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176 lines
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176 lines
8.6 KiB
HTML
4 years ago
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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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Texts being (a) (see below), and with the Back-Cover Texts being (b)
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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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<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>GIMPLE_COND (GNU Compiler Collection (GCC) Internals)</title>
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<meta name="description" content="GIMPLE_COND (GNU Compiler Collection (GCC) Internals)">
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<meta name="keywords" content="GIMPLE_COND (GNU Compiler Collection (GCC) Internals)">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="Option-Index.html#Option-Index" rel="index" title="Option Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Tuple-specific-accessors.html#Tuple-specific-accessors" rel="up" title="Tuple specific accessors">
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<link href="GIMPLE_005fDEBUG.html#GIMPLE_005fDEBUG" rel="next" title="GIMPLE_DEBUG">
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<link href="GIMPLE_005fCATCH.html#GIMPLE_005fCATCH" rel="prev" title="GIMPLE_CATCH">
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</head>
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<body lang="en">
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<a name="GIMPLE_005fCOND"></a>
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<div class="header">
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<p>
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Next: <a href="GIMPLE_005fDEBUG.html#GIMPLE_005fDEBUG" accesskey="n" rel="next"><code>GIMPLE_DEBUG</code></a>, Previous: <a href="GIMPLE_005fCATCH.html#GIMPLE_005fCATCH" accesskey="p" rel="prev"><code>GIMPLE_CATCH</code></a>, Up: <a href="Tuple-specific-accessors.html#Tuple-specific-accessors" accesskey="u" rel="up">Tuple specific accessors</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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</div>
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<hr>
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<a name="GIMPLE_005fCOND-1"></a>
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<h4 class="subsection">12.8.6 <code>GIMPLE_COND</code></h4>
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<a name="index-GIMPLE_005fCOND"></a>
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<dl>
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<dt><a name="index-_002agimple_005fbuild_005fcond"></a>GIMPLE function: <em>gcond</em> <strong>*gimple_build_cond</strong> <em>( enum tree_code pred_code, tree lhs, tree rhs, tree t_label, tree f_label)</em></dt>
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<dd><p>Build a <code>GIMPLE_COND</code> statement. <code>A</code> <code>GIMPLE_COND</code> statement compares
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<code>LHS</code> and <code>RHS</code> and if the condition in <code>PRED_CODE</code> is true, jump to
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the label in <code>t_label</code>, otherwise jump to the label in <code>f_label</code>.
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<code>PRED_CODE</code> are relational operator tree codes like <code>EQ_EXPR</code>,
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<code>LT_EXPR</code>, <code>LE_EXPR</code>, <code>NE_EXPR</code>, etc.
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</p></dd></dl>
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<dl>
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<dt><a name="index-_002agimple_005fbuild_005fcond_005ffrom_005ftree"></a>GIMPLE function: <em>gcond</em> <strong>*gimple_build_cond_from_tree</strong> <em>(tree cond, tree t_label, tree f_label)</em></dt>
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<dd><p>Build a <code>GIMPLE_COND</code> statement from the conditional expression
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tree <code>COND</code>. <code>T_LABEL</code> and <code>F_LABEL</code> are as in <code>gimple_build_cond</code>.
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</p></dd></dl>
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<dl>
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<dt><a name="index-gimple_005fcond_005fcode"></a>GIMPLE function: <em>enum tree_code</em> <strong>gimple_cond_code</strong> <em>(gimple g)</em></dt>
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<dd><p>Return the code of the predicate computed by conditional
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statement <code>G</code>.
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</p></dd></dl>
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<dl>
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<dt><a name="index-gimple_005fcond_005fset_005fcode"></a>GIMPLE function: <em>void</em> <strong>gimple_cond_set_code</strong> <em>(gcond *g, enum tree_code code)</em></dt>
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<dd><p>Set <code>CODE</code> to be the predicate code for the conditional statement
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<code>G</code>.
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</p></dd></dl>
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<dl>
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<dt><a name="index-gimple_005fcond_005flhs"></a>GIMPLE function: <em>tree</em> <strong>gimple_cond_lhs</strong> <em>(gimple g)</em></dt>
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<dd><p>Return the <code>LHS</code> of the predicate computed by conditional statement
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<code>G</code>.
