Saleem Abdulrasool 5335b49f96 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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212956 91177308-0d34-0410-b5e6-96231b3b80d8		2014-07-14 16:28:13 +00:00
..
Analysis	Templatify DominanceFrontier.	2014-07-12 21:59:52 +00:00
AsmParser	Update the MemoryBuffer API to use ErrorOr.	2014-07-06 17:43:13 +00:00
Bitcode	Fix a bug in the conversion to ErrorOr.	2014-07-04 20:05:56 +00:00
CodeGen	CodeGen: add missing include	2014-07-14 16:28:09 +00:00
DebugInfo	Revert "Introduce a string_ostream string builder facilty"	2014-06-26 22:52:05 +00:00
ExecutionEngine	[RuntimeDyld] Fix stub size and offset for AArch64 in RuntimeDyldMachO.h.	2014-07-12 00:16:47 +00:00
IR	IR: Allow comdats to be applied to globals with internal linkage	2014-07-13 04:56:11 +00:00
IRReader	Update the MemoryBuffer API to use ErrorOr.	2014-07-06 17:43:13 +00:00
LineEditor
Linker	Include <tuple> to make buildbots happy	2014-06-27 18:38:12 +00:00
LTO	Update the MemoryBuffer API to use ErrorOr.	2014-07-06 17:43:13 +00:00
MC	MC: make MCWin64EHInstruction a POD-like struct	2014-07-13 19:03:45 +00:00
Object	Object/LLVMBuild.txt: Sort required_libraries by alphabetical order.	2014-07-14 02:52:08 +00:00
Option	Generic: add range-adapter for option parsing.	2014-07-09 13:03:37 +00:00
ProfileData	Update the MemoryBuffer API to use ErrorOr.	2014-07-06 17:43:13 +00:00
Support	Move the API and implementation of clang::driver::getARMCPUForMArch() to llvm::Triple::getARMCPUForArch().	2014-07-11 21:44:54 +00:00
TableGen	Update the MemoryBuffer API to use ErrorOr.	2014-07-06 17:43:13 +00:00
Target	X86: correct 64-bit atomics on 32-bit	2014-07-14 16:28:13 +00:00
Transforms	[CMake] Add LLVM_LINK_COMPONENTS to loadable modules, LLVMHello and BugpointPasses, on Win32.	2014-07-13 13:36:48 +00:00
CMakeLists.txt
LLVMBuild.txt
Makefile