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<base href="http://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Clang Fails to LLVM When Aggressive Optimization Flags Are Used"
href="http://llvm.org/bugs/show_bug.cgi?id=17889">17889</a>
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<th>Summary</th>
<td>Clang Fails to LLVM When Aggressive Optimization Flags Are Used
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>Macintosh
</td>
</tr>
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<th>OS</th>
<td>MacOS X
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>-New Bugs
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>mathpup@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=11523" name="attach_11523" title="log from ./configure">attachment 11523</a> <a href="attachment.cgi?id=11523&action=edit" title="log from ./configure">[details]</a></span>
log from ./configure
I am using recent version of LLVM from svn to build LLVM itself. This time I
decided to try some aggressive optimization settings:
CFLAGS='-O3 -flto -fslp-vectorize-aggressive -mavx'
The build quickly fails with the errors
Intrinsic name not mangled correctly for type arguments!
i64 (i8*, i1)* @llvm.objectsize.i64.p0i8
Broken module found, compilation aborted!
Stack dump:
0. Running pass 'Function Pass Manager' on module 'ld-temp.o'.
1. Running pass 'Module Verifier' on function '@p_ere'
clang: error: unable to execute command: Illegal instruction: 4
clang: error: linker command failed due to signal (use -v to see invocation)
I am attaching the config.log and output from the compiler. Let me know if you
need more information.</pre>
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