Just to be clear, I have to add a function name printf in the module with no body. And I can call the function. This will automatically call the printf function which is defined in the library.<br><br>Tarun Agrawal<br><br>
<div class="gmail_quote">On Wed, Feb 8, 2012 at 11:34 PM, John Criswell <span dir="ltr"><<a href="mailto:criswell@illinois.edu">criswell@illinois.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"><div class="im">
On 2/8/12 11:55 AM, tarun agrawal wrote:
<blockquote type="cite">
Hi,<br>
<br>
I am trying to insert a instruction for printf or cout. My aim is
to print a integer and a string value using that instruction,
which are already there in the code. <br>
but I am not able to understand how to do it. Any help would be
great help.<br>
</blockquote>
<br></div>
You want to insert a call instruction that calls the printf
function. You'll need to insert a Function for printf (with no
body) if no printf function exists within the LLVM module you're
transforming.<br>
<br>
So, the code will look something like:<br>
<br>
Function * F = M.getOrInsertFunction ("printf", ...);<br>
CallInst::Create (F, ...);<br>
<br>
Be sure to look at the doxygen docs for exact method names and which
parameters go where; I've skipped over such details above.<br>
<br>
-- John T.<br>
<br>
<blockquote type="cite"><div class="im">
<br>
<br>
<br>
Thanks and Regards,<br>
Tarun Agrawal<br>
<br>
<fieldset></fieldset>
<br>
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</pre>
</blockquote>
<br>
</div>
</blockquote></div><br>