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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 - SIMD: various "error in backend: Cannot select...""
href="https://bugs.llvm.org/show_bug.cgi?id=43139">43139</a>
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<tr>
<th>Summary</th>
<td>SIMD: various "error in backend: Cannot select..."
</td>
</tr>
<tr>
<th>Product</th>
<td>new-bugs
</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>
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<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>new bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>eustas.ru@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=22443" name="attach_22443" title="preprocessed source">attachment 22443</a> <a href="attachment.cgi?id=22443&action=edit" title="preprocessed source">[details]</a></span>
preprocessed source
Checked on several builds from version 8.0.0 (trunk 342117) to 9.0.0 (trunk
366207)
Error location / "bad" instruction changes with slight code modifications.
Example output:
fatal error: error in backend: Cannot select: 0x9615a38: v4f32 =
X86ISD::VRNDSCALE 0x974aa80, Constant:i32<8>
0x974aa80: v4f32,ch = CopyFromReg 0x64fc3b8, Register:v4f32 %82
0x9803138: v4f32 = Register %82
0x9750920: i32 = Constant<8>
In function:
_ZZN4twim12_GLOBAL__N_114simulateEncodeEiRSt6vectorIPNS0_8FragmentESaIS3_EERKNS_11CodecParamsEENK3$_2clERKSt8functionIFDv4_fSC_EE
clang: error: clang frontend command failed with exit code 70 (use -v to see
invocation)
clang version 9.0.0 (trunk 366207)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/local/bin
Preprocessed source and script attached.
Steps to reproduce (using git and docker):
git clone <a href="https://github.com/eustas/2im.git">https://github.com/eustas/2im.git</a>
cd 2im
git checkout b39f82e4f6bf7a2e2a491e3cabaa53641e5e332a
docker run -it -v `pwd`/c:/c --entrypoint=/bin/bash
gcr.io/cloud-marketplace-containers/google/bazel@sha256:707089be09a8d4c28c140dc943d4e8b5757fa8ae10c2753063951a087ae83168
# entered the container
cd /c/
bazel build :main
# leave the container
exit</pre>
</div>
</p>
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