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* 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
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* See the License for the specific language governing permissions and
* limitations under the License.
#include <ostream>
#include <string>
#include <vector>
#include "base/macros.h"
#include "compiler_filter.h"
#include "globals.h"
#include "utils.h"
namespace art {
class CompilerOptions FINAL {
// Guide heuristics to determine whether to compile method if profile data not available.
static const size_t kDefaultHugeMethodThreshold = 10000;
static const size_t kDefaultLargeMethodThreshold = 600;
static const size_t kDefaultSmallMethodThreshold = 60;
static const size_t kDefaultTinyMethodThreshold = 20;
static const size_t kDefaultNumDexMethodsThreshold = 900;
static constexpr double kDefaultTopKProfileThreshold = 90.0;
static const bool kDefaultGenerateDebugInfo = false;
static const bool kDefaultGenerateMiniDebugInfo = false;
static const bool kDefaultIncludePatchInformation = false;
static const size_t kDefaultInlineDepthLimit = 3;
static const size_t kDefaultInlineMaxCodeUnits = 32;
static constexpr size_t kUnsetInlineDepthLimit = -1;
static constexpr size_t kUnsetInlineMaxCodeUnits = -1;
// Default inlining settings when the space filter is used.
static constexpr size_t kSpaceFilterInlineDepthLimit = 3;
static constexpr size_t kSpaceFilterInlineMaxCodeUnits = 10;
CompilerOptions(CompilerFilter::Filter compiler_filter,
size_t huge_method_threshold,
size_t large_method_threshold,
size_t small_method_threshold,
size_t tiny_method_threshold,
size_t num_dex_methods_threshold,
size_t inline_depth_limit,
size_t inline_max_code_units,
const std::vector<const DexFile*>* no_inline_from,
bool include_patch_information,
double top_k_profile_threshold,
bool debuggable,
bool generate_debug_info,
bool implicit_null_checks,
bool implicit_so_checks,
bool implicit_suspend_checks,
bool compile_pic,
const std::vector<std::string>* verbose_methods,
std::ostream* init_failure_output,
bool abort_on_hard_verifier_failure,
const std::string& dump_cfg_file_name,
bool dump_cfg_append,
bool force_determinism);
CompilerFilter::Filter GetCompilerFilter() const {
return compiler_filter_;
void SetCompilerFilter(CompilerFilter::Filter compiler_filter) {
compiler_filter_ = compiler_filter;
bool VerifyAtRuntime() const {
return compiler_filter_ == CompilerFilter::kVerifyAtRuntime;
bool IsBytecodeCompilationEnabled() const {
return CompilerFilter::IsBytecodeCompilationEnabled(compiler_filter_);
bool IsJniCompilationEnabled() const {
return CompilerFilter::IsJniCompilationEnabled(compiler_filter_);
bool IsVerificationEnabled() const {
return CompilerFilter::IsVerificationEnabled(compiler_filter_);
bool NeverVerify() const {
return compiler_filter_ == CompilerFilter::kVerifyNone;
bool VerifyOnlyProfile() const {
return compiler_filter_ == CompilerFilter::kVerifyProfile;
size_t GetHugeMethodThreshold() const {
return huge_method_threshold_;
size_t GetLargeMethodThreshold() const {
return large_method_threshold_;
size_t GetSmallMethodThreshold() const {
return small_method_threshold_;
size_t GetTinyMethodThreshold() const {
return tiny_method_threshold_;
bool IsHugeMethod(size_t num_dalvik_instructions) const {
return num_dalvik_instructions > huge_method_threshold_;
bool IsLargeMethod(size_t num_dalvik_instructions) const {
return num_dalvik_instructions > large_method_threshold_;
bool IsSmallMethod(size_t num_dalvik_instructions) const {
return num_dalvik_instructions > small_method_threshold_;
bool IsTinyMethod(size_t num_dalvik_instructions) const {
return num_dalvik_instructions > tiny_method_threshold_;
size_t GetNumDexMethodsThreshold() const {
return num_dex_methods_threshold_;
size_t GetInlineDepthLimit() const {
return inline_depth_limit_;
void SetInlineDepthLimit(size_t limit) {
inline_depth_limit_ = limit;
size_t GetInlineMaxCodeUnits() const {
return inline_max_code_units_;
void SetInlineMaxCodeUnits(size_t units) {
inline_max_code_units_ = units;
double GetTopKProfileThreshold() const {
return top_k_profile_threshold_;
bool GetDebuggable() const {
return debuggable_;
bool GetNativeDebuggable() const {
return GetDebuggable() && GetGenerateDebugInfo();
// This flag controls whether the compiler collects debugging information.
