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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>For what it’s worth, I develop using Eclipse – it has
a superb GUI around gdb. The trick to debugging a custom compiler pass in
Eclipse is putting a break in PassManager::run and disabling / re-enabling one
of the breakpoints in your pass after you launch the debugger. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>-ben<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>--<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#888888'>"Believe you can, believe you can't; either way you're
right." -Henry Ford</span><span style='font-size:11.0pt;font-family:
"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> llvmdev-bounces@cs.uiuc.edu
[mailto:llvmdev-bounces@cs.uiuc.edu] <b>On Behalf Of </b>Pranav Garg<br>
<b>Sent:</b> Tuesday, April 20, 2010 12:16 AM<br>
<b>To:</b> John Criswell<br>
<b>Cc:</b> llvmdev@cs.uiuc.edu<br>
<b>Subject:</b> Re: [LLVMdev] Debugging using gdb<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'>Hi John,<br>
<br>
Yes, it was the problem of the namespace. Sorry for bugging for such a silly
mistake.<br>
<br>
Thanks<br>
Pranav<o:p></o:p></p>
<div>
<p class=MsoNormal>On Mon, Apr 19, 2010 at 9:33 AM, John Criswell <<a
href="mailto:criswell@uiuc.edu">criswell@uiuc.edu</a>> wrote:<o:p></o:p></p>
<div>
<div>
<p class=MsoNormal>Pranav Garg wrote:<o:p></o:p></p>
<p class=MsoNormal>Hi,<br>
<br>
I am trying to debug my llvm pass called -aa-eval-garg11 using gdb. However I
am not able to establish a breakpoint in any function of my pass. I have
compiled my<br>
pass with a debug build and I have also compiled the input file (using
llvm-gcc) with the -g flag. Given below is the exact output.<br>
<br>
<br>
(gdb) break llvm::PassManager::run<br>
Breakpoint 1 at 0x86be87c: file
/home/engr/cs426/llvm/llvm-2.6/lib/VMCore/PassManager.cpp, line 1558.<br>
(gdb) run pointer.bc -load ../Debug/lib/libMP1.so -basicaa -aa-eval-garg11<br>
Starting program: /home/engr/cs426/llvm/llvm-2.6-x86/Debug/bin/opt pointer.bc
-load ../Debug/lib/libMP1.so -basicaa -aa-eval-garg11<br>
[Thread debugging using libthread_db enabled]<br>
<br>
Breakpoint 1, llvm::PassManager::run (this=0xbfffe6f0, M=...) at
/home/engr/cs426/llvm/llvm-2.6/lib/VMCore/PassManager.cpp:1558<br>
1558 return PM->run(M);<br>
(gdb) break llvm::AAEvalTemp::PointsToFunc<br>
Can't find member of namespace, class, struct, or union named
"llvm::AAEvalTemp::PointsToFunc"<br>
Hint: try 'llvm::AAEvalTemp::PointsToFunc<TAB> or
'llvm::AAEvalTemp::PointsToFunc<ESC-?><br>
(Note leading single quote.)<br>
Make breakpoint pending on future shared library load? (y or [n]) n<br>
<br>
<br>
Is there some clear mistake in my way of using the gdb ?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
</div>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt'>Are you sure that your pass is
declared within the llvm namespace? Use the nm program on libMP1.so to
see if AAEvalTemp::PointsToFunc is declared in the llvm namespace or not.
Note: you may need to pipe the output of nm through c++filt to get
readable results.<br>
<br>
-- John T.<o:p></o:p></p>
<p class=MsoNormal><br>
Thanks.<br>
Pranav<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal><o:p> </o:p></p>
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