S390: Fix convertion from int32 to float32

src/s390/macro-assembler-s390.h

 // Copyright 2014 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_S390_MACRO_ASSEMBLER_S390_H_
 #define V8_S390_MACRO_ASSEMBLER_S390_H_
 
 #include "src/assembler.h"
 #include "src/bailout-reason.h"
 #include "src/frames.h"
@@ skipping 674 matching lines @@
   void ConvertDoubleToInt64(const DoubleRegister double_input,
 #if !V8_TARGET_ARCH_S390X
                             const Register dst_hi,
 #endif
                             const Register dst, const DoubleRegister double_dst,
                             FPRoundingMode rounding_mode = kRoundToZero);
 
   void ConvertFloat32ToInt32(const DoubleRegister double_input,
                              const Register dst,
                              const DoubleRegister double_dst,
-                             FPRoundingMode rounding_mode = kRoundToZero);
+                             FPRoundingMode rounding_mode);
   void ConvertFloat32ToUnsignedInt32(
       const DoubleRegister double_input, const Register dst,
       const DoubleRegister double_dst,
       FPRoundingMode rounding_mode = kRoundToZero);
 #if V8_TARGET_ARCH_S390X
   // Converts the double_input to an unsigned integer.  Note that, upon return,
   // the contents of double_dst will also hold the fixed point representation.
   void ConvertDoubleToUnsignedInt64(
       const DoubleRegister double_input, const Register dst,
       const DoubleRegister double_dst,
@@ skipping 1208 matching lines @@
 #define ACCESS_MASM(masm)    \
   masm->stop(__FILE_LINE__); \
   masm->
 #else
 #define ACCESS_MASM(masm) masm->
 #endif
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_S390_MACRO_ASSEMBLER_S390_H_