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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 - clang-cl crashes when using _setbv without /arch:AVX"
href="https://bugs.llvm.org/show_bug.cgi?id=51706">51706</a>
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<th>Summary</th>
<td>clang-cl crashes when using _setbv without /arch:AVX
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Frontend
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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</tr>
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<th>Reporter</th>
<td>nicolasweber@gmx.de
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org, neeilans@live.com, richard-llvm@metafoo.co.uk
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<p>
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<pre>thakis@thakis:~/src/chrome/src$ cat foo.cc
#include <intrin.h>
void f() {
unsigned int tmp_Ui;
unsigned long tmp_ULLi;
_xsetbv(tmp_Ui, tmp_ULLi);
}
thakis@thakis:~/src/chrome/src$
third_party/llvm-build/Release+Asserts/bin/clang-cl /c foo.cc /winsysroot
third_party/depot_tools/win_toolchain/vs_files/3bda71a11e/
fatal error: error in backend: Cannot select: intrinsic %llvm.x86.xsetbv
Works fine with /arch:AVX. We should have some friendlier diag here :)</pre>
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