Ahmed Bougacha 16a661561f [ARM] Emit clrex in the expanded cmpxchg fail block. ... ARM counterpart to r248291: In the comparison failure block of a cmpxchg expansion, the initial ldrex/ldxr will not be followed by a matching strex/stxr. On ARM/AArch64, this unnecessarily ties up the execution monitor, which might have a negative performance impact on some uarchs. Instead, release the monitor in the failure block. The clrex instruction was designed for this: use it. Also see ARMARM v8-A B2.10.2: "Exclusive access instructions and Shareable memory locations". Differential Revision: http://reviews.llvm.org/D13033 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@248294 91177308-0d34-0410-b5e6-96231b3b80d8		2015-09-22 17:22:58 +00:00
..
Analysis	Untabify.	2015-09-22 11:15:07 +00:00
AsmParser	auto and range-for-ify some things to make changing container types a bit easier in the (possibly near) future	2015-09-21 21:07:50 +00:00
Bitcode	Silencing a -Wsign-compare warning; NFC.	2015-09-18 13:31:42 +00:00
CodeGen	[AArch64] Emit clrex in the expanded cmpxchg fail block.	2015-09-22 17:21:44 +00:00
DebugInfo	Use makeArrayRef or None to avoid unnecessarily mentioning the ArrayRef type extra times. NFC	2015-09-21 05:32:41 +00:00
ExecutionEngine	Remove roundingMode argument in APFloat::mod	2015-09-21 19:29:25 +00:00
Fuzzer	[libFuzzer] perform fewer crossover operations compared to plain mutations	2015-09-11 00:20:58 +00:00
IR	Remove roundingMode argument in APFloat::mod	2015-09-21 19:29:25 +00:00
IRReader	Return a unique_ptr from getLazyBitcodeModule and parseBitcodeFile. NFC.	2015-06-16 22:27:55 +00:00
LibDriver	There is only one saver of strings.	2015-08-13 01:07:02 +00:00
LineEditor	Use ADDITIONAL_HEADER_DIRS in all LLVM CMake projects.	2015-02-11 03:28:02 +00:00
Linker	[opaque pointer types] Switch a few cases of getElementType over, since I had them lying around anyway	2015-09-14 20:29:26 +00:00
LTO	Reapply "LTO: Disable extra verify runs in release builds"	2015-09-15 23:05:59 +00:00
MC	Untabify.	2015-09-22 11:15:07 +00:00
Object	Prune trailing whitespaces.	2015-09-22 11:19:03 +00:00
Option	Add an ArgList::AddAllArgs that accepts a vector of OptSpecifier.	2015-07-29 17:34:41 +00:00
Passes	[PM] Port SROA to the new pass manager.	2015-09-12 09:09:14 +00:00
ProfileData	GCC AutoFDO profile reader - Initial support.	2015-09-17 00:17:24 +00:00
Support	Untabify.	2015-09-22 11:15:07 +00:00
TableGen	TableGen: Support folding casts from bits to int	2015-07-31 01:12:06 +00:00
Target	[ARM] Emit clrex in the expanded cmpxchg fail block.	2015-09-22 17:22:58 +00:00
Transforms	Prune trailing whitespaces.	2015-09-22 11:19:03 +00:00
CMakeLists.txt	LibDriver, llvm-lib: introduce.	2015-06-09 21:50:22 +00:00
LLVMBuild.txt	Wrap some long lines in LLVMBuild files. NFC	2015-06-12 18:44:57 +00:00
Makefile	LibDriver, llvm-lib: introduce.	2015-06-09 21:50:22 +00:00