s390: optimize for compares

src/s390/assembler-s390.cc

 // 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 1227 matching lines @@
 //    0                  16   20   24   28  31
 void Assembler::rrfe_form(Opcode op, Condition m3, Condition m4, Register r1,
                           Register r2) {
   uint32_t code = op << 16 | m3 * B12 | m4 * B8 | r1.code() * B4 | r2.code();
   emit4bytes(code);
 }
 
 // end of S390 Instruction generation
 
 // start of S390 instruction
-RXE_FORM_EMIT(ceb, CEB)
 SS1_FORM_EMIT(ed, ED)
 SS1_FORM_EMIT(mvn, MVN)
 SS1_FORM_EMIT(nc, NC)
 SI_FORM_EMIT(ni, NI)
 RI1_FORM_EMIT(nilh, NILH)
 RI1_FORM_EMIT(nill, NILL)
 RI1_FORM_EMIT(oill, OILL)
 RI1_FORM_EMIT(tmll, TMLL)
 SS1_FORM_EMIT(tr, TR)
 S_FORM_EMIT(ts, TS)
@@ skipping 582 matching lines @@
   rxe_form(MDB, Register::from_code(r1.code()), opnd.rb(), opnd.rx(),
            opnd.offset());
 }
 
 // Subtract Register-Storage (LB)
 void Assembler::sdb(DoubleRegister r1, const MemOperand& opnd) {
   rxe_form(SDB, Register::from_code(r1.code()), opnd.rx(), opnd.rb(),
            opnd.offset());
 }
 
+void Assembler::ceb(DoubleRegister r1, const MemOperand& opnd) {
+  rxe_form(CEB, Register::from_code(r1.code()), opnd.rx(), opnd.rb(),
+           opnd.offset());
+}
+
+void Assembler::cdb(DoubleRegister r1, const MemOperand& opnd) {
+  rxe_form(CDB, Register::from_code(r1.code()), opnd.rx(), opnd.rb(),
+           opnd.offset());
+}
+
 // Square Root (LB)
 void Assembler::sqdb(DoubleRegister r1, const MemOperand& opnd) {
   rxe_form(SQDB, Register::from_code(r1.code()), opnd.rx(), opnd.rb(),
            opnd.offset());
 }
 
 // Convert to Fixed point (64<-S)
 void Assembler::cgebr(Condition m, Register r1, DoubleRegister r2) {
   rrfe_form(CGEBR, m, Condition(0), r1, Register::from_code(r2.code()));
 }
@@ skipping 237 matching lines @@
                             SKIP_ICACHE_FLUSH);
     }
 
     reloc_info_writer.Write(&rinfo);
   }
 }
 
 }  // namespace internal
 }  // namespace v8
 #endif  // V8_TARGET_ARCH_S390