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  25. <title>GIMPLE API (GNU Compiler Collection (GCC) Internals)</title>

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  70. <a name="GIMPLE-API"></a>

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  74. </div>

  75. <hr>

  76. <a name="GIMPLE-API-1"></a>

  77. <h3 class="section">26.1 GIMPLE API</h3>

  78. <a name="index-GIMPLE-API"></a>

  79. 

  80. <dl>

  81. <dt><a name="index-gimple_005fsimplify"></a>GIMPLE function: <em>tree</em> <strong>gimple_simplify</strong> <em>(enum tree_code, tree, tree, gimple_seq *, tree (*)(tree))</em></dt>

  82. <dt><a name="index-gimple_005fsimplify-1"></a>GIMPLE function: <em>tree</em> <strong>gimple_simplify</strong> <em>(enum tree_code, tree, tree, tree, gimple_seq *, tree (*)(tree))</em></dt>

  83. <dt><a name="index-gimple_005fsimplify-2"></a>GIMPLE function: <em>tree</em> <strong>gimple_simplify</strong> <em>(enum tree_code, tree, tree, tree, tree, gimple_seq *, tree (*)(tree))</em></dt>

  84. <dt><a name="index-gimple_005fsimplify-3"></a>GIMPLE function: <em>tree</em> <strong>gimple_simplify</strong> <em>(enum built_in_function, tree, tree, gimple_seq *, tree (*)(tree))</em></dt>

  85. <dt><a name="index-gimple_005fsimplify-4"></a>GIMPLE function: <em>tree</em> <strong>gimple_simplify</strong> <em>(enum built_in_function, tree, tree, tree, gimple_seq *, tree (*)(tree))</em></dt>

  86. <dt><a name="index-gimple_005fsimplify-5"></a>GIMPLE function: <em>tree</em> <strong>gimple_simplify</strong> <em>(enum built_in_function, tree, tree, tree, tree, gimple_seq *, tree (*)(tree))</em></dt>

  87. <dd><p>The main GIMPLE API entry to the expression simplifications mimicing

  88. that of the GENERIC fold_{unary,binary,ternary} functions.

  89. </p></dd></dl>

  90. 

  91. <p>thus providing n-ary overloads for operation or function.  The

  92. additional arguments are a gimple_seq where built statements are

  93. inserted on (if <code>NULL</code> then simplifications requiring new statements

  94. are not performed) and a valueization hook that can be used to

  95. tie simplifications to a SSA lattice.

  96. </p>

  97. <p>In addition to those APIs <code>fold_stmt</code> is overloaded with

  98. a valueization hook:

  99. </p>

  100. <dl>

  101. <dt><a name="index-_0028gimple_005fstmt_005fiterator"></a>bool: <em>fold_stmt</em> <strong>(gimple_stmt_iterator</strong> <em>*, tree (*)(tree));</em></dt>

  102. </dl>

  103. 

  104. 

  105. <p>Ontop of these a <code>fold_buildN</code>-like API for GIMPLE is introduced:

  106. </p>

  107. <dl>

  108. <dt><a name="index-gimple_005fbuild"></a>GIMPLE function: <em>tree</em> <strong>gimple_build</strong> <em>(gimple_seq *, location_t, enum tree_code, tree, tree, tree (*valueize) (tree) = NULL);</em></dt>

  109. <dt><a name="index-gimple_005fbuild-1"></a>GIMPLE function: <em>tree</em> <strong>gimple_build</strong> <em>(gimple_seq *, location_t, enum tree_code, tree, tree, tree, tree (*valueize) (tree) = NULL);</em></dt>

  110. <dt><a name="index-gimple_005fbuild-2"></a>GIMPLE function: <em>tree</em> <strong>gimple_build</strong> <em>(gimple_seq *, location_t, enum tree_code, tree, tree, tree, tree, tree (*valueize) (tree) = NULL);</em></dt>

  111. <dt><a name="index-gimple_005fbuild-3"></a>GIMPLE function: <em>tree</em> <strong>gimple_build</strong> <em>(gimple_seq *, location_t, enum built_in_function, tree, tree, tree (*valueize) (tree) = NULL);</em></dt>

  112. <dt><a name="index-gimple_005fbuild-4"></a>GIMPLE function: <em>tree</em> <strong>gimple_build</strong> <em>(gimple_seq *, location_t, enum built_in_function, tree, tree, tree, tree (*valueize) (tree) = NULL);</em></dt>

  113. <dt><a name="index-gimple_005fbuild-5"></a>GIMPLE function: <em>tree</em> <strong>gimple_build</strong> <em>(gimple_seq *, location_t, enum built_in_function, tree, tree, tree, tree, tree (*valueize) (tree) = NULL);</em></dt>

  114. <dt><a name="index-gimple_005fconvert"></a>GIMPLE function: <em>tree</em> <strong>gimple_convert</strong> <em>(gimple_seq *, location_t, tree, tree);</em></dt>

  115. </dl>

  116. 

  117. <p>which is supposed to replace <code>force_gimple_operand (fold_buildN (...), ...)</code>

  118. and calls to <code>fold_convert</code>.  Overloads without the <code>location_t</code>

  119. argument exist.  Built statements are inserted on the provided sequence

  120. and simplification is performed using the optional valueization hook.

  121. </p>

  122. 

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