[wasm] Make sure the interpreter only executes preprocessed code.

src/wasm/wasm-interpreter.cc

 // Copyright 2016 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.
 
 #include "src/wasm/wasm-interpreter.h"
 
 #include "src/utils.h"
 #include "src/wasm/ast-decoder.h"
 #include "src/wasm/decoder.h"
 #include "src/wasm/wasm-external-refs.h"
@@ skipping 923 matching lines @@
           module->module_start + function->code_start_offset;
       const byte* code_end = module->module_start + function->code_end_offset;
       AddFunction(function, code_start, code_end);
     }
   }
 
   InterpreterCode* FindCode(const WasmFunction* function) {
     if (function->func_index < interpreter_code_.size()) {
       InterpreterCode* code = &interpreter_code_[function->func_index];
       DCHECK_EQ(function, code->function);
-      return code;
+      return Preprocess(code);
     }
     return nullptr;
   }
 
   InterpreterCode* GetCode(uint32_t function_index) {
     CHECK_LT(function_index, interpreter_code_.size());
     return Preprocess(&interpreter_code_[function_index]);
   }
 
   InterpreterCode* GetIndirectCode(uint32_t table_index, uint32_t entry_index) {
@@ skipping 895 matching lines @@
 
 ControlTransferMap WasmInterpreter::ComputeControlTransfersForTesting(
     Zone* zone, const byte* start, const byte* end) {
   ControlTransfers targets(zone, 0, start, end);
   return targets.map_;
 }
 
 }  // namespace wasm
 }  // namespace internal
 }  // namespace v8