/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "instruction_builder.h"
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#include "art_method-inl.h"
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#include "base/arena_bit_vector.h"
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#include "base/bit_vector-inl.h"
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#include "base/logging.h"
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#include "block_builder.h"
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#include "class_linker-inl.h"
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#include "code_generator.h"
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#include "data_type-inl.h"
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#include "dex/bytecode_utils.h"
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#include "dex/dex_instruction-inl.h"
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#include "driver/dex_compilation_unit.h"
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#include "driver/compiler_options.h"
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#include "imtable-inl.h"
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#include "mirror/dex_cache.h"
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#include "oat_file.h"
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#include "optimizing_compiler_stats.h"
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#include "quicken_info.h"
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#include "scoped_thread_state_change-inl.h"
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#include "sharpening.h"
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#include "ssa_builder.h"
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#include "well_known_classes.h"
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namespace art {
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HInstructionBuilder::HInstructionBuilder(HGraph* graph,
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HBasicBlockBuilder* block_builder,
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SsaBuilder* ssa_builder,
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const DexFile* dex_file,
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const CodeItemDebugInfoAccessor& accessor,
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DataType::Type return_type,
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const DexCompilationUnit* dex_compilation_unit,
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const DexCompilationUnit* outer_compilation_unit,
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CodeGenerator* code_generator,
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ArrayRef<const uint8_t> interpreter_metadata,
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OptimizingCompilerStats* compiler_stats,
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VariableSizedHandleScope* handles,
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ScopedArenaAllocator* local_allocator)
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: allocator_(graph->GetAllocator()),
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graph_(graph),
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handles_(handles),
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dex_file_(dex_file),
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code_item_accessor_(accessor),
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return_type_(return_type),
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block_builder_(block_builder),
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ssa_builder_(ssa_builder),
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code_generator_(code_generator),
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dex_compilation_unit_(dex_compilation_unit),
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outer_compilation_unit_(outer_compilation_unit),
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quicken_info_(interpreter_metadata),
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compilation_stats_(compiler_stats),
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local_allocator_(local_allocator),
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locals_for_(local_allocator->Adapter(kArenaAllocGraphBuilder)),
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current_block_(nullptr),
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current_locals_(nullptr),
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latest_result_(nullptr),
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current_this_parameter_(nullptr),
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loop_headers_(local_allocator->Adapter(kArenaAllocGraphBuilder)),
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class_cache_(std::less<dex::TypeIndex>(), local_allocator->Adapter(kArenaAllocGraphBuilder)) {
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loop_headers_.reserve(kDefaultNumberOfLoops);
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}
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HBasicBlock* HInstructionBuilder::FindBlockStartingAt(uint32_t dex_pc) const {
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return block_builder_->GetBlockAt(dex_pc);
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}
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inline ScopedArenaVector<HInstruction*>* HInstructionBuilder::GetLocalsFor(HBasicBlock* block) {
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ScopedArenaVector<HInstruction*>* locals = &locals_for_[block->GetBlockId()];
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const size_t vregs = graph_->GetNumberOfVRegs();
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if (locals->size() == vregs) {
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return locals;
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}
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return GetLocalsForWithAllocation(block, locals, vregs);
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}
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ScopedArenaVector<HInstruction*>* HInstructionBuilder::GetLocalsForWithAllocation(
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HBasicBlock* block,
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ScopedArenaVector<HInstruction*>* locals,
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const size_t vregs) {
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DCHECK_NE(locals->size(), vregs);
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locals->resize(vregs, nullptr);
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if (block->IsCatchBlock()) {
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// We record incoming inputs of catch phis at throwing instructions and
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// must therefore eagerly create the phis. Phis for undefined vregs will
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// be deleted when the first throwing instruction with the vreg undefined
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// is encountered. Unused phis will be removed by dead phi analysis.
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for (size_t i = 0; i < vregs; ++i) {
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// No point in creating the catch phi if it is already undefined at
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// the first throwing instruction.
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HInstruction* current_local_value = (*current_locals_)[i];
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if (current_local_value != nullptr) {
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HPhi* phi = new (allocator_) HPhi(
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allocator_,
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i,
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0,
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current_local_value->GetType());
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block->AddPhi(phi);
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(*locals)[i] = phi;
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}
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}
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}
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return locals;
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}
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inline HInstruction* HInstructionBuilder::ValueOfLocalAt(HBasicBlock* block, size_t local) {
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ScopedArenaVector<HInstruction*>* locals = GetLocalsFor(block);
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return (*locals)[local];
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}
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void HInstructionBuilder::InitializeBlockLocals() {
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current_locals_ = GetLocalsFor(current_block_);
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if (current_block_->IsCatchBlock()) {
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// Catch phis were already created and inputs collected from throwing sites.
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if (kIsDebugBuild) {
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// Make sure there was at least one throwing instruction which initialized
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// locals (guaranteed by HGraphBuilder) and that all try blocks have been
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// visited already (from HTryBoundary scoping and reverse post order).
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bool catch_block_visited = false;
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for (HBasicBlock* current : graph_->GetReversePostOrder()) {
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if (current == current_block_) {
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catch_block_visited = true;
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} else if (current->IsTryBlock()) {
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const HTryBoundary& try_entry = current->GetTryCatchInformation()->GetTryEntry();
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if (try_entry.HasExceptionHandler(*current_block_)) {
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DCHECK(!catch_block_visited) << "Catch block visited before its try block.";
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}
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}
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}
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DCHECK_EQ(current_locals_->size(), graph_->GetNumberOfVRegs())
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<< "No instructions throwing into a live catch block.";
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}
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} else if (current_block_->IsLoopHeader()) {
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// If the block is a loop header, we know we only have visited the pre header
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// because we are visiting in reverse post order. We create phis for all initialized
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// locals from the pre header. Their inputs will be populated at the end of
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// the analysis.
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for (size_t local = 0; local < current_locals_->size(); ++local) {
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HInstruction* incoming =
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ValueOfLocalAt(current_block_->GetLoopInformation()->GetPreHeader(), local);
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if (incoming != nullptr) {
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HPhi* phi = new (allocator_) HPhi(
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allocator_,
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local,
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0,
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incoming->GetType());
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current_block_->AddPhi(phi);
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(*current_locals_)[local] = phi;
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}
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}
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// Save the loop header so that the last phase of the analysis knows which
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// blocks need to be updated.
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loop_headers_.push_back(current_block_);
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} else if (current_block_->GetPredecessors().size() > 0) {
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// All predecessors have already been visited because we are visiting in reverse post order.
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// We merge the values of all locals, creating phis if those values differ.
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for (size_t local = 0; local < current_locals_->size(); ++local) {
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bool one_predecessor_has_no_value = false;
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bool is_different = false;
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HInstruction* value = ValueOfLocalAt(current_block_->GetPredecessors()[0], local);
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for (HBasicBlock* predecessor : current_block_->GetPredecessors()) {
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HInstruction* current = ValueOfLocalAt(predecessor, local);
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if (current == nullptr) {
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one_predecessor_has_no_value = true;
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break;
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} else if (current != value) {
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is_different = true;
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}
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}
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if (one_predecessor_has_no_value) {
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// If one predecessor has no value for this local, we trust the verifier has
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// successfully checked that there is a store dominating any read after this block.
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continue;
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}
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if (is_different) {
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HInstruction* first_input = ValueOfLocalAt(current_block_->GetPredecessors()[0], local);
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HPhi* phi = new (allocator_) HPhi(
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allocator_,
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local,
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current_block_->GetPredecessors().size(),
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first_input->GetType());
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for (size_t i = 0; i < current_block_->GetPredecessors().size(); i++) {
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HInstruction* pred_value = ValueOfLocalAt(current_block_->GetPredecessors()[i], local);
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phi->SetRawInputAt(i, pred_value);
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}
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current_block_->AddPhi(phi);
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value = phi;
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}
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(*current_locals_)[local] = value;
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}
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}
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}
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void HInstructionBuilder::PropagateLocalsToCatchBlocks() {
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const HTryBoundary& try_entry = current_block_->GetTryCatchInformation()->GetTryEntry();
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for (HBasicBlock* catch_block : try_entry.GetExceptionHandlers()) {
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ScopedArenaVector<HInstruction*>* handler_locals = GetLocalsFor(catch_block);
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DCHECK_EQ(handler_locals->size(), current_locals_->size());
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for (size_t vreg = 0, e = current_locals_->size(); vreg < e; ++vreg) {
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HInstruction* handler_value = (*handler_locals)[vreg];
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if (handler_value == nullptr) {
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// Vreg was undefined at a previously encountered throwing instruction
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// and the catch phi was deleted. Do not record the local value.
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continue;
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}
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DCHECK(handler_value->IsPhi());
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HInstruction* local_value = (*current_locals_)[vreg];
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if (local_value == nullptr) {
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// This is the first instruction throwing into `catch_block` where
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// `vreg` is undefined. Delete the catch phi.
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catch_block->RemovePhi(handler_value->AsPhi());
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(*handler_locals)[vreg] = nullptr;
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} else {
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// Vreg has been defined at all instructions throwing into `catch_block`
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// encountered so far. Record the local value in the catch phi.
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handler_value->AsPhi()->AddInput(local_value);
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}
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}
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}
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}
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void HInstructionBuilder::AppendInstruction(HInstruction* instruction) {
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current_block_->AddInstruction(instruction);
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InitializeInstruction(instruction);
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}
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void HInstructionBuilder::InsertInstructionAtTop(HInstruction* instruction) {
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if (current_block_->GetInstructions().IsEmpty()) {
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current_block_->AddInstruction(instruction);
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} else {
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current_block_->InsertInstructionBefore(instruction, current_block_->GetFirstInstruction());
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}
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InitializeInstruction(instruction);
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}
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void HInstructionBuilder::InitializeInstruction(HInstruction* instruction) {
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if (instruction->NeedsEnvironment()) {
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HEnvironment* environment = new (allocator_) HEnvironment(
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allocator_,
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current_locals_->size(),
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graph_->GetArtMethod(),
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instruction->GetDexPc(),
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instruction);
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environment->CopyFrom(ArrayRef<HInstruction* const>(*current_locals_));
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instruction->SetRawEnvironment(environment);
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}
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}
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HInstruction* HInstructionBuilder::LoadNullCheckedLocal(uint32_t register_index, uint32_t dex_pc) {
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HInstruction* ref = LoadLocal(register_index, DataType::Type::kReference);
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if (!ref->CanBeNull()) {
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return ref;
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}
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HNullCheck* null_check = new (allocator_) HNullCheck(ref, dex_pc);
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AppendInstruction(null_check);
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return null_check;
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}
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void HInstructionBuilder::SetLoopHeaderPhiInputs() {
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for (size_t i = loop_headers_.size(); i > 0; --i) {
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HBasicBlock* block = loop_headers_[i - 1];
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for (HInstructionIterator it(block->GetPhis()); !it.Done(); it.Advance()) {
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HPhi* phi = it.Current()->AsPhi();
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size_t vreg = phi->GetRegNumber();
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for (HBasicBlock* predecessor : block->GetPredecessors()) {
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HInstruction* value = ValueOfLocalAt(predecessor, vreg);
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if (value == nullptr) {
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// Vreg is undefined at this predecessor. Mark it dead and leave with
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// fewer inputs than predecessors. SsaChecker will fail if not removed.
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phi->SetDead();
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break;
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} else {
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phi->AddInput(value);
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}
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}
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}
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}
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}
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static bool IsBlockPopulated(HBasicBlock* block) {
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if (block->IsLoopHeader()) {
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// Suspend checks were inserted into loop headers during building of dominator tree.
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DCHECK(block->GetFirstInstruction()->IsSuspendCheck());
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return block->GetFirstInstruction() != block->GetLastInstruction();
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} else {
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return !block->GetInstructions().IsEmpty();
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}
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}
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bool HInstructionBuilder::Build() {
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DCHECK(code_item_accessor_.HasCodeItem());
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locals_for_.resize(
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graph_->GetBlocks().size(),
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ScopedArenaVector<HInstruction*>(local_allocator_->Adapter(kArenaAllocGraphBuilder)));
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// Find locations where we want to generate extra stackmaps for native debugging.
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// This allows us to generate the info only at interesting points (for example,
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// at start of java statement) rather than before every dex instruction.
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const bool native_debuggable = code_generator_ != nullptr &&
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code_generator_->GetCompilerOptions().GetNativeDebuggable();
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ArenaBitVector* native_debug_info_locations = nullptr;
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if (native_debuggable) {
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native_debug_info_locations = FindNativeDebugInfoLocations();
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}
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for (HBasicBlock* block : graph_->GetReversePostOrder()) {
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current_block_ = block;
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uint32_t block_dex_pc = current_block_->GetDexPc();
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InitializeBlockLocals();
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if (current_block_->IsEntryBlock()) {
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InitializeParameters();
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AppendInstruction(new (allocator_) HSuspendCheck(0u));
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AppendInstruction(new (allocator_) HGoto(0u));
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continue;
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} else if (current_block_->IsExitBlock()) {
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AppendInstruction(new (allocator_) HExit());
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continue;
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} else if (current_block_->IsLoopHeader()) {
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HSuspendCheck* suspend_check = new (allocator_) HSuspendCheck(current_block_->GetDexPc());
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current_block_->GetLoopInformation()->SetSuspendCheck(suspend_check);
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// This is slightly odd because the loop header might not be empty (TryBoundary).
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// But we're still creating the environment with locals from the top of the block.
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InsertInstructionAtTop(suspend_check);
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}
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if (block_dex_pc == kNoDexPc || current_block_ != block_builder_->GetBlockAt(block_dex_pc)) {
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// Synthetic block that does not need to be populated.
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DCHECK(IsBlockPopulated(current_block_));
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continue;
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}
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DCHECK(!IsBlockPopulated(current_block_));
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uint32_t quicken_index = 0;
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if (CanDecodeQuickenedInfo()) {
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quicken_index = block_builder_->GetQuickenIndex(block_dex_pc);
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}
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for (const DexInstructionPcPair& pair : code_item_accessor_.InstructionsFrom(block_dex_pc)) {
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if (current_block_ == nullptr) {
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// The previous instruction ended this block.
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break;
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}
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const uint32_t dex_pc = pair.DexPc();
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if (dex_pc != block_dex_pc && FindBlockStartingAt(dex_pc) != nullptr) {
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// This dex_pc starts a new basic block.
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break;
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}
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if (current_block_->IsTryBlock() && IsThrowingDexInstruction(pair.Inst())) {
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PropagateLocalsToCatchBlocks();
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}
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if (native_debuggable && native_debug_info_locations->IsBitSet(dex_pc)) {
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AppendInstruction(new (allocator_) HNativeDebugInfo(dex_pc));
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}
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if (!ProcessDexInstruction(pair.Inst(), dex_pc, quicken_index)) {
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return false;
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}
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if (QuickenInfoTable::NeedsIndexForInstruction(&pair.Inst())) {
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++quicken_index;
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}
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}
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if (current_block_ != nullptr) {
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// Branching instructions clear current_block, so we know the last
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// instruction of the current block is not a branching instruction.
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// We add an unconditional Goto to the next block.
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DCHECK_EQ(current_block_->GetSuccessors().size(), 1u);
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AppendInstruction(new (allocator_) HGoto());
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}
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}
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SetLoopHeaderPhiInputs();
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return true;
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}
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void HInstructionBuilder::BuildIntrinsic(ArtMethod* method) {
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DCHECK(!code_item_accessor_.HasCodeItem());
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DCHECK(method->IsIntrinsic());
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locals_for_.resize(
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graph_->GetBlocks().size(),
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ScopedArenaVector<HInstruction*>(local_allocator_->Adapter(kArenaAllocGraphBuilder)));
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// Fill the entry block. Do not add suspend check, we do not want a suspend
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// check in intrinsics; intrinsic methods are supposed to be fast.
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current_block_ = graph_->GetEntryBlock();
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InitializeBlockLocals();
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InitializeParameters();
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AppendInstruction(new (allocator_) HGoto(0u));
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// Fill the body.
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current_block_ = current_block_->GetSingleSuccessor();
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InitializeBlockLocals();
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DCHECK(!IsBlockPopulated(current_block_));
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// Add the invoke and return instruction. Use HInvokeStaticOrDirect even
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// for methods that would normally use an HInvokeVirtual (sharpen the call).
