Jim Grosbach b58f498f75 Add register-reuse to frame-index register scavenging. When a target uses ... a virtual register to eliminate a frame index, it can return that register and the constant stored there to PEI to track. When scavenging to allocate for those registers, PEI then tracks the last-used register and value, and if it is still available and matches the value for the next index, reuses the existing value rather and removes the re-materialization instructions. Fancier tracking and adjustment of scavenger allocations to keep more values live for longer is possible, but not yet implemented and would likely be better done via a different, less special-purpose, approach to the problem. eliminateFrameIndex() is modified so the target implementations can return the registers they wish to be tracked for reuse. ARM Thumb1 implements and utilizes the new mechanism. All other targets are simply modified to adjust for the changed eliminateFrameIndex() prototype. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83467 91177308-0d34-0410-b5e6-96231b3b80d8		2009-10-07 17:12:56 +00:00
..
ADT	Add a comment explaining how DenseMap::insert works, because it is not	2009-10-07 09:23:56 +00:00
Analysis	Remove an unnnecessary LLVMContext argument in	2009-10-05 16:36:26 +00:00
Assembly
Bitcode	Write and read metadata attachments.	2009-09-18 19:26:43 +00:00
CodeGen	Add register-reuse to frame-index register scavenging. When a target uses	2009-10-07 17:12:56 +00:00
CompilerDriver	Add a way to query the number of input files.	2009-09-28 01:16:42 +00:00
Config	Fix a compile failure introduced by r82675 on MinGW which doesn't have	2009-09-25 21:07:20 +00:00
ExecutionEngine
MC	Allow symbols to start from the digit if target requests it. This allows, e.g. pinning	2009-09-18 16:57:42 +00:00
Support	Rename enum NumOccurrences to NumOccurrencesFlag since there is a member named NumOccurrences.	2009-10-04 05:25:42 +00:00
System	Revert "Get rid of GetProcessId in Win32/Program.inc.", this breaks	2009-09-22 04:44:56 +00:00
Target	Add register-reuse to frame-index register scavenging. When a target uses	2009-10-07 17:12:56 +00:00
Transforms	remove predicate simplifier, it never got the last bugs beaten	2009-10-06 16:59:46 +00:00
AbstractTypeUser.h
Argument.h
Attributes.h
AutoUpgrade.h
BasicBlock.h
CallGraphSCCPass.h
CallingConv.h
CMakeLists.txt
Constant.h
Constants.h	For the NSWSub support in the builder to actually be useable,	2009-09-26 15:35:35 +00:00
DerivedTypes.h
Function.h
GlobalAlias.h
GlobalValue.h
GlobalVariable.h
InlineAsm.h
InstrTypes.h	Round out the API for the new optimization flags.	2009-09-27 21:33:04 +00:00
Instruction.def
Instruction.h	Instruction::clone does not need to take an LLVMContext&. Remove that and	2009-09-27 07:38:41 +00:00
Instructions.h	Round out the API for the new optimization flags.	2009-09-27 21:33:04 +00:00
IntrinsicInst.h
Intrinsics.h
Intrinsics.td
IntrinsicsAlpha.td
IntrinsicsARM.td
IntrinsicsBlackfin.td
IntrinsicsCellSPU.td
IntrinsicsPowerPC.td
IntrinsicsX86.td
IntrinsicsXCore.td
LinkAllPasses.h	remove predicate simplifier, it never got the last bugs beaten	2009-10-06 16:59:46 +00:00
LinkAllVMCore.h
Linker.h
LLVMContext.h	Make LLVMContext's pImpl member const.	2009-10-06 17:43:57 +00:00
Metadata.h	Add removeMD().	2009-09-29 20:42:25 +00:00
Module.h
ModuleProvider.h
OperandTraits.h
Operator.h	add a helper method.	2009-09-21 05:52:45 +00:00
Pass.h
PassAnalysisSupport.h
PassManager.h
PassManagers.h	Move the dominator verification code out of special code embedded within	2009-09-28 00:27:48 +00:00
PassSupport.h
SymbolTableListTraits.h	Forward-declare ValueSymbolTable so that SymbolTableListTraits.h can be parsed by itself	2009-09-30 00:08:25 +00:00
Type.h	Make getPointerTo return a const PointerType* rather than	2009-10-07 07:35:19 +00:00
TypeSymbolTable.h
Use.h
User.h
Value.h	s/class Metadata/class MetadataContext/g	2009-09-28 21:41:20 +00:00
ValueSymbolTable.h