[wasm] Fix I32ReinterpretF32 and I64ReinterpretF64 on ia32.

src/wasm/wasm-interpreter.h

 // 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.
 
 #ifndef V8_WASM_INTERPRETER_H_
 #define V8_WASM_INTERPRETER_H_
 
 #include "src/wasm/wasm-opcodes.h"
 #include "src/zone/zone-containers.h"
 
@@ skipping 38 matching lines @@
   } val;
 
   WasmVal() : type(kWasmStmt) {}
 
 #define DECLARE_CONSTRUCTOR(field, localtype, ctype) \
   explicit WasmVal(ctype v) : type(localtype) { val.field = v; }
   FOREACH_UNION_MEMBER(DECLARE_CONSTRUCTOR)
 #undef DECLARE_CONSTRUCTOR
 
   template <typename T>
-  T to() {
+  inline T to() {
+    UNREACHABLE();
+  }
+
+  template <typename T>
+  inline T to_unchecked() {
     UNREACHABLE();
   }
 };
 
 #define DECLARE_CAST(field, localtype, ctype) \
   template <>                                 \
+  inline ctype WasmVal::to_unchecked() {      \
+    return val.field;                         \
+  }                                           \
+  template <>                                 \
   inline ctype WasmVal::to() {                \
     CHECK_EQ(localtype, type);                \
     return val.field;                         \
   }
 FOREACH_UNION_MEMBER(DECLARE_CAST)
 #undef DECLARE_CAST
 
-template <>
-inline void WasmVal::to() {
-  CHECK_EQ(kWasmStmt, type);
-}
-
 // Representation of frames within the interpreter.
 class WasmFrame {
  public:
   const WasmFunction* function() const { return function_; }
   int pc() const {
     // TODO(wasm): Remove USE once we actually use them.
     USE(fp_);
     USE(sp_);
     return pc_;
   }
@@ skipping 115 matching lines @@
  private:
   Zone zone_;
   WasmInterpreterInternals* internals_;
 };
 
 }  // namespace wasm
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_WASM_INTERPRETER_H_