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<div class="moz-cite-prefix">On 5/18/15 2:16 PM, Stephen Thomas
wrote:<br>
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cite="mid:CA+U9gD0H0jzER2Ao38GDM6KosW5q_p0HVN+=Uw06d72ocFiWtw@mail.gmail.com"
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<div dir="ltr">I'd like to write an inter-modular analysis pass.
My understanding is that this should take the form of an LTO
pass. However, I have been unable to find any resources on the
mechanics of writing and running a custom LTO pass. Does anyone
have any pointers?</div>
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<br>
All you need to do is to write a ModulePass and modify the libLTO
plugin to run it. Writing a ModulePass is described in the "How to
Write an LLVM Pass" document in the LLVM documentation. To modify
libLTO, you'll need to read the documents on how to install it, and
you'll need to modify the plugin (in llvm/tools/LTO, I think).
Alternatively, you can modify the LLVM library that defines which
passes get run when you use -O2 and -flto optimization, but the
result is the same: you'll need to install a new libLTO plugin.<br>
<br>
Regards,<br>
<br>
John Criswell<br>
<br>
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<div>Thanks,</div>
<div>Steve</div>
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<pre class="moz-signature" cols="72">--
John Criswell
Assistant Professor
Department of Computer Science, University of Rochester
<a class="moz-txt-link-freetext" href="http://www.cs.rochester.edu/u/criswell">http://www.cs.rochester.edu/u/criswell</a></pre>
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