[wasm] Support for restricted table imports.

src/compiler/wasm-compiler.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_COMPILER_WASM_COMPILER_H_
 #define V8_COMPILER_WASM_COMPILER_H_
 
 #include <memory>
 
 // Clients of this interface shouldn't depend on lots of compiler internals.
@@ skipping 152 matching lines @@
                    wasm::WasmCodePosition position);
   Node* CallIndirect(uint32_t index, Node** args, Node*** rets,
                      wasm::WasmCodePosition position);
 
   void BuildJSToWasmWrapper(Handle<Code> wasm_code, wasm::FunctionSig* sig);
   void BuildWasmToJSWrapper(Handle<JSReceiver> target, wasm::FunctionSig* sig);
 
   Node* ToJS(Node* node, wasm::LocalType type);
   Node* FromJS(Node* node, Node* context, wasm::LocalType type);
   Node* Invert(Node* node);
-  Node* FunctionTable(uint32_t index);
+  void EnsureFunctionTableNodes();
 
   //-----------------------------------------------------------------------
   // Operations that concern the linear memory.
   //-----------------------------------------------------------------------
   Node* CurrentMemoryPages();
   Node* GetGlobal(uint32_t index);
   Node* SetGlobal(uint32_t index, Node* val);
   Node* LoadMem(wasm::LocalType type, MachineType memtype, Node* index,
                 uint32_t offset, uint32_t alignment,
                 wasm::WasmCodePosition position);
@@ skipping 28 matching lines @@
  private:
   static const int kDefaultBufferSize = 16;
   friend class WasmTrapHelper;
 
   Zone* zone_;
   JSGraph* jsgraph_;
   wasm::ModuleEnv* module_;
   Node* mem_buffer_;
   Node* mem_size_;
   NodeVector function_tables_;
+  NodeVector function_table_sizes_;
   Node** control_;
   Node** effect_;
   Node** cur_buffer_;
   size_t cur_bufsize_;
   Node* def_buffer_[kDefaultBufferSize];
 
   WasmTrapHelper* trap_;
   wasm::FunctionSig* function_signature_;
   SetOncePointer<const Operator> allocate_heap_number_operator_;
 
@@ skipping 118 matching lines @@
   }
 
   int AddParameterNodes(Node** args, int pos, int param_count,
                         wasm::FunctionSig* sig);
 };
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_WASM_COMPILER_H_