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<title>Using the GNU Compiler Collection (GCC): M32C Pragmas</title>

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<a name="M32C-Pragmas-1"></a>
<h4 class="subsection">6.60.2 M32C Pragmas</h4>

<dl compact="compact">
<dt><code>GCC memregs <var>number</var></code></dt>
<dd><a name="index-pragma_002c-memregs"></a>
<p>Overrides the command-line option <code>-memregs=</code> for the current
file.  Use with care!  This pragma must be before any function in the
file, and mixing different memregs values in different objects may
make them incompatible.  This pragma is useful when a
performance-critical function uses a memreg for temporary values,
as it may allow you to reduce the number of memregs used.
</p>
</dd>
<dt><code>ADDRESS <var>name</var> <var>address</var></code></dt>
<dd><a name="index-pragma_002c-address"></a>
<p>For any declared symbols matching <var>name</var>, this does three things
to that symbol: it forces the symbol to be located at the given
address (a number), it forces the symbol to be volatile, and it
changes the symbol&rsquo;s scope to be static.  This pragma exists for
compatibility with other compilers, but note that the common
<code>1234H</code> numeric syntax is not supported (use <code>0x1234</code>
instead).  Example:
</p>
<div class="smallexample">
<pre class="smallexample">#pragma ADDRESS port3 0x103
char port3;
</pre></div>

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