Richard Sandiford 8c20158fb0 [SystemZ] Use SRST to optimize memchr ... SystemZTargetLowering::emitStringWrapper() previously loaded the character into R0 before the loop and made R0 live on entry. I'd forgotten that allocatable registers weren't allowed to be live across blocks at this stage, and it confused LiveVariables enough to cause a miscompilation of f3 in memchr-02.ll. This patch instead loads R0 in the loop and leaves LICM to hoist it after RA. This is actually what I'd tried originally, but I went for the manual optimisation after noticing that R0 often wasn't being hoisted. This bug forced me to go back and look at why, now fixed as r188774. We should also try to optimize null checks so that they test the CC result of the SRST directly. The select between null and the SRST GPR result could then usually be deleted as dead. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188779 91177308-0d34-0410-b5e6-96231b3b80d8		2013-08-20 09:38:48 +00:00
..
CMakeLists.txt
DAGCombiner.cpp	Replace getValueType().getSimpleVT() with getSimpleValueType().	2013-08-15 02:44:19 +00:00
FastISel.cpp
FunctionLoweringInfo.cpp
InstrEmitter.cpp
InstrEmitter.h
LegalizeDAG.cpp	Replace getValueType().getSimpleVT() with getSimpleValueType().	2013-08-15 02:44:19 +00:00
LegalizeFloatTypes.cpp	Add ExpandFloatOp_FCOPYSIGN to handle ppcf128-related expansions	2013-08-19 06:55:37 +00:00
LegalizeIntegerTypes.cpp	Update makeLibCall to return both the call and the chain associated with the libcall instead of just the call. This allows us to specify libcalls that return void.	2013-08-13 17:54:56 +00:00
LegalizeTypes.cpp	Update makeLibCall to return both the call and the chain associated with the libcall instead of just the call. This allows us to specify libcalls that return void.	2013-08-13 17:54:56 +00:00
LegalizeTypes.h	Improve the widening of integral binary vector operations	2013-08-19 20:01:35 +00:00
LegalizeTypesGeneric.cpp
LegalizeVectorOps.cpp	Add a llvm.copysign intrinsic	2013-08-19 23:35:46 +00:00
LegalizeVectorTypes.cpp	Add a llvm.copysign intrinsic	2013-08-19 23:35:46 +00:00
LLVMBuild.txt
Makefile
ResourcePriorityQueue.cpp
ScheduleDAGFast.cpp
ScheduleDAGRRList.cpp
ScheduleDAGSDNodes.cpp
ScheduleDAGSDNodes.h
ScheduleDAGVLIW.cpp
SDNodeDbgValue.h
SelectionDAG.cpp	Replace getValueType().getSimpleVT() with getSimpleValueType().	2013-08-15 02:44:19 +00:00
SelectionDAGBuilder.cpp	[SystemZ] Use SRST to optimize memchr	2013-08-20 09:38:48 +00:00
SelectionDAGBuilder.h	[SystemZ] Use SRST to optimize memchr	2013-08-20 09:38:48 +00:00
SelectionDAGDumper.cpp
SelectionDAGISel.cpp	Remove unused variables that crept in.	2013-08-20 07:17:27 +00:00
SelectionDAGPrinter.cpp
TargetLowering.cpp	Update makeLibCall to return both the call and the chain associated with the libcall instead of just the call. This allows us to specify libcalls that return void.	2013-08-13 17:54:56 +00:00
TargetSelectionDAGInfo.cpp