[PATCH] D33664: [Lexicon] Add GVN

[Brian Gesiak via Phabricator via llvm-commits]

modocache updated this revision to Diff 102287.
modocache added a comment.

Sure! I updated this to use the description from NewGVN. (I'm updating Phabticator since that's my normal workflow.)


https://reviews.llvm.org/D33664

Files:
  docs/Lexicon.rst


Index: docs/Lexicon.rst
===================================================================
--- docs/Lexicon.rst
+++ docs/Lexicon.rst
@@ -109,6 +109,13 @@
     Garbage Collection. The practice of using reachability analysis instead of
     explicit memory management to reclaim unused memory.
 
+**GVN**
+    Global Value Numbering. GVN is a pass that partitions values computed by a
+    function into congruence classes. Values ending up in the same congruence
+    class are guaranteed to be the same for every execution of the program.
+    In that respect, congruency is a compile-time approximation of equivalence
+    of values at runtime.
+
 H
 -
 


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