Evan Cheng 20b0abc24f Copy coalescing change to prevent a physical register from being pin to a ... long live interval that has low usage density. 1. Change order of coalescing to join physical registers with virtual registers first before virtual register intervals become too long. 2. Check size and usage density to determine if it's worthwhile to join. 3. If joining is aborted, assign virtual register live interval allocation preference field to the physical register. 4. Register allocator should try to allocate to the preferred register first (if available) to create identify moves that can be eliminated. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36218 91177308-0d34-0410-b5e6-96231b3b80d8		2007-04-17 20:32:26 +00:00
..
AsmPrinter.h	Add support for changes in DwarfWriter.	2007-02-21 22:47:38 +00:00
CallingConvLower.h	add methods for analysis of call results and return nodes.	2007-02-28 07:09:40 +00:00
DwarfWriter.h	Landing pad-less eh for PPC.	2007-01-29 18:51:14 +00:00
FileWriters.h	Fixed comments.	2007-02-08 06:05:08 +00:00
InstrScheduling.h
IntrinsicLowering.h	IntrinsicLowering now requires TargetData.	2007-01-29 17:39:50 +00:00
LinkAllCodegenComponents.h
LiveInterval.h	Add a register allocation preference field; add a method to compute size of a live interval.	2007-04-17 20:25:11 +00:00
LiveIntervalAnalysis.h	Copy coalescing change to prevent a physical register from being pin to a	2007-04-17 20:32:26 +00:00
LiveVariables.h	Keep track of number of uses within the function per virtual register.	2007-04-17 20:22:11 +00:00
MachineBasicBlock.h	Add the 'explicit' keyword to several constructors that accept one	2007-03-23 18:44:11 +00:00
MachineCodeEmitter.h
MachineConstantPool.h	Add the 'explicit' keyword to several constructors that accept one	2007-03-23 18:44:11 +00:00
MachineFrameInfo.h	Add isFixedObjectIndex. It returns true if the stack slot index is for a fixed stack object.	2007-04-04 07:38:25 +00:00
MachineFunction.h	isPhysRegUsed should be const.	2007-02-15 02:55:51 +00:00
MachineFunctionPass.h
MachineInstr.h	Change findRegisterUseOperand() to return operand index instead.	2007-03-26 22:37:45 +00:00
MachineInstrBuilder.h	Add the 'explicit' keyword to several constructors that accept one	2007-03-23 18:44:11 +00:00
MachineJumpTableInfo.h	Add the 'explicit' keyword to several constructors that accept one	2007-03-23 18:44:11 +00:00
MachineLocation.h	Add the 'explicit' keyword to several constructors that accept one	2007-03-23 18:44:11 +00:00
MachineModuleInfo.h	Collect eh filter info.	2007-03-01 20:25:32 +00:00
MachinePassRegistry.h	switch the sched unit map over to use a DenseMap instead of std::map. This	2007-02-03 01:34:13 +00:00
MachineRelocation.h
MachORelocation.h	New file for the MachORelocation structure. It doesn't have to be tied to the	2007-02-03 02:36:17 +00:00
Passes.h
RegAllocRegistry.h
RegisterScavenging.h	Fix reversed logic in getRegsUsed. Rename RegStates to RegsAvailable to	2007-03-26 22:23:54 +00:00
RuntimeLibcalls.h	Added O_F32 and O_64 in addition to UO_F32 and UO_64 even though by	2007-01-31 09:26:31 +00:00
SchedGraphCommon.h
ScheduleDAG.h	switch the VRBaseMap in the scheduler from an std::map to a DenseMap. This	2007-02-04 08:47:20 +00:00
SchedulerRegistry.h
SelectionDAG.h	Change the MachineDebugInfo to MachineModuleInfo to better reflect usage	2007-01-26 21:22:28 +00:00
SelectionDAGISel.h	Next stage into switch lowering refactoring	2007-04-09 12:31:58 +00:00
SelectionDAGNodes.h	Implemented correct stack probing on mingw/cygwin for dynamic alloca's.	2007-04-17 09:20:00 +00:00
SSARegMap.h	rename DenseMap to IndexedMap.	2007-02-01 05:32:05 +00:00
ValueTypes.h	For PR1297:	2007-04-01 07:17:45 +00:00
ValueTypes.td	For PR1297:	2007-04-01 07:17:45 +00:00