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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Clang allows unofficial ACLE intrinsics"
href="https://bugs.llvm.org/show_bug.cgi?id=47471">47471</a>
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<th>Summary</th>
<td>Clang allows unofficial ACLE intrinsics
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<th>Product</th>
<td>clang
</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
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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>-New Bugs
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>pablo.barrio@arm.com
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<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org, neeilans@live.com, richard-llvm@metafoo.co.uk
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<p>
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<pre>Clang supports the following C/C++ intrinsics:
vceqz_p16
vceqzq_p16
vmlaq_n_f64
vmlsq_n_f64
which are not part of the ACLE. These intrinsics are currently exposed through
arm_neon.h, thus allowing developers to write code that will not be compatible
with other toolchains (e.g. GNU).
For example a test.c as follows:
#include <arm_neon.h>
poly16x4_t neon_test(poly16x4_t a) { return vceqz_p16(a); }
Compiled with:
clang --target=aarch64-arm-none-eabi -c ~/test.c -o /dev/null
passes, but it should throw an error.</pre>
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