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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Multiple evaluations of a GEP"
href="https://bugs.llvm.org/show_bug.cgi?id=51184">51184</a>
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<th>Summary</th>
<td>Multiple evaluations of a GEP
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
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<th>Version</th>
<td>trunk
</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>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Scalar Optimizations
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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</tr>
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<th>Reporter</th>
<td>momchil.velikov@arm.com
</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=25056" name="attach_25056" title="test case">attachment 25056</a> <a href="attachment.cgi?id=25056&action=edit" title="test case">[details]</a></span>
test case
In the attached test case there is this instruction
%h3 = getelementptr inbounds %struct.entry_t, %struct.entry_t* %2, i64
%idxprom, i32 0, i64 0, i32 0
and 12-13 more similar instructions like
%h3.3 = getelementptr inbounds %struct.entry_t, %struct.entry_t* %2, i64
%idxprom, i32 0, i64 3, i32 0
which begin with the same part `getelementptr inbounds %struct.entry_t,
%struct.entry_t* %2, i64 %idxprom`
When the attached test case is compiled with
`opt --passes="default<O3>" store.ll -S -o - | lcc`
the output assembly file still contains multiple evaluations of that part, e.g.
mov w15, #48
madd x15, x9, x15, x8
...
mov w13, #48
madd x13, x9, x13, x8
etc.</pre>
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