S390: Use FIEBRA/FIDBRA for FP Floor/Ceil

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 1162 matching lines @@
                              Register scratch, DoubleRegister double_scratch);
 
   // Floor a double and writes the value to the result register.
   // Go to exact if the conversion is exact (to be able to test -0),
   // fall through calling code if an overflow occurred, else go to done.
   // In return, input_high is loaded with high bits of input.
   void TryInt32Floor(Register result, DoubleRegister double_input,
                      Register input_high, Register scratch,
                      DoubleRegister double_scratch, Label* done, Label* exact);
 
-  // Perform ceiling of float in input_register and store in double_output.
-  void FloatCeiling32(DoubleRegister double_output, DoubleRegister double_input,
-                      Register scratch, DoubleRegister double_scratch);
-
-  // Perform floor of float in input_register and store in double_output.
-  void FloatFloor32(DoubleRegister double_output, DoubleRegister double_input,
-                    Register scratch);
-
-  // Perform ceiling of double in input_register and store in double_output.
-  void FloatCeiling64(DoubleRegister double_output, DoubleRegister double_input,
-                      Register scratch, DoubleRegister double_scratch);
-
-  // Perform floor of double in input_register and store in double_output.
-  void FloatFloor64(DoubleRegister double_output, DoubleRegister double_input,
-                    Register scratch);
-
   // Performs a truncating conversion of a floating point number as used by
   // the JS bitwise operations. See ECMA-262 9.5: ToInt32. Goes to 'done' if it
   // succeeds, otherwise falls through if result is saturated. On return
   // 'result' either holds answer, or is clobbered on fall through.
   //
   // Only public for the test code in test-code-stubs-arm.cc.
   void TryInlineTruncateDoubleToI(Register result, DoubleRegister input,
                                   Label* done);
 
   // Performs a truncating conversion of a floating point number as used by
@@ skipping 686 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_