Richard Sandiford aedb288d86 Add TargetLowering::prepareVolatileOrAtomicLoad ... One unusual feature of the z architecture is that the result of a previous load can be reused indefinitely for subsequent loads, even if a cache-coherent store to that location is performed by another CPU. A special serializing instruction must be used if you want to force a load to be reattempted. Since volatile loads are not supposed to be omitted in this way, we should insert a serializing instruction before each such load. The same goes for atomic loads. The patch implements this at the IR->DAG boundary, in a similar way to atomic fences. It is a no-op for targets other than SystemZ. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196906 91177308-0d34-0410-b5e6-96231b3b80d8		2013-12-10 10:49:34 +00:00
..
Analysis	Don't #include heavy Dominators.h file in LoopInfo.h. This change reduces	2013-12-07 21:20:17 +00:00
AsmParser	Debug Info: drop debug info via upgrading path if version number does not match.	2013-12-02 21:29:56 +00:00
Bitcode	Remove unused value.	2013-12-07 02:27:52 +00:00
CodeGen	Add TargetLowering::prepareVolatileOrAtomicLoad	2013-12-10 10:36:34 +00:00
DebugInfo
ExecutionEngine	Whitespace cleanups.	2013-12-07 11:21:42 +00:00
IR	GCOV.cpp: Use PRIu64 instead of %lu.	2013-12-10 05:39:40 +00:00
IRReader
Linker
LTO	Add proper dependencies to LLVMBuild.txt in llvm/lib.	2013-12-10 05:39:34 +00:00
MC	Revert "Fix miscompile of MS inline assembly with stack realignment"	2013-12-10 05:31:27 +00:00
Object	Fix a pair of array index checks.	2013-12-06 02:33:38 +00:00
Option	Avoid buffer copies when a Twine already is a StringRef.	2013-12-03 18:18:28 +00:00
Support	Improve the detection of the path	2013-12-09 16:27:00 +00:00
TableGen
Target	Add TargetLowering::prepareVolatileOrAtomicLoad	2013-12-10 10:49:34 +00:00
Transforms	Add proper dependencies to LLVMBuild.txt in llvm/lib.	2013-12-10 05:39:34 +00:00
CMakeLists.txt
LLVMBuild.txt
Makefile