141 lines
4.9 KiB
C++
141 lines
4.9 KiB
C++
#pragma once
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#include <llvm/ADT/ilist.h>
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#include <llvm/ADT/ilist_node.h>
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#include <bitset>
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#include "BasicBlock.h"
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#include "types.h"
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#include "ast.h"
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#include "icode.h"
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#include "locident.h"
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#include "error.h"
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#include "graph.h"
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#include "bundle.h"
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#include "StackFrame.h"
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/* PROCEDURE NODE */
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struct CALL_GRAPH;
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namespace llvm
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{
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// Traits for intrusive list of basic blocks...
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template<>
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struct ilist_traits<BB> : public ilist_default_traits<BB>
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{
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// createSentinel is used to get hold of the node that marks the end of the
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// list... (same trick used here as in ilist_traits<Instruction>)
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BB *createSentinel() const {
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return static_cast<BB*>(&Sentinel);
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}
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static void destroySentinel(BB*) {}
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BB *provideInitialHead() const { return createSentinel(); }
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BB *ensureHead(BB*) const { return createSentinel(); }
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static void noteHead(BB*, BB*) {}
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//static ValueSymbolTable *getSymTab(Function *ItemParent);
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private:
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mutable ilist_half_node<BB> Sentinel;
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};
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}
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struct FunctionType
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{
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bool m_vararg;
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bool isVarArg() const {return m_vararg;}
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};
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struct Assignment
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{
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COND_EXPR *lhs;
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COND_EXPR *rhs;
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};
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struct Function : public llvm::ilist_node<Function>
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{
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typedef llvm::iplist<BB> BasicBlockListType;
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// BasicBlock iterators...
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typedef BasicBlockListType::iterator iterator;
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typedef BasicBlockListType::const_iterator const_iterator;
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private:
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BasicBlockListType BasicBlocks; ///< The basic blocks
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public:
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dword procEntry; /* label number */
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std::string name; /* Meaningful name for this proc */
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STATE state; /* Entry state */
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Int depth; /* Depth at which we found it - for printing */
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flags32 flg; /* Combination of Icode & Proc flags */
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int16 cbParam; /* Probable no. of bytes of parameters */
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STKFRAME args; /* Array of arguments */
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LOCAL_ID localId; /* Local identifiers */
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ID retVal; /* Return value - identifier */
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/* Icodes and control flow graph */
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CIcodeRec Icode; /* Object with ICODE records */
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std::vector<BB*> m_cfg; /* Ptr. to BB list/CFG */
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std::vector<BB*> m_dfsLast;
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std::vector<BB*> heldBBs;
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//BB * *dfsLast; /* Array of pointers to BBs in dfsLast
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// * (reverse postorder) order */
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Int numBBs; /* Number of BBs in the graph cfg */
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boolT hasCase; /* Procedure has a case node */
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/* For interprocedural live analysis */
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std::bitset<32> liveIn; /* Registers used before defined */
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std::bitset<32> liveOut; /* Registers that may be used in successors */
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bool liveAnal; /* Procedure has been analysed already */
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Function(void *ty=0) : procEntry(0),depth(0),flg(0),cbParam(0),m_cfg(0),m_dfsLast(0),numBBs(0),
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hasCase(false),liveIn(0),liveOut(0),liveAnal(0)//,next(0),prev(0)
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{
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}
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public:
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static Function *Create(void *ty=0,int Linkage=0,const std::string &nm="",void *module=0)
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{
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Function *r=new Function(ty);
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r->name = nm;
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return r;
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}
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void compoundCond();
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void writeProcComments();
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void lowLevelAnalysis();
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void bindIcodeOff();
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void dataFlow(std::bitset<32> &liveOut);
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void compressCFG();
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void highLevelGen();
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void structure(derSeq *derivedG);
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derSeq *checkReducibility();
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void createCFG();
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void markImpure();
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void findImmedDom();
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void FollowCtrl(CALL_GRAPH *pcallGraph, STATE *pstate);
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void process_operands(ICODE &pIcode, STATE *pstate);
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boolT process_JMP(ICODE &pIcode, STATE *pstate, CALL_GRAPH *pcallGraph);
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boolT process_CALL(ICODE &pIcode, CALL_GRAPH *pcallGraph, STATE *pstate);
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void displayCFG();
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void freeCFG();
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void codeGen(std::ostream &fs);
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void displayStats();
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void mergeFallThrough(BB *pBB);
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void structIfs();
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void structLoops(derSeq *derivedG);
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void buildCFG();
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void controlFlowAnalysis();
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void newRegArg(iICODE picode, iICODE ticode);
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protected:
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// TODO: replace those with friend visitor ?
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void propLongReg(Int loc_ident_idx, const ID &pLocId);
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void propLongStk(Int i, const ID &pLocId);
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void propLongGlb(Int i, const ID &pLocId);
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int findBackwarLongDefs(int loc_ident_idx, const ID &pLocId, iICODE iter);
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int findForwardLongUses(int loc_ident_idx, const ID &pLocId, iICODE beg);
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void structCases();
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void findExps();
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void genDU1();
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void elimCondCodes();
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void liveRegAnalysis(std::bitset<32> &in_liveOut);
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void findIdioms();
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void propLong();
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void genLiveKtes();
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byte findDerivedSeq (derSeq *derivedGi);
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bool nextOrderGraph(derSeq *derivedGi);
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};
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