Evan Cheng 4784f1fc73 Add a bit IsUndef to MachineOperand. This indicates the def / use register operand is defined by an implicit_def. That means it can def / use any register and passes (e.g. register scavenger) can feel free to ignore them. ... The register allocator, when it allocates a register to a virtual register defined by an implicit_def, can allocate any physical register without worrying about overlapping live ranges. It should mark all of operands of the said virtual register so later passes will do the right thing. This is not the best solution. But it should be a lot less fragile to having the scavenger try to track what is defined by implicit_def. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74518 91177308-0d34-0410-b5e6-96231b3b80d8		2009-06-30 08:49:04 +00:00
..
CallingConvLower.cpp
CMakeLists.txt	Update for CMakeLists; untested, so tell me if there are issues.	2009-05-24 09:13:13 +00:00
DAGCombiner.cpp	Adapt the x86 build_vector dagcombine to the current state of the legalizer.	2009-06-05 21:37:30 +00:00
FastISel.cpp	mv CodeGen/DebugLoc.h Support/DebugLoc.h	2009-06-19 22:08:58 +00:00
LegalizeDAG.cpp	This increases the maximum for MVT::LAST_VALUETYPE	2009-06-24 19:41:55 +00:00
LegalizeFloatTypes.cpp	Rename CustomLowerResults to CustomLowerNode, since	2009-05-31 04:15:38 +00:00
LegalizeIntegerTypes.cpp	Allow libcalls for i16 sdiv/udiv/rem operations.	2009-06-05 14:41:10 +00:00
LegalizeTypes.cpp	Rename CustomLowerResults to CustomLowerNode, since	2009-05-31 04:15:38 +00:00
LegalizeTypes.h	This increases the maximum for MVT::LAST_VALUETYPE	2009-06-24 19:41:55 +00:00
LegalizeTypesGeneric.cpp	Minor cleanup; fixes review comments for a previous patch. Sorry for	2009-06-19 06:01:55 +00:00
LegalizeVectorOps.cpp	Make SINT_TO_FP/UINT_TO_FP vector legalization queries query on the	2009-06-06 03:27:50 +00:00
LegalizeVectorTypes.cpp
Makefile	remove dead makefile flags.	2009-06-24 05:29:56 +00:00
ScheduleDAGFast.cpp
ScheduleDAGList.cpp
ScheduleDAGRRList.cpp
ScheduleDAGSDNodes.cpp	Revert 72707 and 72709, for the moment.	2009-06-02 03:12:52 +00:00
ScheduleDAGSDNodes.h
ScheduleDAGSDNodesEmit.cpp	Add a bit IsUndef to MachineOperand. This indicates the def / use register operand is defined by an implicit_def. That means it can def / use any register and passes (e.g. register scavenger) can feel free to ignore them.	2009-06-30 08:49:04 +00:00
SelectionDAG.cpp	fix a typo that GCC should have caught that causes crashes with -view-*-dags	2009-06-27 00:57:02 +00:00
SelectionDAGBuild.cpp	Change this from an assert to a cerr+exit, since it's diagnosing an	2009-06-15 22:32:41 +00:00
SelectionDAGBuild.h	Split the Add, Sub, and Mul instruction opcodes into separate	2009-06-04 22:49:04 +00:00
SelectionDAGISel.cpp	Add a new step to legalization to legalize vector math operations. This	2009-05-23 12:35:30 +00:00
SelectionDAGPrinter.cpp	implement DOTGraphTraits<SelectionDAG*>::getNodeLabel in terms of	2009-06-26 19:06:10 +00:00
TargetLowering.cpp	This increases the maximum for MVT::LAST_VALUETYPE	2009-06-24 19:41:55 +00:00