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authorAndrew Trick <atrick@apple.com>2010-12-24 04:28:06 +0000
committerAndrew Trick <atrick@apple.com>2010-12-24 04:28:06 +0000
commit6e8f4c404825b79f9b9176483653f1aa927dfbde (patch)
tree4a5837073327bcc312eb18562400aba20481609f /include/llvm/CodeGen/SelectionDAGISel.h
parentef485d86585123b5e31a7f88aef22725ebd07e7a (diff)
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122539 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/CodeGen/SelectionDAGISel.h')
-rw-r--r--include/llvm/CodeGen/SelectionDAGISel.h72
1 files changed, 36 insertions, 36 deletions
diff --git a/include/llvm/CodeGen/SelectionDAGISel.h b/include/llvm/CodeGen/SelectionDAGISel.h
index e5204db5cd..79fc51e860 100644
--- a/include/llvm/CodeGen/SelectionDAGISel.h
+++ b/include/llvm/CodeGen/SelectionDAGISel.h
@@ -35,7 +35,7 @@ namespace llvm {
class GCFunctionInfo;
class ScheduleDAGSDNodes;
class LoadInst;
-
+
/// SelectionDAGISel - This is the common base class used for SelectionDAG-based
/// pattern-matching instruction selectors.
class SelectionDAGISel : public MachineFunctionPass {
@@ -55,7 +55,7 @@ public:
explicit SelectionDAGISel(const TargetMachine &tm,
CodeGenOpt::Level OL = CodeGenOpt::Default);
virtual ~SelectionDAGISel();
-
+
const TargetLowering &getTargetLowering() { return TLI; }
virtual void getAnalysisUsage(AnalysisUsage &AU) const;
@@ -63,18 +63,18 @@ public:
virtual bool runOnMachineFunction(MachineFunction &MF);
virtual void EmitFunctionEntryCode() {}
-
+
/// PreprocessISelDAG - This hook allows targets to hack on the graph before
/// instruction selection starts.
virtual void PreprocessISelDAG() {}
-
+
/// PostprocessISelDAG() - This hook allows the target to hack on the graph
/// right after selection.
virtual void PostprocessISelDAG() {}
-
+
/// Select - Main hook targets implement to select a node.
virtual SDNode *Select(SDNode *N) = 0;
-
+
/// SelectInlineAsmMemoryOperand - Select the specified address as a target
/// addressing mode, according to the specified constraint code. If this does
/// not match or is not implemented, return true. The resultant operands
@@ -101,13 +101,13 @@ public:
/// CreateTargetHazardRecognizer - Return a newly allocated hazard recognizer
/// to use for this target when scheduling the DAG.
virtual ScheduleHazardRecognizer *CreateTargetHazardRecognizer();
-
-
+
+
// Opcodes used by the DAG state machine:
enum BuiltinOpcodes {
OPC_Scope,
OPC_RecordNode,
- OPC_RecordChild0, OPC_RecordChild1, OPC_RecordChild2, OPC_RecordChild3,
+ OPC_RecordChild0, OPC_RecordChild1, OPC_RecordChild2, OPC_RecordChild3,
OPC_RecordChild4, OPC_RecordChild5, OPC_RecordChild6, OPC_RecordChild7,
OPC_RecordMemRef,
OPC_CaptureGlueInput,
@@ -129,7 +129,7 @@ public:
OPC_CheckComplexPat,
OPC_CheckAndImm, OPC_CheckOrImm,
OPC_CheckFoldableChainNode,
-
+
OPC_EmitInteger,
OPC_EmitRegister,
OPC_EmitConvertToTarget,
@@ -143,7 +143,7 @@ public:
OPC_MarkGlueResults,
OPC_CompleteMatch
};
-
+
enum {
OPFL_None = 0, // Node has no chain or glue input and isn't variadic.
OPFL_Chain = 1, // Node has a chain input.
@@ -157,37 +157,37 @@ public:
OPFL_Variadic4 = 5<<4, // Node is variadic, root has 4 fixed inputs.
OPFL_Variadic5 = 6<<4, // Node is variadic, root has 5 fixed inputs.
OPFL_Variadic6 = 7<<4, // Node is variadic, root has 6 fixed inputs.
-
+
OPFL_VariadicInfo = OPFL_Variadic6
};
-
+
/// getNumFixedFromVariadicInfo - Transform an EmitNode flags word into the
/// number of fixed arity values that should be skipped when copying from the
/// root.
static inline int getNumFixedFromVariadicInfo(unsigned Flags) {
return ((Flags&OPFL_VariadicInfo) >> 4)-1;
}
-
-
+
+
protected:
/// DAGSize - Size of DAG being instruction selected.
