Duncan Sands 245741d2a1 Fix up the logic for result expanding the various extension ... operations so they work right for integers with funky bit-widths. For example, consider extending i48 to i64 on a 32 bit machine. The i64 result is expanded to 2 x i32. We know that the i48 operand will be promoted to i64, then also expanded to 2 x i32. If we had the expanded promoted operand to hand, then expanding the result would be trivial. Unfortunately at this stage we can only get hold of the promoted operand. So instead we kind of hand-expand, doing explicit shifting and truncating to get the top and bottom halves of the i64 operand into 2 x i32, which are then used to expand the result. This is harmless, because when the promoted operand is finally expanded all this bit fiddling turns into trivial operations which are eliminated either by the expansion code itself or the DAG combiner. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43223 91177308-0d34-0410-b5e6-96231b3b80d8		2007-10-22 18:26:21 +00:00
..
CallingConvLower.cpp
DAGCombiner.cpp	Redo "last ppc long double fix" as Chris wants.	2007-10-19 20:29:00 +00:00
LegalizeDAG.cpp	Fix a few places vector operations were not getting	2007-10-20 00:07:52 +00:00
LegalizeDAGTypes.cpp	Fix up the logic for result expanding the various extension	2007-10-22 18:26:21 +00:00
Makefile
ScheduleDAG.cpp	EXTRACT_SUBREG coalescing support. The coalescer now treats EXTRACT_SUBREG like	2007-10-12 08:50:34 +00:00
ScheduleDAGList.cpp	Make CalcLatency() non-recursive.	2007-10-15 21:33:22 +00:00
ScheduleDAGRRList.cpp	One mundane change: Change ReplaceAllUsesOfValueWith to *optionally*	2007-10-15 06:10:22 +00:00
SelectionDAG.cpp	If the value types are equal then this routine	2007-10-19 13:05:40 +00:00
SelectionDAGISel.cpp	rename ExpandOperation to ExpandOperationResult, as suggested	2007-10-19 15:28:47 +00:00
SelectionDAGPrinter.cpp	Add a (disabled by default) way to view the ID of a node.	2007-10-15 05:32:43 +00:00
TargetLowering.cpp