PPC64: Implemented the Word64Popcnt TurboFan operator.

src/ppc/disasm-ppc.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 595 matching lines @@
       return;
     }
     case STFDUX: {
       Format(instr, "stfdux   'rs, 'ra, 'rb");
       return;
     }
     case POPCNTW: {
       Format(instr, "popcntw  'ra, 'rs");
       return;
     }
+#if V8_TARGET_ARCH_PPC64
+    case POPCNTD: {
+      Format(instr, "popcntd  'ra, 'rs");
+      return;
+    }
+#endif
   }
 
   switch (instr->Bits(10, 2) << 2) {
     case SRADIX: {
       Format(instr, "sradi'.  'ra,'rs,'sh");
       return;
     }
   }
 
   // ?? are all of these xo_form?
@@ skipping 780 matching lines @@
     pc += d.InstructionDecode(buffer, pc);
     v8::internal::PrintF(f, "%p    %08x      %s\n", prev_pc,
                          *reinterpret_cast<int32_t*>(prev_pc), buffer.start());
   }
 }
 
 
 }  // namespace disasm
 
 #endif  // V8_TARGET_ARCH_PPC