branch_result.cpp

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/*
        Copyright (C) 1997 CFU Corporation

        File: branch_result.cpp
        Description: branch result
        Author: Chao-yinig Fu
        Date: Oct. 31, 2000

        ^..^
        (00)

         $__$
        <~00~>
         (oo)
          ||

        ```````
        C ^|^ D
         \ O /
*/

#include "branch_result.h"
#include "my_mem_db.h"

//
// Parameter
//      ip: ip of this mop
//      correct: 1=correct, 0=not correct
void Profile_Branch::record(int ip,int correct)
{
        int index=ip>>_b;
        index=index%MAX_NUM_OF_BR;

        Branch_Result *br=&_br[index];
        int this_ip=br->ip();

        if(this_ip==-1)
        {
                br->set_ip(ip);
        }
        else if(this_ip!=ip)    // search the bucket
        {
                Branch_Result *prev_br=br;
                Branch_Result *this_br=br->next();
                for(;this_br!=NULL;this_br=this_br->next())
                {
                        if(this_br->ip()==ip)
                        {
                                break;
                        }
                        prev_br=this_br;
                }

                if(this_br!=NULL)
                {
                        br=this_br;
                }
                else
                {
                        Branch_Result *new_br=new Branch_Result();
                        new_br->set_ip(ip);
                        prev_br->set_next(new_br);
                        br=new_br;
                }
        }

        br->inc_access();
        if(correct==1)
        {
                br->inc_br_cor();
        }
        else
        {
                br->inc_br_incor();
        }
}

void Profile_Branch::print(FILE *f,A_Proc *code_database)
{
        for(int i=0;i<MAX_NUM_OF_BR;i++)
        {
                Branch_Result *br=&_br[i];
                int ip=br->ip();

                if(ip!=-1)
                {
                        Multi_Op *mop=code_database->find_mop_by_ip(ip);
                        assert(mop!=NULL);
                        Block_List *bb=mop->bb();
                        assert(bb!=NULL);
                        int bbid=bb->bbid();
                        A_Proc *proc=bb->parent();
                        assert(proc!=NULL);

                        br->print(f);
                        fprintf(f," [%s %d %d]\n",proc->name(),bbid,mop->has_branch());

                        for(Branch_Result *next_br=br->next();next_br!=NULL;next_br=next_br->next())
                        {
                                next_br->print(f);
                        }
                }
        }
}

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