Document ENABLE_ASSERTIONS=1

llvm-svn: 26915
diff --git a/llvm/docs/GettingStarted.html b/llvm/docs/GettingStarted.html
index a7c1819..d0a48e0 100644
--- a/llvm/docs/GettingStarted.html
+++ b/llvm/docs/GettingStarted.html
@@ -955,6 +955,11 @@
   Perform a Release (Optimized) build.
   <p>
 
+  <dt><tt>gmake ENABLE_OPTIMIZED=1 ENABLE_ASSERTIONS=1</tt>
+  <dd>
+  Perform a Release (Optimized) build with assertions enabled.
+  <p>
+
   <dt><tt>gmake ENABLE_PROFILING=1</tt>
   <dd>
   Perform a Profiling build.