#ifndef LLVM_CODEGEN_SELECTIONDAG_H
#define LLVM_CODEGEN_SELECTIONDAG_H
+#include "llvm/ADT/FoldingSet.h"
+#include "llvm/ADT/ilist"
#include "llvm/CodeGen/SelectionDAGNodes.h"
+
+#include <list>
+#include <vector>
#include <map>
-#include <string> // FIXME remove eventually, turning map into const char* map.
+#include <set>
+#include <string>
namespace llvm {
+ class AliasAnalysis;
class TargetLowering;
class TargetMachine;
+ class MachineModuleInfo;
class MachineFunction;
+ class MachineConstantPoolValue;
/// SelectionDAG class - This is used to represent a portion of an LLVM function
/// in a low-level Data Dependence DAG representation suitable for instruction
class SelectionDAG {
TargetLowering &TLI;
MachineFunction &MF;
+ MachineModuleInfo *MMI;
- // Root - The root of the entire DAG. EntryNode - The starting token.
+ /// Root - The root of the entire DAG. EntryNode - The starting token.
SDOperand Root, EntryNode;
- // AllNodes - All of the nodes in the DAG
- std::vector<SDNode*> AllNodes;
+ /// AllNodes - A linked list of nodes in the current DAG.
+ ilist<SDNode> AllNodes;
- // ValueNodes - track SrcValue nodes
- std::map<std::pair<const Value*, int>, SDNode*> ValueNodes;
+ /// CSEMap - This structure is used to memoize nodes, automatically performing
+ /// CSE with existing nodes with a duplicate is requested.
+ FoldingSet<SDNode> CSEMap;
public:
- SelectionDAG(TargetLowering &tli, MachineFunction &mf) : TLI(tli), MF(mf) {
+ SelectionDAG(TargetLowering &tli, MachineFunction &mf, MachineModuleInfo *mmi)
+ : TLI(tli), MF(mf), MMI(mmi) {
EntryNode = Root = getNode(ISD::EntryToken, MVT::Other);
}
~SelectionDAG();
MachineFunction &getMachineFunction() const { return MF; }
const TargetMachine &getTarget() const;
TargetLowering &getTargetLoweringInfo() const { return TLI; }
+ MachineModuleInfo *getMachineModuleInfo() const { return MMI; }
- /// viewGraph - Pop up a ghostview window with the DAG rendered using 'dot'.
+ /// viewGraph - Pop up a GraphViz/gv window with the DAG rendered using 'dot'.
///
void viewGraph();
+
+#ifndef NDEBUG
+ std::map<const SDNode *, std::string> NodeGraphAttrs;
+#endif
-
- typedef std::vector<SDNode*>::const_iterator allnodes_iterator;
- allnodes_iterator allnodes_begin() const { return AllNodes.begin(); }
- allnodes_iterator allnodes_end() const { return AllNodes.end(); }
-
+ /// clearGraphAttrs - Clear all previously defined node graph attributes.
+ /// Intended to be used from a debugging tool (eg. gdb).
+ void clearGraphAttrs();
+
+ /// setGraphAttrs - Set graph attributes for a node. (eg. "color=red".)
+ ///
+ void setGraphAttrs(const SDNode *N, const char *Attrs);
+
+ /// getGraphAttrs - Get graph attributes for a node. (eg. "color=red".)
+ /// Used from getNodeAttributes.
+ const std::string getGraphAttrs(const SDNode *N) const;
+
+ /// setGraphColor - Convenience for setting node color attribute.
+ ///
+ void setGraphColor(const SDNode *N, const char *Color);
+
+ typedef ilist<SDNode>::const_iterator allnodes_const_iterator;
+ allnodes_const_iterator allnodes_begin() const { return AllNodes.begin(); }
+ allnodes_const_iterator allnodes_end() const { return AllNodes.end(); }
+ typedef ilist<SDNode>::iterator allnodes_iterator;
+ allnodes_iterator allnodes_begin() { return AllNodes.begin(); }
+ allnodes_iterator allnodes_end() { return AllNodes.end(); }
+
/// getRoot - Return the root tag of the SelectionDAG.
