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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [NVPTX] Invalid .debug_pubnames in generated PTX with default nameTableKind"
href="https://bugs.llvm.org/show_bug.cgi?id=44845">44845</a>
</td>
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<tr>
<th>Summary</th>
<td>[NVPTX] Invalid .debug_pubnames in generated PTX with default nameTableKind
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</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>Backend: PTX
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>timshen91@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=23109" name="attach_23109" title="reproducer">attachment 23109</a> <a href="attachment.cgi?id=23109&action=edit" title="reproducer">[details]</a></span>
reproducer
The attached is a modified version of the test case cu-range-hole.ll. The
modification is to remove "nameTableKind: None" in the DICompileUnit metadata.
llc takes it and produces invalid PTX.
ptxas error message:
ptxas /tmp/tmpxft_00033edc_00000000-0_stdin, line 274; fatal : Parsing error
near '-': syntax error
ptxas fatal : Ptx assembly aborted due to errors
The offending lines in the generated PTX:
.section .debug_pubnames
{
.b32 LpubNames_end0-LpubNames_begin0 // Length of Public Names Info
LpubNames_begin0:
.b8 2 // DWARF Version
.b8 0
.b64 .debug_info // Offset of Compilation Unit Info
.b32 188 // Compilation Unit Length
.b32 102 // DIE offset
.b8 98 // External Name
.b8 0
.b32 141 // DIE offset
.b8 100 // External Name
.b8 0
.b32 0 // End Mark
LpubNames_end0:
}
I looks like PTX doesn't support labels or label arithmetic in sections (or at
all).</pre>
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