Simplify DoubleRegister for the ia32 port.

src/ia32/code-stubs-ia32.cc

 // Copyright 2012 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 "v8.h"
 
 #if V8_TARGET_ARCH_IA32
 
 #include "bootstrapper.h"
 #include "code-stubs.h"
@@ skipping 462 matching lines @@
   __ ret(0);
 }
 
 
 void StoreBufferOverflowStub::Generate(MacroAssembler* masm) {
   // We don't allow a GC during a store buffer overflow so there is no need to
   // store the registers in any particular way, but we do have to store and
   // restore them.
   __ pushad();
   if (save_doubles_ == kSaveFPRegs) {
-    __ sub(esp, Immediate(kDoubleSize * XMMRegister::kNumRegisters));
-    for (int i = 0; i < XMMRegister::kNumRegisters; i++) {
+    __ sub(esp, Immediate(kDoubleSize * XMMRegister::kMaxNumRegisters));
+    for (int i = 0; i < XMMRegister::kMaxNumRegisters; i++) {
       XMMRegister reg = XMMRegister::from_code(i);
       __ movsd(Operand(esp, i * kDoubleSize), reg);
     }
   }
   const int argument_count = 1;
 
   AllowExternalCallThatCantCauseGC scope(masm);
   __ PrepareCallCFunction(argument_count, ecx);
   __ mov(Operand(esp, 0 * kPointerSize),
          Immediate(ExternalReference::isolate_address(isolate())));
   __ CallCFunction(
       ExternalReference::store_buffer_overflow_function(isolate()),
       argument_count);
   if (save_doubles_ == kSaveFPRegs) {
-    for (int i = 0; i < XMMRegister::kNumRegisters; i++) {
+    for (int i = 0; i < XMMRegister::kMaxNumRegisters; i++) {
       XMMRegister reg = XMMRegister::from_code(i);
       __ movsd(reg, Operand(esp, i * kDoubleSize));
     }
-    __ add(esp, Immediate(kDoubleSize * XMMRegister::kNumRegisters));
+    __ add(esp, Immediate(kDoubleSize * XMMRegister::kMaxNumRegisters));
   }
   __ popad();
   __ ret(0);
 }
 
 
 class FloatingPointHelper : public AllStatic {
  public:
   enum ArgLocation {
     ARGS_ON_STACK,
@@ skipping 4561 matching lines @@
                               Operand(ebp, 7 * kPointerSize),
                               NULL);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32