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<base href="https://llvm.org/bugs/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - openmp code prevents lto bootstrap"
href="https://llvm.org/bugs/show_bug.cgi?id=25679">25679</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>openmp code prevents lto bootstrap
</td>
</tr>
<tr>
<th>Product</th>
<td>OpenMP
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</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>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>Runtime Library
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>ismail@i10z.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Trying to compile clang with -flto -fuse-ld=gold on Linux x86-64 results in:
FAILED: : && /opt/clang/bin/clang -fPIC -fuse-ld=gold -flto -Wall -W
-Wno-unused-parameter -Wwrite-strings -Wmissing-field-initializers -pedantic
-Wno-long-long -Wno-comment -fcolor-diagnostics -O3 -stdlib=libc++ -Wl,-z,defs
-Wl,--warn-shared-textrel -Wl,--as-needed
-Wl,--version-script=/home/abuild/rpmbuild/BUILD/llvm/projects/openmp/runtime/src/exports_so.txt
-static-libgcc -Wl,-z,noexecstack -Wl,-fini=__kmp_internal_end_fini -shared
-Wl,-soname,libomp.so -o lib64/libomp.so
projects/openmp/runtime/src/CMakeFiles/omp.dir/kmp_alloc.c.o
projects/openmp/runtime/src/CMakeFiles/omp.dir/kmp_atomic.c.o
projects/openmp/runtime/src/CMakeFiles/omp.dir/kmp_csupport.c.o
projects/openmp/runtime/src/CMakeFiles/omp.dir/kmp_debug.c.o
projects/openmp/runtime/src/CMakeFiles/omp.dir/kmp_itt.c.o
projects/openmp/runtime/src/CMakeFiles/omp.dir/kmp_environment.c.o
projects/openmp/runtime/src/CMakeFiles/omp.dir/kmp_error.c.o
projects/openmp/runtime/src/CMakeFiles/omp.dir/kmp_global.c.o
projects/openmp/runtime/src/CMakeFiles/omp.dir/kmp_i18n.c.o
projects/openmp/runtime/src/CMakeFiles/omp.dir/kmp_io.c.o
projects/openmp/runtime/src/CMakeFiles/omp.dir/kmp_runtime.c.o
projects/openmp/runtime/src/CMakeFiles/omp.dir/kmp_settings.c.o
projects/openmp/runtime/src/CMakeFiles/omp.dir/kmp_str.c.o
projects/openmp/runtime/src/CMakeFiles/omp.dir/kmp_tasking.c.o
projects/openmp/runtime/src/CMakeFiles/omp.dir/kmp_taskq.c.o
projects/openmp/runtime/src/CMakeFiles/omp.dir/kmp_threadprivate.c.o
projects/openmp/runtime/src/CMakeFiles/omp.dir/kmp_utility.c.o
projects/openmp/runtime/src/CMakeFiles/omp.dir/z_Linux_util.c.o
projects/openmp/runtime/src/CMakeFiles/omp.dir/kmp_gsupport.c.o
projects/openmp/runtime/src/CMakeFiles/omp.dir/thirdparty/ittnotify/ittnotify_static.c.o
projects/openmp/runtime/src/CMakeFiles/omp.dir/kmp_ftn_cdecl.c.o
projects/openmp/runtime/src/CMakeFiles/omp.dir/kmp_ftn_extra.c.o
projects/openmp/runtime/src/CMakeFiles/omp.dir/kmp_version.c.o
projects/openmp/runtime/src/CMakeFiles/omp.dir/kmp_barrier.cpp.o
projects/openmp/runtime/src/CMakeFiles/omp.dir/kmp_wait_release.cpp.o
projects/openmp/runtime/src/CMakeFiles/omp.dir/kmp_affinity.cpp.o
projects/openmp/runtime/src/CMakeFiles/omp.dir/kmp_dispatch.cpp.o
projects/openmp/runtime/src/CMakeFiles/omp.dir/kmp_lock.cpp.o
projects/openmp/runtime/src/CMakeFiles/omp.dir/kmp_sched.cpp.o
projects/openmp/runtime/src/CMakeFiles/omp.dir/kmp_taskdeps.cpp.o
projects/openmp/runtime/src/CMakeFiles/omp.dir/kmp_cancel.cpp.o
projects/openmp/runtime/src/CMakeFiles/omp.dir/z_Linux_asm.s.o -lpthread -ldl
-Wl,-rpath,"\$ORIGIN/../lib64" && cd
/home/abuild/rpmbuild/BUILD/llvm/stage1/lib64 && /usr/bin/cmake -E
create_symlink libomp.so libgomp.so && /usr/bin/cmake -E create_symlink
libomp.so libiomp5.so && cd
/home/abuild/rpmbuild/BUILD/llvm/stage1/projects/openmp/runtime/src &&
/usr/bin/cmake -E make_directory
/home/abuild/rpmbuild/BUILD/llvm/projects/openmp/runtime/exports/common/include
&& /usr/bin/cmake -E copy omp.h
/home/abuild/rpmbuild/BUILD/llvm/projects/openmp/runtime/exports/common/include
&& cd /home/abuild/rpmbuild/BUILD/llvm/stage1/projects/openmp/runtime/src &&
/usr/bin/cmake -E make_directory
/home/abuild/rpmbuild/BUILD/llvm/projects/openmp/runtime/exports/lin_32e/lib &&
/usr/bin/cmake -E copy /home/abuild/rpmbuild/BUILD/llvm/stage1/lib64/libomp.so
/home/abuild/rpmbuild/BUILD/llvm/projects/openmp/runtime/exports/lin_32e/lib
LLVM gold plugin: <unknown>:0:0: loop not vectorized: cannot prove it is safe
to reorder memory operations
LLVM ERROR: A @@ version cannot be undefined
clang-3.8: error: linker command failed with exit code 1 (use -v to see
invocation)
Probably related to llvm <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED --- - A @@ version cannot be undefined"
href="show_bug.cgi?id=24023">bug#24023</a></pre>
</div>
</p>
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