S390: Implement RotRight64

src/compiler/s390/code-generator-s390.cc

 // Copyright 2015 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.
 
 #include "src/compiler/code-generator.h"
 
 #include "src/ast/scopes.h"
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
@@ skipping 911 matching lines @@
         __ rll(i.OutputRegister(), i.InputRegister(0), kScratchReg);
       } else {
         __ rll(i.OutputRegister(), i.InputRegister(0),
                Operand(32 - i.InputInt32(1)));
       }
       break;
 #if V8_TARGET_ARCH_S390X
     case kS390_RotRight64:
       if (HasRegisterInput(instr, 1)) {
         __ LoadComplementRR(kScratchReg, i.InputRegister(1));
-        __ rll(i.OutputRegister(), i.InputRegister(0), kScratchReg,
-               Operand(32));
-        __ lgfr(i.OutputRegister(), i.OutputRegister());
+        __ rllg(i.OutputRegister(), i.InputRegister(0), kScratchReg);
       } else {
-        UNIMPLEMENTED();  // Not implemented for now
+        __ rllg(i.OutputRegister(), i.InputRegister(0),
+                Operand(64 - i.InputInt32(1)));
       }
       break;
 #endif
     case kS390_Not:
       __ LoadRR(i.OutputRegister(), i.InputRegister(0));
       __ NotP(i.OutputRegister());
       break;
     case kS390_RotLeftAndMask32:
       if (CpuFeatures::IsSupported(GENERAL_INSTR_EXT)) {
         int shiftAmount = i.InputInt32(1);
@@ skipping 1120 matching lines @@
       padding_size -= 2;
     }
   }
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8