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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Invalid optimization assumption, two external symbols of different names can't alias"
href="http://llvm.org/bugs/show_bug.cgi?id=22597">22597</a>
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<th>Summary</th>
<td>Invalid optimization assumption, two external symbols of different names can't alias
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>3.3
</td>
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<th>Hardware</th>
<td>Macintosh
</td>
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<th>OS</th>
<td>All
</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>LLVM Codegen
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
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<th>Reporter</th>
<td>kevin.waugh@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>int f() {
extern int foo asm("foo");
extern int bar asm("bar");
return &foo == &bar; /* optimizer reduces to false */
}
clang -emit-llvm -s tmp.c
@"\01foo" = external global i32
@"\01bar" = external global i32
define i32 @f() nounwind ssp uwtable {
ret i32 0
}
Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
Target: x86_64-apple-darwin14.0.0
Thread model: posix</pre>
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