mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-19 11:02:59 +02:00
Mirror of https://github.com/RPCS3/llvm-mirror
60633f66f7
This is a workaround for the bug described in PR31652 and http://lists.llvm.org/pipermail/llvm-dev/2017-July/115497.html. The temporary solution is to add a function EqualityPropUnSafe. In EqualityPropUnSafe, for some simple patterns we can know the equality comparison may contains undef, so we regard such comparison as unsafe and will not do loop-unswitching for them. We also need to disable the select simplification when one of select operand is undef and its result feeds into equality comparison. The patch cannot clear the safety issue caused by the bug, but it can suppress the issue from happening to some extent. Differential Revision: https://reviews.llvm.org/D35811 llvm-svn: 309059 |
||
---|---|---|
bindings | ||
cmake | ||
docs | ||
examples | ||
include | ||
lib | ||
projects | ||
resources | ||
runtimes | ||
test | ||
tools | ||
unittests | ||
utils | ||
.arcconfig | ||
.clang-format | ||
.clang-tidy | ||
.gitignore | ||
CMakeLists.txt | ||
CODE_OWNERS.TXT | ||
configure | ||
CREDITS.TXT | ||
LICENSE.TXT | ||
llvm.spec.in | ||
LLVMBuild.txt | ||
README.txt | ||
RELEASE_TESTERS.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.