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</p></dd></dl>
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<dl>
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<dt><a name="index-gimple_005fcond_005fset_005flhs"></a>GIMPLE function: <em>void</em> <strong>gimple_cond_set_lhs</strong> <em>(gcond *g, tree lhs)</em></dt>
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<dd><p>Set <code>LHS</code> to be the <code>LHS</code> operand of the predicate computed by
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conditional statement <code>G</code>.
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</p></dd></dl>
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<dl>
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<dt><a name="index-gimple_005fcond_005frhs"></a>GIMPLE function: <em>tree</em> <strong>gimple_cond_rhs</strong> <em>(gimple g)</em></dt>
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<dd><p>Return the <code>RHS</code> operand of the predicate computed by conditional
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<code>G</code>.
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</p></dd></dl>
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<dl>
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<dt><a name="index-gimple_005fcond_005fset_005frhs"></a>GIMPLE function: <em>void</em> <strong>gimple_cond_set_rhs</strong> <em>(gcond *g, tree rhs)</em></dt>
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<dd><p>Set <code>RHS</code> to be the <code>RHS</code> operand of the predicate computed by
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conditional statement <code>G</code>.
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</p></dd></dl>
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<dl>
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<dt><a name="index-gimple_005fcond_005ftrue_005flabel"></a>GIMPLE function: <em>tree</em> <strong>gimple_cond_true_label</strong> <em>(const gcond *g)</em></dt>
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<dd><p>Return the label used by conditional statement <code>G</code> when its
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predicate evaluates to true.
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</p></dd></dl>
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<dl>
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<dt><a name="index-gimple_005fcond_005fset_005ftrue_005flabel"></a>GIMPLE function: <em>void</em> <strong>gimple_cond_set_true_label</strong> <em>(gcond *g, tree label)</em></dt>
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<dd><p>Set <code>LABEL</code> to be the label used by conditional statement <code>G</code> when
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its predicate evaluates to true.
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</p></dd></dl>
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<dl>
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<dt><a name="index-gimple_005fcond_005fset_005ffalse_005flabel"></a>GIMPLE function: <em>void</em> <strong>gimple_cond_set_false_label</strong> <em>(gcond *g, tree label)</em></dt>
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<dd><p>Set <code>LABEL</code> to be the label used by conditional statement <code>G</code> when
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its predicate evaluates to false.
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</p></dd></dl>
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<dl>
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<dt><a name="index-gimple_005fcond_005ffalse_005flabel"></a>GIMPLE function: <em>tree</em> <strong>gimple_cond_false_label</strong> <em>(const gcond *g)</em></dt>
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<dd><p>Return the label used by conditional statement <code>G</code> when its
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predicate evaluates to false.
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</p></dd></dl>
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<dl>
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<dt><a name="index-gimple_005fcond_005fmake_005ffalse"></a>GIMPLE function: <em>void</em> <strong>gimple_cond_make_false</strong> <em>(gcond *g)</em></dt>
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<dd><p>Set the conditional <code>COND_STMT</code> to be of the form ’if (1 == 0)’.
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</p></dd></dl>
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<dl>
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<dt><a name="index-gimple_005fcond_005fmake_005ftrue"></a>GIMPLE function: <em>void</em> <strong>gimple_cond_make_true</strong> <em>(gcond *g)</em></dt>
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<dd><p>Set the conditional <code>COND_STMT</code> to be of the form ’if (1 == 1)’.
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</p></dd></dl>
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<hr>
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<div class="header">
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<p>
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Next: <a href="GIMPLE_005fDEBUG.html#GIMPLE_005fDEBUG" accesskey="n" rel="next"><code>GIMPLE_DEBUG</code></a>, Previous: <a href="GIMPLE_005fCATCH.html#GIMPLE_005fCATCH" accesskey="p" rel="prev"><code>GIMPLE_CATCH</code></a>, Up: <a href="Tuple-specific-accessors.html#Tuple-specific-accessors" accesskey="u" rel="up">Tuple specific accessors</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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</div>
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</body>
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