Implement !if, analogous to $(if) in GNU make.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71815 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/TableGenFundamentals.html b/docs/TableGenFundamentals.html
index 36798c8..08838ca 100644
--- a/docs/TableGenFundamentals.html
+++ b/docs/TableGenFundamentals.html
@@ -417,6 +417,8 @@
<dd>The 2nd-N elements of list 'a.'</dd>
<dt><tt>!null(a)</tt></dt>
<dd>An integer {0,1} indicating whether list 'a' is empty.</dd>
+<dt><tt>!if(a,b,c)</tt></dt>
+ <dd>'b' if the result of integer operator 'a' is nonzero, 'c' otherwise.</dd>
</dl>
<p>Note that all of the values have rules specifying how they convert to values