llvm dev - Feb 2010 - [LLVMdev] Programmatic compilation of C++ file into bitcode

On Feb 25, 2010, at 2:28 PM, Trevor Harmon wrote:
> I'm not sure how the other program can find the output, unless
> of course the analyzer simply dumps the file to a hard-coded
> location (/tmp?).

Replying to myself again...

After sifting through many of the existing transforms, I discovered  
that new command-line parameters can be added to opt simply by  
declaring them in the transform code, such as in this example from  
Internalize.cpp:

   static cl::opt<std::string>
     APIFile("internalize-public-api-file",
cl::value_desc("filename"),
       cl::desc("A file containing list of symbol names to
preserve"));

So, the calling program can simply pass the name of a file to opt as a  
parameter, and it will then know exactly where the analyzer will send  
its output.

Trevor

On Thursday 25 February 2010 17:30:24 Trevor Harmon
wrote:
> On Feb 25, 2010, at 2:28 PM, Trevor Harmon wrote:
> > I'm not sure how the other program can find the output, unless
> > of course the analyzer simply dumps the file to a hard-coded
> > location (/tmp?).
> 
> Replying to myself again...
> 
> After sifting through many of the existing transforms, I discovered
> that new command-line parameters can be added to opt simply by
> declaring them in the transform code, such as in this example from
> Internalize.cpp:
> 
>    static cl::opt<std::string>
>      APIFile("internalize-public-api-file",
cl::value_desc("filename"),
>        cl::desc("A file containing list of symbol names to
preserve"));
> 
> So, the calling program can simply pass the name of a file to opt as a
> parameter, and it will then know exactly where the analyzer will send
> its output.
Of course the option will only affect Passes that actually examine it.
I missed the earlier part of this thread.  What kind of output do you
need?  I'm guessing some sort of dataflow information.  

                                -Dave

On Feb 25, 2010, at 5:47 PM, David A. Greene wrote:
> I missed the earlier part of this thread.  What kind of output do you
> need?  I'm guessing some sort of dataflow information.
I'm not entirely sure at this point, but it will most likely be some  
representation of the control flow graph that's been processed and  
filtered in some way. The output won't contain data flow information,  
at least not yet.

Trevor