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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Crash with __builtin_signbitl for aarch64"
href="https://bugs.llvm.org/show_bug.cgi?id=44515">44515</a>
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<th>Summary</th>
<td>Crash with __builtin_signbitl for aarch64
</td>
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<th>Product</th>
<td>libraries
</td>
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<th>Version</th>
<td>9.0
</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>release blocker
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Backend: AArch64
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>qiuc12@gmail.com
</td>
</tr>
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<th>CC</th>
<td>arnaud.degrandmaison@arm.com, llvm-bugs@lists.llvm.org, peter.smith@linaro.org, Ties.Stuij@arm.com
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<p>
<div>
<pre>Compiling following code fails with aarch64:
long double d();
bool foo() {
return __builtin_signbitl(d());
}
=====
clang-9 builtin_signbit.cpp --target=aarch64-gnu-linux
Fails with:
llvm/lib/CodeGen/GlobalISel/MachineIRBuilder.cpp:907: void
llvm::MachineIRBuilder::validateSelectOp(const llvm::LLT&, const llvm::LLT&,
const llvm::LLT&, const llvm::LLT&): Assertion `(ResTy == Op0Ty && ResTy ==
Op1Ty) && "type mismatch"' failed.
clang 9.0.1</pre>
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