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44 Commits

Author SHA1 Message Date
Vedant Kumar
b6d6831826 docs: Remove reference to a deprecated flag 
llvm-svn: 323254
 2018-01-23 20:22:37 +00:00
Eli Friedman
06e7a73dd8 [docs] Update name of vectorization interleave flag. 
llvm-svn: 304370
 2017-05-31 23:02:55 +00:00
Ayal Zaks
1bc5629c63 [Docs] Add VectorizationPlan to docs/Proposals. 
Following the request made in https://reviews.llvm.org/D32871, the
general documentation of the Vectorization Plan is hereby placed
under docs/Proposals.

llvm-svn: 304161
 2017-05-29 15:36:23 +00:00
Ayal Zaks
08b77c4665 [LV] Report multiple reasons for not vectorizing under allowExtraAnalysis 
The default behavior of -Rpass-analysis=loop-vectorizer is to report only the
first reason encountered for not vectorizing, if one is found, at which time the
vectorizer aborts its handling of the loop. This patch allows multiple reasons
for not vectorizing to be identified and reported, at the potential expense of
additional compile-time, under allowExtraAnalysis which can currently be turned
on by Clang's -fsave-optimization-record and opt's -pass-remarks-missed.

Removed from LoopVectorizationLegality::canVectorize() the redundant checking
and reporting if we CantComputeNumberOfIterations, as LAI::canAnalyzeLoop() also
does that. This redundancy is caught by a lit test once multiple reasons are
reported.

Patch initially developed by Dror Barak.

Differential Revision: https://reviews.llvm.org/D33396

llvm-svn: 303613
 2017-05-23 07:08:02 +00:00
Ed Maste
b8c5d92511 Correct 'teh' and other typos / repeated words. 
Patch by Eitan Adler.

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

llvm-svn: 234939
 2015-04-14 20:52:58 +00:00
Tyler Nowicki
8327f835c8 Vectorization documentation for loop hint pragmas and Rpass diagnostics. 
llvm-svn: 211924
 2014-06-27 18:30:08 +00:00
Arnold Schwaighofer
34ba878c90 Fix whitespace in vectorizer example 
llvm-svn: 203738
 2014-03-12 23:58:07 +00:00
Arnold Schwaighofer
3c1232f637 Fix vectorizer docs. 
This example is not vectorized because LLVM does not prove no-wrapping of
"a[i*7] += ...".

llvm-svn: 203734
 2014-03-12 23:23:44 +00:00
Nadav Rotem
3cf6d1b3c9 Update the docs. 
llvm-svn: 187713
 2013-08-05 04:27:34 +00:00
Nadav Rotem
13610ba018 The SLP Vectorizer works across basic blocks. Update the docs. 
llvm-svn: 184973
 2013-06-26 17:59:35 +00:00
Nadav Rotem
cd793c55bf 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
 2013-04-15 22:21:25 +00:00
Nadav Rotem
7d5c664728 Fix the internal link. 
llvm-svn: 179565
 2013-04-15 22:11:07 +00:00
Nadav Rotem
0e89041496 Document our desire to enable the loop vectorizer on -Os in future releases. 
llvm-svn: 179511
 2013-04-15 05:56:55 +00:00
Nadav Rotem
9ab9988081 Docs: merge the description of the BB and SLP vectorizers and document the -fslp-vectorize-aggressive flag. 
llvm-svn: 179510
 2013-04-15 05:53:23 +00:00
Nadav Rotem
3260e4f4f7 Document the SLP infrastructure. 
llvm-svn: 179480
 2013-04-14 07:42:25 +00:00
Nadav Rotem
c48b9d78aa Remove the confusing sentence. 
llvm-svn: 179085
 2013-04-09 04:48:40 +00:00
Nadav Rotem
cedc2f5e24 Update the docs about the fact that the loop vectorizer is enabled by default for -O3. 
llvm-svn: 179060
 2013-04-08 21:34:49 +00:00
Benjamin Kramer
ba046585c3 Brag about function call vectorization in the docs. 
llvm-svn: 176292
 2013-02-28 19:33:46 +00:00
Renato Golin
87e7870bee Add global structure vectorization to docs 
llvm-svn: 175965
 2013-02-23 13:25:41 +00:00
Nadav Rotem
96123a7199 Docs: mention that we support float reductions when -ffast-math is used. 
llvm-svn: 171873
 2013-01-08 17:46:30 +00:00
Nadav Rotem
d5d3609029 Add linpack-pc bench 
llvm-svn: 171499
 2013-01-04 19:00:42 +00:00
Nadav Rotem
483cacd34a Update the docs about the new unroll features. 
llvm-svn: 171470
 2013-01-04 17:49:45 +00:00
Nadav Rotem
324a3ca6c4 Reformat the rst text. 
llvm-svn: 171449
 2013-01-03 01:56:33 +00:00
Nadav Rotem
cbe45babb2 LoopVectorizer: Document the unrolling feature. 
llvm-svn: 171445
 2013-01-03 01:47:02 +00:00
Nadav Rotem
034faa077d revert an accidental commit. 
llvm-svn: 171098
 2012-12-26 06:16:03 +00:00
Nadav Rotem
fec894619f Doc: add fmuladd to the list of vectorizeable functions. Thanks hfinkel. 
llvm-svn: 171094
 2012-12-26 06:03:35 +00:00
Sean Silva
3101c69a79 docs: More robust image scaling fix. 
Hopefully these benchmarks will be updated in the future, so avoid
hardcoding image dimensions.

