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Mirror of https://github.com/RPCS3/llvm-mirror
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Simon Pilgrim dd904ff7d4 [X86][SSE] Prefer trunc(movd(x)) to pextrb(x,0) 
If we're extracting the 0'th index of a v16i8 vector we're better off using MOVD than PEXTRB, unless we're storing the value or we require the implicit zero extension of PEXTRB.

The biggest perf diff is on SLM targets where MOVD (uops=1, lat=3 tp=1) is notably faster than PEXTRB (uops=2, lat=5, tp=4).

This matches what we already do for PEXTRW.

Differential Revision: https://reviews.llvm.org/D76138
2020-03-13 18:43:04 +00:00
benchmarks
bindings Add an SDK attribute to DICompileUnit 2020-03-11 14:14:06 -07:00
cmake [clang][cmake] Include generated rst files in html built by docs-clang-html target 2020-03-05 21:30:37 -08:00
docs Add support for SHA256 source file checksums in debug info 2020-03-12 16:32:05 -07:00
examples Add missing "llvm/Support/Host.h" header to LLVM example after recent header trimming (NFC) 2020-03-12 00:12:03 +00:00
include [TableGen] Support combining AssemblerPredicates with ORs 2020-03-13 17:13:51 +00:00
lib [X86][SSE] Prefer trunc(movd(x)) to pextrb(x,0) 2020-03-13 18:43:04 +00:00
projects Add few docs and implementation of strcpy and strcat. 2019-10-04 17:30:54 +00:00
resources
runtimes [runtimes] When COMPILER_RT is enabled, consider SANITIZER prefixes 2020-03-11 14:22:20 -07:00
test [X86][SSE] Prefer trunc(movd(x)) to pextrb(x,0) 2020-03-13 18:43:04 +00:00
tools [llvm-objdump] --syms: print 'u' for STB_GNU_UNIQUE 2020-03-13 08:04:09 -07:00
unittests [AssumeBundles] filter usefull attriutes to preserve 2020-03-13 17:35:47 +01:00
utils [TableGen] Support combining AssemblerPredicates with ORs 2020-03-13 17:13:51 +00:00
.clang-format
.clang-tidy - Update .clang-tidy to ignore parameters of main like functions for naming violations in clang and llvm directory 2020-01-31 16:49:45 +00:00
.gitattributes Fix the "git modified" issue on the preserve-comments-crlf.s. 2019-09-10 12:17:49 +00:00
.gitignore Continue removing llgo. 2020-02-10 10:33:58 -08:00
CMakeLists.txt [AVR] Include AVR by default in LLVM builds 2020-03-13 17:40:30 +13:00
CODE_OWNERS.TXT Remove myself from CODE_OWNERS. 2020-02-25 11:59:29 +00:00
configure
CREDITS.TXT Update email address. 2019-07-17 07:02:02 +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 Test commit. 2019-10-03 14:57:49 +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,
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.