<div dir="ltr">As Tim said, call_print is one of the root causes.<div><br></div><div>Another problem is that for a pass, you'd better use llvm::Module::getOrInsertFunction API.</div><div><br></div><div>Best Regards,</div>

<div>Hongxu Chen <br><div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, Dec 16, 2013 at 11:22 PM, Tim Northover-2 [via LLVM] <span dir="ltr"><<a href="/user/SendEmail.jtp?type=node&node=64418&i=0" target="_top" rel="nofollow" link="external">[hidden email]</a>></span> wrote:<br>

<blockquote style='border-left:2px solid #CCCCCC;padding:0 1em' class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">

        Hi Jin,

<br><br>It's difficult to say just from looking at a pass, but one thing looked odd:

<br><div class="im"><br>> CallInst *call_print = CallInst::Create(call_print,paramArrayRef,"",ins_temp);

<br><br></div>This looks very dodgy. The "call_print" being used as an argument is

<br>the (uninitialised) one that's just been declared. This could be the

source of the assertion failure (though a segfault is just as likely).

<br><br>Other than that I'd suggest hooking up a debugger and going up the

<br>call frames when that assertion hits. That should tell you exactly

which line of your pass is causing trouble.

Cheers.

Tim.

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