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size_t in_vregs = graph_->GetNumberOfInVRegs();
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size_t number_of_arguments =
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in_vregs - std::count(current_locals_->end() - in_vregs, current_locals_->end(), nullptr);
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uint32_t method_idx = dex_compilation_unit_->GetDexMethodIndex();
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MethodReference target_method(dex_file_, method_idx);
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HInvokeStaticOrDirect::DispatchInfo dispatch_info = {
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HInvokeStaticOrDirect::MethodLoadKind::kRuntimeCall,
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HInvokeStaticOrDirect::CodePtrLocation::kCallArtMethod,
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/* method_load_data= */ 0u
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};
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InvokeType invoke_type = dex_compilation_unit_->IsStatic() ? kStatic : kDirect;
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HInvokeStaticOrDirect* invoke = new (allocator_) HInvokeStaticOrDirect(
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allocator_,
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number_of_arguments,
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return_type_,
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kNoDexPc,
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method_idx,
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method,
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dispatch_info,
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invoke_type,
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target_method,
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HInvokeStaticOrDirect::ClinitCheckRequirement::kNone);
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RangeInstructionOperands operands(graph_->GetNumberOfVRegs() - in_vregs, in_vregs);
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HandleInvoke(invoke, operands, dex_file_->GetMethodShorty(method_idx), /* is_unresolved= */ false);
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// Add the return instruction.
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if (return_type_ == DataType::Type::kVoid) {
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AppendInstruction(new (allocator_) HReturnVoid());
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} else {
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AppendInstruction(new (allocator_) HReturn(invoke));
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}
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// Fill the exit block.
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DCHECK_EQ(current_block_->GetSingleSuccessor(), graph_->GetExitBlock());
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current_block_ = graph_->GetExitBlock();
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InitializeBlockLocals();
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AppendInstruction(new (allocator_) HExit());
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}
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ArenaBitVector* HInstructionBuilder::FindNativeDebugInfoLocations() {
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ArenaBitVector* locations = ArenaBitVector::Create(local_allocator_,
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code_item_accessor_.InsnsSizeInCodeUnits(),
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/* expandable= */ false,
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kArenaAllocGraphBuilder);
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locations->ClearAllBits();
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// The visitor gets called when the line number changes.
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// In other words, it marks the start of new java statement.
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code_item_accessor_.DecodeDebugPositionInfo([&](const DexFile::PositionInfo& entry) {
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locations->SetBit(entry.address_);
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return false;
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});
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// Instruction-specific tweaks.
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for (const DexInstructionPcPair& inst : code_item_accessor_) {
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switch (inst->Opcode()) {
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case Instruction::MOVE_EXCEPTION: {
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// Stop in native debugger after the exception has been moved.
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// The compiler also expects the move at the start of basic block so
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// we do not want to interfere by inserting native-debug-info before it.
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locations->ClearBit(inst.DexPc());
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DexInstructionIterator next = std::next(DexInstructionIterator(inst));
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DCHECK(next.DexPc() != inst.DexPc());
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if (next != code_item_accessor_.end()) {
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locations->SetBit(next.DexPc());
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}
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break;
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}
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default:
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break;
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}
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}
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return locations;
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}
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HInstruction* HInstructionBuilder::LoadLocal(uint32_t reg_number, DataType::Type type) const {
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HInstruction* value = (*current_locals_)[reg_number];
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DCHECK(value != nullptr);
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// If the operation requests a specific type, we make sure its input is of that type.
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if (type != value->GetType()) {
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if (DataType::IsFloatingPointType(type)) {
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value = ssa_builder_->GetFloatOrDoubleEquivalent(value, type);
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} else if (type == DataType::Type::kReference) {
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value = ssa_builder_->GetReferenceTypeEquivalent(value);
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}
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DCHECK(value != nullptr);
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}
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return value;
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}
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void HInstructionBuilder::UpdateLocal(uint32_t reg_number, HInstruction* stored_value) {
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DataType::Type stored_type = stored_value->GetType();
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DCHECK_NE(stored_type, DataType::Type::kVoid);
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// Storing into vreg `reg_number` may implicitly invalidate the surrounding
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// registers. Consider the following cases:
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// (1) Storing a wide value must overwrite previous values in both `reg_number`
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// and `reg_number+1`. We store `nullptr` in `reg_number+1`.
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// (2) If vreg `reg_number-1` holds a wide value, writing into `reg_number`
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// must invalidate it. We store `nullptr` in `reg_number-1`.
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// Consequently, storing a wide value into the high vreg of another wide value
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// will invalidate both `reg_number-1` and `reg_number+1`.
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if (reg_number != 0) {
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HInstruction* local_low = (*current_locals_)[reg_number - 1];
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if (local_low != nullptr && DataType::Is64BitType(local_low->GetType())) {
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// The vreg we are storing into was previously the high vreg of a pair.
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// We need to invalidate its low vreg.
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DCHECK((*current_locals_)[reg_number] == nullptr);
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(*current_locals_)[reg_number - 1] = nullptr;
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}
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}
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(*current_locals_)[reg_number] = stored_value;
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if (DataType::Is64BitType(stored_type)) {
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// We are storing a pair. Invalidate the instruction in the high vreg.
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(*current_locals_)[reg_number + 1] = nullptr;
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}
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}
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void HInstructionBuilder::InitializeParameters() {
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DCHECK(current_block_->IsEntryBlock());
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// outer_compilation_unit_ is null only when unit testing.
|
if (outer_compilation_unit_ == nullptr) {
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return;
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}
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const char* shorty = dex_compilation_unit_->GetShorty();
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uint16_t number_of_parameters = graph_->GetNumberOfInVRegs();
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uint16_t locals_index = graph_->GetNumberOfLocalVRegs();
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uint16_t parameter_index = 0;
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|
const dex::MethodId& referrer_method_id =
|
dex_file_->GetMethodId(dex_compilation_unit_->GetDexMethodIndex());
|
if (!dex_compilation_unit_->IsStatic()) {
|
// Add the implicit 'this' argument, not expressed in the signature.
|
HParameterValue* parameter = new (allocator_) HParameterValue(*dex_file_,
|
referrer_method_id.class_idx_,
|
parameter_index++,
|
DataType::Type::kReference,
|
/* is_this= */ true);
|
AppendInstruction(parameter);
|
UpdateLocal(locals_index++, parameter);
|
number_of_parameters--;
|
current_this_parameter_ = parameter;
|
} else {
|
DCHECK(current_this_parameter_ == nullptr);
|
}
|
|
const dex::ProtoId& proto = dex_file_->GetMethodPrototype(referrer_method_id);
|
const dex::TypeList* arg_types = dex_file_->GetProtoParameters(proto);
|
for (int i = 0, shorty_pos = 1; i < number_of_parameters; i++) {
|
HParameterValue* parameter = new (allocator_) HParameterValue(
|
*dex_file_,
|
arg_types->GetTypeItem(shorty_pos - 1).type_idx_,
|
parameter_index++,
|
DataType::FromShorty(shorty[shorty_pos]),
|
/* is_this= */ false);
|
++shorty_pos;
|
AppendInstruction(parameter);
|
// Store the parameter value in the local that the dex code will use
|
// to reference that parameter.
|
UpdateLocal(locals_index++, parameter);
|
if (DataType::Is64BitType(parameter->GetType())) {
|
i++;
|
locals_index++;
|
parameter_index++;
|
}
|
}
|
}
|
|
template<typename T>
|
void HInstructionBuilder::If_22t(const Instruction& instruction, uint32_t dex_pc) {
|
HInstruction* first = LoadLocal(instruction.VRegA(), DataType::Type::kInt32);
|
HInstruction* second = LoadLocal(instruction.VRegB(), DataType::Type::kInt32);
|
T* comparison = new (allocator_) T(first, second, dex_pc);
|
AppendInstruction(comparison);
|
AppendInstruction(new (allocator_) HIf(comparison, dex_pc));
|
current_block_ = nullptr;
|
}
|
|
template<typename T>
|
void HInstructionBuilder::If_21t(const Instruction& instruction, uint32_t dex_pc) {
|
HInstruction* value = LoadLocal(instruction.VRegA(), DataType::Type::kInt32);
|
T* comparison = new (allocator_) T(value, graph_->GetIntConstant(0, dex_pc), dex_pc);
|
AppendInstruction(comparison);
|
AppendInstruction(new (allocator_) HIf(comparison, dex_pc));
|
current_block_ = nullptr;
|
}
|
|
template<typename T>
|
void HInstructionBuilder::Unop_12x(const Instruction& instruction,
|
DataType::Type type,
|
uint32_t dex_pc) {
|
HInstruction* first = LoadLocal(instruction.VRegB(), type);
|
AppendInstruction(new (allocator_) T(type, first, dex_pc));
|
UpdateLocal(instruction.VRegA(), current_block_->GetLastInstruction());
|
}
|
|
void HInstructionBuilder::Conversion_12x(const Instruction& instruction,
|
DataType::Type input_type,
|
DataType::Type result_type,
|
uint32_t dex_pc) {
|
HInstruction* first = LoadLocal(instruction.VRegB(), input_type);
|
AppendInstruction(new (allocator_) HTypeConversion(result_type, first, dex_pc));
|
UpdateLocal(instruction.VRegA(), current_block_->GetLastInstruction());
|
}
|
|
template<typename T>
|
void HInstructionBuilder::Binop_23x(const Instruction& instruction,
|
DataType::Type type,
|
uint32_t dex_pc) {
|
HInstruction* first = LoadLocal(instruction.VRegB(), type);
|
HInstruction* second = LoadLocal(instruction.VRegC(), type);
|
AppendInstruction(new (allocator_) T(type, first, second, dex_pc));
|
UpdateLocal(instruction.VRegA(), current_block_->GetLastInstruction());
|
}
|
|
template<typename T>
|
void HInstructionBuilder::Binop_23x_shift(const Instruction& instruction,
|
DataType::Type type,
|
uint32_t dex_pc) {
|
HInstruction* first = LoadLocal(instruction.VRegB(), type);
|
HInstruction* second = LoadLocal(instruction.VRegC(), DataType::Type::kInt32);
|
AppendInstruction(new (allocator_) T(type, first, second, dex_pc));
|
UpdateLocal(instruction.VRegA(), current_block_->GetLastInstruction());
|
}
|
|
void HInstructionBuilder::Binop_23x_cmp(const Instruction& instruction,
|
DataType::Type type,
|
ComparisonBias bias,
|
uint32_t dex_pc) {
|
HInstruction* first = LoadLocal(instruction.VRegB(), type);
|
HInstruction* second = LoadLocal(instruction.VRegC(), type);
|
AppendInstruction(new (allocator_) HCompare(type, first, second, bias, dex_pc));
|
UpdateLocal(instruction.VRegA(), current_block_->GetLastInstruction());
|
}
|
|
template<typename T>
|
void HInstructionBuilder::Binop_12x_shift(const Instruction& instruction,
|
DataType::Type type,
|
uint32_t dex_pc) {
|
HInstruction* first = LoadLocal(instruction.VRegA(), type);
|
HInstruction* second = LoadLocal(instruction.VRegB(), DataType::Type::kInt32);
|
AppendInstruction(new (allocator_) T(type, first, second, dex_pc));
|
UpdateLocal(instruction.VRegA(), current_block_->GetLastInstruction());
|
}
|
|
template<typename T>
|
void HInstructionBuilder::Binop_12x(const Instruction& instruction,
|
DataType::Type type,
|
uint32_t dex_pc) {
|
HInstruction* first = LoadLocal(instruction.VRegA(), type);
|
HInstruction* second = LoadLocal(instruction.VRegB(), type);
|
AppendInstruction(new (allocator_) T(type, first, second, dex_pc));
|
UpdateLocal(instruction.VRegA(), current_block_->GetLastInstruction());
|
}
|
|
template<typename T>
|
void HInstructionBuilder::Binop_22s(const Instruction& instruction, bool reverse, uint32_t dex_pc) {
|
HInstruction* first = LoadLocal(instruction.VRegB(), DataType::Type::kInt32);
|
HInstruction* second = graph_->GetIntConstant(instruction.VRegC_22s(), dex_pc);
|
if (reverse) {
|
std::swap(first, second);
|
}
|
AppendInstruction(new (allocator_) T(DataType::Type::kInt32, first, second, dex_pc));
|
UpdateLocal(instruction.VRegA(), current_block_->GetLastInstruction());
|
}
|
|
template<typename T>
|
void HInstructionBuilder::Binop_22b(const Instruction& instruction, bool reverse, uint32_t dex_pc) {
|
HInstruction* first = LoadLocal(instruction.VRegB(), DataType::Type::kInt32);
|
HInstruction* second = graph_->GetIntConstant(instruction.VRegC_22b(), dex_pc);
|
if (reverse) {
|
std::swap(first, second);
|
}
|
AppendInstruction(new (allocator_) T(DataType::Type::kInt32, first, second, dex_pc));
|
UpdateLocal(instruction.VRegA(), current_block_->GetLastInstruction());
|
}
|
|
// Does the method being compiled need any constructor barriers being inserted?
|
// (Always 'false' for methods that aren't <init>.)
|
static bool RequiresConstructorBarrier(const DexCompilationUnit* cu) {
|
// Can be null in unit tests only.
|
if (UNLIKELY(cu == nullptr)) {
|
return false;
|
}
|
|
// Constructor barriers are applicable only for <init> methods.
|
if (LIKELY(!cu->IsConstructor() || cu->IsStatic())) {
|
return false;
|
}
|
|
return cu->RequiresConstructorBarrier();
|
}
|
|
// Returns true if `block` has only one successor which starts at the next
|
// dex_pc after `instruction` at `dex_pc`.
|
static bool IsFallthroughInstruction(const Instruction& instruction,
|
uint32_t dex_pc,
|
HBasicBlock* block) {
|
uint32_t next_dex_pc = dex_pc + instruction.SizeInCodeUnits();
|
return block->GetSingleSuccessor()->GetDexPc() == next_dex_pc;
|
}
|
|
void HInstructionBuilder::BuildSwitch(const Instruction& instruction, uint32_t dex_pc) {
|
HInstruction* value = LoadLocal(instruction.VRegA(), DataType::Type::kInt32);
|
DexSwitchTable table(instruction, dex_pc);
|
|
if (table.GetNumEntries() == 0) {
|
// Empty Switch. Code falls through to the next block.
|
DCHECK(IsFallthroughInstruction(instruction, dex_pc, current_block_));
|
AppendInstruction(new (allocator_) HGoto(dex_pc));
|
} else if (table.ShouldBuildDecisionTree()) {
|
for (DexSwitchTableIterator it(table); !it.Done(); it.Advance()) {
|
HInstruction* case_value = graph_->GetIntConstant(it.CurrentKey(), dex_pc);
|
HEqual* comparison = new (allocator_) HEqual(value, case_value, dex_pc);
|
AppendInstruction(comparison);
|
AppendInstruction(new (allocator_) HIf(comparison, dex_pc));
|
|
if (!it.IsLast()) {
|
current_block_ = FindBlockStartingAt(it.GetDexPcForCurrentIndex());
|
}
|
}
|
} else {
|
AppendInstruction(
|
new (allocator_) HPackedSwitch(table.GetEntryAt(0), table.GetNumEntries(), value, dex_pc));
|
}
|
|
current_block_ = nullptr;
|
}
|
|
void HInstructionBuilder::BuildReturn(const Instruction& instruction,
|
DataType::Type type,
|
uint32_t dex_pc) {
|
if (type == DataType::Type::kVoid) {
|
// Only <init> (which is a return-void) could possibly have a constructor fence.
|
// This may insert additional redundant constructor fences from the super constructors.
|
// TODO: remove redundant constructor fences (b/36656456).
|
if (RequiresConstructorBarrier(dex_compilation_unit_)) {
|
// Compiling instance constructor.
