Patch by Eitan Adler.

Differential Revision:	http://reviews.llvm.org/D8514

llvm-svn: 234939

llvm-svn: 211924

llvm-svn: 203738

This example is not vectorized because LLVM does not prove no-wrapping of
"a[i*7] += ...".

llvm-svn: 203734

llvm-svn: 187713

llvm-svn: 184973

Fix a grammar mistake, and add a line about the two phases that the BB/SLP vectorizers have (top-down and bottom-up). 

llvm-svn: 179566

llvm-svn: 179565

llvm-svn: 179511

Docs: merge the description of the BB and SLP vectorizers and document the -fslp-vectorize-aggressive flag.

llvm-svn: 179510

llvm-svn: 179480

llvm-svn: 179085

llvm-svn: 179060

llvm-svn: 176292

llvm-svn: 175965

llvm-svn: 171873

llvm-svn: 171499

llvm-svn: 171470

llvm-svn: 171449

llvm-svn: 171445

llvm-svn: 171098

llvm-svn: 171094

Hopefully these benchmarks will be updated in the future, so avoid
hardcoding image dimensions.

llvm-svn: 170819

Tell the image to be its natural size.

llvm-svn: 170816

llvm-svn: 170799

llvm-svn: 170792

llvm-svn: 170791

Add links in the intro paragraph.
Add table of contents.

llvm-svn: 170790

llvm-svn: 170776

Hopefully nobody has linked to it yet...

OK'd by Nadav.

llvm-svn: 170768

For whatever reason the usage of '^^^' and '---' adornments were
reversed compared to the "canonical" style of the LLVM docs (which is
currently "the style used in SphinxQuickstartTemplate.rst"). This change
doesn't affect the document structure at all, I'm just doing it for
trivial stylistic consistency (the document content is *much* more
important---thanks Nadav for writing this up!).

Also, trim the adornments to be the same length as the section names.

llvm-svn: 170638

llvm-svn: 170637

llvm-svn: 170618

Building Vectorizers.rst produces a few warnings of the form:

   WARNING: Title underline too short.

Fixed by adding the extra needed dashes under the title.

llvm-svn: 170582

llvm-svn: 170568

llvm-svn: 170567

llvm-svn: 170513

llvm-svn: 170509

llvm-svn: 170504

llvm-svn: 170503