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Ayal Zaks f14a122eeb [LV] Avoid vectorizing loops under opt for size that involve SCEV checks 
Fix PR39417, PR39497

The loop vectorizer may generate runtime SCEV checks for overflow and stride==1
cases, leading to execution of original scalar loop. The latter is forbidden
when optimizing for size. An assert introduced in r344743 triggered the above
PR's showing it does happen. This patch fixes this behavior by preventing
vectorization in such cases.

Differential Revision: https://reviews.llvm.org/D53612

llvm-svn: 345959
2018-11-02 09:16:12 +00:00
benchmarks Pull google/benchmark library to the LLVM tree 2018-08-28 09:42:41 +00:00
bindings [TI removal] Remove TerminatorInst references from bindings. 2018-10-18 07:40:03 +00:00
cmake Enable -Wimplicit-fallthrough for clang as well as GCC 2018-11-01 20:31:44 +00:00
docs [COFF, ARM64] Implement Intrinsic.sponentry for AArch64 2018-11-01 23:22:25 +00:00
examples [BuildingAJIT] Update the Ch1 KaleidoscopeJIT class to expose errors to clients. 2018-10-18 00:51:38 +00:00
include LLVMTargetMachine/TargetPassConfig: Simplify handling of start/stop options; NFC 2018-11-02 01:31:50 +00:00
lib [LV] Avoid vectorizing loops under opt for size that involve SCEV checks 2018-11-02 09:16:12 +00:00
projects [cmake] Support moving debuginfo-tests to llvm/projects 2017-12-12 17:06:08 +00:00
resources In MSVC builds embed a VERSIONINFO resource in our exe and DLL files. 2015-06-12 15:58:29 +00:00
runtimes Revert "[CMake] Pass Clang defaults to runtimes builds" 2018-07-13 20:01:55 +00:00
test [LV] Avoid vectorizing loops under opt for size that involve SCEV checks 2018-11-02 09:16:12 +00:00
tools [gold-plugin] Fix a bunch of build warnings 2018-11-01 23:34:12 +00:00
unittests [XRay] Fix tests with updated fdr-dump 2018-11-02 08:35:46 +00:00
utils TableGen: Fix ASAN error 2018-10-31 17:46:21 +00:00
.arcconfig [llvm] Set up .arcconfig to point to Diffusion L repository 2018-01-12 15:37:41 +00:00
.clang-format
.clang-tidy .clang-tidy: correct style name is 'camelBack' not 'lowerCase'. 2016-09-13 19:04:26 +00:00
.gitattributes [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
.gitignore [git/svn] Ignore Visual Studio's CMakeSettings.json. 2018-10-29 14:51:02 +00:00
CMakeLists.txt [CMake] Fix a missing LLVM_ENABLE_IDE from r344555 2018-10-15 22:36:59 +00:00
CODE_OWNERS.TXT Add owner for llvm-objcopy 2018-08-09 22:05:19 +00:00
configure Remove autoconf support 2016-01-26 21:29:08 +00:00
CREDITS.TXT [NFC] Add periods to CREDITS.txt (testing git-llvm) 2018-10-26 06:57:02 +00:00
LICENSE.TXT Update copyright year to 2018. 2018-06-18 12:22:17 +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
README.txt Test commit. 2018-09-22 01:01:03 +00:00
RELEASE_TESTERS.TXT Remove myself from the release testers list. (NFC) 2018-06-20 21:25:50 +00:00

README.txt 

The LLVM Compiler Infrastructure
================================

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.