| //===- SparcV9InstrForest.h - SparcV9 BURG Instruction Selector Trees -----===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file was developed by the LLVM research group and is distributed under |
| // the University of Illinois Open Source License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // A forest of BURG instruction trees (class InstrForest) which represents |
| // a function to the BURG-based instruction selector, and a bunch of constants |
| // and declarations used by the generated BURG code. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef SPARCV9INSTRFOREST_H |
| #define SPARCV9INSTRFOREST_H |
| |
| #include "llvm/Instruction.h" |
| using namespace llvm; |
| |
| /// OpLabel values for special-case nodes created for instruction selection. |
| /// All op-labels not defined here are identical to the instruction |
| /// opcode returned by Instruction::getOpcode(). |
| /// |
| static const int |
| InvalidOp = -1, |
| VRegListOp = 97, |
| VRegNodeOp = 98, |
| ConstantNodeOp = 99, |
| LabelNodeOp = 100, |
| RetValueOp = 100 + Instruction::Ret, // 101 |
| BrCondOp = 100 + Instruction::Br, // 102 |
| BAndOp = 100 + Instruction::And, // 111 |
| BOrOp = 100 + Instruction::Or, // 112 |
| BXorOp = 100 + Instruction::Xor, // 113 |
| BNotOp = 200 + Instruction::Xor, // 213 |
| NotOp = 300 + Instruction::Xor, // 313 |
| SetCCOp = 100 + Instruction::SetEQ, // 114 |
| AllocaN = 100 + Instruction::Alloca, // 122 |
| LoadIdx = 100 + Instruction::Load, // 123 |
| GetElemPtrIdx = 100 + Instruction::GetElementPtr, // 125 |
| ToBoolTy = 100 + Instruction::Cast; // 127 |
| static const int |
| ToUByteTy = ToBoolTy + 1, |
| ToSByteTy = ToBoolTy + 2, |
| ToUShortTy = ToBoolTy + 3, |
| ToShortTy = ToBoolTy + 4, |
| ToUIntTy = ToBoolTy + 5, |
| ToIntTy = ToBoolTy + 6, |
| ToULongTy = ToBoolTy + 7, |
| ToLongTy = ToBoolTy + 8, |
| ToFloatTy = ToBoolTy + 9, |
| ToDoubleTy = ToBoolTy + 10, |
| ToArrayTy = ToBoolTy + 11, |
| ToPointerTy = ToBoolTy + 12; |
| |
| /// Data types needed by BURG |
| /// |
| typedef int OpLabel; |
| typedef int StateLabel; |
| |
| /// Declarations of data and functions created by BURG |
| /// |
| namespace llvm { |
| class InstrTreeNode; |
| }; |
| extern short* burm_nts[]; |
| extern StateLabel burm_label (InstrTreeNode* p); |
| extern StateLabel burm_state (OpLabel op, StateLabel leftState, |
| StateLabel rightState); |
| extern StateLabel burm_rule (StateLabel state, int goalNT); |
| extern InstrTreeNode** burm_kids (InstrTreeNode* p, int eruleno, |
| InstrTreeNode* kids[]); |
| extern void printcover (InstrTreeNode*, int, int); |
| extern void printtree (InstrTreeNode*); |
| extern int treecost (InstrTreeNode*, int, int); |
| extern void printMatches (InstrTreeNode*); |
| |
| namespace llvm { |
| |
| /// InstrTreeNode - A single tree node in the instruction tree used for |
| /// instruction selection via BURG. |
| /// |
| class InstrTreeNode { |
| InstrTreeNode(const InstrTreeNode &); // DO NOT IMPLEMENT |
| void operator=(const InstrTreeNode &); // DO NOT IMPLEMENT |
| public: |
| enum InstrTreeNodeType { NTInstructionNode, |
| NTVRegListNode, |
| NTVRegNode, |
| NTConstNode, |
| NTLabelNode }; |
| InstrTreeNode* LeftChild; |
| InstrTreeNode* RightChild; |
| InstrTreeNode* Parent; |
| OpLabel opLabel; |
| StateLabel state; |
| |
| protected: |
| InstrTreeNodeType treeNodeType; |
| Value* val; |
| |
| public: |
| InstrTreeNode(InstrTreeNodeType nodeType, Value* _val) |
| : treeNodeType(nodeType), val(_val) { |
| LeftChild = RightChild = Parent = 0; |
| opLabel = InvalidOp; |
| } |
| virtual ~InstrTreeNode() { |
| delete LeftChild; |
| delete RightChild; |
| } |
| InstrTreeNodeType getNodeType () const { return treeNodeType; } |
| Value* getValue () const { return val; } |
| inline OpLabel getOpLabel () const { return opLabel; } |
| inline InstrTreeNode *leftChild () const { return LeftChild; } |
| inline InstrTreeNode *parent () const { return Parent; } |
| |
| // If right child is a list node, recursively get its *left* child |
| inline InstrTreeNode* rightChild() const { |
| return (!RightChild ? 0 : |
| (RightChild->getOpLabel() == VRegListOp |
| ? RightChild->LeftChild : RightChild)); |
| } |
| void dump(int dumpChildren, int indent) const; |
| protected: |
| virtual void dumpNode(int indent) const = 0; |
| friend class InstrForest; |
| }; |
| |
| } // end namespace llvm. |
| |
| #endif |