Revert of [wasm] Identify wasm functions with index into the function tables.

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 50 matching lines @@
                                           wasm::ModuleBytesEnv* module_env,
                                           const wasm::WasmFunction* function) {
     WasmCompilationUnit unit(thrower, isolate, module_env, function,
                              function->func_index);
     unit.ExecuteCompilation();
     return unit.FinishCompilation();
   }
 
  private:
   SourcePositionTable* BuildGraphForWasmFunction(double* decode_ms);
-  char* GetTaggedFunctionName(const wasm::WasmFunction* function);
 
   wasm::ErrorThrower* thrower_;
   Isolate* isolate_;
   wasm::ModuleBytesEnv* module_env_;
   const wasm::WasmFunction* function_;
-  // Function name is tagged with uint32 func_index - wasm#<func_index>
-  char function_name_[16];
   // The graph zone is deallocated at the end of ExecuteCompilation.
   std::unique_ptr<Zone> graph_zone_;
   JSGraph* jsgraph_;
   Zone compilation_zone_;
   CompilationInfo info_;
   std::unique_ptr<CompilationJob> job_;
   uint32_t index_;
   wasm::Result<wasm::DecodeStruct*> graph_construction_result_;
   bool ok_;
   ZoneVector<trap_handler::ProtectedInstructionData>
@@ skipping 299 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_