llvm-project/clang
Kai Luo e4ed93cb25 [PowerPC] Implement XL compatible behavior of __compare_and_swap
According to https://www.ibm.com/docs/en/xl-c-and-cpp-aix/16.1?topic=functions-compare-swap-compare-swaplp
XL's `__compare_and_swap` has a weird behavior that

> In either case, the contents of the memory location specified by addr are copied into the memory location specified by old_val_addr.

(unlike c11 `atomic_compare_exchange` specified in http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1548.pdf)

This patch let clang's implementation follow this behavior.

Reviewed By: jsji

Differential Revision: https://reviews.llvm.org/D106344
2021-07-23 01:16:02 +00:00
..
INPUTS
bindings
cmake [ifs][elfabi] Merge llvm-ifs/elfabi tools 2021-07-19 11:23:19 -07:00
docs [DebugInfo] Add -fno-ctor-homing for as counterpart to -fuse-ctor-homing 2021-07-22 14:52:36 -07:00
examples
include [DebugInfo] Add -fno-ctor-homing for as counterpart to -fuse-ctor-homing 2021-07-22 14:52:36 -07:00
lib [PowerPC] Implement XL compatible behavior of __compare_and_swap 2021-07-23 01:16:02 +00:00
runtime Prepare Compiler-RT for GnuInstallDirs, matching libcxx, document all 2021-07-13 15:21:41 +00:00
test [PowerPC] Implement XL compatible behavior of __compare_and_swap 2021-07-23 01:16:02 +00:00
tools [clang] Introduce SourceLocation::[U]IntTy typedefs. 2021-07-21 10:45:46 +01:00
unittests [clang][AST] Add support for DecompositionDecl to ASTImporter. 2021-07-22 13:09:42 +02:00
utils [Clang][RISCV] Support half-precision floating point for RVV intrinsics. 2021-07-19 23:17:01 +08:00
www Partially implement P1401R5 (Narrowing contextual conversions to bool) 2021-07-12 08:06:27 -04:00
.clang-format
.clang-tidy .clang-tidy: Disable misc-no-recursion in general/across the monorepo 2021-06-08 08:31:33 -07:00
.gitignore
CMakeLists.txt
CODE_OWNERS.TXT
INSTALL.txt
LICENSE.TXT
ModuleInfo.txt
NOTES.txt
README.txt

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/