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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - No debuginfo location for second basic block in the same line"
href="https://bugs.llvm.org/show_bug.cgi?id=32123">32123</a>
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<th>Summary</th>
<td>No debuginfo location for second basic block in the same line
</td>
</tr>
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<th>Product</th>
<td>libraries
</td>
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<th>Version</th>
<td>3.9
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>DebugInfo
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>arielb1@mail.tau.ac.il
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=18046" name="attach_18046" title="IR with bad codegen">attachment 18046</a> <a href="attachment.cgi?id=18046&action=edit" title="IR with bad codegen">[details]</a></span>
IR with bad codegen
When there are 2 consecutive basic blocks (even if they don't branch to one
another at all) on the same DI code line, no .loc debuginfo is emitted on the
second basic block, so breakpoints into it get missed and step-over jumps over
it
## Meta
$ dpkg -S `which llc-3.9`
llvm-3.9: /usr/bin/llc-3.9
$ dpkg-query -W -f='${Version}\n' llvm-3.9
1:3.9.1-4
## STR & actual result
$ llc-3.9 di.ll -relocation-model=pic
$ gcc di.s
$ gdb ./a.out
...
(gdb) b di.rs:3
Breakpoint 1 at 0x677: file /cache/di.rs, line 3.
(gdb) r
Starting program: /cache/a.out
[Inferior 1 (process 16580) exited with code 0160]
(gdb) q
; How was my breakpoint skipped?
## Expected Result
Both calls to `bar` are in line 3, and the second call is run, so the
breakpoint should get hit (equivalently, stepping through using `next` should
go through lines 2->3->4).</pre>
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