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Peter Collingbourne a3886c11ee LTO: Try to open cache files before renaming them.
It appears that a potential race between the cache client and the cache
pruner that I thought was unlikely actually happened in practice [1].
Try to avoid the race condition by opening the temporary file before
renaming it. Do this only on non-Windows platforms because we cannot
rename open files on Windows using the sys::fs::rename function.

[1] https://luci-logdog.appspot.com/v/?s=chromium%2Fbb%2Fchromium.memory%2FLinux_CFI%2F1610%2F%2B%2Frecipes%2Fsteps%2Fcompile%2F0%2Fstdout

Differential Revision: https://reviews.llvm.org/D37410

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@312567 91177308-0d34-0410-b5e6-96231b3b80d8
2017-09-05 19:51:38 +00:00
bindings Update the Go bindings for r309426 (remove offset from llvm.dbg.value) 2017-07-28 22:44:44 +00:00
cmake Move some CLI utils out of llvm-isel-fuzzer and into the library 2017-09-02 23:43:04 +00:00
docs [Docs] Update CodingStandards to recommend range-based for loops 2017-08-31 12:34:20 +00:00
examples [ORC] Refactor OrcRemoteTarget code to expose its RPC API, reduce 2017-09-04 20:54:46 +00:00
include LTO: Try to open cache files before renaming them. 2017-09-05 19:51:38 +00:00
lib LTO: Try to open cache files before renaming them. 2017-09-05 19:51:38 +00:00
projects Add temporary workaround to allow in-tree libc++ builds on Windows 2017-05-11 01:44:30 +00:00
resources In MSVC builds embed a VERSIONINFO resource in our exe and DLL files. 2015-06-12 15:58:29 +00:00
runtimes [CMake][runtimes] Use target specific name for all runtimes targets 2017-09-02 02:28:03 +00:00
test [X86] Remove unnecessary (v4f32 (X86vzmovl (v4f32 (scalar_to_vector FR32X)))) patterns 2017-09-05 19:09:02 +00:00
tools LTO: Try to open cache files before renaming them. 2017-09-05 19:51:38 +00:00
unittests [ORC] Add a pair of ORC layers that forward object-layer operations via RPC. 2017-09-05 03:34:09 +00:00
utils [TableGen] Teach tablegen to allow SDNPCommutable nodes with more than 2 operands. 2017-09-04 03:44:33 +00:00
.arcconfig project_id is from another era in phabricator land and does not provide any value. 2016-09-27 15:47:29 +00:00
.clang-format
.clang-tidy .clang-tidy: correct style name is 'camelBack' not 'lowerCase'. 2016-09-13 19:04:26 +00:00
.gitignore gitignore: Ignore .vs folder (VS2017 config files) 2017-04-08 00:16:58 +00:00
CMakeLists.txt [cmake] Stop putting the revision info in LLVM_VERSION_STRING 2017-08-29 21:44:21 +00:00
CODE_OWNERS.TXT [ARC] Add ARC backend. 2017-08-24 15:40:33 +00:00
configure Remove autoconf support 2016-01-26 21:29:08 +00:00
CREDITS.TXT Another test commit 2017-07-01 03:24:06 +00:00
LICENSE.TXT Bump year to 2017 in LICENSE.txt 2017-01-12 18:02:42 +00:00
llvm.spec.in [Sparc] Implement i64 load/store support for 32-bit sparc. 2015-08-10 19:11:39 +00:00
LLVMBuild.txt
README.txt Test commit access 2017-08-18 02:39:28 +00:00
RELEASE_TESTERS.TXT [RelTest] Diana is doing both releases now 2017-07-14 08:33:52 +00:00

Low Level Virtual Machine (LLVM)
================================

This directory and its subdirectories contain source code for LLVM,
a toolkit for the construction of highly optimized compilers,
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Please see the documentation provided in docs/ for further
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If you are writing a package for LLVM, see docs/Packaging.rst for our
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