1827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray/* 2827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray * Copyright (C) 2014 The Android Open Source Project 3827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray * 4827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray * Licensed under the Apache License, Version 2.0 (the "License"); 5827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray * you may not use this file except in compliance with the License. 6827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray * You may obtain a copy of the License at 7827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray * 8827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray * http://www.apache.org/licenses/LICENSE-2.0 9827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray * 10827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray * Unless required by applicable law or agreed to in writing, software 11827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray * distributed under the License is distributed on an "AS IS" BASIS, 12827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray * See the License for the specific language governing permissions and 14827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray * limitations under the License. 15827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray */ 16827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray 17827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray#ifndef ART_COMPILER_OPTIMIZING_SIDE_EFFECTS_ANALYSIS_H_ 18827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray#define ART_COMPILER_OPTIMIZING_SIDE_EFFECTS_ANALYSIS_H_ 19827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray 20827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray#include "nodes.h" 21827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray#include "optimization.h" 22827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray 23827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffraynamespace art { 24827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray 25827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffrayclass SideEffectsAnalysis : public HOptimization { 26827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray public: 27827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray explicit SideEffectsAnalysis(HGraph* graph) 287c3952f423b8213083d60596a5f0bf4237ca3f7bAndreas Gampe : HOptimization(graph, true, kSideEffectsAnalysisPassName), 29827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray graph_(graph), 30827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray block_effects_(graph->GetArena(), graph->GetBlocks().Size(), SideEffects::None()), 31827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray loop_effects_(graph->GetArena(), graph->GetBlocks().Size(), SideEffects::None()) {} 32827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray 33827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray SideEffects GetLoopEffects(HBasicBlock* block) const; 34827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray SideEffects GetBlockEffects(HBasicBlock* block) const; 35827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray 36827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray // Compute side effects of individual blocks and loops. 37827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray void Run(); 38827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray 39827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray bool HasRun() const { return has_run_; } 40827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray 417c3952f423b8213083d60596a5f0bf4237ca3f7bAndreas Gampe static constexpr const char* kSideEffectsAnalysisPassName = "SideEffects"; 427c3952f423b8213083d60596a5f0bf4237ca3f7bAndreas Gampe 43827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray private: 44827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray void UpdateLoopEffects(HLoopInformation* info, SideEffects effects); 45827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray 46827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray HGraph* graph_; 47827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray 48827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray // Checked in debug build, to ensure the pass has been run prior to 49827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray // running a pass that depends on it. 50827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray bool has_run_ = false; 51827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray 52827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray // Side effects of individual blocks, that is the union of the side effects 53827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray // of the instructions in the block. 54827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray GrowableArray<SideEffects> block_effects_; 55827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray 56827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray // Side effects of loops, that is the union of the side effects of the 57827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray // blocks contained in that loop. 58827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray GrowableArray<SideEffects> loop_effects_; 59827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray 60827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray ART_FRIEND_TEST(GVNTest, LoopSideEffects); 61827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray DISALLOW_COPY_AND_ASSIGN(SideEffectsAnalysis); 62827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray}; 63827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray 64827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray} // namespace art 65827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray 66827eedbfa882496407375f22b08243a38a5bd53bNicolas Geoffray#endif // ART_COMPILER_OPTIMIZING_SIDE_EFFECTS_ANALYSIS_H_ 67