|
DCHECK_STREQ("<init>", graph_->GetMethodName());
|
|
HInstruction* fence_target = current_this_parameter_;
|
DCHECK(fence_target != nullptr);
|
|
AppendInstruction(new (allocator_) HConstructorFence(fence_target, dex_pc, allocator_));
|
MaybeRecordStat(
|
compilation_stats_,
|
MethodCompilationStat::kConstructorFenceGeneratedFinal);
|
}
|
AppendInstruction(new (allocator_) HReturnVoid(dex_pc));
|
} else {
|
DCHECK(!RequiresConstructorBarrier(dex_compilation_unit_));
|
HInstruction* value = LoadLocal(instruction.VRegA(), type);
|
AppendInstruction(new (allocator_) HReturn(value, dex_pc));
|
}
|
current_block_ = nullptr;
|
}
|
|
static InvokeType GetInvokeTypeFromOpCode(Instruction::Code opcode) {
|
switch (opcode) {
|
case Instruction::INVOKE_STATIC:
|
case Instruction::INVOKE_STATIC_RANGE:
|
return kStatic;
|
case Instruction::INVOKE_DIRECT:
|
case Instruction::INVOKE_DIRECT_RANGE:
|
return kDirect;
|
case Instruction::INVOKE_VIRTUAL:
|
case Instruction::INVOKE_VIRTUAL_QUICK:
|
case Instruction::INVOKE_VIRTUAL_RANGE:
|
case Instruction::INVOKE_VIRTUAL_RANGE_QUICK:
|
return kVirtual;
|
case Instruction::INVOKE_INTERFACE:
|
case Instruction::INVOKE_INTERFACE_RANGE:
|
return kInterface;
|
case Instruction::INVOKE_SUPER_RANGE:
|
case Instruction::INVOKE_SUPER:
|
return kSuper;
|
default:
|
LOG(FATAL) << "Unexpected invoke opcode: " << opcode;
|
UNREACHABLE();
|
}
|
}
|
|
ArtMethod* HInstructionBuilder::ResolveMethod(uint16_t method_idx, InvokeType invoke_type) {
|
ScopedObjectAccess soa(Thread::Current());
|
|
ClassLinker* class_linker = dex_compilation_unit_->GetClassLinker();
|
Handle<mirror::ClassLoader> class_loader = dex_compilation_unit_->GetClassLoader();
|
|
ArtMethod* resolved_method =
|
class_linker->ResolveMethod<ClassLinker::ResolveMode::kCheckICCEAndIAE>(
|
method_idx,
|
dex_compilation_unit_->GetDexCache(),
|
class_loader,
|
graph_->GetArtMethod(),
|
invoke_type);
|
|
if (UNLIKELY(resolved_method == nullptr)) {
|
// Clean up any exception left by type resolution.
|
soa.Self()->ClearException();
|
return nullptr;
|
}
|
|
// The referrer may be unresolved for AOT if we're compiling a class that cannot be
|
// resolved because, for example, we don't find a superclass in the classpath.
|
if (graph_->GetArtMethod() == nullptr) {
|
// The class linker cannot check access without a referrer, so we have to do it.
|
// Fall back to HInvokeUnresolved if the method isn't public.
|
if (!resolved_method->IsPublic()) {
|
return nullptr;
|
}
|
}
|
|
// We have to special case the invoke-super case, as ClassLinker::ResolveMethod does not.
|
// We need to look at the referrer's super class vtable. We need to do this to know if we need to
|
// make this an invoke-unresolved to handle cross-dex invokes or abstract super methods, both of
|
// which require runtime handling.
|
if (invoke_type == kSuper) {
|
ObjPtr<mirror::Class> compiling_class = dex_compilation_unit_->GetCompilingClass().Get();
|
if (compiling_class == nullptr) {
|
// We could not determine the method's class we need to wait until runtime.
|
DCHECK(Runtime::Current()->IsAotCompiler());
|
return nullptr;
|
}
|
ObjPtr<mirror::Class> referenced_class = class_linker->LookupResolvedType(
|
dex_compilation_unit_->GetDexFile()->GetMethodId(method_idx).class_idx_,
|
dex_compilation_unit_->GetDexCache().Get(),
|
class_loader.Get());
|
DCHECK(referenced_class != nullptr); // We have already resolved a method from this class.
|
if (!referenced_class->IsAssignableFrom(compiling_class)) {
|
// We cannot statically determine the target method. The runtime will throw a
|
// NoSuchMethodError on this one.
|
return nullptr;
|
}
|
ArtMethod* actual_method;
|
if (referenced_class->IsInterface()) {
|
actual_method = referenced_class->FindVirtualMethodForInterfaceSuper(
|
resolved_method, class_linker->GetImagePointerSize());
|
} else {
|
uint16_t vtable_index = resolved_method->GetMethodIndex();
|
actual_method = compiling_class->GetSuperClass()->GetVTableEntry(
|
vtable_index, class_linker->GetImagePointerSize());
|
}
|
if (actual_method != resolved_method &&
|
!IsSameDexFile(*actual_method->GetDexFile(), *dex_compilation_unit_->GetDexFile())) {
|
// The back-end code generator relies on this check in order to ensure that it will not
|
// attempt to read the dex_cache with a dex_method_index that is not from the correct
|
// dex_file. If we didn't do this check then the dex_method_index will not be updated in the
|
// builder, which means that the code-generator (and sharpening and inliner, maybe)
|
// might invoke an incorrect method.
|
// TODO: The actual method could still be referenced in the current dex file, so we
|
// could try locating it.
|
// TODO: Remove the dex_file restriction.
|
return nullptr;
|
}
|
if (!actual_method->IsInvokable()) {
|
// Fail if the actual method cannot be invoked. Otherwise, the runtime resolution stub
|
// could resolve the callee to the wrong method.
|
return nullptr;
|
}
|
resolved_method = actual_method;
|
}
|
|
return resolved_method;
|
}
|
|
static bool IsStringConstructor(ArtMethod* method) {
|
ScopedObjectAccess soa(Thread::Current());
|
return method->GetDeclaringClass()->IsStringClass() && method->IsConstructor();
|
}
|
|
bool HInstructionBuilder::BuildInvoke(const Instruction& instruction,
|
uint32_t dex_pc,
|
uint32_t method_idx,
|
const InstructionOperands& operands) {
|
InvokeType invoke_type = GetInvokeTypeFromOpCode(instruction.Opcode());
|
const char* shorty = dex_file_->GetMethodShorty(method_idx);
|
DataType::Type return_type = DataType::FromShorty(shorty[0]);
|
|
// Remove the return type from the 'proto'.
|
size_t number_of_arguments = strlen(shorty) - 1;
|
if (invoke_type != kStatic) { // instance call
|
// One extra argument for 'this'.
|
number_of_arguments++;
|
}
|
|
ArtMethod* resolved_method = ResolveMethod(method_idx, invoke_type);
|
|
if (UNLIKELY(resolved_method == nullptr)) {
|
MaybeRecordStat(compilation_stats_,
|
MethodCompilationStat::kUnresolvedMethod);
|
HInvoke* invoke = new (allocator_) HInvokeUnresolved(allocator_,
|
number_of_arguments,
|
return_type,
|
dex_pc,
|
method_idx,
|
invoke_type);
|
return HandleInvoke(invoke, operands, shorty, /* is_unresolved= */ true);
|
}
|
|
// Replace calls to String.<init> with StringFactory.
|
if (IsStringConstructor(resolved_method)) {
|
uint32_t string_init_entry_point = WellKnownClasses::StringInitToEntryPoint(resolved_method);
|
HInvokeStaticOrDirect::DispatchInfo dispatch_info = {
|
HInvokeStaticOrDirect::MethodLoadKind::kStringInit,
|
HInvokeStaticOrDirect::CodePtrLocation::kCallArtMethod,
|
dchecked_integral_cast<uint64_t>(string_init_entry_point)
|
};
|
ScopedObjectAccess soa(Thread::Current());
|
MethodReference target_method(resolved_method->GetDexFile(),
|
resolved_method->GetDexMethodIndex());
|
// We pass null for the resolved_method to ensure optimizations
|
// don't rely on it.
|
HInvoke* invoke = new (allocator_) HInvokeStaticOrDirect(
|
allocator_,
|
number_of_arguments - 1,
|
/* return_type= */ DataType::Type::kReference,
|
dex_pc,
|
method_idx,
|
/* resolved_method= */ nullptr,
|
dispatch_info,
|
invoke_type,
|
target_method,
|
HInvokeStaticOrDirect::ClinitCheckRequirement::kImplicit);
|
return HandleStringInit(invoke, operands, shorty);
|
}
|
|
// Potential class initialization check, in the case of a static method call.
|
HClinitCheck* clinit_check = nullptr;
|
HInvoke* invoke = nullptr;
|
if (invoke_type == kDirect || invoke_type == kStatic || invoke_type == kSuper) {
|
// By default, consider that the called method implicitly requires
|
// an initialization check of its declaring method.
|
HInvokeStaticOrDirect::ClinitCheckRequirement clinit_check_requirement
|
= HInvokeStaticOrDirect::ClinitCheckRequirement::kImplicit;
|
ScopedObjectAccess soa(Thread::Current());
|
if (invoke_type == kStatic) {
|
clinit_check =
|
ProcessClinitCheckForInvoke(dex_pc, resolved_method, &clinit_check_requirement);
|
} else if (invoke_type == kSuper) {
|
if (IsSameDexFile(*resolved_method->GetDexFile(), *dex_compilation_unit_->GetDexFile())) {
|
// Update the method index to the one resolved. Note that this may be a no-op if
|
// we resolved to the method referenced by the instruction.
|
method_idx = resolved_method->GetDexMethodIndex();
|
}
|
}
|
|
HInvokeStaticOrDirect::DispatchInfo dispatch_info =
|
HSharpening::SharpenInvokeStaticOrDirect(resolved_method, code_generator_);
|
MethodReference target_method(resolved_method->GetDexFile(),
|
resolved_method->GetDexMethodIndex());
|
invoke = new (allocator_) HInvokeStaticOrDirect(allocator_,
|
number_of_arguments,
|
return_type,
|
dex_pc,
|
method_idx,
|
resolved_method,
|
dispatch_info,
|
invoke_type,
|
target_method,
|
clinit_check_requirement);
|
} else if (invoke_type == kVirtual) {
|
ScopedObjectAccess soa(Thread::Current()); // Needed for the method index
|
invoke = new (allocator_) HInvokeVirtual(allocator_,
|
number_of_arguments,
|
return_type,
|
dex_pc,
|
method_idx,
|
resolved_method,
|
resolved_method->GetMethodIndex());
|
} else {
|
DCHECK_EQ(invoke_type, kInterface);
|
ScopedObjectAccess soa(Thread::Current()); // Needed for the IMT index.
|
invoke = new (allocator_) HInvokeInterface(allocator_,
|
number_of_arguments,
|
return_type,
|
dex_pc,
|
method_idx,
|
resolved_method,
|
ImTable::GetImtIndex(resolved_method));
|
}
|
return HandleInvoke(invoke, operands, shorty, /* is_unresolved= */ false, clinit_check);
|
}
|
|
bool HInstructionBuilder::BuildInvokePolymorphic(uint32_t dex_pc,
|
uint32_t method_idx,
|
dex::ProtoIndex proto_idx,
|
const InstructionOperands& operands) {
|
const char* shorty = dex_file_->GetShorty(proto_idx);
|
DCHECK_EQ(1 + ArtMethod::NumArgRegisters(shorty), operands.GetNumberOfOperands());
|
DataType::Type return_type = DataType::FromShorty(shorty[0]);
|
size_t number_of_arguments = strlen(shorty);
|
HInvoke* invoke = new (allocator_) HInvokePolymorphic(allocator_,
|
number_of_arguments,
|
return_type,
|
dex_pc,
|
method_idx);
|
return HandleInvoke(invoke, operands, shorty, /* is_unresolved= */ false);
|
}
|
|
|
bool HInstructionBuilder::BuildInvokeCustom(uint32_t dex_pc,
|
uint32_t call_site_idx,
|
const InstructionOperands& operands) {
|
dex::ProtoIndex proto_idx = dex_file_->GetProtoIndexForCallSite(call_site_idx);
|
const char* shorty = dex_file_->GetShorty(proto_idx);
|
DataType::Type return_type = DataType::FromShorty(shorty[0]);
|
size_t number_of_arguments = strlen(shorty) - 1;
|
HInvoke* invoke = new (allocator_) HInvokeCustom(allocator_,
|
number_of_arguments,
|
call_site_idx,
|
return_type,
|
dex_pc);
|
return HandleInvoke(invoke, operands, shorty, /* is_unresolved= */ false);
|
}
|
|
HNewInstance* HInstructionBuilder::BuildNewInstance(dex::TypeIndex type_index, uint32_t dex_pc) {
|
ScopedObjectAccess soa(Thread::Current());
|
|
HLoadClass* load_class = BuildLoadClass(type_index, dex_pc);
|
|
HInstruction* cls = load_class;
|
Handle<mirror::Class> klass = load_class->GetClass();
|
|
if (!IsInitialized(klass)) {
|
cls = new (allocator_) HClinitCheck(load_class, dex_pc);
|
AppendInstruction(cls);
|
}
|
|
// Only the access check entrypoint handles the finalizable class case. If we
|
// need access checks, then we haven't resolved the method and the class may
|
// again be finalizable.
|
QuickEntrypointEnum entrypoint = kQuickAllocObjectInitialized;
|
if (load_class->NeedsAccessCheck() || klass->IsFinalizable() || !klass->IsInstantiable()) {
|
entrypoint = kQuickAllocObjectWithChecks;
|
}
|
// We will always be able to resolve the string class since it is in the BCP.
|
if (!klass.IsNull() && klass->IsStringClass()) {
|
entrypoint = kQuickAllocStringObject;
|
}
|
|
// Consider classes we haven't resolved as potentially finalizable.
|
bool finalizable = (klass == nullptr) || klass->IsFinalizable();
|
|
HNewInstance* new_instance = new (allocator_) HNewInstance(
|
cls,
|
dex_pc,
|
type_index,
|
*dex_compilation_unit_->GetDexFile(),
|
finalizable,
|
entrypoint);
|
AppendInstruction(new_instance);
|
|
return new_instance;
|
}
|
|
void HInstructionBuilder::BuildConstructorFenceForAllocation(HInstruction* allocation) {
|
DCHECK(allocation != nullptr &&
|
(allocation->IsNewInstance() ||
|
allocation->IsNewArray())); // corresponding to "new" keyword in JLS.
|
|
if (allocation->IsNewInstance()) {
|
// STRING SPECIAL HANDLING:
|
// -------------------------------
|
// Strings have a real HNewInstance node but they end up always having 0 uses.
|
// All uses of a String HNewInstance are always transformed to replace their input
|
// of the HNewInstance with an input of the invoke to StringFactory.
|
//
|
// Do not emit an HConstructorFence here since it can inhibit some String new-instance
|
// optimizations (to pass checker tests that rely on those optimizations).
|
HNewInstance* new_inst = allocation->AsNewInstance();
|
HLoadClass* load_class = new_inst->GetLoadClass();
|
|
Thread* self = Thread::Current();
|
ScopedObjectAccess soa(self);
|
StackHandleScope<1> hs(self);
|
Handle<mirror::Class> klass = load_class->GetClass();
|
if (klass != nullptr && klass->IsStringClass()) {
|
return;
|
// Note: Do not use allocation->IsStringAlloc which requires
|
// a valid ReferenceTypeInfo, but that doesn't get made until after reference type
|
// propagation (and instruction builder is too early).
|
}
|
// (In terms of correctness, the StringFactory needs to provide its own
|
// default initialization barrier, see below.)
|
}
|
|
// JLS 17.4.5 "Happens-before Order" describes:
|
//
|
// The default initialization of any object happens-before any other actions (other than
|
// default-writes) of a program.
|
//
|
// In our implementation the default initialization of an object to type T means
|
// setting all of its initial data (object[0..size)) to 0, and setting the
|
// object's class header (i.e. object.getClass() == T.class).
|
//
|
// In practice this fence ensures that the writes to the object header
|
// are visible to other threads if this object escapes the current thread.
|
// (and in theory the 0-initializing, but that happens automatically
|
// when new memory pages are mapped in by the OS).
|
HConstructorFence* ctor_fence =
|
new (allocator_) HConstructorFence(allocation, allocation->GetDexPc(), allocator_);
|
AppendInstruction(ctor_fence);
|
MaybeRecordStat(
|
compilation_stats_,
|
MethodCompilationStat::kConstructorFenceGeneratedNew);
|
}
|
|
static bool IsInBootImage(ObjPtr<mirror::Class> cls, const CompilerOptions& compiler_options)
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
if (compiler_options.IsBootImage()) {
|
std::string temp;
|
const char* descriptor = cls->GetDescriptor(&temp);
|
return compiler_options.IsImageClass(descriptor);
|
} else {
|
return Runtime::Current()->GetHeap()->FindSpaceFromObject(cls, false)->IsImageSpace();
|
}
|
}
|
|
static bool IsSubClass(ObjPtr<mirror::Class> to_test, ObjPtr<mirror::Class> super_class)
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
return to_test != nullptr && !to_test->IsInterface() && to_test->IsSubClass(super_class);
|
}
|
|
static bool HasTrivialClinit(ObjPtr<mirror::Class> klass, PointerSize pointer_size)
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
// Check if the class has encoded fields that trigger bytecode execution.
|
// (Encoded fields are just a different representation of <clinit>.)
