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| Next: <a href="D10V_002dSyntax.html#D10V_002dSyntax" accesskey="n" rel="next">D10V-Syntax</a>, Up: <a href="D10V_002dDependent.html#D10V_002dDependent" accesskey="u" rel="up">D10V-Dependent</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="AS-Index.html#AS-Index" title="Index" rel="index">Index</a>]</p> |
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| <a name="D10V-Options"></a> |
| <h4 class="subsection">9.9.1 D10V Options</h4> |
| <a name="index-options_002c-D10V"></a> |
| <a name="index-D10V-options"></a> |
| <p>The Mitsubishi D10V version of <code>as</code> has a few machine |
| dependent options. |
| </p> |
| <dl compact="compact"> |
| <dt>‘<samp>-O</samp>’</dt> |
| <dd><p>The D10V can often execute two sub-instructions in parallel. When this option |
| is used, <code>as</code> will attempt to optimize its output by detecting when |
| instructions can be executed in parallel. |
| </p></dd> |
| <dt>‘<samp>--nowarnswap</samp>’</dt> |
| <dd><p>To optimize execution performance, <code>as</code> will sometimes swap the |
| order of instructions. Normally this generates a warning. When this option |
| is used, no warning will be generated when instructions are swapped. |
| </p></dd> |
| <dt>‘<samp>--gstabs-packing</samp>’</dt> |
| <dt>‘<samp>--no-gstabs-packing</samp>’</dt> |
| <dd><p><code>as</code> packs adjacent short instructions into a single packed |
| instruction. ‘<samp>--no-gstabs-packing</samp>’ turns instruction packing off if |
| ‘<samp>--gstabs</samp>’ is specified as well; ‘<samp>--gstabs-packing</samp>’ (the |
| default) turns instruction packing on even when ‘<samp>--gstabs</samp>’ is |
| specified. |
| </p></dd> |
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