PPC: Remove register index/code indirection

src/ppc/constants-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.
 
 #if V8_TARGET_ARCH_PPC
 
 #include "src/ppc/constants-ppc.h"
 
 
 namespace v8 {
 namespace internal {
 
 // These register names are defined in a way to match the native disassembler
 // formatting. See for example the command "objdump -d <binary file>".
 const char* Registers::names_[kNumRegisters] = {
     "r0",  "sp",  "r2",  "r3",  "r4",  "r5",  "r6",  "r7",  "r8",  "r9",  "r10",
-    "r11", "r12", "r13", "r14", "r15", "r16", "r17", "r18", "r19", "r20", "r21",
+    "r11", "ip",  "r13", "r14", "r15", "r16", "r17", "r18", "r19", "r20", "r21",
     "r22", "r23", "r24", "r25", "r26", "r27", "r28", "r29", "r30", "fp"};
 
 
-// List of alias names which can be used when referring to PPC registers.
-const Registers::RegisterAlias Registers::aliases_[] = {{10, "sl"},
-                                                        {11, "r11"},
-                                                        {12, "r12"},
-                                                        {13, "r13"},
-                                                        {14, "r14"},
-                                                        {15, "r15"},
-                                                        {kNoRegister, NULL}};
-
-
-const char* Registers::Name(int reg) {
-  const char* result;
-  if ((0 <= reg) && (reg < kNumRegisters)) {
-    result = names_[reg];
-  } else {
-    result = "noreg";
-  }
-  return result;
-}
-
-
-const char* FPRegisters::names_[kNumFPRegisters] = {
+const char* DoubleRegisters::names_[kNumDoubleRegisters] = {
     "d0",  "d1",  "d2",  "d3",  "d4",  "d5",  "d6",  "d7",  "d8",  "d9",  "d10",
     "d11", "d12", "d13", "d14", "d15", "d16", "d17", "d18", "d19", "d20", "d21",
     "d22", "d23", "d24", "d25", "d26", "d27", "d28", "d29", "d30", "d31"};
 
 
-const char* FPRegisters::Name(int reg) {
-  DCHECK((0 <= reg) && (reg < kNumFPRegisters));
-  return names_[reg];
-}
-
-
-int FPRegisters::Number(const char* name) {
-  for (int i = 0; i < kNumFPRegisters; i++) {
+int DoubleRegisters::Number(const char* name) {
+  for (int i = 0; i < kNumDoubleRegisters; i++) {
     if (strcmp(names_[i], name) == 0) {
       return i;
     }
   }
 
   // No register with the requested name found.
   return kNoRegister;
 }
 
 
 int Registers::Number(const char* name) {
   // Look through the canonical names.
   for (int i = 0; i < kNumRegisters; i++) {
     if (strcmp(names_[i], name) == 0) {
       return i;
     }
   }
 
-  // Look through the alias names.
-  int i = 0;
-  while (aliases_[i].reg != kNoRegister) {
-    if (strcmp(aliases_[i].name, name) == 0) {
-      return aliases_[i].reg;
-    }
-    i++;
-  }
-
   // No register with the requested name found.
   return kNoRegister;
 }
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_PPC