///
const SDOperand &getRoot() const { return Root; }
/// certain types of nodes together, or eliminating superfluous nodes. When
/// the AfterLegalize argument is set to 'true', Combine takes care not to
/// generate any nodes that will be illegal on the target.
- void Combine(bool AfterLegalize);
+ void Combine(bool AfterLegalize, AliasAnalysis &AA);
/// Legalize - This transforms the SelectionDAG into a SelectionDAG that is
/// compatible with the target instruction selector, as indicated by the
void Legalize();
/// RemoveDeadNodes - This method deletes all unreachable nodes in the
- /// SelectionDAG, including nodes (like loads) that have uses of their token
- /// chain but no other uses and no side effect. If a node is passed in as an
- /// argument, it is used as the seed for node deletion.
- void RemoveDeadNodes(SDNode *N = 0);
-
- SDOperand getConstant(uint64_t Val, MVT::ValueType VT);
- SDOperand getTargetConstant(uint64_t Val, MVT::ValueType VT);
- SDOperand getConstantFP(double Val, MVT::ValueType VT);
- SDOperand getGlobalAddress(const GlobalValue *GV, MVT::ValueType VT);
- SDOperand getTargetGlobalAddress(const GlobalValue *GV, MVT::ValueType VT);
- SDOperand getFrameIndex(int FI, MVT::ValueType VT);
- SDOperand getTargetFrameIndex(int FI, MVT::ValueType VT);
- SDOperand getConstantPool(Constant *C, MVT::ValueType VT);
- SDOperand getTargetConstantPool(Constant *C, MVT::ValueType VT);
+ /// SelectionDAG.
+ void RemoveDeadNodes();
+
+ /// RemoveDeadNode - Remove the specified node from the system. If any of its
+ /// operands then becomes dead, remove them as well. The vector Deleted is
+ /// populated with nodes that are deleted.
+ void RemoveDeadNode(SDNode *N, std::vector<SDNode*> &Deleted);
+
+ /// DeleteNode - Remove the specified node from the system. This node must
+ /// have no referrers.
+ void DeleteNode(SDNode *N);
+
+ /// getVTList - Return an SDVTList that represents the list of values
+ /// specified.
+ SDVTList getVTList(MVT::ValueType VT);
+ SDVTList getVTList(MVT::ValueType VT1, MVT::ValueType VT2);
+ SDVTList getVTList(MVT::ValueType VT1, MVT::ValueType VT2,MVT::ValueType VT3);
+ SDVTList getVTList(const MVT::ValueType *VTs, unsigned NumVTs);
+
+ /// getNodeValueTypes - These are obsolete, use getVTList instead.
+ const MVT::ValueType *getNodeValueTypes(MVT::ValueType VT) {
+ return getVTList(VT).VTs;
+ }
+ const MVT::ValueType *getNodeValueTypes(MVT::ValueType VT1,
+ MVT::ValueType VT2) {
+ return getVTList(VT1, VT2).VTs;
+ }
+ const MVT::ValueType *getNodeValueTypes(MVT::ValueType VT1,MVT::ValueType VT2,
+ MVT::ValueType VT3) {
+ return getVTList(VT1, VT2, VT3).VTs;
+ }
+ const MVT::ValueType *getNodeValueTypes(std::vector<MVT::ValueType> &VTList) {
+ return getVTList(&VTList[0], VTList.size()).VTs;
+ }
+
+
+ //===--------------------------------------------------------------------===//
+ // Node creation methods.
