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Silviu Baranga 62976245a8 [LV] Identify more induction PHIs by coercing expressions to AddRecExprs 
Summary:
Some PHIs can have expressions that are not AddRecExprs due to the presence
of sext/zext instructions. In order to prevent the Loop Vectorizer from
bailing out when encountering these PHIs, we now coerce the SCEV
expressions to AddRecExprs using SCEV predicates (when possible).

We only do this when the alternative would be to not vectorize.

Reviewers: mzolotukhin, anemet

Subscribers: mssimpso, sanjoy, mzolotukhin, llvm-commits

Differential Revision: http://reviews.llvm.org/D17153

llvm-svn: 268633
2016-05-05 15:20:39 +00:00
bindings Remove every uses of getGlobalContext() in LLVM (but the C API) 2016-04-14 21:59:01 +00:00
cmake Unify XDEBUG and EXPENSIVE_CHECKS (into the latter), and add an option to the cmake build to enable them. 2016-04-29 15:22:48 +00:00
docs Remove bit-rotten CppBackend. 2016-05-05 14:35:40 +00:00
examples Remove every uses of getGlobalContext() in LLVM (but the C API) 2016-04-14 21:59:01 +00:00
include [LV] Identify more induction PHIs by coercing expressions to AddRecExprs 2016-05-05 15:20:39 +00:00
lib [LV] Identify more induction PHIs by coercing expressions to AddRecExprs 2016-05-05 15:20:39 +00:00
projects Remove autoconf support 2016-01-26 21:29:08 +00:00
resources In MSVC builds embed a VERSIONINFO resource in our exe and DLL files. 2015-06-12 15:58:29 +00:00
test [LV] Identify more induction PHIs by coercing expressions to AddRecExprs 2016-05-05 15:20:39 +00:00
tools [ThinLTO] Emit individual index files for distributed backends 2016-05-05 13:44:56 +00:00
unittests [Coverage] Combine counts of expansion regions if there are no code regions for the same area. 2016-05-05 09:39:45 +00:00
utils Remove bit-rotten CppBackend. 2016-05-05 14:35:40 +00:00
.arcconfig Updated phabricator server. 2014-04-07 03:57:04 +00:00
.clang-format Test commit. 2014-03-02 13:08:46 +00:00
.clang-tidy Don't use misc-unused-parameters check on LLVM. 2016-04-13 08:58:52 +00:00
.gitignore Minor updates to gitignore so that symlinks are ignored in the projects dir. 2015-07-07 20:24:58 +00:00
CMakeLists.txt Remove bit-rotten CppBackend. 2016-05-05 14:35:40 +00:00
CODE_OWNERS.TXT Update owners to reflect recent changes 2016-04-01 20:40:49 +00:00
configure Remove autoconf support 2016-01-26 21:29:08 +00:00
CREDITS.TXT Fix typos 2016-05-02 19:06:51 +00:00
LICENSE.TXT Update copyright year to 2016. 2016-03-30 22:41:06 +00:00
llvm.spec.in [Sparc] Implement i64 load/store support for 32-bit sparc. 2015-08-10 19:11:39 +00:00
LLVMBuild.txt Remove the very substantial, largely unmaintained legacy PGO 2013-10-02 15:42:23 +00:00
README.txt Revert previous test commit. 2016-01-04 19:13:29 +00:00

README.txt 

Low Level Virtual Machine (LLVM)
================================

This directory and its subdirectories contain source code for LLVM,
a toolkit for the construction of highly optimized compilers,
optimizers, and runtime environments.

LLVM is open source software. You may freely distribute it under the terms of
the license agreement found in LICENSE.txt.

Please see the documentation provided in docs/ for further
assistance with LLVM, and in particular docs/GettingStarted.rst for getting
started with LLVM and docs/README.txt for an overview of LLVM's
documentation setup.

If you are writing a package for LLVM, see docs/Packaging.rst for our
suggestions.