s390: optimize for compares

src/s390/assembler-s390.h

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // All Rights Reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions
 // are met:
 //
 // - Redistributions of source code must retain the above copyright notice,
 // this list of conditions and the following disclaimer.
 //
@@ skipping 988 matching lines @@
   void vfm(DoubleRegister v1, DoubleRegister v2, DoubleRegister v3) {
     vfm(v1, v2, v3, static_cast<Condition>(0), static_cast<Condition>(8),
         static_cast<Condition>(3));
   }
   void vfd(DoubleRegister v1, DoubleRegister v2, DoubleRegister v3) {
     vfd(v1, v2, v3, static_cast<Condition>(0), static_cast<Condition>(8),
         static_cast<Condition>(3));
   }
 
   // S390 instruction sets
-  RXE_FORM(cdb);
-  RXE_FORM(ceb);
   RXE_FORM(ddb);
   SS1_FORM(ed);
   RRF2_FORM(fidbr);
   RI1_FORM(iihh);
   RI1_FORM(iihl);
   RI1_FORM(iilh);
   RI1_FORM(iill);
   RSY1_FORM(loc);
   RXE_FORM(mdb);
   SS4_FORM(mvck);
@@ skipping 170 matching lines @@
   void clgebr(Condition m3, Condition m4, Register fixReg,
               DoubleRegister fltReg);
   void cfdbr(Condition m, Register fixReg, DoubleRegister fltReg);
   void cgebr(Condition m, Register fixReg, DoubleRegister fltReg);
   void cgdbr(Condition m, Register fixReg, DoubleRegister fltReg);
   void cfebr(Condition m3, Register fixReg, DoubleRegister fltReg);
   void cefbr(Condition m3, DoubleRegister fltReg, Register fixReg);
 
   // Floating Point Compare Instructions
   void cdb(DoubleRegister r1, const MemOperand& opnd);
+  void ceb(DoubleRegister r1, const MemOperand& opnd);
 
   // Floating Point Arithmetic Instructions
   void adb(DoubleRegister r1, const MemOperand& opnd);
   void sdb(DoubleRegister r1, const MemOperand& opnd);
   void mdb(DoubleRegister r1, const MemOperand& opnd);
   void ddb(DoubleRegister r1, const MemOperand& opnd);
   void sqdb(DoubleRegister r1, const MemOperand& opnd);
   void ldeb(DoubleRegister r1, const MemOperand& opnd);
 
   enum FIDBRA_MASK3 {
@@ skipping 252 matching lines @@
 
 class EnsureSpace BASE_EMBEDDED {
  public:
   explicit EnsureSpace(Assembler* assembler) { assembler->CheckBuffer(); }
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_S390_ASSEMBLER_S390_H_