
>>  Hi,
>>
>> I want to pass parameter to a analysis pass. My pass need to use some
>> result from some other tools. I can hard code a file name into my pass,
>> and let my pass read input there, but what if I do not want the file
>> name to be hard coded?
>>
>> Is it possible to do that? If yes, where can I find some documentation
>> about it?
>>
>> Thanks,
>> Guoliang
>> _______________________________________________
>> LLVM Developers mailing list
>> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
>> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>>
>
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>

On Jul 7, 2010, at 4:23 PM, Guoliang Jin wrote:
> I want to pass parameter to a analysis pass. My pass need to use some
> result from some other tools.
The getAnalysis function returns a reference to a pass. Once you have  
the reference you can call the pass's member functions or access its  
member variables to send/receive information.

http://llvm.org/docs/WritingAnLLVMPass.html#getAnalysis

Trevor