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Fangrui Song 1092fc9057 [ELF] Allow sh_entsize to be unrelated to sh_addralign and not a power of 2 
Summary:
This implements Rui Ueyama's idea in PR39044.
I've checked that ld.bfd and gold do not have the power-of-2 requirement
and do not require sh_entsize to be a multiple of sh_align.

Now on the updated test merge-entsize.s, all the 3 linkers happily
create .rodata that is not 3-byte aligned.

This has a use case in Linux arch/x86/crypto/sha512-avx2-asm.S
It uses sh_entsize of 640, which is not a power of 2.
See https://github.com/ClangBuiltLinux/linux/issues/417

Reviewers: ruiu, espindola

Reviewed By: ruiu

Subscribers: nickdesaulniers, E5ten, emaste, arichardson, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D59478

llvm-svn: 356428
 		2019-03-18 23:49:18 +00:00
..
COFF [DebugInfo][PDB] Don't write empty debug streams 2019-03-18 19:13:23 +00:00
Common Fail early if an output file is not writable 2019-03-11 16:30:55 +00:00
ELF [ELF] Allow sh_entsize to be unrelated to sh_addralign and not a power of 2 2019-03-18 23:49:18 +00:00
MinGW [MinGW] Hook up the --exclude-all-symbols option 2019-02-19 21:57:49 +00:00
cmake/modules [CMake] Properly conditionalize installation of lld libraries 2018-03-09 13:09:36 +00:00
docs Reland "[Remarks] Add -foptimization-record-passes to filter remark emission" 2019-03-12 21:22:27 +00:00
include/lld Fail early if an output file is not writable 2019-03-11 16:30:55 +00:00
lib Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
test [ELF] Allow sh_entsize to be unrelated to sh_addralign and not a power of 2 2019-03-18 23:49:18 +00:00
tools/lld Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
unittests Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
utils Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
wasm [WebAssembly] Error on R_WASM_MEMORY_ADDR relocations against undefined data symbols. 2019-03-16 01:18:12 +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 Fix typos throughout the license files that somehow I and my reviewers 2019-01-21 09:52:34 +00:00
README.md Note that the test .tar.xz has been updated. 2017-12-22 19:37:32 +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 10eec685463d5a8bbf08d77f4ca96282161d396c65bd97dc99dbde644a31610f.