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| <title>Using as: D30V-Opts</title> |
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| Next: <a href="D30V_002dSyntax.html#D30V_002dSyntax" accesskey="n" rel="next">D30V-Syntax</a>, Up: <a href="D30V_002dDependent.html#D30V_002dDependent" accesskey="u" rel="up">D30V-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="D30V-Options"></a> |
| <h4 class="subsection">9.10.1 D30V Options</h4> |
| <a name="index-options_002c-D30V"></a> |
| <a name="index-D30V-options"></a> |
| <p>The Mitsubishi D30V version of <code>as</code> has a few machine |
| dependent options. |
| </p> |
| <dl compact="compact"> |
| <dt>‘<samp>-O</samp>’</dt> |
| <dd><p>The D30V 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>-n</samp>’</dt> |
| <dd><p>When this option is used, <code>as</code> will issue a warning every |
| time it adds a nop instruction. |
| </p> |
| </dd> |
| <dt>‘<samp>-N</samp>’</dt> |
| <dd><p>When this option is used, <code>as</code> will issue a warning if it |
| needs to insert a nop after a 32-bit multiply before a load or 16-bit |
| multiply instruction. |
| </p></dd> |
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