115 lines
4.5 KiB
C++
115 lines
4.5 KiB
C++
#pragma once
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#include <list>
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#include <vector>
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#include <string>
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#include <llvm/ADT/ilist.h>
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#include <llvm/ADT/ilist_node.h>
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#include "types.h"
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#include "graph.h"
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#include "icode.h"
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/* Basic block (BB) node definition */
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struct Function;
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class CIcodeRec;
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struct BB;
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struct interval;
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struct ICODE;
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typedef union
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{
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dword ip; /* Out edge icode address */
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BB * BBptr; /* Out edge pointer to next BB */
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interval *intPtr; /* Out edge ptr to next interval*/
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} TYPEADR_TYPE;
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struct BB : public llvm::ilist_node<BB>
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{
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private:
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BB(const BB&);
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BB() : nodeType(0),traversed(0),start(0),length(0),
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numHlIcodes(0),flg(0),
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inEdges(0),
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edges(0),beenOnH(0),inEdgeCount(0),reachingInt(0),
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inInterval(0),correspInt(0),liveUse(0),def(0),liveIn(0),liveOut(0),
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dfsFirstNum(0),dfsLastNum(0),immedDom(0),ifFollow(0),loopType(0),latchNode(0),
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numBackEdges(0),loopHead(0),loopFollow(0),caseHead(0),caseTail(0),index(0)
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{
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}
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//friend class SymbolTableListTraits<BB, Function>;
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//Int numInEdges; /* Number of in edges */
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public:
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Int begin();
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iICODE begin2();
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iICODE end2();
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Int end();
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Int rbegin();
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Int rend();
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ICODE &front();
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ICODE &back();
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size_t size();
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byte nodeType; /* Type of node */
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int traversed; /* Boolean: traversed yet? */
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Int start; /* First instruction offset */
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Int length; /* No. of instructions this BB */
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Int numHlIcodes; /* No. of high-level icodes */
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flags32 flg; /* BB flags */
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/* In edges and out edges */
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std::vector<BB *> inEdges; // does not own held pointers
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//Int numOutEdges; /* Number of out edges */
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std::vector<TYPEADR_TYPE> edges;/* Array of ptrs. to out edges */
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/* For interval construction */
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Int beenOnH; /* #times been on header list H */
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Int inEdgeCount; /* #inEdges (to find intervals) */
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BB * reachingInt; /* Reaching interval header */
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interval *inInterval; /* Node's interval */
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/* For derived sequence construction */
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interval *correspInt; /* Corresponding interval in
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* derived graph Gi-1 */
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/* For live register analysis
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* LiveIn(b) = LiveUse(b) U (LiveOut(b) - Def(b)) */
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dword liveUse; /* LiveUse(b) */
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dword def; /* Def(b) */
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dword liveIn; /* LiveIn(b) */
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dword liveOut; /* LiveOut(b) */
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/* For structuring analysis */
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Int dfsFirstNum; /* DFS #: first visit of node */
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Int dfsLastNum; /* DFS #: last visit of node */
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Int immedDom; /* Immediate dominator (dfsLast
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* index) */
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Int ifFollow; /* node that ends the if */
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Int loopType; /* Type of loop (if any) */
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Int latchNode; /* latching node of the loop */
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Int numBackEdges; /* # of back edges */
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Int loopHead; /* most nested loop head to which
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* thcis node belongs (dfsLast) */
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Int loopFollow; /* node that follows the loop */
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Int caseHead; /* most nested case to which this
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node belongs (dfsLast) */
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Int caseTail; /* tail node for the case */
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Int index; /* Index, used in several ways */
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static BB *Create(void *ctx=0,const std::string &s="",Function *parent=0,BB *insertBefore=0);
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static BB *Create(Int start, Int ip, byte nodeType, Int numOutEdges, Function * parent);
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void writeCode(Int indLevel, Function *pProc, Int *numLoc, Int latchNode, Int ifFollow);
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void mergeFallThrough(CIcodeRec &Icode);
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void dfsNumbering(std::vector<BB *> &dfsLast, Int *first, Int *last);
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void displayDfs();
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void display();
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/// getParent - Return the enclosing method, or null if none
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///
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const Function *getParent() const { return Parent; }
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Function *getParent() { return Parent; }
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void writeBB(ICODE *hli, Int lev, Function *pProc, Int *numLoc);
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BB *rmJMP(Int marker, BB *pBB);
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private:
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Function *Parent;
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};
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