llvm-project/lld
Daniel Bertalan a8ec90ad9c
[lld-macho] Simplify linker optimization hint processing
This commit removes the `relocTargets` vector, and instead makes the
code reconstruct the referent addresses from the relocated instructions.
This will allow us to move `applyOptimizationHints` from
`ConcatInputSection::writeTo` to a separate pass that parses and applies
LOHs in one step, on a per-file basis. This will improve performance, as
parsing is currently done serially in `ObjFile::parse`.

I opted to remove the sanity check that ensures that all relocations
within a LOH point to the same symbol. This completely eliminates the
need to search through relocations. It is my understanding that
mismatched relocation targets should not be present in valid object
files, so it's unlikely that the removal will lead to mislinks.

Differential Revision: https://reviews.llvm.org/D133274
2022-09-06 08:19:08 +02:00
..
COFF Use llvm::lower_bound (NFC) 2022-09-03 11:17:37 -07:00
Common [lld] Change vector to SmallVector. NFC 2022-07-30 18:11:21 -07:00
ELF [ELF] Provide the GNU hash function in libObject 2022-09-05 11:04:57 -05:00
MachO [lld-macho] Simplify linker optimization hint processing 2022-09-06 08:19:08 +02:00
MinGW [LLD] [MinGW] Implement the --exclude-symbols option 2022-08-11 11:59:47 +03:00
cmake/modules Revert "[CMake] Avoid `LLVM_BINARY_DIR` when other more specific variable are better-suited" 2022-08-25 11:13:46 -04:00
docs [docs] Remove lld/ELF release note about --package-metadata= which is in release/15.x 2022-08-19 19:08:29 -07:00
include/lld/Common [ELF] Add makeThreadLocal/makeThreadLocalN and remove InputFile::localSymStorage 2022-08-04 11:09:40 -07:00
test [lld-macho] Simplify linker optimization hint processing 2022-09-06 08:19:08 +02:00
tools/lld [LLD][ELF] Add FORCE_LLD_DIAGNOSTICS_CRASH to force LLD to crash 2022-07-05 09:43:09 +01:00
utils
wasm Use llvm::count_if (NFC) 2022-09-03 11:17:35 -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 Revert "[cmake] Use `CMAKE_INSTALL_LIBDIR` too" 2022-08-18 22:46:32 -04:00
CODE_OWNERS.TXT
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.