llvm-project/lld
Fangrui Song db1988f038 [ELF] Don't change binding to STB_WEAK for an undefined specified by -u
Similar to D66992.
In GNU ld, a -u specified symbol is a STB_DEFAULT undefined.
It cannot be changed to STB_WEAK by a later STB_WEAK undefined in a regular object file.

The behavior is consistent with our model because -u means "we need to fetch a lazy definition".
It should not be altered just because there is also a STB_WEAK undefined.

Note, our -u semantics are still different from GNU ld (https://github.com/ClangBuiltLinux/linux/issues/515):
we don't force the specified symbol to appear in .symtab This is a deliberate decision.

Reviewed By: grimar

Differential Revision: https://reviews.llvm.org/D88945
2020-10-08 08:31:34 -07:00
..
COFF [LLD] [MinGW] Simplify handling of os/subsystem version 2020-10-05 23:08:02 +03:00
Common [LLD] Fix /time formatting for very long runs. NFC. 2020-10-02 09:53:43 -04:00
ELF [ELF] Don't change binding to STB_WEAK for an undefined specified by -u 2020-10-08 08:31:34 -07:00
MachO Internalize functions from various tools. NFC 2020-09-26 15:57:13 -07:00
MinGW [LLD] [MinGW] Move an option definitions to alphabetical order, wrap a line. NFC. 2020-10-07 15:14:07 +03:00
cmake/modules lld: Let find_package(LLD) work 2020-05-14 09:59:53 -04:00
docs [lld][WebAssembly] Allow exporting of mutable globals 2020-09-30 17:53:27 -07:00
include/lld Re-land "[PDB] Merge types in parallel when using ghashing" 2020-09-30 15:44:38 -07:00
lib [LLD][COFF] Cover usage of LLD-as-a-library in tests 2020-09-24 15:07:50 -04:00
test [ELF] Don't change binding to STB_WEAK for an undefined specified by -u 2020-10-08 08:31:34 -07:00
tools/lld [LLD][COFF] Cover usage of LLD-as-a-library in tests 2020-09-24 15:07:50 -04:00
unittests Use INTERFACE_COMPILE_OPTIONS to disable -Wsuggest-override for any target that links to gtest 2020-07-27 08:37:01 -07:00
utils Python 2/3 compatibility 2019-03-20 07:42:13 +00:00
wasm [WebAssembly] New-style command support 2020-09-30 19:02:40 -07:00
.clang-format
.clang-tidy [lld] Add .clang-tidy to customize readability-identifier-naming.{Member,Parameter,Variable}Case => camelBack 2020-03-09 08:26:41 -07:00
.gitignore
CMakeLists.txt [LLD] Allow configuring default ld.lld backend 2020-09-15 08:50:02 +03:00
CODE_OWNERS.TXT Add code owners of new MachO port 2020-09-02 19:32:12 -07:00
LICENSE.TXT
README.md

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.