llvm-project/llvm
Quentin Colombet 96f54de8ff [InstCombine] Optimize `atomicrmw <op>, 0` into `load atomic` when possible
This commit teaches InstCombine how to replace an atomicrmw operation
into a simple load atomic.
For a given `atomicrmw <op>`, this is possible when:
1. The ordering of that operation is compatible with a load (i.e.,
   anything that doesn't have a release semantic).
2. <op> does not modify the value being stored

Differential Revision: https://reviews.llvm.org/D57854

llvm-svn: 353471
2019-02-07 21:27:23 +00:00
..
benchmarks
bindings Fix format string in bindings/go/llvm/ir_test.go (PR40561) 2019-02-05 11:01:54 +00:00
cmake [cmake] Pass LLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN to NATIVE configure 2019-02-07 20:58:04 +00:00
docs Bump minimum toolchain version 2019-02-07 05:20:00 +00:00
examples Fix compilation of examples after 13680223b9 / r352827 2019-02-01 03:23:42 +00:00
include Move SMTSolver dump() methods out-of-line. 2019-02-07 21:03:18 +00:00
lib [InstCombine] Optimize `atomicrmw <op>, 0` into `load atomic` when possible 2019-02-07 21:27:23 +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 Revert "[CMake] Use __libc_start_main rather than fopen when checking for C library" 2019-01-28 19:26:41 +00:00
test [InstCombine] Optimize `atomicrmw <op>, 0` into `load atomic` when possible 2019-02-07 21:27:23 +00:00
tools [llvm-ar][libObject] Fix relative paths when nesting thin archives. 2019-02-07 16:41:06 +00:00
unittests GlobalISel: Try to make legalize rules more useful for vectors 2019-02-07 17:25:51 +00:00
utils gn build: Make check-{clang,lld,llvm} pass on FreeBSD. 2019-02-07 21:24:30 +00:00
.arcconfig
.clang-format
.clang-tidy Disable tidy checks with too many hits 2019-02-01 11:20:13 +00:00
.gitattributes
.gitignore gitignore: ignore clangd index files. 2019-01-25 14:05:18 +00:00
CMakeLists.txt Bump minimum toolchain version 2019-02-07 05:20:00 +00:00
CODE_OWNERS.TXT
CREDITS.TXT Remove a period from CREDITS.TXT (testing email change). NFC 2019-01-19 09:07:38 +00:00
LICENSE.TXT Fix typos throughout the license files that somehow I and my reviewers 2019-01-21 09:52:34 +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
RELEASE_TESTERS.TXT
configure
llvm.spec.in Update structured references to the license to the new license. 2019-01-19 11:30:51 +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
the license agreement found in LICENSE.txt.

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
suggestions.