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Document ADT/PackedVector.h in "Programmer's Manual" doc.

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Argyrios Kyrtzidis 2011-06-15 19:56:01 +00:00
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@ -64,6 +64,7 @@ option</a></li>
<li><a href="#dss_deque">&lt;deque&gt;</a></li>
<li><a href="#dss_list">&lt;list&gt;</a></li>
<li><a href="#dss_ilist">llvm/ADT/ilist.h</a></li>
<li><a href="#dss_packedvector">llvm/ADT/PackedVector.h</a></li>
<li><a href="#dss_other">Other Sequential Container Options</a></li>
</ul></li>
<li><a href="#ds_set">Set-Like Containers (std::set, SmallSet, SetVector, etc)</a>
@ -1067,6 +1068,44 @@ Related classes of interest are explained in the following subsections:
</ul>
</div>
<!-- _______________________________________________________________________ -->
<h4>
<a name="dss_packedvector">llvm/ADT/PackedVector.h</a>
</h4>
<div>
<p>
Useful for storing a vector of values using only a few number of bits for each
value. Apart from the standard operations of a vector-like container, it can
also perform an 'or' set operation.
</p>
<p>For example:</p>
<div class="doc_code">
<pre>
enum State {
None = 0x0,
FirstCondition = 0x1,
SecondCondition = 0x2,
Both = 0x3
};
State get() {
PackedVector&lt;State, 2&gt; Vec1;
Vec1.push_back(FirstCondition);
PackedVector&lt;State, 2&gt; Vec2;
Vec2.push_back(SecondCondition);
Vec1 |= Vec2;
return Vec1[0]; // returns 'Both'.
}
</pre>
</div>
</div>
<!-- _______________________________________________________________________ -->
<h4>
<a name="dss_ilist_traits">ilist_traits</a>