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Diffstat (limited to 'docs/ProgrammersManual.html')
| -rw-r--r-- | docs/ProgrammersManual.html | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/docs/ProgrammersManual.html b/docs/ProgrammersManual.html index 3bec325d6c..49a76ee414 100644 --- a/docs/ProgrammersManual.html +++ b/docs/ProgrammersManual.html @@ -64,6 +64,7 @@ option</a></li> <li><a href="#dss_deque"><deque></a></li> <li><a href="#dss_list"><list></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> @@ -1069,6 +1070,44 @@ Related classes of interest are explained in the following subsections: <!-- _______________________________________________________________________ --> <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<State, 2> Vec1; + Vec1.push_back(FirstCondition); + + PackedVector<State, 2> Vec2; + Vec2.push_back(SecondCondition); + + Vec1 |= Vec2; + return Vec1[0]; // returns 'Both'. +} +</pre> +</div> + +</div> + +<!-- _______________________________________________________________________ --> +<h4> <a name="dss_ilist_traits">ilist_traits</a> </h4> |