|fma |trunc|nearbyint|
+-----+-----+---------+
+Performance
+^^^^^^^^^^^
+
+This section shows the the execution time of Clang on a simple benchmark:
+`gcc-loops <http://llvm.org/viewvc/llvm-project/test-suite/trunk/SingleSource/UnitTests/Vectorizer/>`._
+This benchmarks is a collection of loops from the GCC autovectorization
+`page <http://gcc.gnu.org/projects/tree-ssa/vectorization.html>` by Dorit Nuzman._
+
+The chart below compares GCC-4.7, ICC-13, and Clang-SVN at -O3, running on a Sandybridge.
+The Y-axis shows time in msec. Lower is better.
+
+.. image:: gcc-loops.png
+
The Basic Block Vectorizer
==========================