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Simon Pilgrim f357de2ce2 [X86][SSE] lowerAddSubToHorizontalOp - enable ymm extraction+fold 
Limiting scalar hadd/hsub generation to the lowest xmm looks to be unnecessary - we will be extracting one upper xmm whatever, and we can remove a shuffle by using the hop which is inline with what shouldUseHorizontalOp expects to happen anyway.

Testing on btver2 (the main target for fast-hops) shows this is beneficial even for float ops where we have a 'shuffle' to extract the float result:
https://godbolt.org/z/0R-U-K

Differential Revision: https://reviews.llvm.org/D61426

llvm-svn: 359786
2019-05-02 14:00:55 +00:00
benchmarks Pull google/benchmark library to the LLVM tree 2018-08-28 09:42:41 +00:00
bindings [OCaml] Update api to account for FNeg and CallBr instructions 2019-04-16 15:00:19 +00:00
cmake Add llvm-profdata to LLVM_TOOLCHAIN_TOOLS 2019-04-30 15:35:16 +00:00
docs FileCheck [4/12]: Introduce @LINE numeric expressions 2019-05-02 00:04:38 +00:00
examples [JITLink] Update BuildingAJIT tutorials to account for API changes in r358818. 2019-04-20 17:35:28 +00:00
include [LTO] Migrate typedef to using 2019-05-02 10:52:34 +00:00
lib [X86][SSE] lowerAddSubToHorizontalOp - enable ymm extraction+fold 2019-05-02 14:00:55 +00:00
projects Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
resources
runtimes [CMake] Replace the sanitizer support in runtimes build with multilib 2019-04-22 23:31:39 +00:00
test [X86][SSE] lowerAddSubToHorizontalOp - enable ymm extraction+fold 2019-05-02 14:00:55 +00:00
tools [llvm-strip]Add --no-strip-all to disable --strip-all behaviour (including default stripping) 2019-05-02 11:53:02 +00:00
unittests Object/Minidump: Add support for the ThreadList stream 2019-05-02 07:45:42 +00:00
utils Revert r359717, "Make check-clang depend on the clang-check binary always" 2019-05-01 23:32:38 +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 Disable tidy checks with too many hits 2019-02-01 11:20:13 +00:00
.gitattributes [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
.gitignore [clangd] Store index in '.clangd/index' instead of '.clangd-index' 2019-02-20 19:08:06 +00:00
CMakeLists.txt [CMake] Move configuration of LLVM_CXX_STD to HandleLLVMOptions.cmake 2019-04-09 08:14:32 +00:00
CODE_OWNERS.TXT [llvm-mca] Move llvm-mca library to llvm/lib/MCA. 2018-12-17 08:08:31 +00:00
configure
CREDITS.TXT add Qiu Chaofan (qiucf@cn.ibm.com) to the CREDITS.txt 2019-04-23 02:37:48 +00:00
LICENSE.TXT Fix typos throughout the license files that somehow I and my reviewers 2019-01-21 09:52:34 +00:00
llvm.spec.in Update structured references to the license to the new license. 2019-01-19 11:30:51 +00:00
LLVMBuild.txt Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
README.txt Testing commit access 2019-02-19 20:38:51 +00:00
RELEASE_TESTERS.TXT Update the list of platforms & archs 2018-12-16 14:47:16 +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,
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LLVM is open source software. You may freely distribute it under the terms of
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Please see the documentation provided in docs/ for further
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If you are writing a package for LLVM, see docs/Packaging.rst for our
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