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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - codegen regression with i386-linux"
href="https://bugs.llvm.org/show_bug.cgi?id=47278">47278</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>codegen regression with i386-linux
</td>
</tr>
<tr>
<th>Product</th>
<td>new-bugs
</td>
</tr>
<tr>
<th>Version</th>
<td>11.0
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>release blocker
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>new bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>andrew@ziglang.org
</td>
</tr>
<tr>
<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>The zig standard library test "PackedIntArray" is regressed with LLVM 11 RC1
and RC2.
The test case is here:
<a href="https://github.com/ziglang/zig/blob/f9bd049c89e4d2b4d3f51a937ec2114c3cac9176/lib/std/packed_int_array.zig#L321">https://github.com/ziglang/zig/blob/f9bd049c89e4d2b4d3f51a937ec2114c3cac9176/lib/std/packed_int_array.zig#L321</a>
In this bug report I will provide a pure LLVM IR reproduction, which you can
run like this:
~/local/llvm10-release/bin/clang-10 -o test test.ll -nostartfiles
-nodefaultlibs -target i386-unknown-linux-unknown compiler_rt.ll c.ll
-fuse-ld=$HOME/local/llvm10-release/bin/ld.lld -static
./test
echo $?
(prints 0)
~/local/llvm11-release/bin/clang-11 -o test test.ll -nostartfiles
-nodefaultlibs -target i386-unknown-linux-unknown compiler_rt.ll c.ll
-fuse-ld=$HOME/local/llvm11-release/bin/ld.lld -static
./test
echo $?
(prints 1)</pre>
</div>
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