Line data    Source code

       1             : // Copyright 2016 the V8 project authors. All rights reserved.
       2             : // Use of this source code is governed by a BSD-style license that can be
       3             : // found in the LICENSE file.
       4             : 
       5             : #include "src/interpreter/bytecode-flags.h"
       6             : 
       7             : #include "src/ast/ast-value-factory.h"
       8             : #include "src/ast/ast.h"
       9             : #include "src/builtins/builtins-constructor.h"
      10             : #include "src/code-stubs.h"
      11             : #include "src/objects-inl.h"
      12             : 
      13             : namespace v8 {
      14             : namespace internal {
      15             : namespace interpreter {
      16             : 
      17             : // static
      18      151119 : uint8_t CreateArrayLiteralFlags::Encode(bool use_fast_shallow_clone,
      19             :                                         int runtime_flags) {
      20             :   uint8_t result = FlagsBits::encode(runtime_flags);
      21      151119 :   result |= FastShallowCloneBit::encode(use_fast_shallow_clone);
      22      151119 :   return result;
      23             : }
      24             : 
      25             : // static
      26      346528 : uint8_t CreateObjectLiteralFlags::Encode(bool fast_clone_supported,
      27             :                                          int properties_count,
      28             :                                          int runtime_flags) {
      29             :   uint8_t result = FlagsBits::encode(runtime_flags);
      30      346528 :   if (fast_clone_supported) {
      31             :     STATIC_ASSERT(
      32             :         ConstructorBuiltins::kMaximumClonedShallowObjectProperties <=
      33             :         1 << CreateObjectLiteralFlags::FastClonePropertiesCountBits::kShift);
      34             :     DCHECK_LE(properties_count,
      35             :               ConstructorBuiltins::kMaximumClonedShallowObjectProperties);
      36             :     result |= CreateObjectLiteralFlags::FastClonePropertiesCountBits::encode(
      37      104372 :         properties_count);
      38             :   }
      39      346528 :   return result;
      40             : }
      41             : 
      42             : // static
      43     3431460 : uint8_t CreateClosureFlags::Encode(bool pretenure, bool is_function_scope) {
      44             :   uint8_t result = PretenuredBit::encode(pretenure);
      45     3431460 :   if (!FLAG_always_opt && !FLAG_prepare_always_opt &&
      46     1915059 :       pretenure == NOT_TENURED && is_function_scope) {
      47      888212 :     result |= FastNewClosureBit::encode(true);
      48             :   }
      49     3431460 :   return result;
      50             : }
      51             : 
      52             : // static
      53      160799 : TestTypeOfFlags::LiteralFlag TestTypeOfFlags::GetFlagForLiteral(
      54      881148 :     const AstStringConstants* ast_constants, Literal* literal) {
      55      160799 :   const AstRawString* raw_literal = literal->raw_value()->AsString();
      56      160799 :   if (raw_literal == ast_constants->number_string()) {
      57             :     return LiteralFlag::kNumber;
      58      126489 :   } else if (raw_literal == ast_constants->string_string()) {
      59             :     return LiteralFlag::kString;
      60      109431 :   } else if (raw_literal == ast_constants->symbol_string()) {
      61             :     return LiteralFlag::kSymbol;
      62      104748 :   } else if (raw_literal == ast_constants->boolean_string()) {
      63             :     return LiteralFlag::kBoolean;
      64      101983 :   } else if (raw_literal == ast_constants->undefined_string()) {
      65             :     return LiteralFlag::kUndefined;
      66       95823 :   } else if (raw_literal == ast_constants->function_string()) {
      67             :     return LiteralFlag::kFunction;
      68       21076 :   } else if (raw_literal == ast_constants->object_string()) {
      69             :     return LiteralFlag::kObject;
      70             :   } else {
      71         184 :     return LiteralFlag::kOther;
      72             :   }
      73             : }
      74             : 
      75             : // static
      76      160665 : uint8_t TestTypeOfFlags::Encode(LiteralFlag literal_flag) {
      77      160665 :   return static_cast<uint8_t>(literal_flag);
      78             : }
      79             : 
      80             : // static
      81       59584 : TestTypeOfFlags::LiteralFlag TestTypeOfFlags::Decode(uint8_t raw_flag) {
      82             :   DCHECK_LE(raw_flag, static_cast<uint8_t>(LiteralFlag::kOther));
      83       59584 :   return static_cast<LiteralFlag>(raw_flag);
      84             : }
      85             : 
      86             : // static
      87       19834 : uint8_t SuspendGeneratorBytecodeFlags::Encode(SuspendFlags flags) {
      88       19834 :   return FlagsBits::encode(flags);
      89             : }
      90             : 
      91             : // static
      92        6825 : SuspendFlags SuspendGeneratorBytecodeFlags::Decode(uint8_t flags) {
      93        6825 :   return FlagsBits::decode(flags);
      94             : }
      95             : 
      96             : }  // namespace interpreter
      97             : }  // namespace internal
      98             : }  // namespace v8