llvm-project/lld
Nico Weber 0f24ffcdfa [lld/mac] Don't fold UNWIND_X86_64_MODE_STACK_IND unwind entries
libunwind uses unwind info to find the function address belonging
to the current instruction pointer. libunwind/src/CompactUnwinder.hpp's
step functions read functionStart for UNWIND_X86_64_MODE_STACK_IND
(and for nothing else), so these encodings need a dedicated entry
per function, so that the runtime can get the stacksize off the
`subq` instrunction in the function's prologue.

This matches ld64.

(CompactUnwinder.hpp from https://opensource.apple.com/source/libunwind/
also reads functionStart in a few more cases if `SUPPORT_OLD_BINARIES` is set,
but it defaults to 0, and ld64 seems to not worry about these additional
cases.)

Related upstream bug: https://crbug.com/1220175

Differential Revision: https://reviews.llvm.org/D104978
2021-06-27 06:49:32 -04:00
..
COFF [LLD] [COFF] Fix handling of LTO comdats with nontrivial selection types after 728cc0075e 2021-06-25 09:39:56 +03:00
Common [lld] Rename StringRef _lower() method calls to _insensitive() 2021-06-25 00:22:01 +03:00
ELF [ELF] --sysroot: change sysrooted script to not fall back for an absolute path 2021-06-25 12:52:39 -07:00
MachO [lld/mac] Don't fold UNWIND_X86_64_MODE_STACK_IND unwind entries 2021-06-27 06:49:32 -04:00
MinGW [OptTable] Rename PrintHelp to printHelp 2021-06-24 14:47:03 -07:00
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 [WebAssembly] Rename event to tag 2021-06-17 20:34:19 -07:00
lib [OptTable] Rename PrintHelp to printHelp 2021-06-24 14:47:03 -07:00
test [lld/mac] Don't fold UNWIND_X86_64_MODE_STACK_IND unwind entries 2021-06-27 06:49:32 -04:00
tools/lld [lld] Rename StringRef _lower() method calls to _insensitive() 2021-06-25 00:22:01 +03:00
unittests
utils
wasm [OptTable] Rename PrintHelp to printHelp 2021-06-24 14:47:03 -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
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.