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Frederic Riss cc5b509b9e Workaround TestConcurrentMany* flakiness in a more pricipled way 
The flakiness on our local machines seems to come for a race in the kernel
between task_suspend and the creation of the Mach exceptions for the threads
that hit breakpoints. The debugserver code is written with the assumption
that the kernel will be able to provide us with all the exceptions for a
given task once task_suspend returns. On machines with higher core counts,
this seems not to be the case. The first batch of exceptions we get after
task_suspend does not contain exceptions for all the threads that have hit
a breakpoint, thus they get misreprorted in the first stop packet.

Adding a 1ms timeout to the call that retrieves the batch of exceptions
seems to workaround the issue reliably on our machines, and it shoulnd't
impact standard debugging scenarios too much (a stop will incur an additional
1ms delay). We'll be talking to the kernel team to figure out the right
contract for those APIs.

This patch also reverts part of Jonas' previous workaround for the
issue (r370785).

llvm-svn: 370916
 		2019-09-04 16:13:12 +00:00
clang [X86] Add support for avx512bf16 for __builtin_cpu_supports and compiler-rt's cpu indicator. 2019-09-04 16:01:43 +00:00
clang-tools-extra [Driver] Use shared singleton instance of DriverOptTable 2019-09-04 14:26:28 +00:00
compiler-rt [X86] Add support for avx512bf16 for __builtin_cpu_supports and compiler-rt's cpu indicator. 2019-09-04 16:01:43 +00:00
debuginfo-tests Make nrvo-string test more robust. 2019-06-27 20:38:37 +00:00
libclc Revert "Rename F_{None,Text,Append} to OF_{None,Text,Append}. NFC" 2019-08-05 17:23:23 +00:00
libcxx [libc++] Move __clamp_to_integral to <cmath>, and harden against min()/max() macros 2019-09-04 13:35:03 +00:00
libcxxabi Provide a meaningful diagnostic when LLVM_PATH doesn't point to a directory 2019-08-19 23:51:26 +00:00
libunwind [runtimes] Don't depend on libpthread on Android 2019-07-22 20:41:03 +00:00
lld [ELF] Fix spell corrector: don't call elf::InputFile::getSymbols() on shared objects 2019-09-04 11:02:58 +00:00
lldb Workaround TestConcurrentMany* flakiness in a more pricipled way 2019-09-04 16:13:12 +00:00
llgo IR: Support parsing numeric block ids, and emit them in textual output. 2019-03-22 18:27:13 +00:00
llvm [X86] Add support for avx512bf16 for __builtin_cpu_supports and compiler-rt's cpu indicator. 2019-09-04 16:01:43 +00:00
openmp [OPENMP][NVPTX]Fix parallel level counter in non-SPMD mode. 2019-09-03 18:11:50 +00:00
parallel-libs
…
polly [DependenceInfo] Compute WAR dependence info using ISL kills. NFC. 2019-08-29 18:55:55 +00:00
pstl [pstl] Allow customizing whether per-TU insulation is provided 2019-08-13 12:49:00 +00:00
.arcconfig Update monorepo .arcconfig with new project callsign. 2019-01-31 14:34:59 +00:00
.clang-format
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.clang-tidy Disable tidy checks with too many hits 2019-02-01 11:20:13 +00:00
.git-blame-ignore-revs Add LLDB reformatting to .git-blame-ignore-revs 2019-09-04 09:31:55 +00:00
.gitignore Add a newline at the end of the file 2019-09-04 06:33:46 +00:00
README.md
…

README.md

The LLVM Compiler Infrastructure

This directory and its subdirectories contain source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and runtime environments.