[Interpreter] Move ToBoolean elision in BytecodeGenerator.

src/interpreter/bytecode-generator.h

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_INTERPRETER_BYTECODE_GENERATOR_H_
 #define V8_INTERPRETER_BYTECODE_GENERATOR_H_
 
 #include "src/ast/ast.h"
 #include "src/interpreter/bytecode-array-builder.h"
 #include "src/interpreter/bytecode-label.h"
@@ skipping 35 matching lines @@
   class ControlScopeForTryCatch;
   class ControlScopeForTryFinally;
   class CurrentScope;
   class ExpressionResultScope;
   class EffectResultScope;
   class GlobalDeclarationsBuilder;
   class RegisterAllocationScope;
   class TestResultScope;
   class ValueResultScope;
 
+  using ToBooleanMode = BytecodeArrayBuilder::ToBooleanMode;
+
   enum class TestFallthrough { kThen, kElse, kNone };
+  enum class TypeHint { kAny, kBoolean };
 
   void GenerateBytecodeBody();
   void AllocateDeferredConstants(Isolate* isolate);
 
   DEFINE_AST_VISITOR_SUBCLASS_MEMBERS();
 
   // Dispatched from VisitBinaryOperation.
   void VisitArithmeticExpression(BinaryOperation* binop);
   void VisitCommaExpression(BinaryOperation* binop);
   void VisitLogicalOrExpression(BinaryOperation* binop);
@@ skipping 88 matching lines @@
                             LoopBuilder* loop_builder);
   void VisitIterationBody(IterationStatement* stmt, LoopBuilder* loop_builder);
 
   // Visit a statement and switch scopes, the context is in the accumulator.
   void VisitInScope(Statement* stmt, Scope* scope);
 
   void BuildPushUndefinedIntoRegisterList(RegisterList* reg_list);
 
   // Visitors for obtaining expression result in the accumulator, in a
   // register, or just getting the effect.
-  void VisitForAccumulatorValue(Expression* expr);
+  TypeHint VisitForAccumulatorValue(Expression* expr);
   void VisitForAccumulatorValueOrTheHole(Expression* expr);
   MUST_USE_RESULT Register VisitForRegisterValue(Expression* expr);
   void VisitForRegisterValue(Expression* expr, Register destination);
   void VisitAndPushIntoRegisterList(Expression* expr, RegisterList* reg_list);
   void VisitForEffect(Expression* expr);
   void VisitForTest(Expression* expr, BytecodeLabels* then_labels,
                     BytecodeLabels* else_labels, TestFallthrough fallthrough);
 
   // Returns the runtime function id for a store to super for the function's
   // language mode.
   inline Runtime::FunctionId StoreToSuperRuntimeId();
   inline Runtime::FunctionId StoreKeyedToSuperRuntimeId();
 
+  ToBooleanMode ToBooleanModeFromTypeHint(TypeHint type_hint);
+
   inline BytecodeArrayBuilder* builder() const { return builder_; }
   inline Zone* zone() const { return zone_; }
   inline DeclarationScope* closure_scope() const { return closure_scope_; }
   inline CompilationInfo* info() const { return info_; }
   inline const AstStringConstants* ast_string_constants() const {
     return ast_string_constants_;
   }
 
   inline Scope* current_scope() const { return current_scope_; }
   inline void set_current_scope(Scope* scope) { current_scope_ = scope; }
@@ skipping 43 matching lines @@
   ZoneVector<BytecodeLabel> generator_resume_points_;
   Register generator_state_;
   int loop_depth_;
 };
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_INTERPRETER_BYTECODE_GENERATOR_H_