|
if (klass->NumStaticFields() != 0u) {
|
DCHECK(klass->GetClassDef() != nullptr);
|
EncodedStaticFieldValueIterator it(klass->GetDexFile(), *klass->GetClassDef());
|
for (; it.HasNext(); it.Next()) {
|
switch (it.GetValueType()) {
|
case EncodedArrayValueIterator::ValueType::kBoolean:
|
case EncodedArrayValueIterator::ValueType::kByte:
|
case EncodedArrayValueIterator::ValueType::kShort:
|
case EncodedArrayValueIterator::ValueType::kChar:
|
case EncodedArrayValueIterator::ValueType::kInt:
|
case EncodedArrayValueIterator::ValueType::kLong:
|
case EncodedArrayValueIterator::ValueType::kFloat:
|
case EncodedArrayValueIterator::ValueType::kDouble:
|
case EncodedArrayValueIterator::ValueType::kNull:
|
case EncodedArrayValueIterator::ValueType::kString:
|
// Primitive, null or j.l.String initialization is permitted.
|
break;
|
case EncodedArrayValueIterator::ValueType::kType:
|
// Type initialization can load classes and execute bytecode through a class loader
|
// which can execute arbitrary bytecode. We do not optimize for known class loaders;
|
// kType is rarely used (if ever).
|
return false;
|
default:
|
// Other types in the encoded static field list are rejected by the DexFileVerifier.
|
LOG(FATAL) << "Unexpected type " << it.GetValueType();
|
UNREACHABLE();
|
}
|
}
|
}
|
// Check if the class has <clinit> that executes arbitrary code.
|
// Initialization of static fields of the class itself with constants is allowed.
|
ArtMethod* clinit = klass->FindClassInitializer(pointer_size);
|
if (clinit != nullptr) {
|
const DexFile& dex_file = *clinit->GetDexFile();
|
CodeItemInstructionAccessor accessor(dex_file, clinit->GetCodeItem());
|
for (DexInstructionPcPair it : accessor) {
|
switch (it->Opcode()) {
|
case Instruction::CONST_4:
|
case Instruction::CONST_16:
|
case Instruction::CONST:
|
case Instruction::CONST_HIGH16:
|
case Instruction::CONST_WIDE_16:
|
case Instruction::CONST_WIDE_32:
|
case Instruction::CONST_WIDE:
|
case Instruction::CONST_WIDE_HIGH16:
|
case Instruction::CONST_STRING:
|
case Instruction::CONST_STRING_JUMBO:
|
// Primitive, null or j.l.String initialization is permitted.
|
break;
|
case Instruction::RETURN_VOID:
|
case Instruction::RETURN_VOID_NO_BARRIER:
|
break;
|
case Instruction::SPUT:
|
case Instruction::SPUT_WIDE:
|
case Instruction::SPUT_OBJECT:
|
case Instruction::SPUT_BOOLEAN:
|
case Instruction::SPUT_BYTE:
|
case Instruction::SPUT_CHAR:
|
case Instruction::SPUT_SHORT:
|
// Only initialization of a static field of the same class is permitted.
|
if (dex_file.GetFieldId(it->VRegB_21c()).class_idx_ != klass->GetDexTypeIndex()) {
|
return false;
|
}
|
break;
|
case Instruction::NEW_ARRAY:
|
// Only primitive arrays are permitted.
|
if (Primitive::GetType(dex_file.GetTypeDescriptor(dex_file.GetTypeId(
|
dex::TypeIndex(it->VRegC_22c())))[1]) == Primitive::kPrimNot) {
|
return false;
|
}
|
break;
|
case Instruction::APUT:
|
case Instruction::APUT_WIDE:
|
case Instruction::APUT_BOOLEAN:
|
case Instruction::APUT_BYTE:
|
case Instruction::APUT_CHAR:
|
case Instruction::APUT_SHORT:
|
case Instruction::FILL_ARRAY_DATA:
|
case Instruction::NOP:
|
// Allow initialization of primitive arrays (only constants can be stored).
|
// Note: We expect NOPs used for fill-array-data-payload but accept all NOPs
|
// (even unreferenced switch payloads if they make it through the verifier).
|
break;
|
default:
|
return false;
|
}
|
}
|
}
|
return true;
|
}
|
|
static bool HasTrivialInitialization(ObjPtr<mirror::Class> cls,
|
const CompilerOptions& compiler_options)
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
Runtime* runtime = Runtime::Current();
|
PointerSize pointer_size = runtime->GetClassLinker()->GetImagePointerSize();
|
|
// Check the superclass chain.
|
for (ObjPtr<mirror::Class> klass = cls; klass != nullptr; klass = klass->GetSuperClass()) {
|
if (klass->IsInitialized() && IsInBootImage(klass, compiler_options)) {
|
break; // `klass` and its superclasses are already initialized in the boot image.
|
}
|
if (!HasTrivialClinit(klass, pointer_size)) {
|
return false;
|
}
|
}
|
|
// Also check interfaces with default methods as they need to be initialized as well.
|
ObjPtr<mirror::IfTable> iftable = cls->GetIfTable();
|
DCHECK(iftable != nullptr);
|
for (int32_t i = 0, count = iftable->Count(); i != count; ++i) {
|
ObjPtr<mirror::Class> iface = iftable->GetInterface(i);
|
if (!iface->HasDefaultMethods()) {
|
continue; // Initializing `cls` does not initialize this interface.
|
}
|
if (iface->IsInitialized() && IsInBootImage(iface, compiler_options)) {
|
continue; // This interface is already initialized in the boot image.
|
}
|
if (!HasTrivialClinit(iface, pointer_size)) {
|
return false;
|
}
|
}
|
return true;
|
}
|
|
bool HInstructionBuilder::IsInitialized(Handle<mirror::Class> cls) const {
|
if (cls == nullptr) {
|
return false;
|
}
|
|
// Check if the class will be initialized at runtime.
|
if (cls->IsInitialized()) {
|
Runtime* runtime = Runtime::Current();
|
if (!runtime->IsAotCompiler()) {
|
DCHECK(runtime->UseJitCompilation());
|
// For JIT, the class cannot revert to an uninitialized state.
|
return true;
|
}
|
// Assume loaded only if klass is in the boot image. App classes cannot be assumed
|
// loaded because we don't even know what class loader will be used to load them.
|
if (IsInBootImage(cls.Get(), code_generator_->GetCompilerOptions())) {
|
return true;
|
}
|
}
|
|
// We can avoid the class initialization check for `cls` in static methods and constructors
|
// in the very same class; invoking a static method involves a class initialization check
|
// and so does the instance allocation that must be executed before invoking a constructor.
|
// Other instance methods of the same class can run on an escaped instance
|
// of an erroneous class. Even a superclass may need to be checked as the subclass
|
// can be completely initialized while the superclass is initializing and the subclass
|
// remains initialized when the superclass initializer throws afterwards. b/62478025
|
// Note: The HClinitCheck+HInvokeStaticOrDirect merging can still apply.
|
auto is_static_method_or_constructor_of_cls = [cls](const DexCompilationUnit& compilation_unit)
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
return (compilation_unit.GetAccessFlags() & (kAccStatic | kAccConstructor)) != 0u &&
|
compilation_unit.GetCompilingClass().Get() == cls.Get();
|
};
|
if (is_static_method_or_constructor_of_cls(*outer_compilation_unit_) ||
|
// Check also the innermost method. Though excessive copies of ClinitCheck can be
|
// eliminated by GVN, that happens only after the decision whether to inline the
|
// graph or not and that may depend on the presence of the ClinitCheck.
|
// TODO: We should walk over the entire inlined method chain, but we don't pass that
|
// information to the builder.
|
is_static_method_or_constructor_of_cls(*dex_compilation_unit_)) {
|
return true;
|
}
|
|
// Otherwise, we may be able to avoid the check if `cls` is a superclass of a method being
|
// compiled here (anywhere in the inlining chain) as the `cls` must have started initializing
|
// before calling any `cls` or subclass methods. Static methods require a clinit check and
|
// instance methods require an instance which cannot be created before doing a clinit check.
|
// When a subclass of `cls` starts initializing, it starts initializing its superclass
|
// chain up to `cls` without running any bytecode, i.e. without any opportunity for circular
|
// initialization weirdness.
|
//
|
// If the initialization of `cls` is trivial (`cls` and its superclasses and superinterfaces
|
// with default methods initialize only their own static fields using constant values), it must
|
// complete, either successfully or by throwing and marking `cls` erroneous, without allocating
|
// any instances of `cls` or subclasses (or any other class) and without calling any methods.
|
// If it completes by throwing, no instances of `cls` shall be created and no subclass method
|
// bytecode shall execute (see above), therefore the instruction we're building shall be
|
// unreachable. By reaching the instruction, we know that `cls` was initialized successfully.
|
//
|
// TODO: We should walk over the entire inlined methods chain, but we don't pass that
|
// information to the builder. (We could also check if we're guaranteed a non-null instance
|
// of `cls` at this location but that's outside the scope of the instruction builder.)
|
bool is_subclass = IsSubClass(outer_compilation_unit_->GetCompilingClass().Get(), cls.Get());
|
if (dex_compilation_unit_ != outer_compilation_unit_) {
|
is_subclass = is_subclass ||
|
IsSubClass(dex_compilation_unit_->GetCompilingClass().Get(), cls.Get());
|
}
|
if (is_subclass && HasTrivialInitialization(cls.Get(), code_generator_->GetCompilerOptions())) {
|
return true;
|
}
|
|
return false;
|
}
|
|
HClinitCheck* HInstructionBuilder::ProcessClinitCheckForInvoke(
|
uint32_t dex_pc,
|
ArtMethod* resolved_method,
|
HInvokeStaticOrDirect::ClinitCheckRequirement* clinit_check_requirement) {
|
Handle<mirror::Class> klass = handles_->NewHandle(resolved_method->GetDeclaringClass());
|
|
HClinitCheck* clinit_check = nullptr;
|
if (IsInitialized(klass)) {
|
*clinit_check_requirement = HInvokeStaticOrDirect::ClinitCheckRequirement::kNone;
|
} else {
|
HLoadClass* cls = BuildLoadClass(klass->GetDexTypeIndex(),
|
klass->GetDexFile(),
|
klass,
|
dex_pc,
|
/* needs_access_check= */ false);
|
if (cls != nullptr) {
|
*clinit_check_requirement = HInvokeStaticOrDirect::ClinitCheckRequirement::kExplicit;
|
clinit_check = new (allocator_) HClinitCheck(cls, dex_pc);
|
AppendInstruction(clinit_check);
|
}
|
}
|
return clinit_check;
|
}
|
|
bool HInstructionBuilder::SetupInvokeArguments(HInvoke* invoke,
|
const InstructionOperands& operands,
|
const char* shorty,
|
size_t start_index,
|
size_t* argument_index) {
|
uint32_t shorty_index = 1; // Skip the return type.
|
const size_t number_of_operands = operands.GetNumberOfOperands();
|
for (size_t i = start_index;
|
// Make sure we don't go over the expected arguments or over the number of
|
// dex registers given. If the instruction was seen as dead by the verifier,
|
// it hasn't been properly checked.
|
(i < number_of_operands) && (*argument_index < invoke->GetNumberOfArguments());
|
i++, (*argument_index)++) {
|
DataType::Type type = DataType::FromShorty(shorty[shorty_index++]);
|
bool is_wide = (type == DataType::Type::kInt64) || (type == DataType::Type::kFloat64);
|
if (is_wide && ((i + 1 == number_of_operands) ||
|
(operands.GetOperand(i) + 1 != operands.GetOperand(i + 1)))) {
|
// Longs and doubles should be in pairs, that is, sequential registers. The verifier should
|
// reject any class where this is violated. However, the verifier only does these checks
|
// on non trivially dead instructions, so we just bailout the compilation.
|
VLOG(compiler) << "Did not compile "
|
<< dex_file_->PrettyMethod(dex_compilation_unit_->GetDexMethodIndex())
|
<< " because of non-sequential dex register pair in wide argument";
|
MaybeRecordStat(compilation_stats_,
|
MethodCompilationStat::kNotCompiledMalformedOpcode);
|
return false;
|
}
|
HInstruction* arg = LoadLocal(operands.GetOperand(i), type);
|
invoke->SetArgumentAt(*argument_index, arg);
|
if (is_wide) {
|
i++;
|
}
|
}
|
|
if (*argument_index != invoke->GetNumberOfArguments()) {
|
VLOG(compiler) << "Did not compile "
|
<< dex_file_->PrettyMethod(dex_compilation_unit_->GetDexMethodIndex())
|
<< " because of wrong number of arguments in invoke instruction";
|
MaybeRecordStat(compilation_stats_,
|
MethodCompilationStat::kNotCompiledMalformedOpcode);
|
return false;
|
}
|
|
if (invoke->IsInvokeStaticOrDirect() &&
|
HInvokeStaticOrDirect::NeedsCurrentMethodInput(
|
invoke->AsInvokeStaticOrDirect()->GetMethodLoadKind())) {
|
invoke->SetArgumentAt(*argument_index, graph_->GetCurrentMethod());
|
(*argument_index)++;
|
}
|
|
return true;
|
}
|
|
bool HInstructionBuilder::HandleInvoke(HInvoke* invoke,
|
const InstructionOperands& operands,
|
const char* shorty,
|
bool is_unresolved,
|
HClinitCheck* clinit_check) {
|
DCHECK(!invoke->IsInvokeStaticOrDirect() || !invoke->AsInvokeStaticOrDirect()->IsStringInit());
|
|
size_t start_index = 0;
|
size_t argument_index = 0;
|
if (invoke->GetInvokeType() != InvokeType::kStatic) { // Instance call.
|
uint32_t obj_reg = operands.GetOperand(0);
|
HInstruction* arg = is_unresolved
|
? LoadLocal(obj_reg, DataType::Type::kReference)
|
: LoadNullCheckedLocal(obj_reg, invoke->GetDexPc());
|
invoke->SetArgumentAt(0, arg);
|
start_index = 1;
|
argument_index = 1;
|
}
|
|
if (!SetupInvokeArguments(invoke, operands, shorty, start_index, &argument_index)) {
|
return false;
|
}
|
|
if (clinit_check != nullptr) {
|
// Add the class initialization check as last input of `invoke`.
|
DCHECK(invoke->IsInvokeStaticOrDirect());
|
DCHECK(invoke->AsInvokeStaticOrDirect()->GetClinitCheckRequirement()
|
== HInvokeStaticOrDirect::ClinitCheckRequirement::kExplicit);
|
invoke->SetArgumentAt(argument_index, clinit_check);
|
argument_index++;
|
}
|
|
AppendInstruction(invoke);
|
latest_result_ = invoke;
|
|
return true;
|
}
|
|
bool HInstructionBuilder::HandleStringInit(HInvoke* invoke,
|
const InstructionOperands& operands,
|
const char* shorty) {
|
DCHECK(invoke->IsInvokeStaticOrDirect());
|
DCHECK(invoke->AsInvokeStaticOrDirect()->IsStringInit());
|
|
size_t start_index = 1;
|
size_t argument_index = 0;
|
if (!SetupInvokeArguments(invoke, operands, shorty, start_index, &argument_index)) {
|
return false;
|
}
|
|
AppendInstruction(invoke);
|
|
// This is a StringFactory call, not an actual String constructor. Its result
|
// replaces the empty String pre-allocated by NewInstance.
|
uint32_t orig_this_reg = operands.GetOperand(0);
|
HInstruction* arg_this = LoadLocal(orig_this_reg, DataType::Type::kReference);
|
|
// Replacing the NewInstance might render it redundant. Keep a list of these
|
// to be visited once it is clear whether it has remaining uses.
|
if (arg_this->IsNewInstance()) {
|
ssa_builder_->AddUninitializedString(arg_this->AsNewInstance());
|
} else {
|
DCHECK(arg_this->IsPhi());
|
// We can get a phi as input of a String.<init> if there is a loop between the
|
// allocation and the String.<init> call. As we don't know which other phis might alias
|
// with `arg_this`, we keep a record of those invocations so we can later replace
|
// the allocation with the invocation.
|
// Add the actual 'this' input so the analysis knows what is the allocation instruction.
|
// The input will be removed during the analysis.
|
invoke->AddInput(arg_this);
|
ssa_builder_->AddUninitializedStringPhi(invoke);
|
}
|
// Walk over all vregs and replace any occurrence of `arg_this` with `invoke`.