+ //
+ SDOperand getString(const std::string &Val);
+ SDOperand getConstant(uint64_t Val, MVT::ValueType VT, bool isTarget = false);
+ SDOperand getTargetConstant(uint64_t Val, MVT::ValueType VT) {
+ return getConstant(Val, VT, true);
+ }
+ SDOperand getConstantFP(double Val, MVT::ValueType VT, bool isTarget = false);
+ SDOperand getTargetConstantFP(double Val, MVT::ValueType VT) {
+ return getConstantFP(Val, VT, true);
+ }
+ SDOperand getGlobalAddress(const GlobalValue *GV, MVT::ValueType VT,
+ int offset = 0, bool isTargetGA = false);
+ SDOperand getTargetGlobalAddress(const GlobalValue *GV, MVT::ValueType VT,
+ int offset = 0) {
+ return getGlobalAddress(GV, VT, offset, true);
+ }
+ SDOperand getFrameIndex(int FI, MVT::ValueType VT, bool isTarget = false);
+ SDOperand getTargetFrameIndex(int FI, MVT::ValueType VT) {
+ return getFrameIndex(FI, VT, true);
+ }
+ SDOperand getJumpTable(int JTI, MVT::ValueType VT, bool isTarget = false);
+ SDOperand getTargetJumpTable(int JTI, MVT::ValueType VT) {
+ return getJumpTable(JTI, VT, true);
+ }
+ SDOperand getConstantPool(Constant *C, MVT::ValueType VT,
+ unsigned Align = 0, int Offs = 0, bool isT=false);
+ SDOperand getTargetConstantPool(Constant *C, MVT::ValueType VT,
+ unsigned Align = 0, int Offset = 0) {
+ return getConstantPool(C, VT, Align, Offset, true);
+ }
+ SDOperand getConstantPool(MachineConstantPoolValue *C, MVT::ValueType VT,
+ unsigned Align = 0, int Offs = 0, bool isT=false);
+ SDOperand getTargetConstantPool(MachineConstantPoolValue *C,
+ MVT::ValueType VT, unsigned Align = 0,
+ int Offset = 0) {
+ return getConstantPool(C, VT, Align, Offset, true);
+ }
SDOperand getBasicBlock(MachineBasicBlock *MBB);
SDOperand getExternalSymbol(const char *Sym, MVT::ValueType VT);
+ SDOperand getTargetExternalSymbol(const char *Sym, MVT::ValueType VT);
SDOperand getValueType(MVT::ValueType);
SDOperand getRegister(unsigned Reg, MVT::ValueType VT);
// null) and that there should be a flag result.
SDOperand getCopyToReg(SDOperand Chain, unsigned Reg, SDOperand N,
SDOperand Flag) {
- std::vector<MVT::ValueType> VTs;
- VTs.push_back(MVT::Other);
- VTs.push_back(MVT::Flag);
- std::vector<SDOperand> Ops;
- Ops.push_back(Chain);
- Ops.push_back(getRegister(Reg, N.getValueType()));
- Ops.push_back(N);
- if (Flag.Val) Ops.push_back(Flag);
- return getNode(ISD::CopyToReg, VTs, Ops);
+ const MVT::ValueType *VTs = getNodeValueTypes(MVT::Other, MVT::Flag);
+ SDOperand Ops[] = { Chain, getRegister(Reg, N.getValueType()), N, Flag };
+ return getNode(ISD::CopyToReg, VTs, 2, Ops, Flag.Val ? 4 : 3);
+ }
+
+ // Similar to last getCopyToReg() except parameter Reg is a SDOperand
+ SDOperand getCopyToReg(SDOperand Chain, SDOperand Reg, SDOperand N,
+ SDOperand Flag) {
+ const MVT::ValueType *VTs = getNodeValueTypes(MVT::Other, MVT::Flag);
+ SDOperand Ops[] = { Chain, Reg, N, Flag };
+ return getNode(ISD::CopyToReg, VTs, 2, Ops, Flag.Val ? 4 : 3);
}
SDOperand getCopyFromReg(SDOperand Chain, unsigned Reg, MVT::ValueType VT) {
- std::vector<MVT::ValueType> ResultTys;
- ResultTys.push_back(VT);
- ResultTys.push_back(MVT::Other);
- std::vector<SDOperand> Ops;
- Ops.push_back(Chain);
- Ops.push_back(getRegister(Reg, VT));
- return getNode(ISD::CopyFromReg, ResultTys, Ops);
+ const MVT::ValueType *VTs = getNodeValueTypes(VT, MVT::Other);
+ SDOperand Ops[] = { Chain, getRegister(Reg, VT) };
+ return getNode(ISD::CopyFromReg, VTs, 2, Ops, 2);
}
// This version of the getCopyFromReg method takes an extra operand, which
// null) and that there should be a flag result.
