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Philip Reames b0ac285ee2 Conservatively add volatility and atomic checks in a few places 
As background, starting in D66309, I'm working on support unordered atomics analogous to volatile flags on normal LoadSDNode/StoreSDNodes for X86.

As part of that, I spent some time going through usages of LoadSDNode and StoreSDNode looking for cases where we might have missed a volatility check or need an atomic check. I couldn't find any cases that clearly miscompile - i.e. no test cases - but a couple of pieces in code loop suspicious though I can't figure out how to exercise them.

This patch adds defensive checks and asserts in the places my manual audit found. If anyone has any ideas on how to either a) disprove any of the checks, or b) hit the bug they might be fixing, I welcome suggestions.

Differential Revision: https://reviews.llvm.org/D68419

llvm-svn: 374261
2019-10-09 23:43:33 +00:00
benchmarks
bindings Revert "[OCaml] Handle nullptr in Llvm.global_initializer" 2019-10-01 08:29:07 +00:00
cmake Reland r349624: Let TableGen write output only if it changed, instead of doing so in cmake 2019-10-03 21:22:28 +00:00
docs [Docs] Adds section for Additional Topics on Reference page 2019-10-09 21:09:09 +00:00
examples [Orc] Roll back ThreadPool to std::function 2019-09-13 11:59:51 +00:00
include GlobalISel: Implement fewerElementsVector for G_BUILD_VECTOR 2019-10-09 22:44:43 +00:00
lib Conservatively add volatility and atomic checks in a few places 2019-10-09 23:43:33 +00:00
projects Add few docs and implementation of strcpy and strcat. 2019-10-04 17:30:54 +00:00
resources
runtimes Adding support for overriding LLVM_ENABLE_RUNTIMES for runtimes builds. 2019-09-24 22:38:18 +00:00
test [WebAssembly] Fix tests missed in rL374235 2019-10-09 23:06:38 +00:00
tools [AIX][XCOFF][NFC] Change the SectionLen field name of CSect Auxiliary entry to SectionOrLength. 2019-10-09 16:19:39 +00:00
unittests [WebAssembly] Fix tests missed in rL374235 2019-10-09 23:06:38 +00:00
utils gn build: Merge r374245 2019-10-09 23:10:49 +00:00
.arcconfig
.clang-format
.clang-tidy
.gitattributes Fix the "git modified" issue on the preserve-comments-crlf.s. 2019-09-10 12:17:49 +00:00
.gitignore
CMakeLists.txt Add few docs and implementation of strcpy and strcat. 2019-10-04 17:30:54 +00:00
CODE_OWNERS.TXT Update email address in CODE_OWNERS 2019-07-01 16:01:15 +00:00
configure
CREDITS.TXT Update email address. 2019-07-17 07:02:02 +00:00
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt
README.txt Test commit. 2019-10-03 14:57:49 +00:00
RELEASE_TESTERS.TXT

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.