PPC: Cleanup CRegister definition.

src/ppc/assembler-ppc.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 238 matching lines @@
 // compilation unit that includes this header doesn't use the variables.
 #define kFirstCalleeSavedDoubleReg d14
 #define kLastCalleeSavedDoubleReg d31
 #define kDoubleRegZero d14
 #define kScratchDoubleReg d13
 
 Register ToRegister(int num);
 
 // Coprocessor register
 struct CRegister {
-  bool is_valid() const { return 0 <= reg_code && reg_code < 16; }
+  bool is_valid() const { return 0 <= reg_code && reg_code < 8; }
   bool is(CRegister creg) const { return reg_code == creg.reg_code; }
   int code() const {
     DCHECK(is_valid());
     return reg_code;
   }
   int bit() const {
     DCHECK(is_valid());
     return 1 << reg_code;
   }
 
   // Unfortunately we can't make this private in a struct.
   int reg_code;
 };
 
 
 const CRegister no_creg = {-1};
 
 const CRegister cr0 = {0};
 const CRegister cr1 = {1};
 const CRegister cr2 = {2};
 const CRegister cr3 = {3};
 const CRegister cr4 = {4};
 const CRegister cr5 = {5};
 const CRegister cr6 = {6};
 const CRegister cr7 = {7};
-const CRegister cr8 = {8};
-const CRegister cr9 = {9};
-const CRegister cr10 = {10};
-const CRegister cr11 = {11};
-const CRegister cr12 = {12};
-const CRegister cr13 = {13};
-const CRegister cr14 = {14};
-const CRegister cr15 = {15};
 
 // TODO(ppc) Define SIMD registers.
 typedef DoubleRegister Simd128Register;
 
 // -----------------------------------------------------------------------------
 // Machine instruction Operands
 
 #if V8_TARGET_ARCH_PPC64
 const RelocInfo::Mode kRelocInfo_NONEPTR = RelocInfo::NONE64;
 #else
@@ skipping 1175 matching lines @@
 
 
 class EnsureSpace BASE_EMBEDDED {
  public:
   explicit EnsureSpace(Assembler* assembler) { assembler->CheckBuffer(); }
 };
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_PPC_ASSEMBLER_PPC_H_