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llvm-project/lld
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Andrew Ng 863aa0a37b [LLD][ELF] Fix performance of MarkLive::scanEhFrameSection 
MarkLive::scanEhFrameSection is used to retain personality/LSDA
functions when --gc-sections is enabled.

Improve its performance by only iterating over the .eh_frame relocations
that need to be resolved for an EhSectionPiece. This optimization makes
the same assumption as elsewhere in LLD that the .eh_frame relocations
are sorted by r_offset.

This appears to be a performance regression introduced in commit
e6c24299d2 (https://reviews.llvm.org/D59800).

This change has been seen to reduce link time by up to ~50%.

Differential Revision: https://reviews.llvm.org/D87245
 		2020-09-08 19:32:34 +01:00
..
COFF [LLD] [COFF] Error out if creating a DLL with too many exported symbols 2020-08-31 21:15:13 +03:00
Common lld: link libatomic if needed for Timer 2020-08-21 17:47:55 -07:00
ELF [LLD][ELF] Fix performance of MarkLive::scanEhFrameSection 2020-09-08 19:32:34 +01:00
MachO [lld-macho][NFC] Define isHidden() in LinkEditSection 2020-08-27 17:44:18 -07:00
MinGW [LLD] [MinGW] Enable dynamicbase by default 2020-08-27 15:08:53 +03:00
cmake/modules lld: Let find_package(LLD) work 2020-05-14 09:59:53 -04:00
docs [ELF] Keep st_type for symbol assignment 2020-08-20 16:05:27 -07:00
include/lld [lld-macho] Implement -headerpad 2020-07-30 14:29:31 -07:00
lib [CMake] Make `intrinsics_gen` dependency unconditional. 2020-07-17 16:43:17 -07:00
test [ELF] Handle SHT_RISCV_ATTRIBUTES similarly to SHT_ARM_ATTRIBUTES 2020-09-05 18:36:23 +01:00
tools/lld Reland D78837 [lld] Remove special cases from default ld driver mode. 2020-04-29 14:45:44 -07:00
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 Python 2/3 compatibility 2019-03-20 07:42:13 +00:00
wasm [lld][WebAssembly] Emit all return types of multivalue functions 2020-08-12 13:14:15 -07:00
.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 [CMake] Remove dead FindPythonInterp code 2020-09-08 15:23:23 +03:00
CODE_OWNERS.TXT Add code owners of new MachO port 2020-09-02 19:32:12 -07:00
LICENSE.TXT
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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.