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| author | Nadav Rotem <nrotem@apple.com> | 2012-12-19 08:28:24 +0000 |
|---|---|---|
| committer | Nadav Rotem <nrotem@apple.com> | 2012-12-19 08:28:24 +0000 |
| commit | 67a6ec87be54f84e8c8ea6c49583e9303fecef2c (patch) | |
| tree | 613bfd0cab614a947d24e78c21f5d5a98a7843f6 /docs/Vectorizers.rst | |
| parent | 4b977312c7a9c078211de83771b40a1561deb047 (diff) | |
| download | external_llvm-67a6ec87be54f84e8c8ea6c49583e9303fecef2c.zip external_llvm-67a6ec87be54f84e8c8ea6c49583e9303fecef2c.tar.gz external_llvm-67a6ec87be54f84e8c8ea6c49583e9303fecef2c.tar.bz2 | |
DOC: add a benchmarks that compares us to gcc and icc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170509 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'docs/Vectorizers.rst')
| -rw-r--r-- | docs/Vectorizers.rst | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/docs/Vectorizers.rst b/docs/Vectorizers.rst index 291c76d..b60e46d 100644 --- a/docs/Vectorizers.rst +++ b/docs/Vectorizers.rst @@ -188,6 +188,19 @@ See the table below for a list of these functions. |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 ========================== |