123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132 |
- #pragma once
- #include <list>
- #include <vector>
- #include <bitset>
- #include <string>
- #include <llvm/ADT/ilist.h>
- #include <llvm/ADT/ilist_node.h>
- #include <boost/range.hpp>
- #include "icode.h"
- #include "types.h"
- #include "graph.h"
- //#include "icode.h"
- /* Basic block (BB) node definition */
- struct Function;
- class CIcodeRec;
- struct BB;
- struct LOCAL_ID;
- struct interval;
- struct TYPEADR_TYPE
- {
- uint32_t ip; /* Out edge icode address */
- BB * BBptr; /* Out edge pointer to next BB */
- interval *intPtr; /* Out edge ptr to next interval*/
- };
- struct BB : public llvm::ilist_node<BB>
- {
- private:
- BB(const BB&);
- BB() : nodeType(0),traversed(DFS_NONE),
- numHlIcodes(0),flg(0),
- inEdges(0),
- edges(0),beenOnH(0),inEdgeCount(0),reachingInt(0),
- inInterval(0),correspInt(0),liveUse(0),def(0),liveIn(0),liveOut(0),
- dfsFirstNum(0),dfsLastNum(0),immedDom(0),ifFollow(0),loopType(0),latchNode(0),
- numBackEdges(0),loopHead(0),loopFollow(0),caseHead(0),caseTail(0),index(0)
- {
- }
- //friend class SymbolTableListTraits<BB, Function>;
- typedef boost::iterator_range<iICODE> rCODE;
- rCODE instructions;
- public:
- struct ValidFunctor
- {
- bool operator()(BB *p) {return p->valid();}
- };
- iICODE begin();
- iICODE end() const;
- riICODE rbegin();
- riICODE rend();
- ICODE &front();
- ICODE &back();
- size_t size();
- uint8_t nodeType; /* Type of node */
- eDFS traversed; /* last traversal id is held here traversed yet? */
- int numHlIcodes; /* No. of high-level icodes */
- uint32_t flg; /* BB flags */
- /* In edges and out edges */
- std::vector<BB *> inEdges; // does not own held pointers
- //int numOutEdges; /* Number of out edges */
- std::vector<TYPEADR_TYPE> edges;/* Array of ptrs. to out edges */
- /* For interval construction */
- int beenOnH; /* #times been on header list H */
- int inEdgeCount; /* #inEdges (to find intervals) */
- BB * reachingInt; /* Reaching interval header */
- interval *inInterval; /* Node's interval */
- /* For derived sequence construction */
- interval *correspInt; /* Corresponding interval in
- * derived graph Gi-1 */
- /* For live register analysis
- * LiveIn(b) = LiveUse(b) U (LiveOut(b) - Def(b)) */
- std::bitset<32> liveUse; /* LiveUse(b) */
- std::bitset<32> def; /* Def(b) */
- std::bitset<32> liveIn; /* LiveIn(b) */
- std::bitset<32> liveOut; /* LiveOut(b) */
- /* For structuring analysis */
- int dfsFirstNum; /* DFS #: first visit of node */
- int dfsLastNum; /* DFS #: last visit of node */
- int immedDom; /* Immediate dominator (dfsLast
- * index) */
- int ifFollow; /* node that ends the if */
- int loopType; /* Type of loop (if any) */
- int latchNode; /* latching node of the loop */
- int numBackEdges; /* # of back edges */
- int loopHead; /* most nested loop head to which
- * thcis node belongs (dfsLast) */
- int loopFollow; /* node that follows the loop */
- int caseHead; /* most nested case to which this
- node belongs (dfsLast) */
- int caseTail; /* tail node for the case */
- int index; /* Index, used in several ways */
- static BB * Create(void *ctx=0,const std::string &s="",Function *parent=0,BB *insertBefore=0);
- static BB * Create(int start, int ip, uint8_t nodeType, int numOutEdges, Function * parent);
- static BB * Create(iICODE start, iICODE fin, uint8_t _nodeType, int numOutEdges, Function *parent);
- void writeCode(int indLevel, Function *pProc, int *numLoc, int latchNode, int ifFollow);
- void mergeFallThrough(CIcodeRec &Icode);
- void dfsNumbering(std::vector<BB *> &dfsLast, int *first, int *last);
- void displayDfs();
- void display();
- /// getParent - Return the enclosing method, or null if none
- ///
- const Function *getParent() const { return Parent; }
- Function *getParent() { return Parent; }
- void writeBB(std::ostream &ostr, int lev, Function *pProc, int *numLoc);
- BB * rmJMP(int marker, BB *pBB);
- void genDU1();
- int findBBExps(LOCAL_ID &locals, Function *f);
- bool valid() {return 0==(flg & INVALID_BB); }
- bool wasTraversedAtLevel(int l) const {return traversed==l;}
- ICODE * writeLoopHeader(int &indLevel, Function* pProc, int *numLoc, BB *&latch, boolT &repCond);
- void addOutEdge(uint32_t ip) // TODO: fix this
- {
- edges[0].ip = ip;
- }
- void RemoveUnusedDefs(eReg regi, int defRegIdx, iICODE picode);
- private:
- bool FindUseBeforeDef(eReg regi, int defRegIdx, iICODE start_at);
- void ProcessUseDefForFunc(eReg regi, int defRegIdx, iICODE picode);
- bool isEndOfPath(int latch_node_idx) const;
- Function *Parent;
- };
|