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llvm-6502/include/llvm/CodeGen
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Andrew Trick 47c144505b misched preparation: clarify ScheduleDAG and ScheduleDAGInstrs roles. 
ScheduleDAG is responsible for the DAG: SUnits and SDeps. It provides target hooks for latency computation.

ScheduleDAGInstrs extends ScheduleDAG and defines the current scheduling region in terms of MachineInstr iterators. It has access to the target's scheduling itinerary data. ScheduleDAGInstrs provides the logic for building the ScheduleDAG for the sequence of MachineInstrs in the current region. Target's can implement highly custom schedulers by extending this class.

ScheduleDAGPostRATDList provides the driver and diagnostics for current postRA scheduling. It maintains a current Sequence of scheduled machine instructions and logic for splicing them into the block. During scheduling, it uses the ScheduleHazardRecognizer provided by the target.

Specific changes:
- Removed driver code from ScheduleDAG. clearDAG is the only interface needed.

- Added enterRegion/exitRegion hooks to ScheduleDAGInstrs to delimit the scope of each scheduling region and associated DAG. They should be used to setup and cleanup any region-specific state in addition to the DAG itself. This is necessary because we reuse the same ScheduleDAG object for the entire function. The target may extend these hooks to do things at regions boundaries, like bundle terminators. The hooks are called even if we decide not to schedule the region. So all instructions in a block are "covered" by these calls.

- Added ScheduleDAGInstrs::begin()/end() public API.

