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Peter Smith 3c73a41128 [ELF] Optimize Arm PLT sequences 
A more efficient PLT sequence can be used when the distance between the
.plt and the end of the .plt.got is less than 128 Megabytes, which is
frequently true. We fall back to the old sequence when the offset is larger
than 128 Megabytes. This gives us an alternative to forcing the longer
entries with --long-plt as we gracefully fall back to it as needed. 

See ELF for the ARM Architecture Appendix A for details of the PLT sequence.

Differential Revision: https://reviews.llvm.org/D41246

llvm-svn: 320987
 		2017-12-18 14:46:27 +00:00
..
COFF [COFF] Clean up debug option handling 2017-12-16 00:23:24 +00:00
Common Add a missing build dependency. 2017-12-14 22:31:29 +00:00
ELF [ELF] Optimize Arm PLT sequences 2017-12-18 14:46:27 +00:00
MinGW [MinGW] Ignore the --no-seh flag 2017-12-15 20:53:10 +00:00
cmake/modules [lld] Switch to add_llvm_install_targets 2017-12-01 04:17:45 +00:00
docs [docs] Update doc building instructions 2017-12-05 23:31:26 +00:00
include/lld Prefer `ArrayRef` over `const std::vector&` 2017-12-08 01:09:21 +00:00
lib MachONormalizedFile.h: Remove unimplemented function 2017-11-22 21:10:19 +00:00
test [ELF] Optimize Arm PLT sequences 2017-12-18 14:46:27 +00:00
tools/lld [CMake] Use PRIVATE in target_link_libraries for executables 2017-12-05 21:49:56 +00:00
unittests [CMake] Use PRIVATE in target_link_libraries for executables 2017-12-05 21:49:56 +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] Move code for copying of data segment relocation. NFC. 2017-12-17 17:52:01 +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 2016. 2016-03-30 22:40:59 +00:00
README.md [docs] Formatting-only change 2017-12-05 23:28:04 +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 69cff27cf63304a3f766e72dc9010407eced5c60635254a3c31496e1183ef9e1.