[interpreter] Fix U16 macro in test-bytecode-generator.cc.

test/cctest/interpreter/test-bytecode-generator.cc

 // 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.
 
 #include "src/v8.h"
 
 #include "src/compiler.h"
 #include "src/interpreter/bytecode-array-iterator.h"
 #include "src/interpreter/bytecode-generator.h"
 #include "src/interpreter/interpreter.h"
@@ skipping 63 matching lines @@
     SNPrintF(program, "%s\n%s();", function, kFunctionName);
     Handle<BytecodeArray> return_val =
         MakeBytecode(program.start(), kFunctionName);
     i::FLAG_ignition_filter = old_ignition_filter;
     return return_val;
   }
 };
 
 
 // Helper macros for handcrafting bytecode sequences.
+int u16_temp;
+
 #define B(x) static_cast<uint8_t>(Bytecode::k##x)
 #define U8(x) static_cast<uint8_t>((x) & 0xff)
 #define R(x) static_cast<uint8_t>(-(x) & 0xff)
 #define A(x, n) R(helper.kLastParamIndex - (n) + 1 + (x))
 #define THIS(n) A(0, n)
 #if defined(V8_TARGET_LITTLE_ENDIAN)
-#define U16(x) static_cast<uint8_t>((x) & 0xff),                    \
-               static_cast<uint8_t>(((x) >> kBitsPerByte) & 0xff)
+#define U16(x)                                   \
+  static_cast<uint8_t>((u16_temp = (x)) & 0xff), \
+      static_cast<uint8_t>(((u16_temp) >> kBitsPerByte) & 0xff)
 #elif defined(V8_TARGET_BIG_ENDIAN)
-#define U16(x) static_cast<uint8_t>(((x) >> kBitsPerByte) & 0xff),   \
-               static_cast<uint8_t>((x) & 0xff)
+#define U16(x)                                                     \
+  static_cast<uint8_t>(((u16_temp = (x)) >> kBitsPerByte) & 0xff), \
+      static_cast<uint8_t>((u16_temp)&0xff)
 #else
 #error Unknown byte ordering
 #endif
 
 #define COMMA() ,
 #define SPACE()
 
 #define REPEAT_2(SEP, ...)  \
   __VA_ARGS__ SEP() __VA_ARGS__
 #define REPEAT_4(SEP, ...)  \
@@ skipping 4232 matching lines @@
   for (size_t i = 0; i < arraysize(snippets); i++) {
     Handle<BytecodeArray> bytecode_array =
         helper.MakeBytecodeForFunctionBody(snippets[i].code_snippet);
     CheckBytecodeArrayEqual(snippets[i], bytecode_array);
   }
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8