///
unsigned DAGSize;
-
+
/// ISelPosition - Node iterator marking the current position of
/// instruction selection as it procedes through the topologically-sorted
/// node list.
SelectionDAG::allnodes_iterator ISelPosition;
-
- /// ISelUpdater - helper class to handle updates of the
+
+ /// ISelUpdater - helper class to handle updates of the
/// instruction selection graph.
class ISelUpdater : public SelectionDAG::DAGUpdateListener {
SelectionDAG::allnodes_iterator &ISelPosition;
public:
explicit ISelUpdater(SelectionDAG::allnodes_iterator &isp)
: ISelPosition(isp) {}
-
+
/// NodeDeleted - Handle nodes deleted from the graph. If the
/// node being deleted is the current ISelPosition node, update
/// ISelPosition.
@@ -196,46 +196,46 @@ protected:
if (ISelPosition == SelectionDAG::allnodes_iterator(N))
++ISelPosition;
}
-
+
/// NodeUpdated - Ignore updates for now.
virtual void NodeUpdated(SDNode *N) {}
};
-
+
/// ReplaceUses - replace all uses of the old node F with the use
/// of the new node T.
void ReplaceUses(SDValue F, SDValue T) {
ISelUpdater ISU(ISelPosition);
CurDAG->ReplaceAllUsesOfValueWith(F, T, &ISU);
}
-
+
/// ReplaceUses - replace all uses of the old nodes F with the use
/// of the new nodes T.
void ReplaceUses(const SDValue *F, const SDValue *T, unsigned Num) {
ISelUpdater ISU(ISelPosition);
CurDAG->ReplaceAllUsesOfValuesWith(F, T, Num, &ISU);
}
-
+
/// ReplaceUses - replace all uses of the old node F with the use
/// of the new node T.
void ReplaceUses(SDNode *F, SDNode *T) {
ISelUpdater ISU(ISelPosition);
CurDAG->ReplaceAllUsesWith(F, T, &ISU);
}
-
+
/// SelectInlineAsmMemoryOperands - Calls to this are automatically generated
/// by tblgen. Others should not call it.
void SelectInlineAsmMemoryOperands(std::vector<SDValue> &Ops);
-
+
public:
// Calls to these predicates are generated by tblgen.
bool CheckAndMask(SDValue LHS, ConstantSDNode *RHS,
int64_t DesiredMaskS) const;
bool CheckOrMask(SDValue LHS, ConstantSDNode *RHS,
int64_t DesiredMaskS) const;
-
-
+
+
/// CheckPatternPredicate - This function is generated by tblgen in the
/// target. It runs the specified pattern predicate and returns true if it
/// succeeds or false if it fails. The number is a private implementation
@@ -253,14 +253,14 @@ public:
assert(0 && "Tblgen should generate the implementation of this!");
return 0;
}
-
+
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;
}
-
+
virtual SDValue RunSDNodeXForm(SDValue V, unsigned XFormNo) {
assert(0 && "Tblgen shoudl generate this!");
return SDValue();
@@ -269,9 +269,9 @@ public:
SDNode *SelectCodeCommon(SDNode *NodeToMatch,
const unsigned char *MatcherTable,
unsigned TableSize);
-
+
private:
-
+
// Calls to these functions are generated by tblgen.
SDNode *Select_INLINEASM(SDNode *N);
SDNode *Select_UNDEF(SDNode *N);
@@ -281,7 +281,7 @@ private:
void DoInstructionSelection();
SDNode *MorphNode(SDNode *Node, unsigned TargetOpc, SDVTList VTs,
const SDValue *Ops, unsigned NumOps, unsigned EmitNodeInfo);
-
+
void PrepareEHLandingPad();
void SelectAllBasicBlocks(const Function &Fn);
bool TryToFoldFastISelLoad(const LoadInst *LI, FastISel *FastIS);
@@ -292,7 +292,7 @@ private:
bool &HadTailCall);
void CodeGenAndEmitDAG();
void LowerArguments(const BasicBlock *BB);
-
+
void ComputeLiveOutVRegInfo();
/// Create the scheduler. If a specific scheduler was specified
@@ -300,16 +300,16 @@ private:
/// one preferred by the target.
///
ScheduleDAGSDNodes *CreateScheduler();
-
+
/// OpcodeOffset - This is a cache used to dispatch efficiently into isel
/// state machines that start with a OPC_SwitchOpcode node.
std::vector<unsigned> OpcodeOffset;
-
+
void UpdateChainsAndGlue(SDNode *NodeToMatch, SDValue InputChain,
const SmallVectorImpl<SDNode*> &ChainNodesMatched,
SDValue InputGlue, const SmallVectorImpl<SDNode*> &F,
bool isMorphNodeTo);
-
+
};
}