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llvm-project/compiler-rt
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Jianzhou Zhao 4d1d8ae710 Replace shadow space zero-out by madvise at mmap 
After D88686, munmap uses MADV_DONTNEED to ensure zero-out before the
next access. Because the entire shadow space is created by MAP_PRIVATE
and MAP_ANONYMOUS, the first access is also on zero-filled values.

So it is fine to not zero-out data, but use madvise(MADV_DONTNEED) at
mmap. This reduces runtime
overhead.

Reviewed-by: morehouse

Differential Revision: https://reviews.llvm.org/D88755
 		2020-10-06 21:29:50 +00:00
..
cmake [CMake] Track TSan's dependency on C++ headers 2020-10-06 13:58:35 -07:00
docs
…
include [compiler-rt] [netbsd] Regenerate syscall hooks 2020-09-10 20:16:39 +02:00
lib Replace shadow space zero-out by madvise at mmap 2020-10-06 21:29:50 +00:00
test Replace shadow space zero-out by madvise at mmap 2020-10-06 21:29:50 +00:00
tools Add GWP-ASan fuzz target to compiler-rt/tools. 2019-08-27 18:28:07 +00:00
unittests [Scudo] [GWP-ASan] Add GWP-ASan to Scudo Standalone. 2019-12-13 09:09:41 -08:00
utils [compiler-rt] [netbsd] Update generate_netbsd_syscalls.awk 2020-09-10 20:16:17 +02:00
www [www] Change URLs to HTTPS. 2019-10-24 13:25:15 -07:00
.clang-tidy [NFC][compiler-rt] Refine .clang-tidy checks 2020-09-05 15:42:15 -07:00
.gitignore
…
CMakeLists.txt [AIX][compiler-rt] Use the AR/ranlib mode flag for 32-bit and 64-bit mode 2020-09-22 11:10:47 -04:00
CODE_OWNERS.TXT
…
CREDITS.TXT
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LICENSE.TXT Fix typos throughout the license files that somehow I and my reviewers 2019-01-21 09:52:34 +00:00
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.

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