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Mirror of https://github.com/RPCS3/llvm-mirror
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Rafael Espindola b90e1b4a20 Add r224985 back with two fixes. 
One is that AArch64 has additional restrictions on when local relocations can
be used. We have to take those into consideration when deciding to put a L
symbol in the symbol table or not.

The other is that ld64 requires the relocations to cstring to use linker
visible symbols on AArch64.

Thanks to Michael Zolotukhin for testing this!

Remove doesSectionRequireSymbols.

In an assembly expression like

bar:
.long L0 + 1

the intended semantics is that bar will contain a pointer one byte past L0.

In sections that are merged by content (strings, 4 byte constants, etc), a
single position in the section doesn't give the linker enough information.
For example, it would not be able to tell a relocation must point to the
end of a string, since that would look just like the start of the next.

The solution used in ELF to use relocation with symbols if there is a non-zero
addend.

In MachO before this patch we would just keep all symbols in some sections.

This would miss some cases (only cstrings on x86_64 were implemented) and was
inefficient since most relocations have an addend of 0 and can be represented
without the symbol.

This patch implements the non-zero addend logic for MachO too.

llvm-svn: 225644
2015-01-12 18:13:07 +00:00
autoconf [multilib] Add support to the autoconf build to substitute 2014-12-29 11:58:17 +00:00
bindings [OCaml] [cmake] Use LLVM_LIBRARY_DIR instead of LLVM_LIBRARY_OUTPUT_INTDIR. 2014-12-30 03:24:07 +00:00
cmake Reverting r225319; since there is a folder named Examples, attempting to add a target of the same name causes problems for IDEs like Visual Studio. 2015-01-07 14:47:12 +00:00
docs Fix silly mistake in release notes for Mips. 2015-01-11 10:48:20 +00:00
examples Manually specify the folder that Kaleidescope should reside in for CMake-produced solutions that care about such things (like MSVC). This takes the Kaleidescope target out of the root solution folder and places it into the Examples folder where it belongs. 2015-01-07 14:26:07 +00:00
include Add r224985 back with two fixes. 2015-01-12 18:13:07 +00:00
lib Add r224985 back with two fixes. 2015-01-12 18:13:07 +00:00
projects [cmake] Use the external project machinery for libcxxabi so that it can 2014-07-25 10:27:40 +00:00
test Add r224985 back with two fixes. 2015-01-12 18:13:07 +00:00
tools Use the DiagnosticHandler to print diagnostics when reading bitcode. 2015-01-10 00:07:30 +00:00
unittests ConvertUTFTest: fix misleading empty line 2015-01-10 05:03:29 +00:00
utils Add a new utility script that helps update very simple regression tests. 2015-01-12 04:43:18 +00:00
.arcconfig Updated phabricator server. 2014-04-07 03:57:04 +00:00
.clang-format Test commit. 2014-03-02 13:08:46 +00:00
.clang-tidy Enable display of compiler diagnostics in clang-tidy by default. 2014-10-29 17:29:38 +00:00
.gitignore .gitignore: add some rules for tagging programs 2015-01-10 19:11:29 +00:00
CMakeLists.txt [py3] Teach the CMake build to reject Python versions older than 2.7. 2014-12-29 19:36:05 +00:00
CODE_OWNERS.TXT Add myself as SystemZ code owner 2014-12-18 19:27:50 +00:00
configure [multilib] Add support to the autoconf build to substitute 2014-12-29 11:58:17 +00:00
CREDITS.TXT Rise from the dead and update personal info 2014-08-25 17:51:04 +00:00
LICENSE.TXT Remove projects/sample. 2014-03-12 22:40:22 +00:00
llvm.spec.in
LLVMBuild.txt Remove the very substantial, largely unmaintained legacy PGO 2013-10-02 15:42:23 +00:00
Makefile [configure/make] Propagate names of build host tools when making BuildTools 2014-03-25 21:45:41 +00:00
Makefile.common
Makefile.config.in Add a check for misbehaving -Wcomment from gcc-4.7 and add 2014-11-05 00:35:15 +00:00
Makefile.rules Add a check for misbehaving -Wcomment from gcc-4.7 and add 2014-11-05 00:35:15 +00:00
README.txt Test commit. 2015-01-07 22:07:33 +00:00

README.txt 

Low Level Virtual Machine (LLVM)
================================

This directory and its subdirectories contain source code for LLVM,
a toolkit for the construction of highly optimized compilers,
optimizers, and runtime environments.

LLVM is open source software. You may freely distribute it under the terms of
the license agreement found in LICENSE.txt.

Please see the documentation provided in docs/ for further
assistance with LLVM, and in particular docs/GettingStarted.rst for getting
started with LLVM and docs/README.txt for an overview of LLVM's
documentation setup.

If you're writing a package for LLVM, see docs/Packaging.rst for our
suggestions.