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llvm-capstone/lld
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Sean Fertile a010cf615a [PPC64] Sort .toc sections accessed with small code model relocs close to .got. 
Small code model global variable access on PPC64 has a very limited range of
addressing. The instructions the relocations are used on add an offset in the
range [-0x8000, 0x7FFC] to the toc pointer which points to .got +0x8000, giving
an addressable range of [.got, .got + 0xFFFC]. While user code can be recompiled
with medium and large code models when the binary grows too large for small code
model, there are small code model relocations in the crt files and libgcc.a
which are typically shipped with the distros, and the ABI dictates that linkers
must allow linking of relocatable object files using different code models.

To minimze the chance of relocation overflow, any file that contains a small
code model relocation should have its .toc section placed closer to the .got
then any .toc from a file without small code model relocations.

Differential Revision: https://reviews.llvm.org/D56920

llvm-svn: 351978
2019-01-23 21:04:03 +00:00
..
cmake/modules
COFF lld-link: Use just one code path to process associative comdats, reject some invalid associated comdats 2019-01-23 02:07:10 +00:00
Common Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
docs Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
ELF [PPC64] Sort .toc sections accessed with small code model relocs close to .got. 2019-01-23 21:04:03 +00:00
include/lld Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
lib Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
MinGW Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
test [PPC64] Sort .toc sections accessed with small code model relocs close to .got. 2019-01-23 21:04:03 +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 Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
.arcconfig
.clang-format
.gitignore
CMakeLists.txt
CODE_OWNERS.TXT
LICENSE.TXT Fix typos throughout the license files that somehow I and my reviewers 2019-01-21 09:52:34 +00:00
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.