Remove Expression::bounds_, in order to conserve memory during parsing.

src/typing-asm.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_TYPING_ASM_H_
 #define V8_TYPING_ASM_H_
 
 #include "src/allocation.h"
+#include "src/ast/ast-type-bounds.h"
 #include "src/ast/ast.h"
 #include "src/effects.h"
 #include "src/type-info.h"
 #include "src/types.h"
 #include "src/zone.h"
 
 namespace v8 {
 namespace internal {
 
 class TypeCache;
 
 class AsmTyper : public AstVisitor {
  public:
   explicit AsmTyper(Isolate* isolate, Zone* zone, Script* script,
                     FunctionLiteral* root);
   bool Validate();
   void set_allow_simd(bool simd) { allow_simd_ = simd; }
   const char* error_message() { return error_message_; }
+  const AstTypeBounds* bounds() { return &bounds_; }
 
   enum StandardMember {
     kNone = 0,
     kStdlib,
     kInfinity,
     kNaN,
     kMathAcos,
     kMathAsin,
     kMathAtan,
     kMathCos,
@@ skipping 73 matching lines @@
   // Map from Variable* to global/local variable Type*.
   ZoneHashMap global_variable_type_;
   ZoneHashMap local_variable_type_;
 
   bool in_function_;  // In module function?
   bool building_function_tables_;
   bool visiting_exports_;
 
   TypeCache const& cache_;
 
+  AstTypeBounds bounds_;
+
   static const int kErrorMessageLimit = 100;
   char error_message_[kErrorMessageLimit];
 
   static const int kMaxUncombinedAdditiveSteps = 1 << 20;
   static const int kMaxUncombinedMultiplicativeSteps = 1;
 
   void InitializeStdlib();
   void InitializeStdlibSIMD();
 
   void VisitDeclarations(ZoneList<Declaration*>* d) override;
@@ skipping 45 matching lines @@
 #define DECLARE_VISIT(type) void Visit##type(type* node) override;
   AST_NODE_LIST(DECLARE_VISIT)
 #undef DECLARE_VISIT
 
   DISALLOW_COPY_AND_ASSIGN(AsmTyper);
 };
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TYPING_ASM_H_