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-rw-r--r--docs/LangRef.html4
1 files changed, 4 insertions, 0 deletions
diff --git a/docs/LangRef.html b/docs/LangRef.html
index 36eae718e3..3f16e386c2 100644
--- a/docs/LangRef.html
+++ b/docs/LangRef.html
@@ -2061,6 +2061,10 @@ the two digit hex code. For example: "<tt>!"test\00"</tt>".
exclamation point). For example: "<tt>!{ { } !"test\00", i32 10}</tt>".
</p>
+<p>A metadata node will attempt to track changes to the values it holds. In
+the event that a value is deleted, it will be replaced with a typeless
+"<tt>null</tt>", such as "<tt>{ } !{null, i32 0}</tt>".</p>
+
<p>Optimizations may rely on metadata to provide additional information about
the program that isn't available in the instructions, or that isn't easily
computable. Similarly, the code generator may expect a certain metadata format