SDOperand getCopyFromReg(SDOperand Chain, unsigned Reg, MVT::ValueType VT,
SDOperand Flag) {
- std::vector<MVT::ValueType> ResultTys;
- ResultTys.push_back(VT);
- ResultTys.push_back(MVT::Other);
- ResultTys.push_back(MVT::Flag);
- std::vector<SDOperand> Ops;
- Ops.push_back(Chain);
- Ops.push_back(getRegister(Reg, VT));
- if (Flag.Val) Ops.push_back(Flag);
- return getNode(ISD::CopyFromReg, ResultTys, Ops);
- }
-
- SDOperand getImplicitDef(SDOperand Chain, unsigned Reg, MVT::ValueType VT) {
- return getNode(ISD::ImplicitDef, MVT::Other, Chain, getRegister(Reg, VT));
- }
-
- /// getCall - Note that this destroys the vector of RetVals passed in.
- ///
- SDNode *getCall(std::vector<MVT::ValueType> &RetVals, SDOperand Chain,
- SDOperand Callee, bool isTailCall = false) {
- SDNode *NN = new SDNode(isTailCall ? ISD::TAILCALL : ISD::CALL, Chain,
- Callee);
- NN->setValueTypes(RetVals);
- AllNodes.push_back(NN);
- return NN;
- }
-
- /// getCall - This is identical to the one above, and should be used for calls
- /// where arguments are passed in physical registers. This destroys the
- /// RetVals and ArgsInRegs vectors.
- SDNode *getCall(std::vector<MVT::ValueType> &RetVals, SDOperand Chain,
- SDOperand Callee, std::vector<SDOperand> &ArgsInRegs,
- bool isTailCall = false) {
- ArgsInRegs.insert(ArgsInRegs.begin(), Callee);
- ArgsInRegs.insert(ArgsInRegs.begin(), Chain);
- SDNode *NN = new SDNode(isTailCall ? ISD::TAILCALL : ISD::CALL, ArgsInRegs);
- NN->setValueTypes(RetVals);
- AllNodes.push_back(NN);
- return NN;
+ const MVT::ValueType *VTs = getNodeValueTypes(VT, MVT::Other, MVT::Flag);
+ SDOperand Ops[] = { Chain, getRegister(Reg, VT), Flag };
+ return getNode(ISD::CopyFromReg, VTs, 3, Ops, Flag.Val ? 3 : 2);
}
SDOperand getCondCode(ISD::CondCode Cond);
/// getZeroExtendInReg - Return the expression required to zero extend the Op
/// value assuming it was the smaller SrcTy value.
SDOperand getZeroExtendInReg(SDOperand Op, MVT::ValueType SrcTy);
+
+ /// getCALLSEQ_START - Return a new CALLSEQ_START node, which always must have
+ /// a flag result (to ensure it's not CSE'd).
+ SDOperand getCALLSEQ_START(SDOperand Chain, SDOperand Op) {
+ const MVT::ValueType *VTs = getNodeValueTypes(MVT::Other, MVT::Flag);
+ SDOperand Ops[] = { Chain, Op };
+ return getNode(ISD::CALLSEQ_START, VTs, 2, Ops, 2);
+ }
/// getNode - Gets or creates the specified node.
///
SDOperand N1, SDOperand N2, SDOperand N3, SDOperand N4,
SDOperand N5);
SDOperand getNode(unsigned Opcode, MVT::ValueType VT,
- std::vector<SDOperand> &Children);
+ const SDOperand *Ops, unsigned NumOps);
SDOperand getNode(unsigned Opcode, std::vector<MVT::ValueType> &ResultTys,
- std::vector<SDOperand> &Ops);
-
+ const SDOperand *Ops, unsigned NumOps);
+ SDOperand getNode(unsigned Opcode, const MVT::ValueType *VTs, unsigned NumVTs,
+ const SDOperand *Ops, unsigned NumOps);
+ SDOperand getNode(unsigned Opcode, SDVTList VTs,
+ const SDOperand *Ops, unsigned NumOps);
+
/// getSetCC - Helper function to make it easier to build SetCC's if you just
/// have an ISD::CondCode instead of an SDOperand.
