llvm-project/lld
James Henderson b427d4eced [ELF] Don't create empty output section for unreferenced PROVIDEs
LLD removes empty output sections otherwise specified in the linker
script. Prior to this change however, if section descriptions included
ANY kind of symbol assignment, then the consequent output section would
not be removed, even if the assignment was marked with PROVIDE and not
actually triggered (i.e. the symbol was never referenced). This change
modifies the isDiscarable function to ignore such directives when
determining whether a section should be discarded, in keeping with
bfd's behaviour. Symbol assignments that do result in a symbol
definition will continue to result in a kept section (this is not
actually the same as bfd's behaviour, but it is simpler, and probably
makes more sense).

Reviewed By: grimar

Differential Revision: https://reviews.llvm.org/D48771

llvm-svn: 336184
2018-07-03 09:23:25 +00:00
..
COFF [lld] Address post-commit review of r335848 2018-06-29 15:34:36 +00:00
Common [LTO] Errors in LLVM backend should manifest as lld errors 2018-07-02 21:01:43 +00:00
ELF [ELF] Don't create empty output section for unreferenced PROVIDEs 2018-07-03 09:23:25 +00:00
MinGW [MinGW] Implement the GNU ld options -S/--strip-debug 2018-06-29 06:08:31 +00:00
cmake/modules [CMake] Properly conditionalize installation of lld libraries 2018-03-09 13:09:36 +00:00
docs Implement --{push,pop}-state. 2018-05-31 13:00:25 +00:00
include/lld [Darwin] Use errorHandler from liblldCommon 2018-06-12 02:34:04 +00:00
lib [Darwin] Do not error on '-lto_library' option 2018-06-13 18:59:14 +00:00
test [ELF] Don't create empty output section for unreferenced PROVIDEs 2018-07-03 09:23:25 +00:00
tools/lld [Darwin] Use errorHandler from liblldCommon 2018-06-12 02:34:04 +00:00
unittests [Darwin] Use errorHandler from liblldCommon 2018-06-12 02:34:04 +00:00
utils Add a script to run various benchmarks and send the result to lnt. 2017-11-14 16:40:30 +00:00
wasm [WebAssembly] Set threadmodel during LTO 2018-07-02 16:27:50 +00:00
.arcconfig [lld] Set up .arcconfig to point to new Diffusion LLD repository 2017-12-06 20:56:23 +00:00
.clang-format
.gitignore
CMakeLists.txt [WebAssembly] Initial wasm linker implementation 2017-11-17 18:14:09 +00:00
CODE_OWNERS.TXT [WebAssembly] Initial wasm linker implementation 2017-11-17 18:14:09 +00:00
LICENSE.TXT Update copyright year to 2018. 2018-06-18 12:22:17 +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.