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 <a name="MN10300-Options"></a>
 <div class="header">
 <p>
 Next: <a href="Moxie-Options.html#Moxie-Options" accesskey="n" rel="next">Moxie Options</a>, Previous: <a href="MMIX-Options.html#MMIX-Options" accesskey="p" rel="prev">MMIX Options</a>, Up: <a href="Submodel-Options.html#Submodel-Options" accesskey="u" rel="up">Submodel Options</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
 </div>
 <hr>
 <a name="MN10300-Options-1"></a>
 <h4 class="subsection">3.17.29 MN10300 Options</h4>
 <a name="index-MN10300-options"></a>

 <p>These <samp>-m</samp> options are defined for Matsushita MN10300 architectures:
 </p>
 <dl compact="compact">
 <dt><code>-mmult-bug</code></dt>
 <dd><a name="index-mmult_002dbug"></a>
 <p>Generate code to avoid bugs in the multiply instructions for the MN10300
 processors.  This is the default.
 </p>
 </dd>
 <dt><code>-mno-mult-bug</code></dt>
 <dd><a name="index-mno_002dmult_002dbug"></a>
 <p>Do not generate code to avoid bugs in the multiply instructions for the
 MN10300 processors.
 </p>
 </dd>
 <dt><code>-mam33</code></dt>
 <dd><a name="index-mam33"></a>
 <p>Generate code using features specific to the AM33 processor.
 </p>
 </dd>
 <dt><code>-mno-am33</code></dt>
 <dd><a name="index-mno_002dam33"></a>
 <p>Do not generate code using features specific to the AM33 processor.  This
 is the default.
 </p>
 </dd>
 <dt><code>-mam33-2</code></dt>
 <dd><a name="index-mam33_002d2"></a>
 <p>Generate code using features specific to the AM33/2.0 processor.
 </p>
 </dd>
 <dt><code>-mam34</code></dt>
 <dd><a name="index-mam34"></a>
 <p>Generate code using features specific to the AM34 processor.
 </p>
 </dd>
 <dt><code>-mtune=<var>cpu-type</var></code></dt>
 <dd><a name="index-mtune-10"></a>
 <p>Use the timing characteristics of the indicated CPU type when
 scheduling instructions.  This does not change the targeted processor
 type.  The CPU type must be one of &lsquo;<samp>mn10300</samp>&rsquo;, &lsquo;<samp>am33</samp>&rsquo;,
 &lsquo;<samp>am33-2</samp>&rsquo; or &lsquo;<samp>am34</samp>&rsquo;.
 </p>
 </dd>
 <dt><code>-mreturn-pointer-on-d0</code></dt>
 <dd><a name="index-mreturn_002dpointer_002don_002dd0"></a>
 <p>When generating a function that returns a pointer, return the pointer
 in both <code>a0</code> and <code>d0</code>.  Otherwise, the pointer is returned
 only in <code>a0</code>, and attempts to call such functions without a prototype
 result in errors.  Note that this option is on by default; use
 <samp>-mno-return-pointer-on-d0</samp> to disable it.
 </p>
 </dd>
 <dt><code>-mno-crt0</code></dt>
 <dd><a name="index-mno_002dcrt0"></a>
 <p>Do not link in the C run-time initialization object file.
 </p>
 </dd>
 <dt><code>-mrelax</code></dt>
 <dd><a name="index-mrelax-2"></a>
 <p>Indicate to the linker that it should perform a relaxation optimization pass
 to shorten branches, calls and absolute memory addresses.  This option only
 has an effect when used on the command line for the final link step.
 </p>
 <p>This option makes symbolic debugging impossible.
 </p>
 </dd>
 <dt><code>-mliw</code></dt>
 <dd><a name="index-mliw"></a>
 <p>Allow the compiler to generate <em>Long Instruction Word</em>
 instructions if the target is the &lsquo;<samp>AM33</samp>&rsquo; or later.  This is the
 default.  This option defines the preprocessor macro &lsquo;<samp>__LIW__</samp>&rsquo;.
 </p>
 </dd>
 <dt><code>-mnoliw</code></dt>
 <dd><a name="index-mnoliw"></a>
 <p>Do not allow the compiler to generate <em>Long Instruction Word</em>
 instructions.  This option defines the preprocessor macro
 &lsquo;<samp>__NO_LIW__</samp>&rsquo;.
 </p>
 </dd>
 <dt><code>-msetlb</code></dt>
 <dd><a name="index-msetlb"></a>
 <p>Allow the compiler to generate the <em>SETLB</em> and <em>Lcc</em>
 instructions if the target is the &lsquo;<samp>AM33</samp>&rsquo; or later.  This is the
 default.  This option defines the preprocessor macro &lsquo;<samp>__SETLB__</samp>&rsquo;.
 </p>
 </dd>
 <dt><code>-mnosetlb</code></dt>
 <dd><a name="index-mnosetlb"></a>
 <p>Do not allow the compiler to generate <em>SETLB</em> or <em>Lcc</em>
 instructions.  This option defines the preprocessor macro
 &lsquo;<samp>__NO_SETLB__</samp>&rsquo;.
 </p>
 </dd>
 </dl>

