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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [DebugInfo] pointless pointer_type"
href="https://bugs.llvm.org/show_bug.cgi?id=36328">36328</a>
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<th>Summary</th>
<td>[DebugInfo] pointless pointer_type
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Windows NT
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>LLVM Codegen
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>paul_robinson@playstation.sony.com
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</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<p>
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<pre>It looks like Clang will add 'void *' to the retainedTypes even if
there are no references to it elsewhere in the metadata.
######################
$ cat t.c
void k(void *);
void g() {
int count = 2;
k((void *)&count);
}
$ clang -c -g t.c -S -emit-llvm
######################
In the IR, I see:
!0 = distinct !DICompileUnit(..., retainedTypes: !3)
!3 = !{!4}
!4 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
But there are no other uses of !4.
If I change 'void *' to 'int *' the pointer_type goes away.
Note that k() is not described in the metadata, regardless.</pre>
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