<html>
<head>
<base href="https://bugs.llvm.org/">
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - x32 Cannot emit physreg copy instruction"
href="https://bugs.llvm.org/show_bug.cgi?id=51672">51672</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>x32 Cannot emit physreg copy instruction
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>12.0
</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>Backend: X86
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>uko.koknevics@zimperium.com
</td>
</tr>
<tr>
<th>CC</th>
<td>craig.topper@gmail.com, llvm-bugs@lists.llvm.org, llvm-dev@redking.me.uk, pengfei.wang@intel.com, spatel+llvm@rotateright.com
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=25199" name="attach_25199" title="minified .bc file">attachment 25199</a> <a href="attachment.cgi?id=25199&action=edit" title="minified .bc file">[details]</a></span>
minified .bc file
`llc --mtriple=x86_64-linux-gnux32 bugpoint-reduced-simplified.bc` fails.
Compiling for `x86_64-linux-gnu`, `i386-linux-gnu`, `aarch64-linux-gnu` works
fine, didn't test on any other targets.
Failed with Debian bullseye's llvm 11.0.1 (1:11.0-51+nmu5), custom-built
versions from 11.0.0 to 12.0.1. (Stack trace is from Debian's llvm as the
custom-built ones aren't built with all the symbols.)
The `.bc` file was generated by `clang++ -O2 -mx32 -c main.cpp -emit-llvm` and
then minified with `bugpoint` as per instructions. `g++ -O2 -mx32` (Debian
bullseye 4:10.2.1-1) compiles the same `main.cpp` file with no issues.
Stack dump:
0. Program arguments: llc --mtriple=x86_64-linux-gnux32
bugpoint-reduced-simplified.bc
1. Running pass 'Function Pass Manager' on module
'bugpoint-reduced-simplified.bc'.
2. Running pass 'Post-RA pseudo instruction expansion pass' on function
'@_Z1bv'
#0 0x00007f9c75dfaf8f llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/usr/lib/x86_64-linux-gnu/libLLVM-11.so.1+0xbd0f8f)
#1 0x00007f9c75df92f0 llvm::sys::RunSignalHandlers()
(/usr/lib/x86_64-linux-gnu/libLLVM-11.so.1+0xbcf2f0)
#2 0x00007f9c75dfb465 (/usr/lib/x86_64-linux-gnu/libLLVM-11.so.1+0xbd1465)
#3 0x00007f9c7521c140 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x14140)
#4 0x00007f9c74d53ce1 raise ./signal/../sysdeps/unix/sysv/linux/raise.c:51:1
#5 0x00007f9c74d3d537 abort ./stdlib/abort.c:81:7
#6 0x00007f9c75d4ad68 (/usr/lib/x86_64-linux-gnu/libLLVM-11.so.1+0xb20d68)
#7 0x00007f9c75d4ab88 (/usr/lib/x86_64-linux-gnu/libLLVM-11.so.1+0xb20b88)
#8 0x00007f9c77f38bad (/usr/lib/x86_64-linux-gnu/libLLVM-11.so.1+0x2d0ebad)
#9 0x00007f9c75ff73bf (/usr/lib/x86_64-linux-gnu/libLLVM-11.so.1+0xdcd3bf)
#10 0x00007f9c760ce1ae
llvm::MachineFunctionPass::runOnFunction(llvm::Function&)
(/usr/lib/x86_64-linux-gnu/libLLVM-11.so.1+0xea41ae)
#11 0x00007f9c75f0a059 llvm::FPPassManager::runOnFunction(llvm::Function&)
(/usr/lib/x86_64-linux-gnu/libLLVM-11.so.1+0xce0059)
#12 0x00007f9c75f0f603 llvm::FPPassManager::runOnModule(llvm::Module&)
(/usr/lib/x86_64-linux-gnu/libLLVM-11.so.1+0xce5603)
#13 0x00007f9c75f0a670 llvm::legacy::PassManagerImpl::run(llvm::Module&)
(/usr/lib/x86_64-linux-gnu/libLLVM-11.so.1+0xce0670)
#14 0x000000000040e0df main (/usr/lib/llvm-11/bin/llc+0x40e0df)
#15 0x00007f9c74d3ed0a __libc_start_main ./csu/../csu/libc-start.c:308:16
#16 0x000000000040ba2a _start (/usr/lib/llvm-11/bin/llc+0x40ba2a)
Aborted</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>