///
///
SDOperand getSelectCC(SDOperand LHS, SDOperand RHS,
SDOperand True, SDOperand False, ISD::CondCode Cond) {
- MVT::ValueType VT = True.getValueType();
- return getNode(ISD::SELECT_CC, VT, LHS, RHS, True, False,getCondCode(Cond));
+ return getNode(ISD::SELECT_CC, True.getValueType(), LHS, RHS, True, False,
+ getCondCode(Cond));
}
- /// getBR2Way_CC - Helper function to make it easier to build BRTWOWAY_CC
- /// nodes.
- ///
- SDOperand getBR2Way_CC(SDOperand Chain, SDOperand CCNode, SDOperand LHS,
- SDOperand RHS, SDOperand True, SDOperand False) {
- std::vector<SDOperand> Ops;
- Ops.push_back(Chain);
- Ops.push_back(CCNode);
- Ops.push_back(LHS);
- Ops.push_back(RHS);
- Ops.push_back(True);
- Ops.push_back(False);
- return getNode(ISD::BRTWOWAY_CC, MVT::Other, Ops);
- }
+ /// getVAArg - VAArg produces a result and token chain, and takes a pointer
+ /// and a source value as input.
+ SDOperand getVAArg(MVT::ValueType VT, SDOperand Chain, SDOperand Ptr,
+ SDOperand SV);
/// getLoad - Loads are not normal binary operators: their result type is not
/// determined by their operands, and they produce a value AND a token chain.
///
SDOperand getLoad(MVT::ValueType VT, SDOperand Chain, SDOperand Ptr,
- SDOperand SV);
- SDOperand getExtLoad(unsigned Opcode, MVT::ValueType VT, SDOperand Chain,
- SDOperand Ptr, SDOperand SV, MVT::ValueType EVT);
+ const Value *SV, int SVOffset, bool isVolatile=false,
+ unsigned Alignment=0);
+ SDOperand getExtLoad(ISD::LoadExtType ExtType, MVT::ValueType VT,
+ SDOperand Chain, SDOperand Ptr, const Value *SV,
+ int SVOffset, MVT::ValueType EVT, bool isVolatile=false,
+ unsigned Alignment=0);
+ SDOperand getIndexedLoad(SDOperand OrigLoad, SDOperand Base,
+ SDOperand Offset, ISD::MemIndexedMode AM);
+ SDOperand getVecLoad(unsigned Count, MVT::ValueType VT, SDOperand Chain,
+ SDOperand Ptr, SDOperand SV);
+
+ /// getStore - Helper function to build ISD::STORE nodes.
+ ///
+ SDOperand getStore(SDOperand Chain, SDOperand Val, SDOperand Ptr,
+ const Value *SV, int SVOffset, bool isVolatile=false,
+ unsigned Alignment=0);
+ SDOperand getTruncStore(SDOperand Chain, SDOperand Val, SDOperand Ptr,
+ const Value *SV, int SVOffset, MVT::ValueType TVT,
+ bool isVolatile=false, unsigned Alignment=0);
+ SDOperand getIndexedStore(SDOperand OrigStoe, SDOperand Base,
+ SDOperand Offset, ISD::MemIndexedMode AM);
// getSrcValue - construct a node to track a Value* through the backend
SDOperand getSrcValue(const Value* I, int offset = 0);
+ /// UpdateNodeOperands - *Mutate* the specified node in-place to have the
+ /// specified operands. If the resultant node already exists in the DAG,
+ /// this does not modify the specified node, instead it returns the node that
+ /// already exists. If the resultant node does not exist in the DAG, the
+ /// input node is returned. As a degenerate case, if you specify the same
+ /// input operands as the node already has, the input node is returned.
+ SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op);
+ SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op1, SDOperand Op2);
+ SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op1, SDOperand Op2,
+ SDOperand Op3);
+ SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op1, SDOperand Op2,
+ SDOperand Op3, SDOperand Op4);
+ SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op1, SDOperand Op2,
+ SDOperand Op3, SDOperand Op4, SDOperand Op5);
+ SDOperand UpdateNodeOperands(SDOperand N, SDOperand *Ops, unsigned NumOps);
/// SelectNodeTo - These are used for target selectors to *mutate* the
/// specified node to have the specified return type, Target opcode, and
/// operands. Note that target opcodes are stored as
- /// ISD::BUILTIN_OP_END+TargetOpcode in the node opcode field.
