[compiler] [wasm] Introduce Word32/64ReverseBytes as TF Optional Opcode

src/s390/simulator-s390.h

Index: src/s390/simulator-s390.h
diff --git a/src/s390/simulator-s390.h b/src/s390/simulator-s390.h
index b9ee25dc42768e6045aa48795011ff514ec13188..7af00ee25f94483276a973efe184fed5b2c40824 100644
--- a/src/s390/simulator-s390.h
+++ b/src/s390/simulator-s390.h
@@ -281,6 +281,7 @@ class Simulator {
   // Byte Reverse
   inline int16_t ByteReverse(int16_t hword);
   inline int32_t ByteReverse(int32_t word);
+  inline int64_t ByteReverse(int64_t dword);
 
   // Read and write memory.
   inline uint8_t ReadBU(intptr_t addr);
@@ -296,6 +297,7 @@ class Simulator {
 
   inline uint32_t ReadWU(intptr_t addr, Instruction* instr);
   inline int32_t ReadW(intptr_t addr, Instruction* instr);
+  inline int64_t ReadW64(intptr_t addr, Instruction* instr);
   inline void WriteW(intptr_t addr, uint32_t value, Instruction* instr);
   inline void WriteW(intptr_t addr, int32_t value, Instruction* instr);