|
for (size_t vreg = 0, e = current_locals_->size(); vreg < e; ++vreg) {
|
if ((*current_locals_)[vreg] == arg_this) {
|
(*current_locals_)[vreg] = invoke;
|
}
|
}
|
return true;
|
}
|
|
static DataType::Type GetFieldAccessType(const DexFile& dex_file, uint16_t field_index) {
|
const dex::FieldId& field_id = dex_file.GetFieldId(field_index);
|
const char* type = dex_file.GetFieldTypeDescriptor(field_id);
|
return DataType::FromShorty(type[0]);
|
}
|
|
bool HInstructionBuilder::BuildInstanceFieldAccess(const Instruction& instruction,
|
uint32_t dex_pc,
|
bool is_put,
|
size_t quicken_index) {
|
uint32_t source_or_dest_reg = instruction.VRegA_22c();
|
uint32_t obj_reg = instruction.VRegB_22c();
|
uint16_t field_index;
|
if (instruction.IsQuickened()) {
|
if (!CanDecodeQuickenedInfo()) {
|
VLOG(compiler) << "Not compiled: Could not decode quickened instruction "
|
<< instruction.Opcode();
|
return false;
|
}
|
field_index = LookupQuickenedInfo(quicken_index);
|
} else {
|
field_index = instruction.VRegC_22c();
|
}
|
|
ScopedObjectAccess soa(Thread::Current());
|
ArtField* resolved_field = ResolveField(field_index, /* is_static= */ false, is_put);
|
|
// Generate an explicit null check on the reference, unless the field access
|
// is unresolved. In that case, we rely on the runtime to perform various
|
// checks first, followed by a null check.
|
HInstruction* object = (resolved_field == nullptr)
|
? LoadLocal(obj_reg, DataType::Type::kReference)
|
: LoadNullCheckedLocal(obj_reg, dex_pc);
|
|
DataType::Type field_type = GetFieldAccessType(*dex_file_, field_index);
|
if (is_put) {
|
HInstruction* value = LoadLocal(source_or_dest_reg, field_type);
|
HInstruction* field_set = nullptr;
|
if (resolved_field == nullptr) {
|
MaybeRecordStat(compilation_stats_,
|
MethodCompilationStat::kUnresolvedField);
|
field_set = new (allocator_) HUnresolvedInstanceFieldSet(object,
|
value,
|
field_type,
|
field_index,
|
dex_pc);
|
} else {
|
uint16_t class_def_index = resolved_field->GetDeclaringClass()->GetDexClassDefIndex();
|
field_set = new (allocator_) HInstanceFieldSet(object,
|
value,
|
resolved_field,
|
field_type,
|
resolved_field->GetOffset(),
|
resolved_field->IsVolatile(),
|
field_index,
|
class_def_index,
|
*dex_file_,
|
dex_pc);
|
}
|
AppendInstruction(field_set);
|
} else {
|
HInstruction* field_get = nullptr;
|
if (resolved_field == nullptr) {
|
MaybeRecordStat(compilation_stats_,
|
MethodCompilationStat::kUnresolvedField);
|
field_get = new (allocator_) HUnresolvedInstanceFieldGet(object,
|
field_type,
|
field_index,
|
dex_pc);
|
} else {
|
uint16_t class_def_index = resolved_field->GetDeclaringClass()->GetDexClassDefIndex();
|
field_get = new (allocator_) HInstanceFieldGet(object,
|
resolved_field,
|
field_type,
|
resolved_field->GetOffset(),
|
resolved_field->IsVolatile(),
|
field_index,
|
class_def_index,
|
*dex_file_,
|
dex_pc);
|
}
|
AppendInstruction(field_get);
|
UpdateLocal(source_or_dest_reg, field_get);
|
}
|
|
return true;
|
}
|
|
void HInstructionBuilder::BuildUnresolvedStaticFieldAccess(const Instruction& instruction,
|
uint32_t dex_pc,
|
bool is_put,
|
DataType::Type field_type) {
|
uint32_t source_or_dest_reg = instruction.VRegA_21c();
|
uint16_t field_index = instruction.VRegB_21c();
|
|
if (is_put) {
|
HInstruction* value = LoadLocal(source_or_dest_reg, field_type);
|
AppendInstruction(
|
new (allocator_) HUnresolvedStaticFieldSet(value, field_type, field_index, dex_pc));
|
} else {
|
AppendInstruction(new (allocator_) HUnresolvedStaticFieldGet(field_type, field_index, dex_pc));
|
UpdateLocal(source_or_dest_reg, current_block_->GetLastInstruction());
|
}
|
}
|
|
ArtField* HInstructionBuilder::ResolveField(uint16_t field_idx, bool is_static, bool is_put) {
|
ScopedObjectAccess soa(Thread::Current());
|
|
ClassLinker* class_linker = dex_compilation_unit_->GetClassLinker();
|
Handle<mirror::ClassLoader> class_loader = dex_compilation_unit_->GetClassLoader();
|
|
ArtField* resolved_field = class_linker->ResolveField(field_idx,
|
dex_compilation_unit_->GetDexCache(),
|
class_loader,
|
is_static);
|
DCHECK_EQ(resolved_field == nullptr, soa.Self()->IsExceptionPending());
|
if (UNLIKELY(resolved_field == nullptr)) {
|
// Clean up any exception left by field resolution.
|
soa.Self()->ClearException();
|
return nullptr;
|
}
|
|
// Check static/instance. The class linker has a fast path for looking into the dex cache
|
// and does not check static/instance if it hits it.
|
if (UNLIKELY(resolved_field->IsStatic() != is_static)) {
|
return nullptr;
|
}
|
|
// Check access.
|
Handle<mirror::Class> compiling_class = dex_compilation_unit_->GetCompilingClass();
|
if (compiling_class == nullptr) {
|
if (!resolved_field->IsPublic()) {
|
return nullptr;
|
}
|
} else if (!compiling_class->CanAccessResolvedField(resolved_field->GetDeclaringClass(),
|
resolved_field,
|
dex_compilation_unit_->GetDexCache().Get(),
|
field_idx)) {
|
return nullptr;
|
}
|
|
if (is_put &&
|
resolved_field->IsFinal() &&
|
(compiling_class.Get() != resolved_field->GetDeclaringClass())) {
|
// Final fields can only be updated within their own class.
|
// TODO: Only allow it in constructors. b/34966607.
|
return nullptr;
|
}
|
|
return resolved_field;
|
}
|
|
void HInstructionBuilder::BuildStaticFieldAccess(const Instruction& instruction,
|
uint32_t dex_pc,
|
bool is_put) {
|
uint32_t source_or_dest_reg = instruction.VRegA_21c();
|
uint16_t field_index = instruction.VRegB_21c();
|
|
ScopedObjectAccess soa(Thread::Current());
|
ArtField* resolved_field = ResolveField(field_index, /* is_static= */ true, is_put);
|
|
if (resolved_field == nullptr) {
|
MaybeRecordStat(compilation_stats_,
|
MethodCompilationStat::kUnresolvedField);
|
DataType::Type field_type = GetFieldAccessType(*dex_file_, field_index);
|
BuildUnresolvedStaticFieldAccess(instruction, dex_pc, is_put, field_type);
|
return;
|
}
|
|
DataType::Type field_type = GetFieldAccessType(*dex_file_, field_index);
|
|
Handle<mirror::Class> klass = handles_->NewHandle(resolved_field->GetDeclaringClass());
|
HLoadClass* constant = BuildLoadClass(klass->GetDexTypeIndex(),
|
klass->GetDexFile(),
|
klass,
|
dex_pc,
|
/* needs_access_check= */ false);
|
|
if (constant == nullptr) {
|
// The class cannot be referenced from this compiled code. Generate
|
// an unresolved access.
|
MaybeRecordStat(compilation_stats_,
|
MethodCompilationStat::kUnresolvedFieldNotAFastAccess);
|
BuildUnresolvedStaticFieldAccess(instruction, dex_pc, is_put, field_type);
|
return;
|
}
|
|
HInstruction* cls = constant;
|
if (!IsInitialized(klass)) {
|
cls = new (allocator_) HClinitCheck(constant, dex_pc);
|
AppendInstruction(cls);
|
}
|
|
uint16_t class_def_index = klass->GetDexClassDefIndex();
|
if (is_put) {
|
// We need to keep the class alive before loading the value.
|
HInstruction* value = LoadLocal(source_or_dest_reg, field_type);
|
DCHECK_EQ(HPhi::ToPhiType(value->GetType()), HPhi::ToPhiType(field_type));
|
AppendInstruction(new (allocator_) HStaticFieldSet(cls,
|
value,
|
resolved_field,
|
field_type,
|
resolved_field->GetOffset(),
|
resolved_field->IsVolatile(),
|
field_index,
|
class_def_index,
|
*dex_file_,
|
dex_pc));
|
} else {
|
AppendInstruction(new (allocator_) HStaticFieldGet(cls,
|
resolved_field,
|
field_type,
|
resolved_field->GetOffset(),
|
resolved_field->IsVolatile(),
|
field_index,
|
class_def_index,
|
*dex_file_,
|
dex_pc));
|
UpdateLocal(source_or_dest_reg, current_block_->GetLastInstruction());
|
}
|
}
|
|
void HInstructionBuilder::BuildCheckedDivRem(uint16_t out_vreg,
|
uint16_t first_vreg,
|
int64_t second_vreg_or_constant,
|
uint32_t dex_pc,
|
DataType::Type type,
|
bool second_is_constant,
|
bool isDiv) {
|
DCHECK(type == DataType::Type::kInt32 || type == DataType::Type::kInt64);
|
|
HInstruction* first = LoadLocal(first_vreg, type);
|
HInstruction* second = nullptr;
|
if (second_is_constant) {
|
if (type == DataType::Type::kInt32) {
|
second = graph_->GetIntConstant(second_vreg_or_constant, dex_pc);
|
} else {
|
second = graph_->GetLongConstant(second_vreg_or_constant, dex_pc);
|
}
|
} else {
|
second = LoadLocal(second_vreg_or_constant, type);
|
}
|
|
if (!second_is_constant
|
|| (type == DataType::Type::kInt32 && second->AsIntConstant()->GetValue() == 0)
|
|| (type == DataType::Type::kInt64 && second->AsLongConstant()->GetValue() == 0)) {
|
second = new (allocator_) HDivZeroCheck(second, dex_pc);
|
AppendInstruction(second);
|
}
|
|
if (isDiv) {
|
AppendInstruction(new (allocator_) HDiv(type, first, second, dex_pc));
|
} else {
|
AppendInstruction(new (allocator_) HRem(type, first, second, dex_pc));
|
}
|
UpdateLocal(out_vreg, current_block_->GetLastInstruction());
|
}
|
|
void HInstructionBuilder::BuildArrayAccess(const Instruction& instruction,
|
uint32_t dex_pc,
|
bool is_put,
|
DataType::Type anticipated_type) {
|
uint8_t source_or_dest_reg = instruction.VRegA_23x();
|
uint8_t array_reg = instruction.VRegB_23x();
|
uint8_t index_reg = instruction.VRegC_23x();
|
|
HInstruction* object = LoadNullCheckedLocal(array_reg, dex_pc);
|
HInstruction* length = new (allocator_) HArrayLength(object, dex_pc);
|
AppendInstruction(length);
|
HInstruction* index = LoadLocal(index_reg, DataType::Type::kInt32);
|
index = new (allocator_) HBoundsCheck(index, length, dex_pc);
|
AppendInstruction(index);
|
if (is_put) {
|
HInstruction* value = LoadLocal(source_or_dest_reg, anticipated_type);
|
// TODO: Insert a type check node if the type is Object.
|
HArraySet* aset = new (allocator_) HArraySet(object, index, value, anticipated_type, dex_pc);
|
ssa_builder_->MaybeAddAmbiguousArraySet(aset);
|
AppendInstruction(aset);
|
} else {
|
HArrayGet* aget = new (allocator_) HArrayGet(object, index, anticipated_type, dex_pc);
|
ssa_builder_->MaybeAddAmbiguousArrayGet(aget);
|
AppendInstruction(aget);
|
UpdateLocal(source_or_dest_reg, current_block_->GetLastInstruction());
|
}
|
graph_->SetHasBoundsChecks(true);
|
}
|
|
HNewArray* HInstructionBuilder::BuildNewArray(uint32_t dex_pc,
|
dex::TypeIndex type_index,
|
HInstruction* length) {
|
HLoadClass* cls = BuildLoadClass(type_index, dex_pc);
|
|
const char* descriptor = dex_file_->GetTypeDescriptor(dex_file_->GetTypeId(type_index));
|
DCHECK_EQ(descriptor[0], '[');
|
size_t component_type_shift = Primitive::ComponentSizeShift(Primitive::GetType(descriptor[1]));
|
|
HNewArray* new_array = new (allocator_) HNewArray(cls, length, dex_pc, component_type_shift);
|
AppendInstruction(new_array);
|
return new_array;
|
}
|
|
HNewArray* HInstructionBuilder::BuildFilledNewArray(uint32_t dex_pc,
|
dex::TypeIndex type_index,
|
const InstructionOperands& operands) {
|
const size_t number_of_operands = operands.GetNumberOfOperands();
|
HInstruction* length = graph_->GetIntConstant(number_of_operands, dex_pc);
|
|
HNewArray* new_array = BuildNewArray(dex_pc, type_index, length);
|
const char* descriptor = dex_file_->StringByTypeIdx(type_index);
|
DCHECK_EQ(descriptor[0], '[') << descriptor;
|
char primitive = descriptor[1];
|
DCHECK(primitive == 'I'
|
|| primitive == 'L'
|
|| primitive == '[') << descriptor;
|
bool is_reference_array = (primitive == 'L') || (primitive == '[');
|
DataType::Type type = is_reference_array ? DataType::Type::kReference : DataType::Type::kInt32;
|
|
for (size_t i = 0; i < number_of_operands; ++i) {
|
HInstruction* value = LoadLocal(operands.GetOperand(i), type);
|
HInstruction* index = graph_->GetIntConstant(i, dex_pc);
|
HArraySet* aset = new (allocator_) HArraySet(new_array, index, value, type, dex_pc);
|
ssa_builder_->MaybeAddAmbiguousArraySet(aset);
|
AppendInstruction(aset);
|
}
|
latest_result_ = new_array;
|
|
return new_array;
|
}
|
|
template <typename T>
|
void HInstructionBuilder::BuildFillArrayData(HInstruction* object,
|
const T* data,
|
uint32_t element_count,
|
DataType::Type anticipated_type,
|
uint32_t dex_pc) {
|
for (uint32_t i = 0; i < element_count; ++i) {
|
HInstruction* index = graph_->GetIntConstant(i, dex_pc);
|
HInstruction* value = graph_->GetIntConstant(data[i], dex_pc);
|
HArraySet* aset = new (allocator_) HArraySet(object, index, value, anticipated_type, dex_pc);
|
ssa_builder_->MaybeAddAmbiguousArraySet(aset);
|
AppendInstruction(aset);
|
}
|
}
|
|
void HInstructionBuilder::BuildFillArrayData(const Instruction& instruction, uint32_t dex_pc) {
|
HInstruction* array = LoadNullCheckedLocal(instruction.VRegA_31t(), dex_pc);
|
|
int32_t payload_offset = instruction.VRegB_31t() + dex_pc;
|
const Instruction::ArrayDataPayload* payload =
|
reinterpret_cast<const Instruction::ArrayDataPayload*>(
|
code_item_accessor_.Insns() + payload_offset);
|
const uint8_t* data = payload->data;
|
uint32_t element_count = payload->element_count;
|
|
if (element_count == 0u) {
|
// For empty payload we emit only the null check above.
|
return;
|
}
|
|
HInstruction* length = new (allocator_) HArrayLength(array, dex_pc);
|
AppendInstruction(length);
|
|
// Implementation of this DEX instruction seems to be that the bounds check is
|
// done before doing any stores.
