Document llvm/ADT/IntEqClasses.h in ProgrammersManual.html
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128927 91177308-0d34-0410-b5e6-96231b3b80d8
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@@ -86,6 +86,7 @@
<li><a href="#dss_valuemap">"llvm/ADT/ValueMap.h"</a></li>
<li><a href="#dss_intervalmap">"llvm/ADT/IntervalMap.h"</a></li>
<li><a href="#dss_map"><map></a></li>
+ <li><a href="#dss_inteqclasses">"llvm/ADT/IntEqClasses.h"</a></li>
<li><a href="#dss_othermap">Other Map-Like Container Options</a></li>
</ul></li>
<li><a href="#ds_string">String-like containers</a>
@@ -1547,6 +1548,26 @@
<!-- _______________________________________________________________________ -->
<div class="doc_subsubsection">
+ <a name="dss_inteqclasses">"llvm/ADT/IntEqClasses.h"</a>
+</div>
+
+<div class="doc_text">
+
+<p>IntEqClasses provides a compact representation of equivalence classes of
+small integers. Initially, each integer in the range 0..n-1 has its own
+equivalence class. Classes can be joined by passing two class representatives to
+the join(a, b) method. Two integers are in the same class when findLeader()
+returns the same representative.</p>
+
+<p>Once all equivalence classes are formed, the map can be compressed so each
+integer 0..n-1 maps to an equivalence class number in the range 0..m-1, where m
+is the total number of equivalence classes. The map must be uncompressed before
+it can be edited again.</p>
+
+</div>
+
+<!-- _______________________________________________________________________ -->
+<div class="doc_subsubsection">
<a name="dss_othermap">Other Map-Like Container Options</a>
</div>