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Mirror of https://github.com/RPCS3/llvm-mirror
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Evgeniy Stepanov 74dd9de11e [cfi] Implement cfi-icall using inline assembly. 
The current implementation is emitting a global constant that happens
to evaluate to the same bytes + relocation as a jump instruction on
X86. This does not work for PIE executables and shared libraries
though, because we end up with a wrong relocation type. And it has no
chance of working on ARM/AArch64 which use different relocation types
for jump instructions (R_ARM_JUMP24) that is never generated for
data.

This change replaces the constant with module-level inline assembly
followed by a hidden declaration of the jump table. Works fine for
ARM/AArch64, but has some drawbacks.
* Extra symbols are added to the static symbol table, which inflate
the size of the unstripped binary a little. Stripped binaries are not
affected. This happens because jump table declarations must be
external (because their body is in the inline asm).
* Original functions that were anonymous are now named
<original name>.cfi, and it affects symbolization sometimes. This is
necessary because the only user of these functions is the (inline
asm) jump table, so they had to be added to @llvm.used, which does
not allow unnamed functions.

llvm-svn: 286611
2016-11-11 18:49:09 +00:00
bindings Remove Go Attribute type that was deleted from the C API in r286062. 2016-11-07 18:38:49 +00:00
cmake CMake: make LLVM_OPTIMIZED_TABLEGEN friendly with LLVM_EXTERNAL_CLANG_SOURCE_DIR 2016-11-11 04:27:59 +00:00
docs IR: Introduce inrange attribute on getelementptr indices. 2016-11-10 22:34:55 +00:00
examples Fix examples files to reflect header split in r286566. 2016-11-11 06:02:04 +00:00
include Fix comments according to the LLVM coding guidelines. 2016-11-11 18:22:51 +00:00
lib [cfi] Implement cfi-icall using inline assembly. 2016-11-11 18:49:09 +00:00
projects [CMake] Correct configuration order of the sub-projects based on ther dependancies 2016-10-09 20:38:29 +00:00
resources In MSVC builds embed a VERSIONINFO resource in our exe and DLL files. 2015-06-12 15:58:29 +00:00
runtimes [CMake] Make the runtimes directory work with bootstrap builds 2016-10-19 21:50:25 +00:00
test [cfi] Implement cfi-icall using inline assembly. 2016-11-11 18:49:09 +00:00
tools Clean up DWARFFormValue by reducing duplicated code and removing DWARFFormValue::getFixedFormSizes() 2016-11-11 16:21:37 +00:00
unittests Clean up DWARFFormValue by reducing duplicated code and removing DWARFFormValue::getFixedFormSizes() 2016-11-11 16:21:37 +00:00
utils [opt-viewer] Make it work in the absence of hotness information 2016-11-11 06:11:56 +00:00
.arcconfig project_id is from another era in phabricator land and does not provide any value. 2016-09-27 15:47:29 +00:00
.clang-format Test commit. 2014-03-02 13:08:46 +00:00
.clang-tidy .clang-tidy: correct style name is 'camelBack' not 'lowerCase'. 2016-09-13 19:04:26 +00:00
.gitignore gitignore: ignore VS Code editor files 2016-09-02 22:54:26 +00:00
CMakeLists.txt [cmake] Fix handling compiler-rt in LLVM_ENABLE_PROJECTS by turning any "-" into "_" 2016-11-09 00:23:20 +00:00
CODE_OWNERS.TXT CODE_OWNERS: Take ownership of the loop vectorizer. 2016-11-08 18:44:40 +00:00
configure Remove autoconf support 2016-01-26 21:29:08 +00:00
CREDITS.TXT Test Commit, removed extraneous newline 2016-11-01 17:54:05 +00:00
LICENSE.TXT Remove autoconf references from LICENSE.TXT 2016-08-12 20:11:03 +00:00
llvm.spec.in [Sparc] Implement i64 load/store support for 32-bit sparc. 2015-08-10 19:11:39 +00:00
LLVMBuild.txt Remove the very substantial, largely unmaintained legacy PGO 2013-10-02 15:42:23 +00:00
README.txt Test commit, deleted empty line at the end of README.txt 2016-11-07 18:31:21 +00:00
RELEASE_TESTERS.TXT Adding RELEASE_TESTERS.TXT 2016-07-21 16:46:44 +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 are writing a package for LLVM, see docs/Packaging.rst for our
suggestions.