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Matthias Braun bac1dd9d54 ARM, AArch64, X86: Check preserved registers for tail calls. 
We can only perform a tail call to a callee that preserves all the
registers that the caller needs to preserve.

This situation happens with calling conventions like preserver_mostcc or
cxx_fast_tls. It was explicitely handled for fast_tls and failing for
preserve_most. This patch generalizes the check to any calling
convention.

Related to rdar://24207743

Differential Revision: http://reviews.llvm.org/D18680

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@265329 91177308-0d34-0410-b5e6-96231b3b80d8
2016-04-04 18:56:13 +00:00
bindings [OCaml] Use LLVMCreateMessage with constant strings when calling llvm_raise 2016-04-01 07:56:17 +00:00
cmake [CMake] Provide the ability to skip stripping when generating dSYMs 2016-03-31 20:03:19 +00:00
docs Document standard substitutions defined by lit. 2016-04-04 17:14:45 +00:00
examples [Kaleidoscope] Rename Error -> LogError in Chapters 2-5. 2016-03-25 17:41:26 +00:00
include ARM, AArch64, X86: Check preserved registers for tail calls. 2016-04-04 18:56:13 +00:00
lib ARM, AArch64, X86: Check preserved registers for tail calls. 2016-04-04 18:56:13 +00:00
projects Remove autoconf support 2016-01-26 21:29:08 +00:00
resources In MSVC builds embed a VERSIONINFO resource in our exe and DLL files. 2015-06-12 15:58:29 +00:00
test ARM, AArch64, X86: Check preserved registers for tail calls. 2016-04-04 18:56:13 +00:00
tools ValueMapper: Add support for seeding metadata with nullptr 2016-04-02 17:04:38 +00:00
unittests ValueMapper: Add support for seeding metadata with nullptr 2016-04-02 17:04:38 +00:00
utils lit: python3 compatibility fix 2016-03-31 23:08:55 +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 adding readability-identifier-naming to llvm clang-tidy configuration. 2015-12-08 17:44:51 +00:00
.gitignore Minor updates to gitignore so that symlinks are ignored in the projects dir. 2015-07-07 20:24:58 +00:00
CMakeLists.txt dos2unix CMakeLists.txt 2016-03-28 18:19:32 +00:00
CODE_OWNERS.TXT Update owners to reflect recent changes 2016-04-01 20:40:49 +00:00
configure Remove autoconf support 2016-01-26 21:29:08 +00:00
CREDITS.TXT [WebAssembly] Initial WebAssembly backend 2015-06-29 23:51:55 +00:00
LICENSE.TXT Update copyright year to 2016. 2016-03-30 22:41:06 +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 Revert previous test commit. 2016-01-04 19:13:29 +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.