 <hr>
 <div class="header">
 <p>
 Next: <a href="Moxie-Options.html#Moxie-Options" accesskey="n" rel="next">Moxie Options</a>, Previous: <a href="MMIX-Options.html#MMIX-Options" accesskey="p" rel="prev">MMIX Options</a>, Up: <a href="Submodel-Options.html#Submodel-Options" accesskey="u" rel="up">Submodel Options</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
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	<a name="MN10300-Options"></a>
	<div class="header">
	<p>
	Next: <a href="Moxie-Options.html#Moxie-Options" accesskey="n" rel="next">Moxie Options</a>, Previous: <a href="MMIX-Options.html#MMIX-Options" accesskey="p" rel="prev">MMIX Options</a>, Up: <a href="Submodel-Options.html#Submodel-Options" accesskey="u" rel="up">Submodel Options</a>   [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
	</div>
	<hr>
	<a name="MN10300-Options-1"></a>
	<h4 class="subsection">3.17.29 MN10300 Options</h4>
	<a name="index-MN10300-options"></a>

	<p>These <samp>-m</samp> options are defined for Matsushita MN10300 architectures:
	</p>
	<dl compact="compact">
	<dt><code>-mmult-bug</code></dt>
	<dd><a name="index-mmult_002dbug"></a>
	<p>Generate code to avoid bugs in the multiply instructions for the MN10300
	processors. This is the default.
	</p>
	</dd>
	<dt><code>-mno-mult-bug</code></dt>
	<dd><a name="index-mno_002dmult_002dbug"></a>
	<p>Do not generate code to avoid bugs in the multiply instructions for the
	MN10300 processors.
	</p>
	</dd>
	<dt><code>-mam33</code></dt>
	<dd><a name="index-mam33"></a>
	<p>Generate code using features specific to the AM33 processor.
	</p>
	</dd>
	<dt><code>-mno-am33</code></dt>
	<dd><a name="index-mno_002dam33"></a>
	<p>Do not generate code using features specific to the AM33 processor. This
	is the default.
	</p>
	</dd>
	<dt><code>-mam33-2</code></dt>
	<dd><a name="index-mam33_002d2"></a>
	<p>Generate code using features specific to the AM33/2.0 processor.
	</p>
	</dd>
	<dt><code>-mam34</code></dt>
	<dd><a name="index-mam34"></a>
	<p>Generate code using features specific to the AM34 processor.
	</p>
	</dd>
	<dt><code>-mtune=<var>cpu-type</var></code></dt>
	<dd><a name="index-mtune-10"></a>
	<p>Use the timing characteristics of the indicated CPU type when
	scheduling instructions. This does not change the targeted processor
	type. The CPU type must be one of ‘<samp>mn10300</samp>’, ‘<samp>am33</samp>’,
	‘<samp>am33-2</samp>’ or ‘<samp>am34</samp>’.
	</p>
	</dd>
	<dt><code>-mreturn-pointer-on-d0</code></dt>
	<dd><a name="index-mreturn_002dpointer_002don_002dd0"></a>
	<p>When generating a function that returns a pointer, return the pointer
	in both <code>a0</code> and <code>d0</code>. Otherwise, the pointer is returned
	only in <code>a0</code>, and attempts to call such functions without a prototype
	result in errors. Note that this option is on by default; use
	<samp>-mno-return-pointer-on-d0</samp> to disable it.
	</p>
	</dd>
	<dt><code>-mno-crt0</code></dt>
	<dd><a name="index-mno_002dcrt0"></a>
	<p>Do not link in the C run-time initialization object file.
	</p>
	</dd>
	<dt><code>-mrelax</code></dt>
	<dd><a name="index-mrelax-2"></a>
	<p>Indicate to the linker that it should perform a relaxation optimization pass
	to shorten branches, calls and absolute memory addresses. This option only
	has an effect when used on the command line for the final link step.
	</p>
	<p>This option makes symbolic debugging impossible.
	</p>
	</dd>
	<dt><code>-mliw</code></dt>
	<dd><a name="index-mliw"></a>
	<p>Allow the compiler to generate <em>Long Instruction Word</em>
	instructions if the target is the ‘<samp>AM33</samp>’ or later. This is the
	default. This option defines the preprocessor macro ‘<samp>__LIW__</samp>’.
	</p>
	</dd>
	<dt><code>-mnoliw</code></dt>
	<dd><a name="index-mnoliw"></a>
	<p>Do not allow the compiler to generate <em>Long Instruction Word</em>
	instructions. This option defines the preprocessor macro
	‘<samp>__NO_LIW__</samp>’.
	</p>
	</dd>
	<dt><code>-msetlb</code></dt>
	<dd><a name="index-msetlb"></a>
	<p>Allow the compiler to generate the <em>SETLB</em> and <em>Lcc</em>
	instructions if the target is the ‘<samp>AM33</samp>’ or later. This is the
	default. This option defines the preprocessor macro ‘<samp>__SETLB__</samp>’.
	</p>
	</dd>
	<dt><code>-mnosetlb</code></dt>
	<dd><a name="index-mnosetlb"></a>
	<p>Do not allow the compiler to generate <em>SETLB</em> or <em>Lcc</em>
	instructions. This option defines the preprocessor macro
	‘<samp>__NO_SETLB__</samp>’.
	</p>
	</dd>
	</dl>

	<hr>
	<div class="header">
	<p>
	Next: <a href="Moxie-Options.html#Moxie-Options" accesskey="n" rel="next">Moxie Options</a>, Previous: <a href="MMIX-Options.html#MMIX-Options" accesskey="p" rel="prev">MMIX Options</a>, Up: <a href="Submodel-Options.html#Submodel-Options" accesskey="u" rel="up">Submodel Options</a>   [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
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