// The other flags control how the information is written to disk.
bool GenerateAnyDebugInfo() const {
return GetGenerateDebugInfo() || GetGenerateMiniDebugInfo();
bool GetGenerateDebugInfo() const {
return generate_debug_info_;
bool GetGenerateMiniDebugInfo() const {
return generate_mini_debug_info_;
bool GetImplicitNullChecks() const {
return implicit_null_checks_;
bool GetImplicitStackOverflowChecks() const {
return implicit_so_checks_;
bool GetImplicitSuspendChecks() const {
return implicit_suspend_checks_;
bool GetIncludePatchInformation() const {
return include_patch_information_;
// Should the code be compiled as position independent?
bool GetCompilePic() const {
return compile_pic_;
bool HasVerboseMethods() const {
return verbose_methods_ != nullptr && !verbose_methods_->empty();
bool IsVerboseMethod(const std::string& pretty_method) const {
for (const std::string& cur_method : *verbose_methods_) {
if (pretty_method.find(cur_method) != std::string::npos) {
return true;
return false;
std::ostream* GetInitFailureOutput() const {
return init_failure_output_.get();
bool AbortOnHardVerifierFailure() const {
return abort_on_hard_verifier_failure_;
const std::vector<const DexFile*>* GetNoInlineFromDexFile() const {
return no_inline_from_;
bool ParseCompilerOption(const StringPiece& option, UsageFn Usage);
const std::string& GetDumpCfgFileName() const {
return dump_cfg_file_name_;
bool GetDumpCfgAppend() const {
return dump_cfg_append_;
bool IsForceDeterminism() const {
return force_determinism_;
void ParseDumpInitFailures(const StringPiece& option, UsageFn Usage);
void ParseDumpCfgPasses(const StringPiece& option, UsageFn Usage);
void ParseInlineMaxCodeUnits(const StringPiece& option, UsageFn Usage);
void ParseInlineDepthLimit(const StringPiece& option, UsageFn Usage);
void ParseNumDexMethods(const StringPiece& option, UsageFn Usage);
void ParseTinyMethodMax(const StringPiece& option, UsageFn Usage);
void ParseSmallMethodMax(const StringPiece& option, UsageFn Usage);
void ParseLargeMethodMax(const StringPiece& option, UsageFn Usage);
void ParseHugeMethodMax(const StringPiece& option, UsageFn Usage);
CompilerFilter::Filter compiler_filter_;
size_t huge_method_threshold_;
size_t large_method_threshold_;
size_t small_method_threshold_;
size_t tiny_method_threshold_;
size_t num_dex_methods_threshold_;
size_t inline_depth_limit_;
size_t inline_max_code_units_;
// Dex files from which we should not inline code.
// This is usually a very short list (i.e. a single dex file), so we
// prefer vector<> over a lookup-oriented container, such as set<>.
const std::vector<const DexFile*>* no_inline_from_;
bool include_patch_information_;
// When using a profile file only the top K% of the profiled samples will be compiled.
double top_k_profile_threshold_;
bool debuggable_;
bool generate_debug_info_;
bool generate_mini_debug_info_;
bool implicit_null_checks_;
bool implicit_so_checks_;
bool implicit_suspend_checks_;
bool compile_pic_;
// Vector of methods to have verbose output enabled for.
const std::vector<std::string>* verbose_methods_;
// Abort compilation with an error if we find a class that fails verification with a hard
// failure.
bool abort_on_hard_verifier_failure_;
// Log initialization of initialization failures to this stream if not null.
std::unique_ptr<std::ostream> init_failure_output_;
std::string dump_cfg_file_name_;
bool dump_cfg_append_;
// Whether the compiler should trade performance for determinism to guarantee exactly reproducable
// outcomes.
bool force_determinism_;
friend class Dex2Oat;
} // namespace art