vm/compiler/Loop.h

/*
 * Copyright (C) 2009 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef _DALVIK_VM_LOOP
#define _DALVIK_VM_LOOP

#include "Dalvik.h"
#include "CompilerInternals.h"

typedef struct LoopAnalysis {
    BitVector *isIndVarV;               // length == numSSAReg
    GrowableList *ivList;               // induction variables
    GrowableList *arrayAccessInfo;      // hoisted checks for array accesses
    int numBasicIV;                     // number of basic induction variables
    int ssaBIV;                         // basic IV in SSA name
    bool isCountUpLoop;                 // count up or down loop
    Opcode loopBranchOpcode;            // OP_IF_XXX for the loop back branch
    int endConditionReg;                // vB in "vA op vB"
    LIR *branchToBody;                  // branch over to the body from entry
    LIR *branchToPCR;                   // branch over to the PCR cell
    bool bodyIsClean;                   // loop body cannot throw any exceptions
} LoopAnalysis;

#endif /* _DALVIK_VM_LOOP */