<html><head><meta http-equiv="Content-Type" content="text/html charset=windows-1252"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Thanks John.<div class=""><br class=""></div><div class="">Does this solve the problem of analysis availability though? If I still have to run the function analyses manually, I might as well keep rolling with the CallGraphSCCPass. (I probably should have mentioned that this is what I’m using right now.)</div><div class=""><br class=""></div><div class="">Félix</div><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">Le 2015-05-19 à 10:12:32, John Criswell <<a href="mailto:jtcriswel@gmail.com" class="">jtcriswel@gmail.com</a>> a écrit :</div><br class="Apple-interchange-newline"><div class="">
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<div class="moz-cite-prefix">On 5/18/15 10:45 PM, Félix Cloutier
wrote:<br class="">
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<blockquote cite="mid:E9ACAC14-F02C-4C55-AA48-6C1E8DBDBD06@yahoo.ca" type="cite" class="">
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Hi all,
<div class=""><br class="">
</div>
<div class="">I have one analysis pass that I want to perform on
call graph SCCs. However, for each function in the SCC, I need
function-level analyses, like the dominator tree and the memory
dependency analysis.</div>
<div class=""><br class="">
</div>
<div class="">I’ve <a moz-do-not-send="true" href="http://stackoverflow.com/questions/30059622/using-dominatortreewrapperpass-in-callgraphsccpass" class="">been told before</a> that these were not available
from a CallGraphSCCPass. What would be the best approach for me
to access this information? Should I run the passes manually, or
is there another, more pass-scheduler-friendly approach?</div>
</blockquote>
<br class="">
I would write a ModulePass that simply iterates over the call
graph. LLVM provides a CallGraph analysis which one can use to find
SCCs; DSA has an analysis called CallTargets which does "real"
CallGraph analysis (which means that it tries to reason about
function pointers, though I cannot guarantee that its reasoning will
be as accurate as you want).<br class="">
<br class="">
If you use a ModulePass, can you analyze any part of the program you
like, and you can use FunctionPasses.<br class="">
<br class="">
Regards,<br class="">
<br class="">
John Criswell<br class="">
<br class="">
<blockquote cite="mid:E9ACAC14-F02C-4C55-AA48-6C1E8DBDBD06@yahoo.ca" type="cite" class="">
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<div class="">Félix</div>
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</blockquote>
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<br class="">
<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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