<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 ERROR: unsupported libcall legalization in clang-11"
href="https://bugs.llvm.org/show_bug.cgi?id=47664">47664</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>LLVM ERROR: unsupported libcall legalization in clang-11
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>11.0
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>C++14
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>marcus.wagner@hpe.com
</td>
</tr>
<tr>
<th>CC</th>
<td>blitzrakete@gmail.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, marcus.wagner@hpe.com, richard-llvm@metafoo.co.uk
</td>
</tr></table>
<p>
<div>
<pre>```
Please, note that this bug categorization is the best I could come up with.
If this should not be submitted under "clang", please, re-classify as needed.
During a debug build with optimization level -O0 of a test case of
the AMReX software framework using the software environment modules
(gcc/9.2.0, mpich/ge/gcc/64/3.3.2, rocm/3.7.0)
an "LLVM ERROR: unsupported libcall legalization" occurred, which
resulted in a core dump and in the crash backtrace shown below.
This error did not occur when the optimization level was changed
from -O0 to -O3, where the latter case worked.
Also, when rocm/3.7.0 was swapped out for rocm/3.8.0,
this compiler error no longer resulted in a crash and a core dump.
Instead, the error message was then
fatal error: error in backend: unsupported libcall legalization
clang-11: error: clang frontend command failed with exit code 70 (use -v to
see invocation)
Here is the signature of the more severe form of presumably the
same compiler error:
LLVM ERROR: unsupported libcall legalization
PLEASE submit a bug report to <a href="https://bugs.llvm.org/">https://bugs.llvm.org/</a> and include the crash
backtrace.
Stack dump:
0. Program arguments: /opt/rocm-3.7.0/llvm/bin/llc
/tmp/CNS_advance-1a7add-gfx906-optimized-caf2ef.bc -O0
-mtriple=amdgcn-amd-amdhsa -mcpu=gfx906 -filetype=obj -o
/tmp/CNS_advance-1a7add-gfx906-2df49d.o
1. Running pass 'CallGraph Pass Manager' on module
'/tmp/CNS_advance-1a7add-gfx906-optimized-caf2ef.bc'.
2. Running pass 'AMDGPU DAG->DAG Pattern Instruction Selection' on
function '@_Z11cns_ctoprimiiiRKN5amrex6Array4IKdEERKNS0_IdEERK4Parm'
#0 0x00000000019c929a llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/opt/rocm-3.7.0/llvm/bin/llc+0x19c929a)
#1 0x00000000019c70a4 llvm::sys::RunSignalHandlers()
(/opt/rocm-3.7.0/llvm/bin/llc+0x19c70a4)
#2 0x00000000019c71e3 SignalHandler(int)
(/opt/rocm-3.7.0/llvm/bin/llc+0x19c71e3)
#3 0x000015555511ddd0 __restore_rt (/lib64/libpthread.so.0+0x12dd0)
#4 0x0000155553bb670f raise (/lib64/libc.so.6+0x3770f)
#5 0x0000155553ba0b25 abort (/lib64/libc.so.6+0x21b25)
#6 0x000000000194c248 llvm::report_fatal_error(llvm::Twine const&, bool)
(/opt/rocm-3.7.0/llvm/bin/llc+0x194c248)
#7 0x000000000194c368 (/opt/rocm-3.7.0/llvm/bin/llc+0x194c368)
#8 0x00000000008239c6 (/opt/rocm-3.7.0/llvm/bin/llc+0x8239c6)
#9 0x00000000017bd8bd
llvm::TargetLowering::LowerCallTo(llvm::TargetLowering::CallLoweringInfo&)
const (/opt/rocm-3.7.0/llvm/bin/llc+0x17bd8bd)
#10 0x0000000001882097 llvm::TargetLowering::makeLibCall(llvm::SelectionDAG&,
llvm::RTLIB::Libcall, llvm::EVT, llvm::ArrayRef<llvm::SDValue>,
llvm::TargetLowering::MakeLibCallOptions, llvm::SDLoc const&, llvm::SDValue)
const (/opt/rocm-3.7.0/llvm/bin/llc+0x1882097)
#11 0x0000000001883b95 llvm::TargetLowering::expandMULO(llvm::SDNode*,
llvm::SDValue&, llvm::SDValue&, llvm::SelectionDAG&) const
(/opt/rocm-3.7.0/llvm/bin/llc+0x1883b95)
#12 0x000000000178a874 (anonymous
namespace)::SelectionDAGLegalize::ExpandNode(llvm::SDNode*)
(/opt/rocm-3.7.0/llvm/bin/llc+0x178a874)
#13 0x000000000177fecb (anonymous
namespace)::SelectionDAGLegalize::LegalizeOp(llvm::SDNode*)
(/opt/rocm-3.7.0/llvm/bin/llc+0x177fecb)
#14 0x00000000017844df llvm::SelectionDAG::Legalize()
(/opt/rocm-3.7.0/llvm/bin/llc+0x17844df)
#15 0x0000000001840878 llvm::SelectionDAGISel::CodeGenAndEmitDAG()
(/opt/rocm-3.7.0/llvm/bin/llc+0x1840878)
#16 0x0000000001844adc
llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&)
(/opt/rocm-3.7.0/llvm/bin/llc+0x1844adc)
#17 0x0000000001846c4a
llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&)
(.part.803) (/opt/rocm-3.7.0/llvm/bin/llc+0x1846c4a)
#18 0x00000000008cf63a (anonymous
namespace)::AMDGPUDAGToDAGISel::runOnMachineFunction(llvm::MachineFunction&)
(/opt/rocm-3.7.0/llvm/bin/llc+0x8cf63a)
#19 0x0000000000fb7368
llvm::MachineFunctionPass::runOnFunction(llvm::Function&)
(/opt/rocm-3.7.0/llvm/bin/llc+0xfb7368)
#20 0x0000000001340db7 llvm::FPPassManager::runOnFunction(llvm::Function&)
(/opt/rocm-3.7.0/llvm/bin/llc+0x1340db7)
#21 0x0000000000c4a118 (anonymous
namespace)::CGPassManager::runOnModule(llvm::Module&)
(/opt/rocm-3.7.0/llvm/bin/llc+0xc4a118)
#22 0x0000000001341941 llvm::legacy::PassManagerImpl::run(llvm::Module&)
(/opt/rocm-3.7.0/llvm/bin/llc+0x1341941)
#23 0x00000000006cb15d compileModule(char**, llvm::LLVMContext&)
(/opt/rocm-3.7.0/llvm/bin/llc+0x6cb15d)
#24 0x000000000065e835 main (/opt/rocm-3.7.0/llvm/bin/llc+0x65e835)
#25 0x0000155553ba26a3 __libc_start_main (/lib64/libc.so.6+0x236a3)
#26 0x00000000006c4c0e _start (/opt/rocm-3.7.0/llvm/bin/llc+0x6c4c0e)
clang-11: error: unable to execute command: Aborted (core dumped)
clang-11: error: amdgcn-link command failed due to signal (use -v to see
invocation)
clang version 11.0.0
(/data/jenkins_workspace/centos_pipeline_job_8.1_rel-3.7/rocm-rel-3.7/rocm-3.7-20-20200817/8.1/external/llvm-project/clang
ee4e4ebbadcc8ea14ce99e34ed31ab31e94827ac)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /opt/rocm-3.7.0/llvm/bin
clang-11: note: diagnostic msg: Error generating preprocessed source(s).</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>