|
HInstruction* last_index = graph_->GetIntConstant(payload->element_count - 1, dex_pc);
|
AppendInstruction(new (allocator_) HBoundsCheck(last_index, length, dex_pc));
|
|
switch (payload->element_width) {
|
case 1:
|
BuildFillArrayData(array,
|
reinterpret_cast<const int8_t*>(data),
|
element_count,
|
DataType::Type::kInt8,
|
dex_pc);
|
break;
|
case 2:
|
BuildFillArrayData(array,
|
reinterpret_cast<const int16_t*>(data),
|
element_count,
|
DataType::Type::kInt16,
|
dex_pc);
|
break;
|
case 4:
|
BuildFillArrayData(array,
|
reinterpret_cast<const int32_t*>(data),
|
element_count,
|
DataType::Type::kInt32,
|
dex_pc);
|
break;
|
case 8:
|
BuildFillWideArrayData(array,
|
reinterpret_cast<const int64_t*>(data),
|
element_count,
|
dex_pc);
|
break;
|
default:
|
LOG(FATAL) << "Unknown element width for " << payload->element_width;
|
}
|
graph_->SetHasBoundsChecks(true);
|
}
|
|
void HInstructionBuilder::BuildFillWideArrayData(HInstruction* object,
|
const int64_t* data,
|
uint32_t element_count,
|
uint32_t dex_pc) {
|
for (uint32_t i = 0; i < element_count; ++i) {
|
HInstruction* index = graph_->GetIntConstant(i, dex_pc);
|
HInstruction* value = graph_->GetLongConstant(data[i], dex_pc);
|
HArraySet* aset =
|
new (allocator_) HArraySet(object, index, value, DataType::Type::kInt64, dex_pc);
|
ssa_builder_->MaybeAddAmbiguousArraySet(aset);
|
AppendInstruction(aset);
|
}
|
}
|
|
void HInstructionBuilder::BuildLoadString(dex::StringIndex string_index, uint32_t dex_pc) {
|
HLoadString* load_string =
|
new (allocator_) HLoadString(graph_->GetCurrentMethod(), string_index, *dex_file_, dex_pc);
|
HSharpening::ProcessLoadString(load_string,
|
code_generator_,
|
*dex_compilation_unit_,
|
handles_);
|
AppendInstruction(load_string);
|
}
|
|
HLoadClass* HInstructionBuilder::BuildLoadClass(dex::TypeIndex type_index, uint32_t dex_pc) {
|
ScopedObjectAccess soa(Thread::Current());
|
const DexFile& dex_file = *dex_compilation_unit_->GetDexFile();
|
Handle<mirror::Class> klass = ResolveClass(soa, type_index);
|
bool needs_access_check = LoadClassNeedsAccessCheck(klass);
|
return BuildLoadClass(type_index, dex_file, klass, dex_pc, needs_access_check);
|
}
|
|
HLoadClass* HInstructionBuilder::BuildLoadClass(dex::TypeIndex type_index,
|
const DexFile& dex_file,
|
Handle<mirror::Class> klass,
|
uint32_t dex_pc,
|
bool needs_access_check) {
|
// Try to find a reference in the compiling dex file.
|
const DexFile* actual_dex_file = &dex_file;
|
if (!IsSameDexFile(dex_file, *dex_compilation_unit_->GetDexFile())) {
|
dex::TypeIndex local_type_index =
|
klass->FindTypeIndexInOtherDexFile(*dex_compilation_unit_->GetDexFile());
|
if (local_type_index.IsValid()) {
|
type_index = local_type_index;
|
actual_dex_file = dex_compilation_unit_->GetDexFile();
|
}
|
}
|
|
// Note: `klass` must be from `handles_`.
|
bool is_referrers_class =
|
(klass != nullptr) && (outer_compilation_unit_->GetCompilingClass().Get() == klass.Get());
|
HLoadClass* load_class = new (allocator_) HLoadClass(
|
graph_->GetCurrentMethod(),
|
type_index,
|
*actual_dex_file,
|
klass,
|
is_referrers_class,
|
dex_pc,
|
needs_access_check);
|
|
HLoadClass::LoadKind load_kind = HSharpening::ComputeLoadClassKind(load_class,
|
code_generator_,
|
*dex_compilation_unit_);
|
|
if (load_kind == HLoadClass::LoadKind::kInvalid) {
|
// We actually cannot reference this class, we're forced to bail.
|
return nullptr;
|
}
|
// Load kind must be set before inserting the instruction into the graph.
|
load_class->SetLoadKind(load_kind);
|
AppendInstruction(load_class);
|
return load_class;
|
}
|
|
Handle<mirror::Class> HInstructionBuilder::ResolveClass(ScopedObjectAccess& soa,
|
dex::TypeIndex type_index) {
|
auto it = class_cache_.find(type_index);
|
if (it != class_cache_.end()) {
|
return it->second;
|
}
|
|
ObjPtr<mirror::Class> klass = dex_compilation_unit_->GetClassLinker()->ResolveType(
|
type_index, dex_compilation_unit_->GetDexCache(), dex_compilation_unit_->GetClassLoader());
|
DCHECK_EQ(klass == nullptr, soa.Self()->IsExceptionPending());
|
soa.Self()->ClearException(); // Clean up the exception left by type resolution if any.
|
|
Handle<mirror::Class> h_klass = handles_->NewHandle(klass);
|
class_cache_.Put(type_index, h_klass);
|
return h_klass;
|
}
|
|
bool HInstructionBuilder::LoadClassNeedsAccessCheck(Handle<mirror::Class> klass) {
|
if (klass == nullptr) {
|
return true;
|
} else if (klass->IsPublic()) {
|
return false;
|
} else {
|
ObjPtr<mirror::Class> compiling_class = dex_compilation_unit_->GetCompilingClass().Get();
|
return compiling_class == nullptr || !compiling_class->CanAccess(klass.Get());
|
}
|
}
|
|
void HInstructionBuilder::BuildLoadMethodHandle(uint16_t method_handle_index, uint32_t dex_pc) {
|
const DexFile& dex_file = *dex_compilation_unit_->GetDexFile();
|
HLoadMethodHandle* load_method_handle = new (allocator_) HLoadMethodHandle(
|
graph_->GetCurrentMethod(), method_handle_index, dex_file, dex_pc);
|
AppendInstruction(load_method_handle);
|
}
|
|
void HInstructionBuilder::BuildLoadMethodType(dex::ProtoIndex proto_index, uint32_t dex_pc) {
|
const DexFile& dex_file = *dex_compilation_unit_->GetDexFile();
|
HLoadMethodType* load_method_type =
|
new (allocator_) HLoadMethodType(graph_->GetCurrentMethod(), proto_index, dex_file, dex_pc);
|
AppendInstruction(load_method_type);
|
}
|
|
void HInstructionBuilder::BuildTypeCheck(const Instruction& instruction,
|
uint8_t destination,
|
uint8_t reference,
|
dex::TypeIndex type_index,
|
uint32_t dex_pc) {
|
HInstruction* object = LoadLocal(reference, DataType::Type::kReference);
|
|
ScopedObjectAccess soa(Thread::Current());
|
const DexFile& dex_file = *dex_compilation_unit_->GetDexFile();
|
Handle<mirror::Class> klass = ResolveClass(soa, type_index);
|
bool needs_access_check = LoadClassNeedsAccessCheck(klass);
|
TypeCheckKind check_kind = HSharpening::ComputeTypeCheckKind(
|
klass.Get(), code_generator_, needs_access_check);
|
|
HInstruction* class_or_null = nullptr;
|
HIntConstant* bitstring_path_to_root = nullptr;
|
HIntConstant* bitstring_mask = nullptr;
|
if (check_kind == TypeCheckKind::kBitstringCheck) {
|
// TODO: Allow using the bitstring check also if we need an access check.
|
DCHECK(!needs_access_check);
|
class_or_null = graph_->GetNullConstant(dex_pc);
|
MutexLock subtype_check_lock(Thread::Current(), *Locks::subtype_check_lock_);
|
uint32_t path_to_root =
|
SubtypeCheck<ObjPtr<mirror::Class>>::GetEncodedPathToRootForTarget(klass.Get());
|
uint32_t mask = SubtypeCheck<ObjPtr<mirror::Class>>::GetEncodedPathToRootMask(klass.Get());
|
bitstring_path_to_root = graph_->GetIntConstant(static_cast<int32_t>(path_to_root), dex_pc);
|
bitstring_mask = graph_->GetIntConstant(static_cast<int32_t>(mask), dex_pc);
|
} else {
|
class_or_null = BuildLoadClass(type_index, dex_file, klass, dex_pc, needs_access_check);
|
}
|
DCHECK(class_or_null != nullptr);
|
|
if (instruction.Opcode() == Instruction::INSTANCE_OF) {
|
AppendInstruction(new (allocator_) HInstanceOf(object,
|
class_or_null,
|
check_kind,
|
klass,
|
dex_pc,
|
allocator_,
|
bitstring_path_to_root,
|
bitstring_mask));
|
UpdateLocal(destination, current_block_->GetLastInstruction());
|
} else {
|
DCHECK_EQ(instruction.Opcode(), Instruction::CHECK_CAST);
|
// We emit a CheckCast followed by a BoundType. CheckCast is a statement
|
// which may throw. If it succeeds BoundType sets the new type of `object`
|
// for all subsequent uses.
|
AppendInstruction(
|
new (allocator_) HCheckCast(object,
|
class_or_null,
|
check_kind,
|
klass,
|
dex_pc,
|
allocator_,
|
bitstring_path_to_root,
|
bitstring_mask));
|
AppendInstruction(new (allocator_) HBoundType(object, dex_pc));
|
UpdateLocal(reference, current_block_->GetLastInstruction());
|
}
|
}
|
|
bool HInstructionBuilder::CanDecodeQuickenedInfo() const {
|
return !quicken_info_.IsNull();
|
}
|
|
uint16_t HInstructionBuilder::LookupQuickenedInfo(uint32_t quicken_index) {
|
DCHECK(CanDecodeQuickenedInfo());
|
return quicken_info_.GetData(quicken_index);
|
}
|
|
bool HInstructionBuilder::ProcessDexInstruction(const Instruction& instruction,
|
uint32_t dex_pc,
|
size_t quicken_index) {
|
switch (instruction.Opcode()) {
|
case Instruction::CONST_4: {
|
int32_t register_index = instruction.VRegA();
|
HIntConstant* constant = graph_->GetIntConstant(instruction.VRegB_11n(), dex_pc);
|
UpdateLocal(register_index, constant);
|
break;
|
}
|
|
case Instruction::CONST_16: {
|
int32_t register_index = instruction.VRegA();
|
HIntConstant* constant = graph_->GetIntConstant(instruction.VRegB_21s(), dex_pc);
|
UpdateLocal(register_index, constant);
|
break;
|
}
|
|
case Instruction::CONST: {
|
int32_t register_index = instruction.VRegA();
|
HIntConstant* constant = graph_->GetIntConstant(instruction.VRegB_31i(), dex_pc);
|
UpdateLocal(register_index, constant);
|
break;
|
}
|
|
case Instruction::CONST_HIGH16: {
|
int32_t register_index = instruction.VRegA();
|
HIntConstant* constant = graph_->GetIntConstant(instruction.VRegB_21h() << 16, dex_pc);
|
UpdateLocal(register_index, constant);
|
break;
|
}
|
|
case Instruction::CONST_WIDE_16: {
|
int32_t register_index = instruction.VRegA();
|
// Get 16 bits of constant value, sign extended to 64 bits.
|
int64_t value = instruction.VRegB_21s();
|
value <<= 48;
|
value >>= 48;
|
HLongConstant* constant = graph_->GetLongConstant(value, dex_pc);
|
UpdateLocal(register_index, constant);
|
break;
|
}
|
|
case Instruction::CONST_WIDE_32: {
|
int32_t register_index = instruction.VRegA();
|
// Get 32 bits of constant value, sign extended to 64 bits.
|
int64_t value = instruction.VRegB_31i();
|
value <<= 32;
|
value >>= 32;
|
HLongConstant* constant = graph_->GetLongConstant(value, dex_pc);
|
UpdateLocal(register_index, constant);
|
break;
|
}
|
|
case Instruction::CONST_WIDE: {
|
int32_t register_index = instruction.VRegA();
|
HLongConstant* constant = graph_->GetLongConstant(instruction.VRegB_51l(), dex_pc);
|
UpdateLocal(register_index, constant);
|
break;
|
}
|
|
case Instruction::CONST_WIDE_HIGH16: {
|
int32_t register_index = instruction.VRegA();
|
int64_t value = static_cast<int64_t>(instruction.VRegB_21h()) << 48;
|
HLongConstant* constant = graph_->GetLongConstant(value, dex_pc);
|
UpdateLocal(register_index, constant);
|
break;
|
}
|
|
// Note that the SSA building will refine the types.
|
case Instruction::MOVE:
|
case Instruction::MOVE_FROM16:
|
case Instruction::MOVE_16: {
|
HInstruction* value = LoadLocal(instruction.VRegB(), DataType::Type::kInt32);
|
UpdateLocal(instruction.VRegA(), value);
|
break;
|
}
|
|
// Note that the SSA building will refine the types.
|
case Instruction::MOVE_WIDE:
|
case Instruction::MOVE_WIDE_FROM16:
|
case Instruction::MOVE_WIDE_16: {
|
HInstruction* value = LoadLocal(instruction.VRegB(), DataType::Type::kInt64);
|
UpdateLocal(instruction.VRegA(), value);
|
break;
|
}
|
|
case Instruction::MOVE_OBJECT:
|
case Instruction::MOVE_OBJECT_16:
|
case Instruction::MOVE_OBJECT_FROM16: {
|
// The verifier has no notion of a null type, so a move-object of constant 0
|
// will lead to the same constant 0 in the destination register. To mimic
|
// this behavior, we just pretend we haven't seen a type change (int to reference)
|
// for the 0 constant and phis. We rely on our type propagation to eventually get the
|
// types correct.
