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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Instruction does not dominate all uses!"
href="https://bugs.llvm.org/show_bug.cgi?id=34619">34619</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Instruction does not dominate all uses!
</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>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>Transformation Utilities
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>paulsson@linux.vnet.ibm.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=19158" name="attach_19158" title="reduced testcase">attachment 19158</a> <a href="attachment.cgi?id=19158&action=edit" title="reduced testcase">[details]</a></span>
reduced testcase
It seems that trunk@313348 showed up in a git bisect for the following crash
with opt:
bin/opt -S -O3 -mtriple=systemz-unknown -mcpu=z13 tc_domuses.ll -o out.ll
Instruction does not dominate all uses!
%10 = load i32, i32* getelementptr inbounds ([4 x [4 x i32]], [4 x [4 x
i32]]* @dct_luma.m4, i64 0, i64 3, i64 0), align 4, !tbaa !1
%3 = insertelement <4 x i32> undef, i32 %10, i32 0
Instruction does not dominate all uses!
%11 = load i32, i32* getelementptr inbounds ([4 x [4 x i32]], [4 x [4 x
i32]]* @dct_luma.m4, i64 0, i64 3, i64 2), align 4, !tbaa !1
%5 = insertelement <4 x i32> %4, i32 %11, i32 2
Instruction does not dominate all uses!
%12 = load i32, i32* getelementptr inbounds ([4 x [4 x i32]], [4 x [4 x
i32]]* @dct_luma.m4, i64 0, i64 3, i64 3), align 4, !tbaa !1
%6 = insertelement <4 x i32> %5, i32 %12, i32 3
LLVM ERROR: Broken function found, compilation aborted!</pre>
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