llvm-svn: 170819
 2012-12-21 00:28:42 +00:00
Sean Silva
deea25e239 docs: Prevent image scaling. 
Tell the image to be its natural size.

llvm-svn: 170816
 2012-12-21 00:20:25 +00:00
Sean Silva
4fd7ae0dec docs: Cleanup trailing whitespace. 
llvm-svn: 170799
 2012-12-20 22:59:36 +00:00
Sean Silva
e13a7de1ee docs: actually indent these consistently 
llvm-svn: 170792
 2012-12-20 22:49:13 +00:00
Sean Silva
24e57a087b docs: Indent consistently in code examples. 
llvm-svn: 170791
 2012-12-20 22:47:41 +00:00
Sean Silva
220e0c5253 docs: Improve navigation for Vectorizers.rst 
Add links in the intro paragraph.
Add table of contents.

llvm-svn: 170790
 2012-12-20 22:42:20 +00:00
Sean Silva
04f52865e6 docs: bring back link for reddit. 
llvm-svn: 170776
 2012-12-20 22:24:37 +00:00
Sean Silva
fbf8cf920e docs: Make document name congruent with title. 
Hopefully nobody has linked to it yet...

OK'd by Nadav.

llvm-svn: 170768
 2012-12-20 21:50:41 +00:00
Sean Silva
efd5772157 docs: Clean up adornments. 
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
 2012-12-20 02:40:45 +00:00
Sean Silva
660871b2d4 docs: ASCII-fy 
llvm-svn: 170637
 2012-12-20 02:23:25 +00:00
Nadav Rotem
b753ba0493 Doc: update the chart. 
llvm-svn: 170618
 2012-12-20 00:03:36 +00:00
Meador Inge
cdf8b19f0b docs: Fix title underline warnings 
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
 2012-12-19 20:16:40 +00:00
Nadav Rotem
2d9db52f43 doc: add subsections. 
llvm-svn: 170568
 2012-12-19 18:04:44 +00:00
Nadav Rotem
06dc587cd6 DOC: document the use of O2, O3 and Os with -fvectorize. 
llvm-svn: 170567
 2012-12-19 18:02:36 +00:00
Nadav Rotem
833bf77529 DOC: fix the url format. 
llvm-svn: 170513
 2012-12-19 08:43:05 +00:00
Nadav Rotem
10ed93e100 DOC: add a benchmarks that compares us to gcc and icc. 
llvm-svn: 170509
 2012-12-19 08:28:24 +00:00
Nadav Rotem
19ffa12ce1 docs: fix typos. 
llvm-svn: 170504
 2012-12-19 07:36:35 +00:00
Nadav Rotem
e42a1b9f42 DOC: Add a webpage that describes the loop and bb vectorizers. 
llvm-svn: 170503
 2012-12-19 07:22:24 +00:00