llvm-project/lld
Sam Clegg 758633f922 [lld][WebAssembly] Add new `--import-undefined` option
This change revisits https://reviews.llvm.org/D79248 which originally
added support for the --unresolved-symbols flag.

At the time I thought it would make sense to add a third option to this
flag called `import-functions` but it turns out (as was suspects by on
the reviewers IIRC) that this option can be authoganal.

Instead I've added a new option called `--import-undefined` that only
operates on symbols that can be imported (for example, function symbols
can always be imported as opposed to data symbols we can only be
imported when compiling with PIC).

This option gives us the full expresivitiy that emscripten needs to be
able allow reporting of undefined data symbols as well as the option to
disable that.

This change does remove the `--unresolved-symbols=import-functions`
option, which is been in the codebase now for about a year but I would
be extremely surprised if anyone was using it.

Differential Revision: https://reviews.llvm.org/D103290
2021-06-17 11:44:21 -07:00
..
COFF [LLD] [COFF] Remove a stray duplicate comment. NFC. 2021-06-17 13:02:35 +03:00
Common [ELF] Simplify isValidCIdentifier. NFC 2021-03-11 09:38:15 -08:00
ELF [ELF] Consider that NOLOAD sections should be placed in a PT_LOAD segment 2021-06-16 12:36:45 +02:00
MachO [lld-macho] Rework mergeFlag to behave closer to what ld64 does. 2021-06-17 14:22:58 -04:00
MinGW [LLD] [MinGW] Pass the canExitEarly parameter through properly 2021-05-18 15:09:07 +03:00
cmake/modules [cmake] Add support for multiple distributions 2021-05-12 11:13:18 -07:00
docs [lld][WebAssembly] Add new `--import-undefined` option 2021-06-17 11:44:21 -07:00
include/lld [lld] Add missing includes (NFC) 2021-06-03 18:55:18 +02:00
lib [NFC] Fix "not used" warning 2021-04-26 22:09:23 -07:00
test [lld][WebAssembly] Add new `--import-undefined` option 2021-06-17 11:44:21 -07:00
tools/lld [lld-macho] Fix BUILD_SHARED_LIBS build 2021-06-03 19:58:43 +01:00
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
wasm [lld][WebAssembly] Add new `--import-undefined` option 2021-06-17 11:44:21 -07:00
.clang-format
.clang-tidy NFC: .clang-tidy: Inherit configs from parents to improve maintainability 2021-06-08 08:25:59 -07:00
.gitignore
CMakeLists.txt Fix lld macho standalone build by including llvm/Config/llvm-config.h instead of llvm/Config/config.h 2021-05-19 11:15:07 -04:00
CODE_OWNERS.TXT Add code owners of new MachO port 2020-09-02 19:32:12 -07:00
LICENSE.TXT
README.md [doc] Place sha256 in lld/README.md into backticks 2021-01-12 10:19:40 -08:00

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.