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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - clang crashes compiling "volatile long double resld = __builtin_canonicalizel(LD)""
href="https://bugs.llvm.org/show_bug.cgi?id=34862">34862</a>
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<th>Summary</th>
<td>clang crashes compiling "volatile long double resld = __builtin_canonicalizel(LD)"
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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>All
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>Backend: X86
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>ahatanak@gmail.com
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
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<pre>clang crashes when compiling the following code:
$ cat canon-crash.c
void test_float_builtin_ops(long double LD) {
volatile long double resld = __builtin_canonicalizel(LD);
}
$ clang canon-crash.c -Os -o - -S
fatal error: error in backend: Cannot select: t7: f80 = fcanonicalize t3
t3: f80,ch = load<LD10[FixedStack-1](align=16)> t0, FrameIndex:i64<-1>,
undef:i64
t1: i64 = FrameIndex<-1>
t2: i64 = undef
In function: test_float_builtin_ops</pre>
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