- void SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT);
- void SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT,
- SDOperand Op1);
- void SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT,
- SDOperand Op1, SDOperand Op2);
- void SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT,
- SDOperand Op1, SDOperand Op2, SDOperand Op3);
- void SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT,
- SDOperand Op1, SDOperand Op2, SDOperand Op3, SDOperand Op4);
- void SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT,
- SDOperand Op1, SDOperand Op2, SDOperand Op3, SDOperand Op4,
- SDOperand Op5);
- void SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT1,
- MVT::ValueType VT2, SDOperand Op1, SDOperand Op2);
- void SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT1,
- MVT::ValueType VT2, SDOperand Op1, SDOperand Op2,
- SDOperand Op3);
-
- SDOperand getTargetNode(unsigned Opcode, MVT::ValueType VT,
- SDOperand Op1) {
- return getNode(ISD::BUILTIN_OP_END+Opcode, VT, Op1);
- }
- SDOperand getTargetNode(unsigned Opcode, MVT::ValueType VT,
- SDOperand Op1, SDOperand Op2) {
- return getNode(ISD::BUILTIN_OP_END+Opcode, VT, Op1, Op2);
- }
- SDOperand getTargetNode(unsigned Opcode, MVT::ValueType VT1,
- MVT::ValueType VT2, SDOperand Op1, SDOperand Op2) {
- std::vector<MVT::ValueType> ResultTys;
- ResultTys.push_back(VT1);
- ResultTys.push_back(VT2);
- std::vector<SDOperand> Ops;
- Ops.push_back(Op1);
- Ops.push_back(Op2);
- return getNode(ISD::BUILTIN_OP_END+Opcode, ResultTys, Ops);
- }
- SDOperand getTargetNode(unsigned Opcode, MVT::ValueType VT,
- SDOperand Op1, SDOperand Op2, SDOperand Op3) {
- return getNode(ISD::BUILTIN_OP_END+Opcode, VT, Op1, Op2, Op3);
- }
- SDOperand getTargetNode(unsigned Opcode, MVT::ValueType VT,
- SDOperand Op1, SDOperand Op2, SDOperand Op3,
- SDOperand Op4) {
- return getNode(ISD::BUILTIN_OP_END+Opcode, VT, Op1, Op2, Op3, Op4);
- }
- SDOperand getTargetNode(unsigned Opcode, MVT::ValueType VT,
- SDOperand Op1, SDOperand Op2, SDOperand Op3,
- SDOperand Op4, SDOperand Op5) {
- return getNode(ISD::BUILTIN_OP_END+Opcode, VT, Op1, Op2, Op3, Op4, Op5);
- }
- SDOperand getTargetNode(unsigned Opcode, MVT::ValueType VT,
- std::vector<SDOperand> &Ops) {
- return getNode(ISD::BUILTIN_OP_END+Opcode, VT, Ops);
- }
- SDOperand getTargetNode(unsigned Opcode, MVT::ValueType VT1,
- MVT::ValueType VT2, std::vector<SDOperand> &Ops) {
- std::vector<MVT::ValueType> ResultTys;
- ResultTys.push_back(VT1);
- ResultTys.push_back(VT2);
- return getNode(ISD::BUILTIN_OP_END+Opcode, ResultTys, Ops);
- }
+ /// ISD::BUILTIN_OP_END+TargetOpcode in the node opcode field. The 0th value
+ /// of the resultant node is returned.
+ SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT);
+ SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT,
+ SDOperand Op1);
+ SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT,
+ SDOperand Op1, SDOperand Op2);
+ SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT,
+ SDOperand Op1, SDOperand Op2, SDOperand Op3);
+ SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT,
+ const SDOperand *Ops, unsigned NumOps);
+ SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT1,
+ MVT::ValueType VT2, SDOperand Op1, SDOperand Op2);
+ SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT1,
+ MVT::ValueType VT2, SDOperand Op1, SDOperand Op2,
+ SDOperand Op3);
+
+
+ /// getTargetNode - These are used for target selectors to create a new node
+ /// with specified return type(s), target opcode, and operands.
