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f3b9c95869
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Jatin Bhateja f3b9c95869 [X86] Allow cross-lane permutations for sub targets supporting AVX2. 
Summary:
Most instructions in AVX work “in-lane”, that is, each source element is applied only to other
elements of the same lane, thus a cross lane permutation is costly and needs more than one instrution.
AVX2 includes instructions to perform any-to-any permutation of words over a 256-bit register
and vectorized table lookup.

This should also Fix PR34369

Differential Revision: https://reviews.llvm.org/D37388

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@312608 91177308-0d34-0410-b5e6-96231b3b80d8
2017-09-06 02:58:47 +00:00
bindings Update the Go bindings for r309426 (remove offset from llvm.dbg.value) 2017-07-28 22:44:44 +00:00
cmake Move some CLI utils out of llvm-isel-fuzzer and into the library 2017-09-02 23:43:04 +00:00
docs Fix RST syntax in LangRef for llvm.codeview.annotation intrinsic 2017-09-05 20:26:25 +00:00
examples [ORC] Refactor OrcRemoteTarget code to expose its RPC API, reduce 2017-09-04 20:54:46 +00:00
include [ORC] Fix some comments in JITSymbol. 2017-09-06 02:53:37 +00:00
lib [X86] Allow cross-lane permutations for sub targets supporting AVX2. 2017-09-06 02:58:47 +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 target specific name for all runtimes targets 2017-09-02 02:28:03 +00:00
test [X86] Allow cross-lane permutations for sub targets supporting AVX2. 2017-09-06 02:58:47 +00:00
tools Use the section name if a STT_SECTION symbol has empty name. 2017-09-06 00:57:53 +00:00
unittests [ORC] Convert null remote symbols to null JITSymbols. 2017-09-05 22:24:40 +00:00
utils [TableGen] Teach tablegen to allow SDNPCommutable nodes with more than 2 operands. 2017-09-04 03:44:33 +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] Stop putting the revision info in LLVM_VERSION_STRING 2017-08-29 21:44:21 +00:00
CODE_OWNERS.TXT [ARC] Add ARC backend. 2017-08-24 15:40:33 +00:00
configure Remove autoconf support 2016-01-26 21:29:08 +00:00
CREDITS.TXT Another test commit 2017-07-01 03:24:06 +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 access 2017-08-18 02:39:28 +00:00
RELEASE_TESTERS.TXT [RelTest] Diana is doing both releases now 2017-07-14 08:33:52 +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.