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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Infinite loop in a recursive call graph"
href="https://bugs.llvm.org/show_bug.cgi?id=49687">49687</a>
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<th>Summary</th>
<td>Infinite loop in a recursive call graph
</td>
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<th>Product</th>
<td>new-bugs
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>new bugs
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>pctammela@gmail.com
</td>
</tr>
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<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org
</td>
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=24681" name="attach_24681" title="Simplified IR found by bugpoint">attachment 24681</a> <a href="attachment.cgi?id=24681&action=edit" title="Simplified IR found by bugpoint">[details]</a></span>
Simplified IR found by bugpoint
I have a recursive call graph that is apparently entering an infinite
loop, at first I observed this when forcing inline in the optimization pipeline
but later bugpoint found a more concise pipeline that reproduces the bug.
Bugpoint found the following 'opt' invocation to enter the infinite loop:
opt -inline -simplifycfg -tailcallelim -loop-unroll
As a comparison, the original C code when compiled with GCC and the
'alwaysinline' attribute errors out, for all optimizations, with the following:
out.c: In function ‘__foo’:
out.c:252:50: error: inlining failed in call to always_inline
‘__bar’: function not inlinable</pre>
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