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Saleem Abdulrasool 6f4137a9fc X86: correct 64-bit atomics on 32-bit 
We would emit a libcall for a 64-bit atomic on x86 after SVN r212119.  This was
due to the misuse of hasCmpxchg16 to indicate if cmpxchg8b was supported on a
32-bit target.  They were added at different times and would result in the
border condition being mishandled.

This fixes the border case to emit the cmpxchg8b instruction for 64-bit atomic
operations on x86 at the cost of restoring a long-standing bug in the codegen.
We emit a cmpxchg8b on all x86 targets even where the CPU does not support this
instruction (pre-Pentium CPUs).  Although this bug should be fixed, this was
present prior to SVN r212119 and this change, so this is not really introducing
a regression.

llvm-svn: 212956
2014-07-14 16:28:13 +00:00
autoconf Remove path_tclsh.m4. 2014-06-02 12:54:32 +00:00
bindings [OCaml] Documentation improvements. 2014-07-02 22:17:20 +00:00
cmake [CMake][Win32.DLL] Let llvm_add_library(SHARED) link dependent libraries as PRIVATE. 2014-07-14 12:26:15 +00:00
docs Add FileCheck -implicit-check-not option to allow stricter tests without adding too many CHECK-NOTs manually. 2014-07-11 12:39:32 +00:00
examples [CMake] Update libdeps. 2014-07-14 05:01:53 +00:00
include MC: make MCWin64EHInstruction a POD-like struct 2014-07-13 19:03:45 +00:00
lib X86: correct 64-bit atomics on 32-bit 2014-07-14 16:28:13 +00:00
projects
test X86: correct 64-bit atomics on 32-bit 2014-07-14 16:28:13 +00:00
tools llvm-objdump: Handle BSS sections larger than the object file 2014-07-14 16:20:14 +00:00
unittests [CMake] Update libdeps. 2014-07-14 05:01:53 +00:00
utils Option: Propagate flags from groups to options in each group 2014-07-12 00:18:58 +00:00
.arcconfig Updated phabricator server. 2014-04-07 03:57:04 +00:00
.clang-format
.gitignore Add Polly to the ignored trees. 2014-06-25 13:13:36 +00:00
CMakeLists.txt [CMake] Introduce LLVM_SHLIB_OUTPUT_INTDIR. 2014-07-04 04:23:26 +00:00
CODE_OWNERS.TXT ARM Linux support 2014-04-02 23:03:28 +00:00
configure Touch configure to force clang's config.h.in reconfiguration on the build servers 2014-06-06 10:36:38 +00:00
CREDITS.TXT Update Credits. 2014-05-29 19:59:58 +00:00
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt
Makefile
Makefile.common
Makefile.config.in
Makefile.rules [Make] Fix dependencies for td.expanded 2014-06-20 19:00:41 +00:00
README.txt Trivial test commit. 2014-04-26 19:05:45 +00:00

README.txt 

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

This directory and its subdirectories contain source code for the Low Level
Virtual Machine, 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.