- Moved Sequence into the driver layer, which is specific to the scheduling algorithm.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152208 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-07 05:21:52 +00:00
..
PBQP Convert assert(0) to llvm_unreachable 2012-02-05 22:14:15 +00:00
Analysis.h Move global variables in TargetMachine into new TargetOptions class. As an API 2011-12-02 22:16:29 +00:00
AsmPrinter.h Allow the use of an alternate symbol for calculating a function's size. 2012-02-22 21:11:47 +00:00
CalcSpillWeights.h Move CalculateRegClass to MRI::recomputeRegClass. 2011-08-09 16:46:27 +00:00
CallingConvLower.h Provide an ARMCCState subclass of CCState so that ARM clients will always set 2011-06-10 20:59:24 +00:00
DFAPacketizer.h Strip a layer of boilerplate from the VLIWPacketizer by storing the scheduler as an opaque pointer. 2012-02-23 13:39:13 +00:00
EdgeBundles.h Twinify GraphWriter a little bit. 2011-11-15 16:26:38 +00:00
FastISel.h [fast-isel] Add support for selecting insertvalue. 2011-12-09 20:09:54 +00:00
FunctionLoweringInfo.h Replace a DenseSet with SmallPtrSet. 2012-02-23 20:53:02 +00:00
GCMetadata.h Attach a DebugLoc to a GC point in order to get precise information in the JIT of a GC point. 2010-09-24 17:27:50 +00:00
GCMetadataPrinter.h Trailing whitespace. 2010-07-01 01:00:22 +00:00
GCs.h
GCStrategy.h Add a custom safepoint method, in order for language implementers to decide which machine instruction gets to be a safepoint. 2011-11-11 18:32:52 +00:00
IntrinsicLowering.h Recognize inline asm 'rev /bin/bash, ' as a bswap intrinsic call. 2011-01-08 01:24:27 +00:00
ISDOpcodes.h Add a RegisterMaskSDNode class. 2012-01-18 23:52:12 +00:00
JITCodeEmitter.h Unweaken vtables as per http://llvm.org/docs/CodingStandards.html#ll_virtual_anch 2011-12-20 02:50:00 +00:00
LatencyPriorityQueue.h Various bits of framework needed for precise machine-level selection 2010-12-24 05:03:26 +00:00
LexicalScopes.h Unweaken vtables as per http://llvm.org/docs/CodingStandards.html#ll_virtual_anch 2011-12-20 02:50:00 +00:00
LinkAllAsmWriterComponents.h
LinkAllCodegenComponents.h Codegen pass definition cleanup. No functionality. 2012-02-08 21:23:13 +00:00
LiveInterval.h Drop the REDEF_BY_EC VNInfo flag. 2012-02-04 05:51:25 +00:00
LiveIntervalAnalysis.h Add API "handleMoveIntoBundl" for updating liveness when moving instructions into 2012-02-21 22:29:38 +00:00
LiveStackAnalysis.h Move getCommonSubClass() into TRI. 2011-09-30 22:18:51 +00:00
LiveVariables.h Handle register masks in LiveVariables. 2012-01-21 00:58:53 +00:00
MachineBasicBlock.h Added MachineBasicBlock::getFullName() to standardize/factor codegen diagnostics. 2012-03-07 00:18:18 +00:00
MachineBlockFrequencyInfo.h Add some constantness to BranchProbabilityInfo and BlockFrequnencyInfo. 2011-12-20 20:03:10 +00:00
MachineBranchProbabilityInfo.h Add some constantness to BranchProbabilityInfo and BlockFrequnencyInfo. 2011-12-20 20:03:10 +00:00
MachineCodeEmitter.h Unweaken vtables as per http://llvm.org/docs/CodingStandards.html#ll_virtual_anch 2011-12-20 02:50:00 +00:00
MachineCodeInfo.h Merge System into Support. 2010-11-29 18:16:10 +00:00
MachineConstantPool.h Unweaken vtables as per http://llvm.org/docs/CodingStandards.html#ll_virtual_anch 2011-12-20 02:50:00 +00:00
MachineDominators.h Silence the new -Wempty-body warning. It appeared because the next statement 2012-02-14 22:17:14 +00:00
MachineFrameInfo.h Fix typo, reported by Eitan Adler! 2011-12-10 03:16:20 +00:00
MachineFunction.h Allow inlining of functions with returns_twice calls, if they have the 2011-12-18 20:35:43 +00:00
MachineFunctionAnalysis.h Sink codegen optimization level into MCCodeGenInfo along side relocation model 2011-11-16 08:38:26 +00:00
MachineFunctionPass.h Reapply r110396, with fixes to appease the Linux buildbot gods. 2010-08-06 18:33:48 +00:00
MachineInstr.h Move getBundleStart() into MachineInstrBundle.h. 2012-03-01 01:26:01 +00:00
MachineInstrBuilder.h Use <def,undef> operands when spilling NEON bundles. 2012-03-04 18:40:30 +00:00
MachineInstrBundle.h Move getBundleStart() into MachineInstrBundle.h. 2012-03-01 01:26:01 +00:00
MachineJumpTableInfo.h Add a new MachineJumpTableInfo entry type, EK_GPRel64BlockAddress, which is 2012-02-03 04:33:00 +00:00
MachineLoopInfo.h Get rid of static constructors for pass registration. Instead, every pass exposes an initializeMyPassFunction(), which 2010-10-19 17:21:58 +00:00
MachineLoopRanges.h Enable loop splitting in RegAllocGreedy. 2010-12-17 23:16:32 +00:00
MachineMemOperand.h Make headers standalone. 2011-11-14 17:45:03 +00:00
MachineModuleInfo.h Properly emit _fltused with FastISel. Refactor to share code with SDAG. 2012-02-22 19:06:13 +00:00
MachineModuleInfoImpls.h Add a bit along with the MCSymbols stored in the MachineModuleInfo maps that 2010-03-10 22:34:10 +00:00
MachineOperand.h Clean up comment. 2012-02-10 19:27:34 +00:00
MachinePassRegistry.h Unweaken vtables as per http://llvm.org/docs/CodingStandards.html#ll_virtual_anch 2011-12-20 02:50:00 +00:00
MachineRegisterInfo.h Use uint16_t to store register overlaps to reduce static data. 2012-03-04 10:43:23 +00:00
MachineRelocation.h Merge System into Support. 2010-11-29 18:16:10 +00:00
MachineSSAUpdater.h Combine the implementations of the core part of the SSAUpdater and 2010-05-04 23:18:19 +00:00
MachORelocation.h Merge System into Support. 2010-11-29 18:16:10 +00:00
Passes.h delete dead code, patch by Michael Spencer. 2012-03-02 13:41:31 +00:00
ProcessImplicitDefs.h Place context in member variables instead of passing around pointers. 2011-03-14 20:57:14 +00:00
PseudoSourceValue.h Typos. 2011-06-01 23:32:40 +00:00
RegAllocPBQP.h Add a hook for PBQP clients to run a custom pre-alloc pass to run prior to PBQP allocation. Patch by Arnaud Allard de Grandmaison. 2011-06-17 07:09:01 +00:00
RegAllocRegistry.h
RegisterScavenging.h Track reserved registers separately from RegsAvailable. 2012-02-23 01:13:32 +00:00
ResourcePriorityQueue.h VLIW specific scheduler framework that utilizes deterministic finite automaton (DFA). 2012-02-01 22:13:57 +00:00
RuntimeLibcalls.h Add an intrinsic and codegen support for fused multiply-accumulate. The intent 2011-07-08 21:39:21 +00:00
ScheduleDAG.h misched preparation: clarify ScheduleDAG and ScheduleDAGInstrs roles. 2012-03-07 05:21:52 +00:00
ScheduleHazardRecognizer.h Convert -enable-sched-cycles and -enable-sched-hazard to -disable 2011-01-21 05:51:33 +00:00
SchedulerRegistry.h VLIW specific scheduler framework that utilizes deterministic finite automaton (DFA). 2012-02-01 22:13:57 +00:00
ScoreboardHazardRecognizer.h - Rename TargetInstrDesc, TargetOperandInfo to MCInstrDesc and MCOperandInfo and 2011-06-28 19:10:37 +00:00
SelectionDAG.h Convert assert(0) to llvm_unreachable 2012-02-05 22:14:15 +00:00
SelectionDAGISel.h Convert assert(0) to llvm_unreachable 2012-02-05 22:14:15 +00:00
SelectionDAGNodes.h Add a RegisterMaskSDNode class. 2012-01-18 23:52:12 +00:00
SlotIndexes.h Move getBundleStart() into MachineInstrBundle.h. 2012-03-01 01:26:01 +00:00
TargetLoweringObjectFileImpl.h Modify the code that emits the module flags to use the new module flags accessor 2012-02-15 22:36:15 +00:00
ValueTypes.h Remove an unused function. 2012-03-05 12:49:45 +00:00
ValueTypes.td Added MVT::v2f16 2012-01-12 23:14:13 +00:00