|
uint32_t reg_number = instruction.VRegB();
|
HInstruction* value = (*current_locals_)[reg_number];
|
if (value->IsIntConstant()) {
|
DCHECK_EQ(value->AsIntConstant()->GetValue(), 0);
|
} else if (value->IsPhi()) {
|
DCHECK(value->GetType() == DataType::Type::kInt32 ||
|
value->GetType() == DataType::Type::kReference);
|
} else {
|
value = LoadLocal(reg_number, DataType::Type::kReference);
|
}
|
UpdateLocal(instruction.VRegA(), value);
|
break;
|
}
|
|
case Instruction::RETURN_VOID_NO_BARRIER:
|
case Instruction::RETURN_VOID: {
|
BuildReturn(instruction, DataType::Type::kVoid, dex_pc);
|
break;
|
}
|
|
#define IF_XX(comparison, cond) \
|
case Instruction::IF_##cond: If_22t<comparison>(instruction, dex_pc); break; \
|
case Instruction::IF_##cond##Z: If_21t<comparison>(instruction, dex_pc); break
|
|
IF_XX(HEqual, EQ);
|
IF_XX(HNotEqual, NE);
|
IF_XX(HLessThan, LT);
|
IF_XX(HLessThanOrEqual, LE);
|
IF_XX(HGreaterThan, GT);
|
IF_XX(HGreaterThanOrEqual, GE);
|
|
case Instruction::GOTO:
|
case Instruction::GOTO_16:
|
case Instruction::GOTO_32: {
|
AppendInstruction(new (allocator_) HGoto(dex_pc));
|
current_block_ = nullptr;
|
break;
|
}
|
|
case Instruction::RETURN: {
|
BuildReturn(instruction, return_type_, dex_pc);
|
break;
|
}
|
|
case Instruction::RETURN_OBJECT: {
|
BuildReturn(instruction, return_type_, dex_pc);
|
break;
|
}
|
|
case Instruction::RETURN_WIDE: {
|
BuildReturn(instruction, return_type_, dex_pc);
|
break;
|
}
|
|
case Instruction::INVOKE_DIRECT:
|
case Instruction::INVOKE_INTERFACE:
|
case Instruction::INVOKE_STATIC:
|
case Instruction::INVOKE_SUPER:
|
case Instruction::INVOKE_VIRTUAL:
|
case Instruction::INVOKE_VIRTUAL_QUICK: {
|
uint16_t method_idx;
|
if (instruction.Opcode() == Instruction::INVOKE_VIRTUAL_QUICK) {
|
if (!CanDecodeQuickenedInfo()) {
|
VLOG(compiler) << "Not compiled: Could not decode quickened instruction "
|
<< instruction.Opcode();
|
return false;
|
}
|
method_idx = LookupQuickenedInfo(quicken_index);
|
} else {
|
method_idx = instruction.VRegB_35c();
|
}
|
uint32_t args[5];
|
uint32_t number_of_vreg_arguments = instruction.GetVarArgs(args);
|
VarArgsInstructionOperands operands(args, number_of_vreg_arguments);
|
if (!BuildInvoke(instruction, dex_pc, method_idx, operands)) {
|
return false;
|
}
|
break;
|
}
|
|
case Instruction::INVOKE_DIRECT_RANGE:
|
case Instruction::INVOKE_INTERFACE_RANGE:
|
case Instruction::INVOKE_STATIC_RANGE:
|
case Instruction::INVOKE_SUPER_RANGE:
|
case Instruction::INVOKE_VIRTUAL_RANGE:
|
case Instruction::INVOKE_VIRTUAL_RANGE_QUICK: {
|
uint16_t method_idx;
|
if (instruction.Opcode() == Instruction::INVOKE_VIRTUAL_RANGE_QUICK) {
|
if (!CanDecodeQuickenedInfo()) {
|
VLOG(compiler) << "Not compiled: Could not decode quickened instruction "
|
<< instruction.Opcode();
|
return false;
|
}
|
method_idx = LookupQuickenedInfo(quicken_index);
|
} else {
|
method_idx = instruction.VRegB_3rc();
|
}
|
RangeInstructionOperands operands(instruction.VRegC(), instruction.VRegA_3rc());
|
if (!BuildInvoke(instruction, dex_pc, method_idx, operands)) {
|
return false;
|
}
|
break;
|
}
|
|
case Instruction::INVOKE_POLYMORPHIC: {
|
uint16_t method_idx = instruction.VRegB_45cc();
|
dex::ProtoIndex proto_idx(instruction.VRegH_45cc());
|
uint32_t args[5];
|
uint32_t number_of_vreg_arguments = instruction.GetVarArgs(args);
|
VarArgsInstructionOperands operands(args, number_of_vreg_arguments);
|
return BuildInvokePolymorphic(dex_pc, method_idx, proto_idx, operands);
|
}
|
|
case Instruction::INVOKE_POLYMORPHIC_RANGE: {
|
uint16_t method_idx = instruction.VRegB_4rcc();
|
dex::ProtoIndex proto_idx(instruction.VRegH_4rcc());
|
RangeInstructionOperands operands(instruction.VRegC_4rcc(), instruction.VRegA_4rcc());
|
return BuildInvokePolymorphic(dex_pc, method_idx, proto_idx, operands);
|
}
|
|
case Instruction::INVOKE_CUSTOM: {
|
uint16_t call_site_idx = instruction.VRegB_35c();
|
uint32_t args[5];
|
uint32_t number_of_vreg_arguments = instruction.GetVarArgs(args);
|
VarArgsInstructionOperands operands(args, number_of_vreg_arguments);
|
return BuildInvokeCustom(dex_pc, call_site_idx, operands);
|
}
|
|
case Instruction::INVOKE_CUSTOM_RANGE: {
|
uint16_t call_site_idx = instruction.VRegB_3rc();
|
RangeInstructionOperands operands(instruction.VRegC_3rc(), instruction.VRegA_3rc());
|
return BuildInvokeCustom(dex_pc, call_site_idx, operands);
|
}
|
|
case Instruction::NEG_INT: {
|
Unop_12x<HNeg>(instruction, DataType::Type::kInt32, dex_pc);
|
break;
|
}
|
|
case Instruction::NEG_LONG: {
|
Unop_12x<HNeg>(instruction, DataType::Type::kInt64, dex_pc);
|
break;
|
}
|
|
case Instruction::NEG_FLOAT: {
|
Unop_12x<HNeg>(instruction, DataType::Type::kFloat32, dex_pc);
|
break;
|
}
|
|
case Instruction::NEG_DOUBLE: {
|
Unop_12x<HNeg>(instruction, DataType::Type::kFloat64, dex_pc);
|
break;
|
}
|
|
case Instruction::NOT_INT: {
|
Unop_12x<HNot>(instruction, DataType::Type::kInt32, dex_pc);
|
break;
|
}
|
|
case Instruction::NOT_LONG: {
|
Unop_12x<HNot>(instruction, DataType::Type::kInt64, dex_pc);
|
break;
|
}
|
|
case Instruction::INT_TO_LONG: {
|
Conversion_12x(instruction, DataType::Type::kInt32, DataType::Type::kInt64, dex_pc);
|
break;
|
}
|
|
case Instruction::INT_TO_FLOAT: {
|
Conversion_12x(instruction, DataType::Type::kInt32, DataType::Type::kFloat32, dex_pc);
|
break;
|
}
|
|
case Instruction::INT_TO_DOUBLE: {
|
Conversion_12x(instruction, DataType::Type::kInt32, DataType::Type::kFloat64, dex_pc);
|
break;
|
}
|
|
case Instruction::LONG_TO_INT: {
|
Conversion_12x(instruction, DataType::Type::kInt64, DataType::Type::kInt32, dex_pc);
|
break;
|
}
|
|
case Instruction::LONG_TO_FLOAT: {
|
Conversion_12x(instruction, DataType::Type::kInt64, DataType::Type::kFloat32, dex_pc);
|
break;
|
}
|
|
case Instruction::LONG_TO_DOUBLE: {
|
Conversion_12x(instruction, DataType::Type::kInt64, DataType::Type::kFloat64, dex_pc);
|
break;
|
}
|
|
case Instruction::FLOAT_TO_INT: {
|
Conversion_12x(instruction, DataType::Type::kFloat32, DataType::Type::kInt32, dex_pc);
|
break;
|
}
|
|
case Instruction::FLOAT_TO_LONG: {
|
Conversion_12x(instruction, DataType::Type::kFloat32, DataType::Type::kInt64, dex_pc);
|
break;
|
}
|
|
case Instruction::FLOAT_TO_DOUBLE: {
|
Conversion_12x(instruction, DataType::Type::kFloat32, DataType::Type::kFloat64, dex_pc);
|
break;
|
}
|
|
case Instruction::DOUBLE_TO_INT: {
|
Conversion_12x(instruction, DataType::Type::kFloat64, DataType::Type::kInt32, dex_pc);
|
break;
|
}
|
|
case Instruction::DOUBLE_TO_LONG: {
|
Conversion_12x(instruction, DataType::Type::kFloat64, DataType::Type::kInt64, dex_pc);
|
break;
|
}
|
|
case Instruction::DOUBLE_TO_FLOAT: {
|
Conversion_12x(instruction, DataType::Type::kFloat64, DataType::Type::kFloat32, dex_pc);
|
break;
|
}
|
|
case Instruction::INT_TO_BYTE: {
|
Conversion_12x(instruction, DataType::Type::kInt32, DataType::Type::kInt8, dex_pc);
|
break;
|
}
|
|
case Instruction::INT_TO_SHORT: {
|
Conversion_12x(instruction, DataType::Type::kInt32, DataType::Type::kInt16, dex_pc);
|
break;
|
}
|
|
case Instruction::INT_TO_CHAR: {
|
Conversion_12x(instruction, DataType::Type::kInt32, DataType::Type::kUint16, dex_pc);
|
break;
|
}
|
|
case Instruction::ADD_INT: {
|
Binop_23x<HAdd>(instruction, DataType::Type::kInt32, dex_pc);
|
break;
|
}
|
|
case Instruction::ADD_LONG: {
|
Binop_23x<HAdd>(instruction, DataType::Type::kInt64, dex_pc);
|
break;
|
}
|
|
case Instruction::ADD_DOUBLE: {
|
Binop_23x<HAdd>(instruction, DataType::Type::kFloat64, dex_pc);
|
break;
|
}
|
|
case Instruction::ADD_FLOAT: {
|
Binop_23x<HAdd>(instruction, DataType::Type::kFloat32, dex_pc);
|
break;
|
}
|
|
case Instruction::SUB_INT: {
|
Binop_23x<HSub>(instruction, DataType::Type::kInt32, dex_pc);
|
break;
|
}
|
|
case Instruction::SUB_LONG: {
|
Binop_23x<HSub>(instruction, DataType::Type::kInt64, dex_pc);
|
break;
|
}
|
|
case Instruction::SUB_FLOAT: {
|
Binop_23x<HSub>(instruction, DataType::Type::kFloat32, dex_pc);
|
break;
|
}
|
|
case Instruction::SUB_DOUBLE: {
|
Binop_23x<HSub>(instruction, DataType::Type::kFloat64, dex_pc);
|
break;
|
}
|
|
case Instruction::ADD_INT_2ADDR: {
|
Binop_12x<HAdd>(instruction, DataType::Type::kInt32, dex_pc);
|
break;
|
}
|
|
case Instruction::MUL_INT: {
|
Binop_23x<HMul>(instruction, DataType::Type::kInt32, dex_pc);
|
break;
|
}
|
|
case Instruction::MUL_LONG: {
|
Binop_23x<HMul>(instruction, DataType::Type::kInt64, dex_pc);
|
break;
|
}
|
|
case Instruction::MUL_FLOAT: {
|
Binop_23x<HMul>(instruction, DataType::Type::kFloat32, dex_pc);
|
break;
|
}
|
|
case Instruction::MUL_DOUBLE: {
|
Binop_23x<HMul>(instruction, DataType::Type::kFloat64, dex_pc);
|
break;
|
}
|
|
case Instruction::DIV_INT: {
|
BuildCheckedDivRem(instruction.VRegA(), instruction.VRegB(), instruction.VRegC(),
|
dex_pc, DataType::Type::kInt32, false, true);
|
break;
|
}
|
|
case Instruction::DIV_LONG: {
|
BuildCheckedDivRem(instruction.VRegA(), instruction.VRegB(), instruction.VRegC(),
|
dex_pc, DataType::Type::kInt64, false, true);
|
break;
|
}
|
|
case Instruction::DIV_FLOAT: {
|
Binop_23x<HDiv>(instruction, DataType::Type::kFloat32, dex_pc);
|
break;
|
}
|
|
case Instruction::DIV_DOUBLE: {
|
Binop_23x<HDiv>(instruction, DataType::Type::kFloat64, dex_pc);
|
break;
|
}
|
|
case Instruction::REM_INT: {
|
BuildCheckedDivRem(instruction.VRegA(), instruction.VRegB(), instruction.VRegC(),
|
dex_pc, DataType::Type::kInt32, false, false);
|
break;
|
}
|
|
case Instruction::REM_LONG: {
|
BuildCheckedDivRem(instruction.VRegA(), instruction.VRegB(), instruction.VRegC(),
|
dex_pc, DataType::Type::kInt64, false, false);
|
break;
|
}
|
|
case Instruction::REM_FLOAT: {
|
Binop_23x<HRem>(instruction, DataType::Type::kFloat32, dex_pc);
|
break;
|
}
|
|
case Instruction::REM_DOUBLE: {
|
Binop_23x<HRem>(instruction, DataType::Type::kFloat64, dex_pc);
|
break;
|
}
|
|
case Instruction::AND_INT: {
|
Binop_23x<HAnd>(instruction, DataType::Type::kInt32, dex_pc);
|
break;
|
}
|
|
case Instruction::AND_LONG: {
|
Binop_23x<HAnd>(instruction, DataType::Type::kInt64, dex_pc);
|
break;
|
}
|
|
case Instruction::SHL_INT: {
|
Binop_23x_shift<HShl>(instruction, DataType::Type::kInt32, dex_pc);
|
break;
|
}
|
|
case Instruction::SHL_LONG: {
|
Binop_23x_shift<HShl>(instruction, DataType::Type::kInt64, dex_pc);
|
break;
|
}
|
|
case Instruction::SHR_INT: {
|
Binop_23x_shift<HShr>(instruction, DataType::Type::kInt32, dex_pc);
|
break;
|
}
|
|
case Instruction::SHR_LONG: {
|
Binop_23x_shift<HShr>(instruction, DataType::Type::kInt64, dex_pc);
|
break;
|
}
|
|
case Instruction::USHR_INT: {
|
Binop_23x_shift<HUShr>(instruction, DataType::Type::kInt32, dex_pc);
|
break;
|
}
|
|
case Instruction::USHR_LONG: {
|
Binop_23x_shift<HUShr>(instruction, DataType::Type::kInt64, dex_pc);
|
break;
|
}
|
|
case Instruction::OR_INT: {
|
Binop_23x<HOr>(instruction, DataType::Type::kInt32, dex_pc);
|
break;
|
}
|
|
case Instruction::OR_LONG: {
|
Binop_23x<HOr>(instruction, DataType::Type::kInt64, dex_pc);
|
break;
|
}
|
|
case Instruction::XOR_INT: {
|
Binop_23x<HXor>(instruction, DataType::Type::kInt32, dex_pc);
|
break;
|
}
|
|
case Instruction::XOR_LONG: {
|
Binop_23x<HXor>(instruction, DataType::Type::kInt64, dex_pc);
|
break;
|
}
|
|
case Instruction::ADD_LONG_2ADDR: {
|
Binop_12x<HAdd>(instruction, DataType::Type::kInt64, dex_pc);
|
break;
|
}
|
|
case Instruction::ADD_DOUBLE_2ADDR: {
|
Binop_12x<HAdd>(instruction, DataType::Type::kFloat64, dex_pc);
|
break;
|
}
|
|
case Instruction::ADD_FLOAT_2ADDR: {
|
Binop_12x<HAdd>(instruction, DataType::Type::kFloat32, dex_pc);
|
break;
|
}
|
|
case Instruction::SUB_INT_2ADDR: {
|
Binop_12x<HSub>(instruction, DataType::Type::kInt32, dex_pc);
|
break;
|
}
|
|
case Instruction::SUB_LONG_2ADDR: {
|
Binop_12x<HSub>(instruction, DataType::Type::kInt64, dex_pc);
|
break;
|
}
|
|
case Instruction::SUB_FLOAT_2ADDR: {
|
Binop_12x<HSub>(instruction, DataType::Type::kFloat32, dex_pc);
|
break;
|
}
|
|
case Instruction::SUB_DOUBLE_2ADDR: {
|
Binop_12x<HSub>(instruction, DataType::Type::kFloat64, dex_pc);
|
break;
|
}
|
|
case Instruction::MUL_INT_2ADDR: {
|
Binop_12x<HMul>(instruction, DataType::Type::kInt32, dex_pc);
|
break;
|
}
|
|
case Instruction::MUL_LONG_2ADDR: {
|
Binop_12x<HMul>(instruction, DataType::Type::kInt64, dex_pc);
|
break;
|
}
|
|
case Instruction::MUL_FLOAT_2ADDR: {
|
Binop_12x<HMul>(instruction, DataType::Type::kFloat32, dex_pc);
|
break;
|
}
|
|
case Instruction::MUL_DOUBLE_2ADDR: {
|
Binop_12x<HMul>(instruction, DataType::Type::kFloat64, dex_pc);
|
break;
|
}
|
|
case Instruction::DIV_INT_2ADDR: {
|
BuildCheckedDivRem(instruction.VRegA(), instruction.VRegA(), instruction.VRegB(),
|
dex_pc, DataType::Type::kInt32, false, true);
|
break;
|
}
|
|
case Instruction::DIV_LONG_2ADDR: {
|
BuildCheckedDivRem(instruction.VRegA(), instruction.VRegA(), instruction.VRegB(),
|
dex_pc, DataType::Type::kInt64, false, true);
|
break;
|
}
|
|
case Instruction::REM_INT_2ADDR: {
|
BuildCheckedDivRem(instruction.VRegA(), instruction.VRegA(), instruction.VRegB(),
|
dex_pc, DataType::Type::kInt32, false, false);
|
break;
|
}
|
|
case Instruction::REM_LONG_2ADDR: {
|
BuildCheckedDivRem(instruction.VRegA(), instruction.VRegA(), instruction.VRegB(),
|
dex_pc, DataType::Type::kInt64, false, false);
|
break;
|
}
|
|
case Instruction::REM_FLOAT_2ADDR: {
|
