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<h4 class="subsection">7.2.4 Features for <code>dg-add-options</code></h4>
<p>The supported values of <var>feature</var> for directive <code>dg-add-options</code>
are:
<dl>
<dt><code>arm_neon</code><dd>NEON support. Only ARM targets support this feature, and only then
in certain modes; see the <a href="arm_005fneon_005fok.html#arm_005fneon_005fok">arm_neon_ok effective target keyword</a>.
<br><dt><code>arm_neon_fp16</code><dd>NEON and half-precision floating point support. Only ARM targets
support this feature, and only then in certain modes; see
the <a href="arm_005fneon_005fok.html#arm_005fneon_005fok">arm_neon_fp16_ok effective target keyword</a>.
<br><dt><code>arm_vfp3</code><dd>arm vfp3 floating point support; see
the <a href="arm_005fvfp3_005fok.html#arm_005fvfp3_005fok">arm_vfp3_ok effective target keyword</a>.
<br><dt><code>bind_pic_locally</code><dd>Add the target-specific flags needed to enable functions to bind
locally when using pic/PIC passes in the testsuite.
<br><dt><code>c99_runtime</code><dd>Add the target-specific flags needed to access the C99 runtime.
<br><dt><code>ieee</code><dd>Add the target-specific flags needed to enable full IEEE
compliance mode.
<br><dt><code>mips16_attribute</code><dd><code>mips16</code> function attributes.
Only MIPS targets support this feature, and only then in certain modes.
<br><dt><code>tls</code><dd>Add the target-specific flags needed to use thread-local storage.
</dl>
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