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Sam Clegg ac2be2b6a3 [lld][WebAssembly] Fix for weak undefined functions in -pie mode 
This fixes two somewhat related issues.  Firstly we were never
generating imports for weak functions (even with the `import-functions`
policy for undefined symbols).  Adding a direct call to foo in the
`weak-undefined-pic.s` exposed a crash in the linker which this
change fixes.

Secondly we were failing to call `handleWeakUndefines` for the `-pie`
case which is PIC but doesn't set the undefined symbol policy to
`import-functions`.  With this change `-pie` binaries will by default
call `handleWeakUndefines` which generates the undefined stub handlers
for any weakly undefined symbols.

Fixes: https://github.com/emscripten-core/emscripten/issues/13337

Differential Revision: https://reviews.llvm.org/D95914
 		2021-02-11 17:16:03 -08:00
..
COFF Revert "[PDB] Defer relocating .debug$S until commit time and parallelize it" 2021-01-28 13:17:27 -08:00
Common [lld/mac] Add --reproduce option 2020-11-30 08:40:21 -05:00
ELF [ELF] Resolve defined symbols before undefined symbols 2021-02-11 09:41:46 -08:00
MachO [lld/mac] Implement -u flag 2021-02-09 08:23:06 -05:00
MinGW [LLD] [MinGW] Pass the --demangle and --no-demangle options to the COFF linker 2021-01-07 10:02:19 +02:00
cmake/modules lld: Let find_package(LLD) work 2020-05-14 09:59:53 -04:00
docs [ELF] Inspect -EL & -EB for OUTPUT_FORMAT(default, big, little) 2021-02-08 10:34:57 -08:00
include/lld [lld][WebAssembly] Common superclass for input globals/events/tables 2021-02-11 14:54:45 +01:00
lib [MachO] Fix enum-int mismatch warning 2020-12-28 17:39:41 +01:00
test [lld][WebAssembly] Fix for weak undefined functions in -pie mode 2021-02-11 17:16:03 -08:00
tools/lld lld: Fix darwinnew symlink name added in e16c0a9a68 2020-11-24 11:06:51 -05:00
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] Fix for weak undefined functions in -pie mode 2021-02-11 17:16:03 -08:00
.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 Revert "[CMake] Actually require python 3.6 or greater" 2021-01-29 12:03:32 -08:00
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.