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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - error in backend: Cannot select: intrinsic %llvm.coro.size when using clang coroutines support"
href="https://bugs.llvm.org/show_bug.cgi?id=33176">33176</a>
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<th>Summary</th>
<td>error in backend: Cannot select: intrinsic %llvm.coro.size when using clang coroutines support
</td>
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<th>Product</th>
<td>libraries
</td>
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<th>Version</th>
<td>trunk
</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
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<th>Component</th>
<td>Common Code Generator Code
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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</tr>
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<th>Reporter</th>
<td>richard-llvm@metafoo.co.uk
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</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=18514" name="attach_18514" title="complete testcase for coroutines isel failure">attachment 18514</a> <a href="attachment.cgi?id=18514&action=edit" title="complete testcase for coroutines isel failure">[details]</a></span>
complete testcase for coroutines isel failure
Testcase:
#include <coroutines>
using namespace std::experimental;
using namespace std;
template<typename T> struct generator {
struct promise_type {
suspend_always yield_value(T t);
suspend_never initial_suspend();
suspend_always final_suspend();
void return_void();
generator get_return_object();
void unhandled_exception();
};
};
template<typename T, typename... U>
struct coroutine_traits<generator<T>, U...> {
using promise_type = typename generator<T>::promise_type;
};
generator<int> iota() { co_yield 0; }
int main() { iota(); }
(Full testcase attached)
Results in:
fatal error: error in backend: Cannot select: intrinsic %llvm.coro.size</pre>
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