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Thomas Lively f3b4f99007 [WebAssembly] Remove uses of ThreadModel 
Summary:
In the clang UI, replaces -mthread-model posix with -matomics as the
source of truth on threading. In the backend, replaces
-thread-model=posix with the atomics target feature, which is now
collected on the WebAssemblyTargetMachine along with all other used
features. These collected features will also be used to emit the
target features section in the future.

The default configuration for the backend is thread-model=posix and no
atomics, which was previously an invalid configuration. This change
makes the default valid because the thread model is ignored.

A side effect of this change is that objects are never emitted with
passive segments. It will instead be up to the linker to decide
whether sections should be active or passive based on whether atomics
are used in the final link.

Reviewers: aheejin, sbc100, dschuff

Subscribers: mehdi_amini, jgravelle-google, hiraditya, sunfish, steven_wu, dexonsmith, rupprecht, jfb, jdoerfert, cfe-commits, llvm-commits

Tags: #clang, #llvm

Differential Revision: https://reviews.llvm.org/D58742

llvm-svn: 355112
 		2019-02-28 18:39:08 +00:00
..
COFF [LLD][COFF] Support /threads[:no] like the ELF driver 2019-02-27 20:53:50 +00:00
Common Remove a function from header and move the implementation to a .cpp file. NFC. 2019-02-22 23:59:43 +00:00
ELF [DebugInfo] add SectionedAddress to DebugInfo interfaces. 2019-02-27 13:17:36 +00:00
MinGW [MinGW] Hook up the --exclude-all-symbols option 2019-02-19 21:57:49 +00:00
cmake/modules [CMake] Properly conditionalize installation of lld libraries 2018-03-09 13:09:36 +00:00
docs Split a long line to avoid annoying horizontal scrolling on a browser. 2019-02-23 00:24:18 +00:00
include/lld [LLD][COFF] Support /threads[:no] like the ELF driver 2019-02-27 20:53:50 +00:00
lib Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
test [WebAssembly] Remove uses of ThreadModel 2019-02-28 18:39:08 +00:00
tools/lld Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
unittests Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
utils Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
wasm [WebAssembly] Remove uses of ThreadModel 2019-02-28 18:39:08 +00:00
.arcconfig
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.clang-format
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.gitignore
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CMakeLists.txt
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CODE_OWNERS.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.md Note that the test .tar.xz has been updated. 2017-12-22 19:37:32 +00:00

README.md

LLVM Linker (lld)

This directory and its subdirectories contain source code for the LLVM Linker, a modular cross platform linker which is built as part of the LLVM compiler infrastructure project.

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

Benchmarking

In order to make sure various developers can evaluate patches over the same tests, we create a collection of self contained programs.

It is hosted at https://s3-us-west-2.amazonaws.com/linker-tests/lld-speed-test.tar.xz

The current sha256 is 10eec685463d5a8bbf08d77f4ca96282161d396c65bd97dc99dbde644a31610f.