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Mirror of https://github.com/RPCS3/llvm-mirror
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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
bindings [go bindings] Rmove duplicated conversion function definitions after r300843. 2017-04-20 19:06:11 +00:00
cmake CMake: Fix docs-llvm-man target when clang+llvm is in the same source tree 2017-05-15 09:34:23 +00:00
docs [LV] Report multiple reasons for not vectorizing under allowExtraAnalysis 2017-05-23 07:08:02 +00:00
examples [Kaleidoscope] toy.cpp use after move fix 2017-05-07 11:00:01 +00:00
include libDebugInfo: Support symbolizing using DWP files 2017-05-23 06:48:53 +00:00
lib [LV] Report multiple reasons for not vectorizing under allowExtraAnalysis 2017-05-23 07:08:02 +00:00
projects Add temporary workaround to allow in-tree libc++ builds on Windows 2017-05-11 01:44:30 +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 [CMake][runtimes] Use -nodefaultlibs for the runtimes build 2017-04-13 21:29:03 +00:00
test [LV] Report multiple reasons for not vectorizing under allowExtraAnalysis 2017-05-23 07:08:02 +00:00
tools Infer relocation model from module flags in relocatable LTO link. 2017-05-22 21:11:35 +00:00
unittests Cosmetic. Added braces to address gcc warning: suggest explicit braces to avoid ambiguous 'else' [-Wdangling-else]. 2017-05-23 05:00:10 +00:00
utils Revert r303259 - [globalisel][tablegen] Import rules containing intrinsic_wo_chain. 2017-05-22 10:14:33 +00:00
.arcconfig project_id is from another era in phabricator land and does not provide any value. 2016-09-27 15:47:29 +00:00
.clang-format Test commit. 2014-03-02 13:08:46 +00:00
.clang-tidy .clang-tidy: correct style name is 'camelBack' not 'lowerCase'. 2016-09-13 19:04:26 +00:00
.gitignore gitignore: Ignore .vs folder (VS2017 config files) 2017-04-08 00:16:58 +00:00
CMakeLists.txt CMake: Add LLVM_DYLIB_SYMBOL_VERSIONING option 2017-05-03 14:43:44 +00:00
CODE_OWNERS.TXT CODE_OWNERS: Take code ownership of instruction scheduling. 2017-03-10 18:34:37 +00:00
configure Remove autoconf support 2016-01-26 21:29:08 +00:00
CREDITS.TXT update of the url 2017-05-14 07:55:01 +00:00
LICENSE.TXT Bump year to 2017 in LICENSE.txt 2017-01-12 18:02:42 +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 Test commit. Added a blank line. 2017-03-06 20:45:33 +00:00
RELEASE_TESTERS.TXT Update the release tester for MIPS. NFC. 2017-01-17 11:00:28 +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.