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Fangrui Song a05384dc89 [ELF] Make --no-relax disable R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX GOT optimization 
This brings back the original version of D81359.
I have found several use cases now.

* Unlike GNU ld, LLD's relocation processing is one pass. If we decide to
  optimize(relax) R_X86_64_{,REX_}GOTPCRELX, we will suppress GOT generation and
  cannot undo the decision later. Optimizing R_X86_64_REX_GOTPCRELX can usually
  make it easy to hit `relocation R_X86_64_REX_GOTPCRELX out of range` because
  the distance to GOT is usually shorter. Without --no-relax, the user has to
  recompile with `-Wa,-mrelax-relocations=no`.
* The option would help during my investigationg of the root cause of https://git.kernel.org/linus/09e43968db40c33a73e9ddbfd937f46d5c334924
* There is need for relaxation for AArch64 & RISC-V. Implementing this for
  x86-64 improves consistency with little target-specific cost (two-line
  X86_64.cpp change).

Reviewed By: alexander-shaposhnikov

Differential Revision: https://reviews.llvm.org/D113615
 		2021-11-12 09:47:31 -08:00
..
COFF [Support] Improve Caching conformance with Support library behavior 2021-11-04 13:00:44 -07:00
Common [lld/mac] Write -v output to stderr 2021-11-02 13:59:14 -04:00
ELF [ELF] Make --no-relax disable R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX GOT optimization 2021-11-12 09:47:31 -08:00
MachO Revert "[lld-macho] Fix symbol relocs handling for compact unwind's functionAddress" 2021-11-11 20:29:48 -08:00
MinGW [LLD] [MinGW] Add more options for disabling flags in the executable 2021-08-12 13:27:09 +03:00
cmake/modules [cmake] Add support for multiple distributions 2021-05-12 11:13:18 -07:00
docs [ELF] Make --no-relax disable R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX GOT optimization 2021-11-12 09:47:31 -08:00
include/lld [lld/mac] Write -v output to stderr 2021-11-02 13:59:14 -04:00
lib Use llvm::erase_if (NFC) 2021-10-18 09:33:42 -07:00
test [ELF] Make --no-relax disable R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX GOT optimization 2021-11-12 09:47:31 -08:00
tools/lld [lld] Enable ANSI escape code for Windows 2021-09-09 16:51:11 -07:00
unittests [CMake][gn] lldMachO=>lldMachOOld, lldMachO2=>lldMachO 2021-08-04 18:52:41 -07:00
utils
…
wasm [NFC] Inclusive language: Remove instances of master in URLs 2021-11-05 08:48:41 -05:00
.clang-format
…
.clang-tidy NFC: .clang-tidy: Inherit configs from parents to improve maintainability 2021-06-08 08:25:59 -07:00
.gitignore
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CMakeLists.txt [LLVM][CMake][NFC] Resolve FIXME: Rename LLVM_CMAKE_PATH to LLVM_CMAKE_DIR throughout the project 2021-09-16 18:29:57 +02:00
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.