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  67. <a name="IA_002d64-Variable-Attributes-1"></a>
  68. <h4 class="subsection">6.34.6 IA-64 Variable Attributes</h4>
  69. <p>The IA-64 back end supports the following variable attribute:
  70. </p>
  71. <dl compact="compact">
  72. <dt><code>model (<var>model-name</var>)</code></dt>
  73. <dd><a name="index-model-variable-attribute_002c-IA_002d64"></a>
  74. <p>On IA-64, use this attribute to set the addressability of an object.
  75. At present, the only supported identifier for <var>model-name</var> is
  76. <code>small</code>, indicating addressability via &ldquo;small&rdquo; (22-bit)
  77. addresses (so that their addresses can be loaded with the <code>addl</code>
  78. instruction). Caveat: such addressing is by definition not position
  79. independent and hence this attribute must not be used for objects
  80. defined by shared libraries.
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