S390: Use FIEBRA/FIDBRA for FP Floor/Ceil

src/s390/macro-assembler-s390.h

Index: src/s390/macro-assembler-s390.h
diff --git a/src/s390/macro-assembler-s390.h b/src/s390/macro-assembler-s390.h
index d1eff2c47dd5e64dc5c9d683ffcdc88cf3a0f7dd..eb1c1673bdd6079f05b968d6b309625b4c4dd38f 100644
--- a/src/s390/macro-assembler-s390.h
+++ b/src/s390/macro-assembler-s390.h
@@ -1180,22 +1180,6 @@ class MacroAssembler : public Assembler {
                      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