Duncan Sands f9516208e5 Revert the SelectionDAG optimization that makes ... it impossible to create a MERGE_VALUES node with only one result: sometimes it is useful to be able to create a node with only one result out of one of the results of a node with more than one result, for example because the new node will eventually be used to replace a one-result node using ReplaceAllUsesWith, cf X86TargetLowering::ExpandFP_TO_SINT. On the other hand, most users of MERGE_VALUES don't need this and for them the optimization was valuable. So add a new utility method getMergeValues for creating MERGE_VALUES nodes which by default performs the optimization. Change almost everywhere to use getMergeValues (and tidy some stuff up at the same time). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52893 91177308-0d34-0410-b5e6-96231b3b80d8		2008-06-30 10:19:09 +00:00
..
CallingConvLower.cpp	Wrap MVT::ValueType in a struct to get type safety	2008-06-06 12:08:01 +00:00
DAGCombiner.cpp	When folding a bitcast into a load or store, preserve the alignment	2008-06-28 00:45:22 +00:00
LegalizeDAG.cpp	Revert the SelectionDAG optimization that makes	2008-06-30 10:19:09 +00:00
LegalizeFloatTypes.cpp	Add support for expanding PPC 128 bit floats.	2008-06-25 20:24:48 +00:00
LegalizeIntegerTypes.cpp	Add/complete support for integer and float	2008-06-25 16:34:21 +00:00
LegalizeTypes.cpp	Share some code that is common between integer and	2008-06-20 18:40:50 +00:00
LegalizeTypes.h	Add support for expanding PPC 128 bit floats.	2008-06-25 20:24:48 +00:00
LegalizeTypesGeneric.cpp	Support for expanding the result of EXTRACT_ELEMENT.	2008-06-23 15:08:15 +00:00
LegalizeVectorTypes.cpp	Cleanup up LegalizeTypes handling of loads and	2008-06-23 14:19:45 +00:00
Makefile	remove attribution from lib Makefiles.	2007-12-29 20:09:26 +00:00
ScheduleDAG.cpp	Remove a redundant return.	2008-06-21 19:34:57 +00:00
ScheduleDAGList.cpp	Use the new PriorityQueue in ScheduleDAGList too, which also	2008-06-23 23:40:09 +00:00
ScheduleDAGRRList.cpp	Move a DenseMap's declaration outside of a loop, and just call	2008-06-23 21:15:00 +00:00
SelectionDAG.cpp	Revert the SelectionDAG optimization that makes	2008-06-30 10:19:09 +00:00
SelectionDAGISel.cpp	Revert the SelectionDAG optimization that makes	2008-06-30 10:19:09 +00:00
SelectionDAGPrinter.cpp	Remove ScheduleDAG's SUnitMap altogether. Instead, use SDNode's NodeId	2008-06-21 19:18:17 +00:00
TargetLowering.cpp	Add support for expanding PPC 128 bit floats.	2008-06-25 20:24:48 +00:00