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Carlo Marcelo Arenas Belón 81f5c6270c [compiler-rt] Implement __clear_cache on FreeBSD/powerpc 
dd9173420f (Add clear_cache implementation for ppc64. Fix buffer to
meet ppc64 alignment., 2017-07-28), adds an implementation for
__builtin___clear_cache on powerpc64, which was promptly ammended to
also be used with big endian mode in f67036b62c (This ppc64 implementation
of clear_cache works for both big and little endian., 2017-08-02)

clang will use this implementation for it's builtin on FreeBSD and result
in an abort() in the cases where 32-bit generation was requested (ex in
macppc or when the big endian powerpc64 build was done with "-m32") and as
reported[1] recently with pcre2, but there is no reason why the same code
couldn't be used in those cases, so use instead the more generic identifier
for the PowerPC architecture.

While at it, update the comment to reflect that POWER8/9 have a 128 byte
wide cache line and so the code could instead use 64 byte windows instead
but that possible optimization has been punted for now.

[1] https://github.com/PhilipHazel/pcre2/issues/92

Reviewed By: jhibbits, #powerpc, MaskRay

Differential Revision: https://reviews.llvm.org/D122640
2022-03-31 14:19:26 +00:00
..
cmake Do not generate x86_64 test targets on AS hosts 2022-03-30 11:31:11 -07:00
docs
include [memprof] Initialize MemInfoBlock data. 2022-03-22 14:35:57 -07:00
lib [compiler-rt] Implement __clear_cache on FreeBSD/powerpc 2022-03-31 14:19:26 +00:00
test [TSan] Add a runtime flag to print full thread creation stacks up to the main thread 2022-03-24 17:30:27 +01:00
tools
unittests Use lit_config.substitute instead of foo % lit_config.params everywhere 2022-03-16 09:57:41 +01:00
utils
www [compiler-rt] Remove forgotten mention of SVN modules, LLVM now uses Git. 2022-03-23 15:29:30 +01:00
.clang-tidy
.gitignore
CMakeLists.txt [CMake] Use generator expression to get in-tree libc++ path 2022-01-26 14:12:48 -08:00
CODE_OWNERS.TXT
CREDITS.TXT
LICENSE.TXT
README.txt

README.txt 

Compiler-RT
================================

This directory and its subdirectories contain source code for the compiler
support routines.

Compiler-RT is open source software. You may freely distribute it under the
terms of the license agreement found in LICENSE.txt.

================================