Revert of [wasm] Fix I32ReinterpretF32 and I64ReinterpretF64 on ia32.

src/wasm/wasm-interpreter.h

Index: src/wasm/wasm-interpreter.h
diff --git a/src/wasm/wasm-interpreter.h b/src/wasm/wasm-interpreter.h
index 87758bdd24f352c7a7158aa517afa140308b1c40..217c8b37f0bf8cca7702000b8ef7f142ab07bfc6 100644
--- a/src/wasm/wasm-interpreter.h
+++ b/src/wasm/wasm-interpreter.h
@@ -56,21 +56,12 @@
 #undef DECLARE_CONSTRUCTOR
 
   template <typename T>
-  inline T to() {
-    UNREACHABLE();
-  }
-
-  template <typename T>
-  inline T to_unchecked() {
+  T to() {
     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);                \
@@ -78,6 +69,11 @@
   }
 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 {