upload android base code part3

android/art/compiler/optimizing/builder.cc

@@ -0,0 +1,108 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "builder.h"
+
+#include "art_field-inl.h"
+#include "base/arena_bit_vector.h"
+#include "base/bit_vector-inl.h"
+#include "base/logging.h"
+#include "dex/verified_method.h"
+#include "driver/compiler_options.h"
+#include "mirror/class_loader.h"
+#include "mirror/dex_cache.h"
+#include "nodes.h"
+#include "primitive.h"
+#include "thread.h"
+#include "utils/dex_cache_arrays_layout-inl.h"
+
+namespace art {
+
+void HGraphBuilder::MaybeRecordStat(MethodCompilationStat compilation_stat) {
+  if (compilation_stats_ != nullptr) {
+    compilation_stats_->RecordStat(compilation_stat);
+  }
+}
+
+bool HGraphBuilder::SkipCompilation(size_t number_of_branches) {
+  if (compiler_driver_ == nullptr) {
+    // Note that the compiler driver is null when unit testing.
+    return false;
+  }
+
+  const CompilerOptions& compiler_options = compiler_driver_->GetCompilerOptions();
+  CompilerFilter::Filter compiler_filter = compiler_options.GetCompilerFilter();
+  if (compiler_filter == CompilerFilter::kEverything) {
+    return false;
+  }
+
+  if (compiler_options.IsHugeMethod(code_item_.insns_size_in_code_units_)) {
+    VLOG(compiler) << "Skip compilation of huge method "
+                   << dex_file_->PrettyMethod(dex_compilation_unit_->GetDexMethodIndex())
+                   << ": " << code_item_.insns_size_in_code_units_ << " code units";
+    MaybeRecordStat(MethodCompilationStat::kNotCompiledHugeMethod);
+    return true;
+  }
+
+  // If it's large and contains no branches, it's likely to be machine generated initialization.
+  if (compiler_options.IsLargeMethod(code_item_.insns_size_in_code_units_)
+      && (number_of_branches == 0)) {
+    VLOG(compiler) << "Skip compilation of large method with no branch "
+                   << dex_file_->PrettyMethod(dex_compilation_unit_->GetDexMethodIndex())
+                   << ": " << code_item_.insns_size_in_code_units_ << " code units";
+    MaybeRecordStat(MethodCompilationStat::kNotCompiledLargeMethodNoBranches);
+    return true;
+  }
+
+  return false;
+}
+
+GraphAnalysisResult HGraphBuilder::BuildGraph() {
+  DCHECK(graph_->GetBlocks().empty());
+
+  graph_->SetNumberOfVRegs(code_item_.registers_size_);
+  graph_->SetNumberOfInVRegs(code_item_.ins_size_);
+  graph_->SetMaximumNumberOfOutVRegs(code_item_.outs_size_);
+  graph_->SetHasTryCatch(code_item_.tries_size_ != 0);
+
+  // 1) Create basic blocks and link them together. Basic blocks are left
+  //    unpopulated with the exception of synthetic blocks, e.g. HTryBoundaries.
+  if (!block_builder_.Build()) {
+    return kAnalysisInvalidBytecode;
+  }
+
+  // 2) Decide whether to skip this method based on its code size and number
+  //    of branches.
+  if (SkipCompilation(block_builder_.GetNumberOfBranches())) {
+    return kAnalysisSkipped;
+  }
+
+  // 3) Build the dominator tree and fill in loop and try/catch metadata.
+  GraphAnalysisResult result = graph_->BuildDominatorTree();
+  if (result != kAnalysisSuccess) {
+    return result;
+  }
+
+  // 4) Populate basic blocks with instructions.
+  if (!instruction_builder_.Build()) {
+    return kAnalysisInvalidBytecode;
+  }
+
+  // 5) Type the graph and eliminate dead/redundant phis.
+  return ssa_builder_.BuildSsa();
+}
+
+}  // namespace art