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Kuba Mracek 3ecf9dcaf4 [compiler-rt] Replace forkpty with posix_spawn 
On Darwin, we currently use forkpty to communicate with the "atos" symbolizer. There are several problems that fork or forkpty has, e.g. that after fork, interceptors are still active and this sometimes causes crashes or hangs. This is especially problematic for TSan, which uses interceptors for OS-provided locks and mutexes, and even Libc functions use those.

This patch replaces forkpty with posix_spawn. Since posix_spawn doesn't fork (at least on Darwin), the interceptors are not a problem. Additionally, this also fixes a latent threading problem with ptsname (it's unsafe to use this function in multithreaded programs). Yet another benefit is that we'll handle post-fork failures (e.g. sandbox disallows "exec") gracefully now.

Differential Revision: https://reviews.llvm.org/D40032

llvm-svn: 324846
 		2018-02-11 19:23:42 +00:00
clang [X86] Change the signature of the AVX512 packed fp compare intrinsics to return vXi1 mask. Make bitcasts to scalar explicit in IR 2018-02-10 23:34:27 +00:00
clang-tools-extra [clang-move] Don't dump macro symbols. 2018-02-09 15:57:30 +00:00
compiler-rt [compiler-rt] Replace forkpty with posix_spawn 2018-02-11 19:23:42 +00:00
debuginfo-tests [debuginfo-tests] Support moving debuginfo-tests to llvm/projects 2017-12-12 16:54:20 +00:00
libclc Add vstore_half_rte implementation 2018-02-06 18:44:50 +00:00
libcxx Use multi-key tree search for {map, set}::{count, equal_range} 2018-02-10 02:53:47 +00:00
libcxxabi Fix compilation in C++17 mode. 2018-02-07 23:23:23 +00:00
libunwind [cmake] [libunwind] LLVM_FOUND isn't always set, so just test if 2018-01-27 19:31:44 +00:00
lld Fixed extra ‘;’ warning 2018-02-11 02:32:21 +00:00
lldb Looks like this fails when built i386 on linux bots, possible target 2018-02-10 01:57:33 +00:00
llgo irgen: Create functions instead of global variables for builtin hash and equal algorithms. 2017-06-04 22:11:28 +00:00
llvm [X86] Update some required-vector-width.ll test cases to not pass 512-bit vectors in arguments or return. 2018-02-11 18:52:16 +00:00
openmp [OMPT] Add tool_available_search testcase 2018-02-08 10:04:33 +00:00
parallel-libs [Axccel] Remove -Wno-missing-braces in build 2016-12-19 21:34:07 +00:00
polly [ScopBuilder] Make -polly-stmt-granularity=scalar-indep the default. 2018-02-03 06:59:47 +00:00
README.md Add an svn project to contain the files that appear at the root of the 2017-10-19 21:09:49 +00:00

README.md

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.