+ ///
+ /// Note that getTargetNode returns the resultant node. If there is already a
+ /// node of the specified opcode and operands, it returns that node instead of
+ /// the current one.
+ SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT);
+ SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT,
+ SDOperand Op1);
+ SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT,
+ SDOperand Op1, SDOperand Op2);
+ SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT,
+ SDOperand Op1, SDOperand Op2, SDOperand Op3);
+ SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT,
+ const SDOperand *Ops, unsigned NumOps);
+ SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1,
+ MVT::ValueType VT2, SDOperand Op1);
+ SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1,
+ MVT::ValueType VT2, SDOperand Op1, SDOperand Op2);
+ SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1,
+ MVT::ValueType VT2, SDOperand Op1, SDOperand Op2,
+ SDOperand Op3);
+ SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1,
+ MVT::ValueType VT2,
+ const SDOperand *Ops, unsigned NumOps);
+ SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1,
+ MVT::ValueType VT2, MVT::ValueType VT3,
+ SDOperand Op1, SDOperand Op2);
+ SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1,
+ MVT::ValueType VT2, MVT::ValueType VT3,
+ SDOperand Op1, SDOperand Op2, SDOperand Op3);
+ SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1,
+ MVT::ValueType VT2, MVT::ValueType VT3,
+ const SDOperand *Ops, unsigned NumOps);
/// ReplaceAllUsesWith - Modify anything using 'From' to use 'To' instead.
/// This can cause recursive merging of nodes in the DAG. Use the first
/// version if 'From' is known to have a single result, use the second
/// if you have two nodes with identical results, use the third otherwise.
///
- void ReplaceAllUsesWith(SDOperand From, SDOperand Op);
- void ReplaceAllUsesWith(SDNode *From, SDNode *To);
- void ReplaceAllUsesWith(SDNode *From, const std::vector<SDOperand> &To);
-
-
- /// DeleteNode - Remove the specified node from the system. This node must
- /// have no referrers.
- void DeleteNode(SDNode *N);
-
+ /// These methods all take an optional vector, which (if not null) is
+ /// populated with any nodes that are deleted from the SelectionDAG, due to
+ /// new equivalences that are discovered.
+ ///
+ void ReplaceAllUsesWith(SDOperand From, SDOperand Op,
+ std::vector<SDNode*> *Deleted = 0);
+ void ReplaceAllUsesWith(SDNode *From, SDNode *To,
+ std::vector<SDNode*> *Deleted = 0);
+ void ReplaceAllUsesWith(SDNode *From, const SDOperand *To,
+ std::vector<SDNode*> *Deleted = 0);
+
+ /// ReplaceAllUsesOfValueWith - Replace any uses of From with To, leaving
+ /// uses of other values produced by From.Val alone. The Deleted vector is
+ /// handled the same was as for ReplaceAllUsesWith, but it is required for
+ /// this method.
+ void ReplaceAllUsesOfValueWith(SDOperand From, SDOperand To,
+ std::vector<SDNode*> &Deleted);
+
+ /// AssignNodeIds - Assign a unique node id for each node in the DAG based on
+ /// their allnodes order. It returns the maximum id.
+ unsigned AssignNodeIds();
+
+ /// AssignTopologicalOrder - Assign a unique node id for each node in the DAG
+ /// based on their topological order. It returns the maximum id and a vector
+ /// of the SDNodes* in assigned order by reference.
+ unsigned AssignTopologicalOrder(std::vector<SDNode*> &TopOrder);
+
+ /// isCommutativeBinOp - Returns true if the opcode is a commutative binary
+ /// operation.
