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<colgroup>
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<tbody valign="top">
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<tr class="row-odd"><td>layout: page</td>
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<tr class="row-even"><td>title: Values</td>
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<p><a class="reference external" href="llvm.core.Value.html">llvm.core.Value</a> is the base class of all
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values computed by a program that may be used as operands to other
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values. A value has a type associated with it (an object of
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<a class="reference external" href="types.html">llvm.core.Type</a>).</p>
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<p>The class hierarchy is:</p>
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<div class="highlight-python"><pre>Value
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User
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Constant
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ConstantExpr
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ConstantAggregateZero
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ConstantInt
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ConstantFP
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ConstantArray
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ConstantStruct
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ConstantVector
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ConstantPointerNull
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UndefValue
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GlobalValue
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GlobalVariable
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Function
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Instruction
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CallOrInvokeInstruction
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PHINode
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SwitchInstruction
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CompareInstruction
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Argument
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BasicBlock</pre>
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</div>
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<p>The <a class="reference external" href="llvm.core.Value.html">Value</a> class is abstract, it’s not meant to
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be instantiated. <a class="reference external" href="llvm.core.User.html">User</a> is a
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<a class="reference external" href="llvm.core.Value.html">Value</a> that in turn uses (i.e., can refer to)
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other values (for e.g., a constant expression 1+2 refers to two constant
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values 1 and 2).</p>
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<p><a class="reference external" href="llvm.core.Constant.html">Constant</a>-s represent constants that appear
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within code or as initializers of globals. They are constructed using
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static methods of <a class="reference external" href="llvm.core.Constant.html">Constant</a>. Various types
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of constants are represented by various subclasses of
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<a class="reference external" href="llvm.core.Constant.html">Constant</a>. However, most of them are empty
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and do not provide any additional attributes or methods over
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<a class="reference external" href="llvm.core.Constant.html">Constant</a>.</p>
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<p>The <a class="reference external" href="functions.html">Function</a> object represents an instance of a
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function type. Such objects contain
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<a class="reference external" href="llvm.core.Argument.html">Argument</a> objects, which represent the
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actual, local-variable-like arguments of the function (not to be
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confused with the arguments returned by a function <em>type</em> object –
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these represent the <em>type</em> of the arguments).</p>
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<p>The various <a class="reference external" href="llvm.core.Instruction.html">Instruction</a>-s are created by
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the <a class="reference external" href="llvm.core.Builder.html">Builder</a> class. Most instructions are
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represented by <a class="reference external" href="llvm.core.Instruction.html">Instruction</a> itself, but
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there are a few subclasses that represent interesting instructions.</p>
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<p><a class="reference external" href="llvm.core.Value.html">Value</a> objects have a type (read-only), and a
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name (read-write).</p>
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<p><strong>Related Links</strong> <a class="reference external" href="functions.html">functions</a>,
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<a class="reference external" href="comparision.html">comparision</a>,
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<a class="reference external" href="llvm.core.Value.html">llvm.core.Value</a>,
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<a class="reference external" href="llvm.core.User.html">llvm.core.User</a>,
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<a class="reference external" href="llvm.core.Constant.html">llvm.core.Constant</a>,
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<a class="reference external" href="llvm.core.GlobalValue.html">llvm.core.GlobalValue</a>,
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<a class="reference external" href="llvm.core.GlobalVariable.html">llvm.core.GlobalVariable</a>,
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<a class="reference external" href="llvm.core.Argument.html">llvm.core.Argument</a>,
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<a class="reference external" href="llvm.core.Instruction.html">llvm.core.Instruction</a>,
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<a class="reference external" href="llvm.core.Builder.html">llvm.core.Builder</a>,
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<a class="reference external" href="llvm.core.BasicBlock.html">llvm.core.BasicBlock</a></p>
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