Dan Gohman 7c3234c6be Reorganize the lifetimes of the major objects SelectionDAGISel ... works with. SelectionDAG, FunctionLoweringInfo, and SelectionDAGLowering objects now get created once per SelectionDAGISel instance, and can be reused across blocks and across functions. Previously, they were created and destroyed each time they were needed. This reorganization simplifies the handling of PHI nodes, and also SwitchCases, JumpTables, and BitTestBlocks. This simplification has the side effect of fixing a bug in FastISel where successor PHI nodes weren't being updated correctly. This is also a step towards making the transition from FastISel into and out of SelectionDAG faster, and also making plain SelectionDAG faster on code with lots of little blocks. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55450 91177308-0d34-0410-b5e6-96231b3b80d8		2008-08-27 23:52:12 +00:00
..
CallingConvLower.cpp
DAGCombiner.cpp	disallow direct access to SDValue::ResNo, provide a getter instead	2008-08-26 22:36:50 +00:00
FastISel.cpp	Add a helper method that will be used to support EXTRACT_SUBREG for selecting trunc's in fast-isel.	2008-08-27 22:30:02 +00:00
LegalizeDAG.cpp	disallow direct access to SDValue::ResNo, provide a getter instead	2008-08-26 22:36:50 +00:00
LegalizeFloatTypes.cpp	Add the remaining fp_round libcalls:	2008-08-07 19:01:24 +00:00
LegalizeIntegerTypes.cpp
LegalizeTypes.cpp	Avoid an empty-if-body warning in release builds.	2008-08-20 14:00:56 +00:00
LegalizeTypes.h	Add the remaining fp_round libcalls:	2008-08-07 19:01:24 +00:00
LegalizeTypesGeneric.cpp
LegalizeVectorTypes.cpp	Add libm-oriented ISD opcodes for rounding operations.	2008-08-21 17:55:02 +00:00
Makefile
ScheduleDAG.cpp	Optimize ScheduleDAG's ComputeDepths and ComputeHeights to not need	2008-08-27 16:27:25 +00:00
ScheduleDAGList.cpp
ScheduleDAGRRList.cpp	Optimize ScheduleDAGRRList's topological sort to use one pass instead	2008-08-27 16:29:48 +00:00
SelectionDAG.cpp	Reorganize the lifetimes of the major objects SelectionDAGISel	2008-08-27 23:52:12 +00:00
SelectionDAGISel.cpp	Reorganize the lifetimes of the major objects SelectionDAGISel	2008-08-27 23:52:12 +00:00
SelectionDAGPrinter.cpp	disallow direct access to SDValue::ResNo, provide a getter instead	2008-08-26 22:36:50 +00:00
TargetLowering.cpp	Add libcalls for the new rounding opcodes.	2008-08-21 18:38:14 +00:00