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99 lines
6.1 KiB
HTML
99 lines
6.1 KiB
HTML
4 years ago
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<html lang="en">
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<head>
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<title>GIMPLE API - GNU Compiler Collection (GCC) Internals</title>
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<meta name="description" content="GNU Compiler Collection (GCC) Internals">
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<link title="Top" rel="start" href="index.html#Top">
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<link rel="up" href="Match-and-Simplify.html#Match-and-Simplify" title="Match and Simplify">
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<link rel="next" href="The-Language.html#The-Language" title="The Language">
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<!--
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Copyright (C) 1988-2015 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3 or
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any later version published by the Free Software Foundation; with the
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Invariant Sections being ``Funding Free Software'', the Front-Cover
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(see below). A copy of the license is included in the section entitled
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``GNU Free Documentation License''.
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(a) The FSF's Front-Cover Text is:
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A GNU Manual
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(b) The FSF's Back-Cover Text is:
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You have freedom to copy and modify this GNU Manual, like GNU
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</head>
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<body>
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<div class="node">
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<a name="GIMPLE-API"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="The-Language.html#The-Language">The Language</a>,
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Up: <a rel="up" accesskey="u" href="Match-and-Simplify.html#Match-and-Simplify">Match and Simplify</a>
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<hr>
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</div>
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<h3 class="section">25.1 GIMPLE API</h3>
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<p><a name="index-GIMPLE-API-5112"></a>
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<div class="defun">
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— GIMPLE function: tree <b>gimple_simplify</b> (<var>enum tree_code, tree, tree, gimple_seq *, tree </var>(<var>*</var>)(<var>tree</var>))<var><a name="index-gimple_005fsimplify-5113"></a></var><br>
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— GIMPLE function: tree <b>gimple_simplify</b> (<var>enum tree_code, tree, tree, tree, gimple_seq *, tree </var>(<var>*</var>)(<var>tree</var>))<var><a name="index-gimple_005fsimplify-5114"></a></var><br>
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— GIMPLE function: tree <b>gimple_simplify</b> (<var>enum tree_code, tree, tree, tree, tree, gimple_seq *, tree </var>(<var>*</var>)(<var>tree</var>))<var><a name="index-gimple_005fsimplify-5115"></a></var><br>
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— GIMPLE function: tree <b>gimple_simplify</b> (<var>enum built_in_function, tree, tree, gimple_seq *, tree </var>(<var>*</var>)(<var>tree</var>))<var><a name="index-gimple_005fsimplify-5116"></a></var><br>
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— GIMPLE function: tree <b>gimple_simplify</b> (<var>enum built_in_function, tree, tree, tree, gimple_seq *, tree </var>(<var>*</var>)(<var>tree</var>))<var><a name="index-gimple_005fsimplify-5117"></a></var><br>
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— GIMPLE function: tree <b>gimple_simplify</b> (<var>enum built_in_function, tree, tree, tree, gimple_seq *, tree </var>(<var>*</var>)(<var>tree</var>))<var><a name="index-gimple_005fsimplify-5118"></a></var><br>
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<blockquote><p>The main GIMPLE API entry to the expression simplifications mimicing
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that of the GENERIC fold_{unary,binary,ternary} functions.
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</p></blockquote></div>
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<p>thus providing n-ary overloads for operation or function. The
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additional arguments are a gimple_seq where built statements are
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inserted on (if <code>NULL</code> then simplifications requiring new statements
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are not performed) and a valueization hook that can be used to
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tie simplifications to a SSA lattice.
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<p>In addition to those APIs <code>fold_stmt</code> is overloaded with
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a valueization hook:
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<div class="defun">
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— bool: fold_stmt <b>(</b><var>gimple_stmt_iterator *, tree </var>(<var>*</var>)(<var>tree</var>))<var>;<a name="index-g_t_0028-5119"></a></var><br>
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</div>
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<p>Ontop of these a <code>fold_buildN</code>-like API for GIMPLE is introduced:
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<div class="defun">
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— GIMPLE function: tree <b>gimple_build</b> (<var>gimple_seq *, location_t, enum tree_code, tree, tree, tree </var>(<var>*valueize</var>) (<var>tree</var>)<var> = NULL</var>)<var>;<a name="index-gimple_005fbuild-5120"></a></var><br>
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— GIMPLE function: tree <b>gimple_build</b> (<var>gimple_seq *, location_t, enum tree_code, tree, tree, tree, tree </var>(<var>*valueize</var>) (<var>tree</var>)<var> = NULL</var>)<var>;<a name="index-gimple_005fbuild-5121"></a></var><br>
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— GIMPLE function: tree <b>gimple_build</b> (<var>gimple_seq *, location_t, enum tree_code, tree, tree, tree, tree, tree </var>(<var>*valueize</var>) (<var>tree</var>)<var> = NULL</var>)<var>;<a name="index-gimple_005fbuild-5122"></a></var><br>
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— GIMPLE function: tree <b>gimple_build</b> (<var>gimple_seq *, location_t, enum built_in_function, tree, tree, tree </var>(<var>*valueize</var>) (<var>tree</var>)<var> = NULL</var>)<var>;<a name="index-gimple_005fbuild-5123"></a></var><br>
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— GIMPLE function: tree <b>gimple_build</b> (<var>gimple_seq *, location_t, enum built_in_function, tree, tree, tree, tree </var>(<var>*valueize</var>) (<var>tree</var>)<var> = NULL</var>)<var>;<a name="index-gimple_005fbuild-5124"></a></var><br>
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— GIMPLE function: tree <b>gimple_convert</b> (<var>gimple_seq *, location_t, tree, tree</var>)<var>;<a name="index-gimple_005fconvert-5125"></a></var><br>
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</div>
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<p>which is supposed to replace <code>force_gimple_operand (fold_buildN (...), ...)</code>
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and calls to <code>fold_convert</code>. Overloads without the <code>location_t</code>
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argument exist. Built statements are inserted on the provided sequence
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and simplification is performed using the optional valueization hook.
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</body></html>
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