// Copyright 2018 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef V8_UNOPTIMIZED_COMPILATION_INFO_H_
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#define V8_UNOPTIMIZED_COMPILATION_INFO_H_
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#include <memory>
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#include "src/feedback-vector.h"
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#include "src/globals.h"
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#include "src/handles.h"
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#include "src/objects.h"
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#include "src/source-position-table.h"
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#include "src/utils.h"
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namespace v8 {
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namespace internal {
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class CoverageInfo;
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class DeclarationScope;
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class FunctionLiteral;
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class Isolate;
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class ParseInfo;
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class SourceRangeMap;
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class Zone;
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// UnoptimizedCompilationInfo encapsulates the information needed to compile
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// unoptimized code for a given function, and the results of the compilation.
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class V8_EXPORT_PRIVATE UnoptimizedCompilationInfo final {
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public:
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UnoptimizedCompilationInfo(Zone* zone, ParseInfo* parse_info,
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FunctionLiteral* literal);
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Zone* zone() { return zone_; }
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// Compilation flag accessors.
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void MarkAsEval() { SetFlag(kIsEval); }
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bool is_eval() const { return GetFlag(kIsEval); }
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void MarkAsNative() { SetFlag(kIsNative); }
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bool is_native() const { return GetFlag(kIsNative); }
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void MarkAsCollectTypeProfile() { SetFlag(kCollectTypeProfile); }
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bool collect_type_profile() const { return GetFlag(kCollectTypeProfile); }
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// Accessors for the input data of the function being compiled.
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FunctionLiteral* literal() const { return literal_; }
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void set_literal(FunctionLiteral* literal) {
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DCHECK_NOT_NULL(literal);
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literal_ = literal;
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}
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DeclarationScope* scope() const;
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int num_parameters() const;
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int num_parameters_including_this() const;
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// Accessors for optional compilation features.
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SourcePositionTableBuilder::RecordingMode SourcePositionRecordingMode() const;
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bool has_source_range_map() const { return source_range_map_ != nullptr; }
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SourceRangeMap* source_range_map() const { return source_range_map_; }
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void set_source_range_map(SourceRangeMap* source_range_map) {
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source_range_map_ = source_range_map;
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}
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bool has_coverage_info() const { return !coverage_info_.is_null(); }
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Handle<CoverageInfo> coverage_info() const { return coverage_info_; }
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void set_coverage_info(Handle<CoverageInfo> coverage_info) {
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coverage_info_ = coverage_info;
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}
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// Accessors for the output of compilation.
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bool has_bytecode_array() const { return !bytecode_array_.is_null(); }
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Handle<BytecodeArray> bytecode_array() const { return bytecode_array_; }
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void SetBytecodeArray(Handle<BytecodeArray> bytecode_array) {
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bytecode_array_ = bytecode_array;
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}
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bool has_asm_wasm_data() const { return !asm_wasm_data_.is_null(); }
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Handle<FixedArray> asm_wasm_data() const { return asm_wasm_data_; }
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void SetAsmWasmData(Handle<FixedArray> asm_wasm_data) {
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asm_wasm_data_ = asm_wasm_data;
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}
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FeedbackVectorSpec* feedback_vector_spec() { return &feedback_vector_spec_; }
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private:
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// Various configuration flags for a compilation, as well as some properties
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// of the compiled code produced by a compilation.
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enum Flag {
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kIsEval = 1 << 0,
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kIsNative = 1 << 1,
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kCollectTypeProfile = 1 << 2,
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kUntrustedCodeMitigations = 1 << 3,
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};
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void SetFlag(Flag flag) { flags_ |= flag; }
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bool GetFlag(Flag flag) const { return (flags_ & flag) != 0; }
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// Compilation flags.
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unsigned flags_;
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// The zone from which the compilation pipeline working on this
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// OptimizedCompilationInfo allocates.
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Zone* zone_;
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// The root AST node of the function literal being compiled.
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FunctionLiteral* literal_;
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// Used when block coverage is enabled.
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SourceRangeMap* source_range_map_;
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// Encapsulates coverage information gathered by the bytecode generator.
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// Needs to be stored on the shared function info once compilation completes.
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Handle<CoverageInfo> coverage_info_;
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// Holds the bytecode array generated by the interpreter.
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Handle<BytecodeArray> bytecode_array_;
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// Holds the asm_wasm array generated by the asmjs compiler.
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Handle<FixedArray> asm_wasm_data_;
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// Holds the feedback vector spec generated during compilation
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FeedbackVectorSpec feedback_vector_spec_;
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};
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} // namespace internal
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} // namespace v8
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#endif // V8_UNOPTIMIZED_COMPILATION_INFO_H_
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