llvm-project/clang
Johannes Doerfert 95a25e4c32 [OpenMP][FIX] Do not use TBAA in type punning reduction GPU code PR46156
When we implement OpenMP GPU reductions we use type punning a lot during
the shuffle and reduce operations. This is not always compatible with
language rules on aliasing. So far we generated TBAA which later allowed
to remove some of the reduce code as accesses and initialization were
"known to not alias". With this patch we avoid TBAA in this step,
hopefully for all accesses that we need to.

Verified on the reproducer of PR46156 and QMCPack.

Reviewed By: ABataev

Differential Revision: https://reviews.llvm.org/D86037
2020-08-16 14:38:31 -05:00
..
INPUTS
bindings python bindings: fix DeprecationWarning 2020-08-10 15:25:23 -07:00
cmake Re-Re-land: [CodeView] Add full repro to LF_BUILDINFO record 2020-08-10 13:36:30 -04:00
docs [docs] Add missing semicolon to example. 2020-08-14 13:46:05 -07:00
examples [CMake] Fix building with -DBUILD_SHARED_LIBS=ON on mingw 2020-05-11 23:51:14 +03:00
include [DebugInfo] Add -fuse-ctor-homing cc1 flag so we can turn on constructor homing only if limited debug info is already on. 2020-08-13 15:48:55 -07:00
lib [OpenMP][FIX] Do not use TBAA in type punning reduction GPU code PR46156 2020-08-16 14:38:31 -05:00
runtime
test [OpenMP][FIX] Do not use TBAA in type punning reduction GPU code PR46156 2020-08-16 14:38:31 -05:00
tools Reland D61689 Change -gz and -Wa,--compress-debug-sections to use gABI compression (SHF_COMPRESSED) with integrated assembler 2020-08-03 15:12:01 -07:00
unittests [SyntaxTree] Split `TreeTestBase` into header and source 2020-08-14 07:29:07 +00:00
utils Introduce ns_error_domain attribute. 2020-08-13 15:05:12 +02:00
www DR2303: Prefer 'nearer' base classes during template deduction. 2020-07-31 05:39:55 -07:00
.clang-format
.clang-tidy
.gitignore
CMakeLists.txt [CMake] Print the autodetected host linker version 2020-08-05 20:22:28 -07:00
CODE_OWNERS.TXT
INSTALL.txt
LICENSE.TXT
ModuleInfo.txt
NOTES.txt
README.txt Revert "[nfc] test commit" 2020-05-16 15:12:04 -05:00

README.txt

//===----------------------------------------------------------------------===//
// C Language Family Front-end
//===----------------------------------------------------------------------===//

Welcome to Clang.  This is a compiler front-end for the C family of languages
(C, C++, Objective-C, and Objective-C++) which is built as part of the LLVM
compiler infrastructure project.

Unlike many other compiler frontends, Clang is useful for a number of things
beyond just compiling code: we intend for Clang to be host to a number of
different source-level tools.  One example of this is the Clang Static Analyzer.

If you're interested in more (including how to build Clang) it is best to read
the relevant web sites.  Here are some pointers:

Information on Clang:             http://clang.llvm.org/
Building and using Clang:         http://clang.llvm.org/get_started.html
Clang Static Analyzer:            http://clang-analyzer.llvm.org/
Information on the LLVM project:  http://llvm.org/

If you have questions or comments about Clang, a great place to discuss them is
on the Clang development mailing list:
  http://lists.llvm.org/mailman/listinfo/cfe-dev

If you find a bug in Clang, please file it in the LLVM bug tracker:
  http://llvm.org/bugs/