Add reassociation, minor cleanups.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21973 91177308-0d34-0410-b5e6-96231b3b80d8
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+ <td><a href="#Reassociation">Reassociation</a></td>
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@@ -136,6 +125,7 @@
<dd>Load Value Numbering</dd>
</dl>
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<!-- _______________________________________________________________________ -->
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@@ -144,6 +134,18 @@
<dd>Partial Redundancy Elimination</dd>
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+<!-- _______________________________________________________________________ -->
+<div class="doc_subsection"><a name="R">- R -</a></div>
+<div class="doc_text">
+ <dl>
+ <dt><a name="Reassociation"><b>Reassociation</b></a></dt> <dd>Rearranging
+ associative expressions to promote better redundancy elimination and other
+ optimization. For example, changing (A+B-A) into (B+A-A), permitting it to
+ be optimized into (B+0) then (B).
+ </dl>
+</div>
+
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