Make typing-asm match spec more closely around load/store, add more tests.

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.h"
 #include "src/effects.h"
@@ skipping 18 matching lines @@
  private:
   Zone* zone_;
   Script* script_;
   FunctionLiteral* root_;
   bool valid_;
 
   // Information for bi-directional typing with a cap on nesting depth.
   Type* expected_type_;
   Type* computed_type_;
   int intish_;  // How many ops we've gone without a x|0.
+  bool assigning_;  // Are we about to assign.
 
   Type* return_type_;  // Return type of last function.
   size_t array_size_;  // Array size of last ArrayLiteral.
 
   typedef ZoneMap<std::string, Type*> ObjectTypeMap;
   ObjectTypeMap stdlib_types_;
   ObjectTypeMap stdlib_heap_types_;
   ObjectTypeMap stdlib_math_types_;
 
   // 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_;
 
   TypeCache const& cache_;
 
   static const int kErrorMessageLimit = 100;
   char error_message_[kErrorMessageLimit];
 
   static const int kMaxUncombinedAdditiveSteps = 1 << 20;
   static const int kMaxUncombinedMultiplicativeSteps = 1;
 
   void InitializeStdlib();
 
   void VisitDeclarations(ZoneList<Declaration*>* d) override;
   void VisitStatements(ZoneList<Statement*>* s) override;
 
-  void VisitExpressionAnnotation(Expression* e, bool is_return);
+  void VisitExpressionAnnotation(Expression* e, Variable* var, bool is_return);
   void VisitFunctionAnnotation(FunctionLiteral* f);
   void VisitAsmModule(FunctionLiteral* f);
 
   void VisitHeapAccess(Property* expr);
 
   int ElementShiftSize(Type* type);
   Type* StorageType(Type* type);
 
   void SetType(Variable* variable, Type* type);
   Type* GetType(Variable* variable);
@@ skipping 17 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_