class ScheduleHazardRecognizer;
class GCFunctionInfo;
class ScheduleDAGSDNodes;
+ class LoadInst;
/// SelectionDAGISel - This is the common base class used for SelectionDAG-based
/// pattern-matching instruction selectors.
CodeGenOpt::Level OptLevel;
static char ID;
- explicit SelectionDAGISel(TargetMachine &tm,
+ explicit SelectionDAGISel(const TargetMachine &tm,
CodeGenOpt::Level OL = CodeGenOpt::Default);
virtual ~SelectionDAGISel();
/// IsLegalToFold - Returns true if the specific operand node N of
/// U can be folded during instruction selection that starts at Root.
- /// FIXME: This is a static member function because the PIC16 target,
- /// which uses it during lowering.
+ /// FIXME: This is a static member function because the MSP430/SystemZ/X86
+ /// targets, which uses it during isel. This could become a proper member.
static bool IsLegalToFold(SDValue N, SDNode *U, SDNode *Root,
CodeGenOpt::Level OptLevel,
bool IgnoreChains = false);
return 0;
}
- virtual bool CheckComplexPattern(SDNode *Root, SDValue N, unsigned PatternNo,
- SmallVectorImpl<SDValue> &Result) {
+ virtual bool CheckComplexPattern(SDNode *Root, SDNode *Parent, SDValue N,
+ unsigned PatternNo,
+ SmallVectorImpl<std::pair<SDValue, SDNode*> > &Result) {
assert(0 && "Tblgen should generate the implementation of this!");
return false;
}
SDNode *MorphNode(SDNode *Node, unsigned TargetOpc, SDVTList VTs,
const SDValue *Ops, unsigned NumOps, unsigned EmitNodeInfo);
- void PrepareEHLandingPad(MachineBasicBlock *BB);
+ void PrepareEHLandingPad();
void SelectAllBasicBlocks(const Function &Fn);
- void FinishBasicBlock(MachineBasicBlock *BB);
+ bool TryToFoldFastISelLoad(const LoadInst *LI, FastISel *FastIS);
+ void FinishBasicBlock();
- MachineBasicBlock *SelectBasicBlock(MachineBasicBlock *BB,
- const BasicBlock *LLVMBB,
- BasicBlock::const_iterator Begin,
- BasicBlock::const_iterator End,
- bool &HadTailCall);
- MachineBasicBlock *CodeGenAndEmitDAG(MachineBasicBlock *BB);
+ void SelectBasicBlock(BasicBlock::const_iterator Begin,
+ BasicBlock::const_iterator End,
+ bool &HadTailCall);
+ void CodeGenAndEmitDAG();
void LowerArguments(const BasicBlock *BB);
- void ShrinkDemandedOps();
void ComputeLiveOutVRegInfo();
- void HandlePHINodesInSuccessorBlocks(const BasicBlock *LLVMBB);
-
- bool HandlePHINodesInSuccessorBlocksFast(const BasicBlock *LLVMBB,
- FastISel *F);
-
/// Create the scheduler. If a specific scheduler was specified
/// via the SchedulerRegistry, use it, otherwise select the
/// one preferred by the target.