+ static bool isCommutativeBinOp(unsigned Opcode) {
+ switch (Opcode) {
+ case ISD::ADD:
+ case ISD::MUL:
+ case ISD::MULHU:
+ case ISD::MULHS:
+ case ISD::FADD:
+ case ISD::FMUL:
+ case ISD::AND:
+ case ISD::OR:
+ case ISD::XOR:
+ case ISD::ADDC:
+ case ISD::ADDE: return true;
+ default: return false;
+ }
+ }
+
void dump() const;
+ /// FoldSetCC - Constant fold a setcc to true or false.
+ SDOperand FoldSetCC(MVT::ValueType VT, SDOperand N1,
+ SDOperand N2, ISD::CondCode Cond);
+
private:
void RemoveNodeFromCSEMaps(SDNode *N);
SDNode *AddNonLeafNodeToCSEMaps(SDNode *N);
- void DeleteNodeIfDead(SDNode *N, void *NodeSet);
+ SDNode *FindModifiedNodeSlot(SDNode *N, SDOperand Op, void *&InsertPos);
+ SDNode *FindModifiedNodeSlot(SDNode *N, SDOperand Op1, SDOperand Op2,
+ void *&InsertPos);
+ SDNode *FindModifiedNodeSlot(SDNode *N, const SDOperand *Ops, unsigned NumOps,
+ void *&InsertPos);
+
+ void DeleteNodeNotInCSEMaps(SDNode *N);
+
+ // List of non-single value types.
+ std::list<std::vector<MVT::ValueType> > VTList;
- /// SimplifySetCC - Try to simplify a setcc built with the specified operands
- /// and cc. If unable to simplify it, return a null SDOperand.
- SDOperand SimplifySetCC(MVT::ValueType VT, SDOperand N1,
- SDOperand N2, ISD::CondCode Cond);
-
- /// SimplifySelectCC - Try to simplify a select_cc built with the specified
- /// operands and cc. This can be used to simplify both the select_cc node,
- /// and a select node whose first operand is a setcc.
- SDOperand SimplifySelectCC(SDOperand N1, SDOperand N2, SDOperand N3,
- SDOperand N4, ISD::CondCode CC);
-
// Maps to auto-CSE operations.
- std::map<std::pair<unsigned, MVT::ValueType>, SDNode *> NullaryOps;
- std::map<std::pair<unsigned, std::pair<SDOperand, MVT::ValueType> >,
- SDNode *> UnaryOps;
- std::map<std::pair<unsigned, std::pair<SDOperand, SDOperand> >,
- SDNode *> BinaryOps;
-
- std::map<std::pair<unsigned, MVT::ValueType>, RegisterSDNode*> RegNodes;
std::vector<CondCodeSDNode*> CondCodeNodes;
- std::map<std::pair<SDOperand, std::pair<SDOperand, MVT::ValueType> >,
- SDNode *> Loads;
-
- std::map<const GlobalValue*, SDNode*> GlobalValues;
- std::map<const GlobalValue*, SDNode*> TargetGlobalValues;
- std::map<std::pair<uint64_t, MVT::ValueType>, SDNode*> Constants;
- std::map<std::pair<uint64_t, MVT::ValueType>, SDNode*> TargetConstants;
- std::map<std::pair<uint64_t, MVT::ValueType>, SDNode*> ConstantFPs;
- std::map<int, SDNode*> FrameIndices, TargetFrameIndices;
- std::map<Constant *, SDNode*> ConstantPoolIndices;
- std::map<Constant *, SDNode*> TargetConstantPoolIndices;
- std::map<MachineBasicBlock *, SDNode*> BBNodes;
std::vector<SDNode*> ValueTypeNodes;
std::map<std::string, SDNode*> ExternalSymbols;
- std::map<std::pair<unsigned,
- std::pair<MVT::ValueType, std::vector<SDOperand> > >,
- SDNode*> OneResultNodes;
- std::map<std::pair<unsigned,
- std::pair<std::vector<MVT::ValueType>,
- std::vector<SDOperand> > >,
- SDNode*> ArbitraryNodes;
+ std::map<std::string, SDNode*> TargetExternalSymbols;
+ std::map<std::string, StringSDNode*> StringNodes;
};
template <> struct GraphTraits<SelectionDAG*> : public GraphTraits<SDNode*> {
}
};
-}
+} // end namespace llvm
#endif
projects / oota-llvm.git / blobdiff