Binop_12x<HRem>(instruction, DataType::Type::kFloat32, dex_pc);
|
break;
|
}
|
|
case Instruction::REM_DOUBLE_2ADDR: {
|
Binop_12x<HRem>(instruction, DataType::Type::kFloat64, dex_pc);
|
break;
|
}
|
|
case Instruction::SHL_INT_2ADDR: {
|
Binop_12x_shift<HShl>(instruction, DataType::Type::kInt32, dex_pc);
|
break;
|
}
|
|
case Instruction::SHL_LONG_2ADDR: {
|
Binop_12x_shift<HShl>(instruction, DataType::Type::kInt64, dex_pc);
|
break;
|
}
|
|
case Instruction::SHR_INT_2ADDR: {
|
Binop_12x_shift<HShr>(instruction, DataType::Type::kInt32, dex_pc);
|
break;
|
}
|
|
case Instruction::SHR_LONG_2ADDR: {
|
Binop_12x_shift<HShr>(instruction, DataType::Type::kInt64, dex_pc);
|
break;
|
}
|
|
case Instruction::USHR_INT_2ADDR: {
|
Binop_12x_shift<HUShr>(instruction, DataType::Type::kInt32, dex_pc);
|
break;
|
}
|
|
case Instruction::USHR_LONG_2ADDR: {
|
Binop_12x_shift<HUShr>(instruction, DataType::Type::kInt64, dex_pc);
|
break;
|
}
|
|
case Instruction::DIV_FLOAT_2ADDR: {
|
Binop_12x<HDiv>(instruction, DataType::Type::kFloat32, dex_pc);
|
break;
|
}
|
|
case Instruction::DIV_DOUBLE_2ADDR: {
|
Binop_12x<HDiv>(instruction, DataType::Type::kFloat64, dex_pc);
|
break;
|
}
|
|
case Instruction::AND_INT_2ADDR: {
|
Binop_12x<HAnd>(instruction, DataType::Type::kInt32, dex_pc);
|
break;
|
}
|
|
case Instruction::AND_LONG_2ADDR: {
|
Binop_12x<HAnd>(instruction, DataType::Type::kInt64, dex_pc);
|
break;
|
}
|
|
case Instruction::OR_INT_2ADDR: {
|
Binop_12x<HOr>(instruction, DataType::Type::kInt32, dex_pc);
|
break;
|
}
|
|
case Instruction::OR_LONG_2ADDR: {
|
Binop_12x<HOr>(instruction, DataType::Type::kInt64, dex_pc);
|
break;
|
}
|
|
case Instruction::XOR_INT_2ADDR: {
|
Binop_12x<HXor>(instruction, DataType::Type::kInt32, dex_pc);
|
break;
|
}
|
|
case Instruction::XOR_LONG_2ADDR: {
|
Binop_12x<HXor>(instruction, DataType::Type::kInt64, dex_pc);
|
break;
|
}
|
|
case Instruction::ADD_INT_LIT16: {
|
Binop_22s<HAdd>(instruction, false, dex_pc);
|
break;
|
}
|
|
case Instruction::AND_INT_LIT16: {
|
Binop_22s<HAnd>(instruction, false, dex_pc);
|
break;
|
}
|
|
case Instruction::OR_INT_LIT16: {
|
Binop_22s<HOr>(instruction, false, dex_pc);
|
break;
|
}
|
|
case Instruction::XOR_INT_LIT16: {
|
Binop_22s<HXor>(instruction, false, dex_pc);
|
break;
|
}
|
|
case Instruction::RSUB_INT: {
|
Binop_22s<HSub>(instruction, true, dex_pc);
|
break;
|
}
|
|
case Instruction::MUL_INT_LIT16: {
|
Binop_22s<HMul>(instruction, false, dex_pc);
|
break;
|
}
|
|
case Instruction::ADD_INT_LIT8: {
|
Binop_22b<HAdd>(instruction, false, dex_pc);
|
break;
|
}
|
|
case Instruction::AND_INT_LIT8: {
|
Binop_22b<HAnd>(instruction, false, dex_pc);
|
break;
|
}
|
|
case Instruction::OR_INT_LIT8: {
|
Binop_22b<HOr>(instruction, false, dex_pc);
|
break;
|
}
|
|
case Instruction::XOR_INT_LIT8: {
|
Binop_22b<HXor>(instruction, false, dex_pc);
|
break;
|
}
|
|
case Instruction::RSUB_INT_LIT8: {
|
Binop_22b<HSub>(instruction, true, dex_pc);
|
break;
|
}
|
|
case Instruction::MUL_INT_LIT8: {
|
Binop_22b<HMul>(instruction, false, dex_pc);
|
break;
|
}
|
|
case Instruction::DIV_INT_LIT16:
|
case Instruction::DIV_INT_LIT8: {
|
BuildCheckedDivRem(instruction.VRegA(), instruction.VRegB(), instruction.VRegC(),
|
dex_pc, DataType::Type::kInt32, true, true);
|
break;
|
}
|
|
case Instruction::REM_INT_LIT16:
|
case Instruction::REM_INT_LIT8: {
|
BuildCheckedDivRem(instruction.VRegA(), instruction.VRegB(), instruction.VRegC(),
|
dex_pc, DataType::Type::kInt32, true, false);
|
break;
|
}
|
|
case Instruction::SHL_INT_LIT8: {
|
Binop_22b<HShl>(instruction, false, dex_pc);
|
break;
|
}
|
|
case Instruction::SHR_INT_LIT8: {
|
Binop_22b<HShr>(instruction, false, dex_pc);
|
break;
|
}
|
|
case Instruction::USHR_INT_LIT8: {
|
Binop_22b<HUShr>(instruction, false, dex_pc);
|
break;
|
}
|
|
case Instruction::NEW_INSTANCE: {
|
HNewInstance* new_instance =
|
BuildNewInstance(dex::TypeIndex(instruction.VRegB_21c()), dex_pc);
|
DCHECK(new_instance != nullptr);
|
|
UpdateLocal(instruction.VRegA(), current_block_->GetLastInstruction());
|
BuildConstructorFenceForAllocation(new_instance);
|
break;
|
}
|
|
case Instruction::NEW_ARRAY: {
|
dex::TypeIndex type_index(instruction.VRegC_22c());
|
HInstruction* length = LoadLocal(instruction.VRegB_22c(), DataType::Type::kInt32);
|
HNewArray* new_array = BuildNewArray(dex_pc, type_index, length);
|
|
UpdateLocal(instruction.VRegA_22c(), current_block_->GetLastInstruction());
|
BuildConstructorFenceForAllocation(new_array);
|
break;
|
}
|
|
case Instruction::FILLED_NEW_ARRAY: {
|
dex::TypeIndex type_index(instruction.VRegB_35c());
|
uint32_t args[5];
|
uint32_t number_of_vreg_arguments = instruction.GetVarArgs(args);
|
VarArgsInstructionOperands operands(args, number_of_vreg_arguments);
|
HNewArray* new_array = BuildFilledNewArray(dex_pc, type_index, operands);
|
BuildConstructorFenceForAllocation(new_array);
|
break;
|
}
|
|
case Instruction::FILLED_NEW_ARRAY_RANGE: {
|
dex::TypeIndex type_index(instruction.VRegB_3rc());
|
RangeInstructionOperands operands(instruction.VRegC_3rc(), instruction.VRegA_3rc());
|
HNewArray* new_array = BuildFilledNewArray(dex_pc, type_index, operands);
|
BuildConstructorFenceForAllocation(new_array);
|
break;
|
}
|
|
case Instruction::FILL_ARRAY_DATA: {
|
BuildFillArrayData(instruction, dex_pc);
|
break;
|
}
|
|
case Instruction::MOVE_RESULT:
|
case Instruction::MOVE_RESULT_WIDE:
|
case Instruction::MOVE_RESULT_OBJECT: {
|
DCHECK(latest_result_ != nullptr);
|
UpdateLocal(instruction.VRegA(), latest_result_);
|
latest_result_ = nullptr;
|
break;
|
}
|
|
case Instruction::CMP_LONG: {
|
Binop_23x_cmp(instruction, DataType::Type::kInt64, ComparisonBias::kNoBias, dex_pc);
|
break;
|
}
|
|
case Instruction::CMPG_FLOAT: {
|
Binop_23x_cmp(instruction, DataType::Type::kFloat32, ComparisonBias::kGtBias, dex_pc);
|
break;
|
}
|
|
case Instruction::CMPG_DOUBLE: {
|
Binop_23x_cmp(instruction, DataType::Type::kFloat64, ComparisonBias::kGtBias, dex_pc);
|
break;
|
}
|
|
case Instruction::CMPL_FLOAT: {
|
Binop_23x_cmp(instruction, DataType::Type::kFloat32, ComparisonBias::kLtBias, dex_pc);
|
break;
|
}
|
|
case Instruction::CMPL_DOUBLE: {
|
Binop_23x_cmp(instruction, DataType::Type::kFloat64, ComparisonBias::kLtBias, dex_pc);
|
break;
|
}
|
|
case Instruction::NOP:
|
break;
|
|
case Instruction::IGET:
|
case Instruction::IGET_QUICK:
|
case Instruction::IGET_WIDE:
|
case Instruction::IGET_WIDE_QUICK:
|
case Instruction::IGET_OBJECT:
|
case Instruction::IGET_OBJECT_QUICK:
|
case Instruction::IGET_BOOLEAN:
|
case Instruction::IGET_BOOLEAN_QUICK:
|
case Instruction::IGET_BYTE:
|
case Instruction::IGET_BYTE_QUICK:
|
case Instruction::IGET_CHAR:
|
case Instruction::IGET_CHAR_QUICK:
|
case Instruction::IGET_SHORT:
|
case Instruction::IGET_SHORT_QUICK: {
|
if (!BuildInstanceFieldAccess(instruction, dex_pc, /* is_put= */ false, quicken_index)) {
|
return false;
|
}
|
break;
|
}
|
|
case Instruction::IPUT:
|
case Instruction::IPUT_QUICK:
|
case Instruction::IPUT_WIDE:
|
case Instruction::IPUT_WIDE_QUICK:
|
case Instruction::IPUT_OBJECT:
|
case Instruction::IPUT_OBJECT_QUICK:
|
case Instruction::IPUT_BOOLEAN:
|
case Instruction::IPUT_BOOLEAN_QUICK:
|
case Instruction::IPUT_BYTE:
|
case Instruction::IPUT_BYTE_QUICK:
|
case Instruction::IPUT_CHAR:
|
case Instruction::IPUT_CHAR_QUICK:
|
case Instruction::IPUT_SHORT:
|
case Instruction::IPUT_SHORT_QUICK: {
|
if (!BuildInstanceFieldAccess(instruction, dex_pc, /* is_put= */ true, quicken_index)) {
|
return false;
|
}
|
break;
|
}
|
|
case Instruction::SGET:
|
case Instruction::SGET_WIDE:
|
case Instruction::SGET_OBJECT:
|
case Instruction::SGET_BOOLEAN:
|
case Instruction::SGET_BYTE:
|
case Instruction::SGET_CHAR:
|
case Instruction::SGET_SHORT: {
|
BuildStaticFieldAccess(instruction, dex_pc, /* is_put= */ false);
|
break;
|
}
|
|
case Instruction::SPUT:
|
case Instruction::SPUT_WIDE:
|
case Instruction::SPUT_OBJECT:
|
case Instruction::SPUT_BOOLEAN:
|
case Instruction::SPUT_BYTE:
|
case Instruction::SPUT_CHAR:
|
case Instruction::SPUT_SHORT: {
|
BuildStaticFieldAccess(instruction, dex_pc, /* is_put= */ true);
|
break;
|
}
|
|
#define ARRAY_XX(kind, anticipated_type) \
|
case Instruction::AGET##kind: { \
|
BuildArrayAccess(instruction, dex_pc, false, anticipated_type); \
|
break; \
|
} \
|
case Instruction::APUT##kind: { \
|
BuildArrayAccess(instruction, dex_pc, true, anticipated_type); \
|
break; \
|
}
|
|
ARRAY_XX(, DataType::Type::kInt32);
|
ARRAY_XX(_WIDE, DataType::Type::kInt64);
|
ARRAY_XX(_OBJECT, DataType::Type::kReference);
|
ARRAY_XX(_BOOLEAN, DataType::Type::kBool);
|
ARRAY_XX(_BYTE, DataType::Type::kInt8);
|
ARRAY_XX(_CHAR, DataType::Type::kUint16);
|
ARRAY_XX(_SHORT, DataType::Type::kInt16);
|
|
case Instruction::ARRAY_LENGTH: {
|
HInstruction* object = LoadNullCheckedLocal(instruction.VRegB_12x(), dex_pc);
|
AppendInstruction(new (allocator_) HArrayLength(object, dex_pc));
|
UpdateLocal(instruction.VRegA_12x(), current_block_->GetLastInstruction());
|
break;
|
}
|
|
case Instruction::CONST_STRING: {
|
dex::StringIndex string_index(instruction.VRegB_21c());
|
BuildLoadString(string_index, dex_pc);
|
UpdateLocal(instruction.VRegA_21c(), current_block_->GetLastInstruction());
|
break;
|
}
|
|
case Instruction::CONST_STRING_JUMBO: {
|
dex::StringIndex string_index(instruction.VRegB_31c());
|
BuildLoadString(string_index, dex_pc);
|
UpdateLocal(instruction.VRegA_31c(), current_block_->GetLastInstruction());
|
break;
|
}
|
|
case Instruction::CONST_CLASS: {
|
dex::TypeIndex type_index(instruction.VRegB_21c());
|
BuildLoadClass(type_index, dex_pc);
|
UpdateLocal(instruction.VRegA_21c(), current_block_->GetLastInstruction());
|
break;
|
}
|
|
case Instruction::CONST_METHOD_HANDLE: {
|
uint16_t method_handle_idx = instruction.VRegB_21c();
|
BuildLoadMethodHandle(method_handle_idx, dex_pc);
|
UpdateLocal(instruction.VRegA_21c(), current_block_->GetLastInstruction());
|
break;
|
}
|
|
case Instruction::CONST_METHOD_TYPE: {
|
dex::ProtoIndex proto_idx(instruction.VRegB_21c());
|
BuildLoadMethodType(proto_idx, dex_pc);
|
UpdateLocal(instruction.VRegA_21c(), current_block_->GetLastInstruction());
|
break;
|
}
|
|
case Instruction::MOVE_EXCEPTION: {
|
AppendInstruction(new (allocator_) HLoadException(dex_pc));
|
UpdateLocal(instruction.VRegA_11x(), current_block_->GetLastInstruction());
|
AppendInstruction(new (allocator_) HClearException(dex_pc));
|
break;
|
}
|
|
case Instruction::THROW: {
|
HInstruction* exception = LoadLocal(instruction.VRegA_11x(), DataType::Type::kReference);
|
AppendInstruction(new (allocator_) HThrow(exception, dex_pc));
|
// We finished building this block. Set the current block to null to avoid
|
// adding dead instructions to it.
|
current_block_ = nullptr;
|
break;
|
}
|
|
case Instruction::INSTANCE_OF: {
|
uint8_t destination = instruction.VRegA_22c();
|
uint8_t reference = instruction.VRegB_22c();
|
dex::TypeIndex type_index(instruction.VRegC_22c());
|
BuildTypeCheck(instruction, destination, reference, type_index, dex_pc);
|
break;
|
}
|
|
case Instruction::CHECK_CAST: {
|
uint8_t reference = instruction.VRegA_21c();
|
dex::TypeIndex type_index(instruction.VRegB_21c());
|
BuildTypeCheck(instruction, -1, reference, type_index, dex_pc);
|
break;
|
}
|
|
case Instruction::MONITOR_ENTER: {
|
AppendInstruction(new (allocator_) HMonitorOperation(
|
LoadLocal(instruction.VRegA_11x(), DataType::Type::kReference),
|
HMonitorOperation::OperationKind::kEnter,
|
dex_pc));
|
break;
|
}
|
|
case Instruction::MONITOR_EXIT: {
|
AppendInstruction(new (allocator_) HMonitorOperation(
|
LoadLocal(instruction.VRegA_11x(), DataType::Type::kReference),
|
HMonitorOperation::OperationKind::kExit,
|
dex_pc));
|
break;
|
}
|
|
case Instruction::SPARSE_SWITCH:
|
case Instruction::PACKED_SWITCH: {
|
BuildSwitch(instruction, dex_pc);
|
break;
|
}
|
|
case Instruction::UNUSED_3E:
|
case Instruction::UNUSED_3F:
|
case Instruction::UNUSED_40:
|
case Instruction::UNUSED_41:
|
case Instruction::UNUSED_42:
|
case Instruction::UNUSED_43:
|
case Instruction::UNUSED_79:
|
case Instruction::UNUSED_7A:
|
case Instruction::UNUSED_F3:
|
case Instruction::UNUSED_F4:
|
case Instruction::UNUSED_F5:
|
case Instruction::UNUSED_F6:
|
case Instruction::UNUSED_F7:
|
case Instruction::UNUSED_F8:
|
case Instruction::UNUSED_F9: {
|
VLOG(compiler) << "Did not compile "
|
<< dex_file_->PrettyMethod(dex_compilation_unit_->GetDexMethodIndex())
|
<< " because of unhandled instruction "
|
<< instruction.Name();
|
MaybeRecordStat(compilation_stats_,
|
MethodCompilationStat::kNotCompiledUnhandledInstruction);
|
return false;
|
}
|
}
|
return true;
|
} // NOLINT(readability/fn_size)
|
|
ObjPtr<mirror::Class> HInstructionBuilder::LookupResolvedType(
|
dex::TypeIndex type_index,
|
const DexCompilationUnit& compilation_unit) const {
|
return compilation_unit.GetClassLinker()->LookupResolvedType(
|
type_index, compilation_unit.GetDexCache().Get(), compilation_unit.GetClassLoader().Get());
|
}
|
|
ObjPtr<mirror::Class> HInstructionBuilder::LookupReferrerClass() const {
|
// TODO: Cache the result in a Handle<mirror::Class>.
|
const dex::MethodId& method_id =
|
dex_compilation_unit_->GetDexFile()->GetMethodId(dex_compilation_unit_->GetDexMethodIndex());
|
return LookupResolvedType(method_id.class_idx_, *dex_compilation_unit_);
|
}
|
|
} // namespace art
|
