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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 | 15bdbbe30909025953c338e77c0b4156115e755e (patch) | |
| tree | 13a682daec6784c1bc9b259a0cacbc436d1f7e7d /llvm/docs/Vectorizers.rst | |
| parent | b6219c060bc97b3e02780e1c4acb658fde09427b (diff) | |
| download | bcm5719-llvm-15bdbbe30909025953c338e77c0b4156115e755e.tar.gz bcm5719-llvm-15bdbbe30909025953c338e77c0b4156115e755e.zip | |
DOC: add a benchmarks that compares us to gcc and icc.
llvm-svn: 170509
Diffstat (limited to 'llvm/docs/Vectorizers.rst')
| -rw-r--r-- | llvm/docs/Vectorizers.rst | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/llvm/docs/Vectorizers.rst b/llvm/docs/Vectorizers.rst index 291c76dd265..b60e46dbca0 100644 --- a/llvm/docs/Vectorizers.rst +++ b/llvm/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 ========================== |
