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Alexander Richardson 6b367faa45 [ELF] Make overlapping output sections an error 
Summary:
While trying to make a linker script behave the same way with lld as it did
with bfd, I discovered that lld currently doesn't diagnose overlapping
output sections. I was getting very strange runtime failures which I
tracked down to overlapping sections in the resulting binary. When linking
with ld.bfd overlapping output sections are an error unless
--noinhibit-exec is passed and I believe lld should behave the same way
here to avoid surprising crashes at runtime.

The patch also uncovered an errors in the tests: arm-thumb-interwork-thunk
was creating a binary where .got.plt was placed at an address overlapping
with .got.

Reviewers: ruiu, grimar, rafael

Reviewed By: ruiu

Differential Revision: https://reviews.llvm.org/D41046

llvm-svn: 323856
 		2018-01-31 09:22:44 +00:00
..
COFF [COFF] Remove the temporary file if not updating the import library 2018-01-30 07:26:01 +00:00
Common Pass CPU string to LTO pipeline. 2018-01-30 18:18:59 +00:00
ELF [ELF] Make overlapping output sections an error 2018-01-31 09:22:44 +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, release notes: update version to 7.0.0 2018-01-03 15:51:31 +00:00
include/lld Pass CPU string to LTO pipeline. 2018-01-30 18:18:59 +00:00
lib [YAML] Fix mustQuote return type changed in r320996 2017-12-18 17:49:27 +00:00
test [ELF] Make overlapping output sections an error 2018-01-31 09:22:44 +00:00
tools/lld Update a help message. 2018-01-29 21:48:40 +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] Add support for --gc-sections 2018-01-31 01:45:47 +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
…
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.