s390: optimize for compares

src/s390/disasm-s390.cc

 // 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.
 
 // A Disassembler object is used to disassemble a block of code instruction by
 // instruction. The default implementation of the NameConverter object can be
 // overriden to modify register names or to do symbol lookup on addresses.
 //
 // The example below will disassemble a block of code and print it to stdout.
 //
@@ skipping 1410 matching lines @@
     case MSY:
       Format(instr, "msy\t'r1,'d2('r2d,'r3)");
       break;
     case STEY:
       Format(instr, "stey\t'f1,'d2('r2d,'r3)");
       break;
     case STDY:
       Format(instr, "stdy\t'f1,'d2('r2d,'r3)");
       break;
     case ADB:
-      Format(instr, "adb\t'r1,'d1('r2d, 'r3)");
+      Format(instr, "adb\t'f1,'d1('r2d, 'r3)");
+      break;
+    case CDB:
+      Format(instr, "cdb\t'f1,'d1('r2d, 'r3)");
+      break;
+    case CEB:
+      Format(instr, "ceb\t'f1,'d1('r2d, 'r3)");
       break;
     case SDB:
       Format(instr, "sdb\t'r1,'d1('r2d, 'r3)");
       break;
     case MDB:
       Format(instr, "mdb\t'r1,'d1('r2d, 'r3)");
       break;
     case DDB:
       Format(instr, "ddb\t'r1,'d1('r2d, 'r3)");
       break;
@@ skipping 89 matching lines @@
     byte* prev_pc = pc;
     pc += d.InstructionDecode(buffer, pc);
     v8::internal::PrintF(f, "%p    %08x      %s\n", static_cast<void*>(prev_pc),
                          *reinterpret_cast<int32_t*>(prev_pc), buffer.start());
   }
 }
 
 }  // namespace disasm
 
 #endif  // V8_TARGET_ARCH_S390