<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 - llvm-mc: ICE in llvm::AMDGPUInstPrinter::printU32ImmOperand for mattr=-code-object-v3 -mcpu=fiji"
href="https://bugs.llvm.org/show_bug.cgi?id=45887">45887</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>llvm-mc: ICE in llvm::AMDGPUInstPrinter::printU32ImmOperand for mattr=-code-object-v3 -mcpu=fiji
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>10.0
</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: AMDGPU
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>burnus@net-b.de
</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=23472" name="attach_23472" title="cc7kNLGI.mkoffload.2.s – assemble with: llvm-mc -mattr=-code-object-v3 -mcpu=fiji">attachment 23472</a> <a href="attachment.cgi?id=23472&action=edit" title="cc7kNLGI.mkoffload.2.s – assemble with: llvm-mc -mattr=-code-object-v3 -mcpu=fiji">[details]</a></span>
cc7kNLGI.mkoffload.2.s – assemble with: llvm-mc -mattr=-code-object-v3
-mcpu=fiji
Running the following command
/usr/bin/llvm-mc-10.0.0 -triple=amdgcn--amdhsa -mattr=-code-object-v3
-mcpu=fiji -filetype=obj -o /tmp/ccjCfcds.o cc7kNLGI.mkoffload.2.s
Gives a segfault (see below). At least it fails with OpenSUSE's LLVM 10 and
LLVM 9 and also with Debian's LLVM 9/10. The assembler file has been generated
with GCC 10, but in any case an ICE is wrong.
[Cf. also <a href="https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94278">https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94278</a>]
llvm::raw_ostream::operator<< (this=0x1, Fmt=...) at
../lib/Support/raw_ostream.cpp:309
309 size_t BufferBytesLeft = OutBufEnd - OutBufCur;
#1 0x00007ffff56d2388 in llvm::AMDGPUInstPrinter::printU32ImmOperand
(this=0x48a201, MI=0x48af18, OpNo=2, STI=..., O=...) at
../lib/Target/AMDGPU/MCTargetDesc/AMDGPUInstPrinter.cpp:78
78 O << formatHex(MI->getOperand(OpNo).getImm() & 0xffffffff);
(gdb) bt
#0 llvm::raw_ostream::operator<< (this=0x1, Fmt=...) at
../lib/Support/raw_ostream.cpp:309
#1 0x00007ffff56d2388 in llvm::AMDGPUInstPrinter::printU32ImmOperand
(this=0x48a201, MI=0x48af18, OpNo=2, STI=..., O=...) at
../lib/Target/AMDGPU/MCTargetDesc/AMDGPUInstPrinter.cpp:78
#2 llvm::AMDGPUInstPrinter::printInstruction (this=0x48a201, MI=<optimized
out>, Address=<optimized out>, STI=warning: RTTI symbol not found for class
'(anonymous namespace)::ELFSingleObjectWriter [clone
.llvm.9618930050404732398]'
..., O=...) at lib/Target/AMDGPU/AMDGPUGenAsmWriter.inc:33103</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>