Duncan Sands 01405f9284 Add support for expanding trunc stores. Consider ... storing an i170 on a 32 bit machine. This is first promoted to a trunc-i170 store of an i256. On a little-endian machine this expands to a store of an i128 and a trunc-i42 store of an i128. The trunc-i42 store is further expanded to a trunc-i42 store of an i64, then to a store of an i32 and a trunc-i10 store of an i32. At this point the operand type is legal (i32) and expansion stops (legalization of the trunc-i10 needs to be handled in LegalizeDAG.cpp). On big-endian machines the high bits are stored first, and some bit-fiddling is needed in order to generate aligned stores. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43499 91177308-0d34-0410-b5e6-96231b3b80d8		2007-10-30 12:50:39 +00:00
..
CallingConvLower.cpp
DAGCombiner.cpp	Fix a DAGCombiner abort on a bitcast from a scalar to a vector.	2007-10-29 20:44:42 +00:00
LegalizeDAG.cpp	The guaranteed alignment of ptr+offset is only the minimum of	2007-10-28 12:59:45 +00:00
LegalizeDAGTypes.cpp	Add support for expanding trunc stores. Consider	2007-10-30 12:50:39 +00:00
Makefile
ScheduleDAG.cpp
ScheduleDAGList.cpp	Make CalcLatency() non-recursive.	2007-10-15 21:33:22 +00:00
ScheduleDAGRRList.cpp
SelectionDAG.cpp	If a call to getTruncStore is for a normal store,	2007-10-30 12:40:58 +00:00
SelectionDAGISel.cpp	- Remove the hacky code that forces a memcpy. Alignment is taken care of in the	2007-10-26 20:24:42 +00:00
SelectionDAGPrinter.cpp
TargetLowering.cpp