1 /* 2 * Copyright (C) 2009 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef DALVIK_VM_LOOP_H_ 18 #define DALVIK_VM_LOOP_H_ 19 20 #include "Dalvik.h" 21 #include "CompilerInternals.h" 22 23 typedef struct LoopAnalysis { 24 BitVector *isIndVarV; // length == numSSAReg 25 GrowableList *ivList; // induction variables 26 GrowableList *arrayAccessInfo; // hoisted checks for array accesses 27 int numBasicIV; // number of basic induction variables 28 int ssaBIV; // basic IV in SSA name 29 bool isCountUpLoop; // count up or down loop 30 Opcode loopBranchOpcode; // OP_IF_XXX for the loop back branch 31 int endConditionReg; // vB in "vA op vB" 32 LIR *branchToBody; // branch over to the body from entry 33 LIR *branchToPCR; // branch over to the PCR cell 34 bool bodyIsClean; // loop body cannot throw any exceptions 35 } LoopAnalysis; 36 37 bool dvmCompilerFilterLoopBlocks(CompilationUnit *cUnit); 38 39 /* 40 * An unexecuted code path may contain unresolved fields or classes. Before we 41 * have a quiet resolver we simply bail out of the loop compilation mode. 42 */ 43 #define BAIL_LOOP_COMPILATION() if (cUnit->jitMode == kJitLoop) { \ 44 cUnit->quitLoopMode = true; \ 45 return false; \ 46 } 47 48 #endif // DALVIK_VM_LOOP_H_ 49