Recommend what I actually test
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23398 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/CFEBuildInstrs.html b/docs/CFEBuildInstrs.html
index 6ed8aa6..c0db7d6 100644
--- a/docs/CFEBuildInstrs.html
+++ b/docs/CFEBuildInstrs.html
@@ -103,7 +103,8 @@
<li><p>Configure and build the LLVM libraries and tools. There are two ways to
do this: either with <i>objdir</i> == <i>srcdir</i> or
<i>objdir</i> != <i>srcdir</i>. It is recommended
-that <i>srcdir</i> not be the same as <i>objdir</i>:</p>
+that <i>srcdir</i> be the same as <i>objdir</i> for your LLVM tree (but note
+that you should always use <i>srcdir</i> != <i>objdir</i> for llvm-gcc):</p>
<ul>
<li>With <i>objdir</i> != <i>srcdir</i>:<pre>
% cd <i>objdir</i>