Simplify DoubleRegister for the ia32 port.

src/ia32/code-stubs-ia32.h

 // Copyright 2011 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.
 
 #ifndef V8_IA32_CODE_STUBS_IA32_H_
 #define V8_IA32_CODE_STUBS_IA32_H_
 
 #include "macro-assembler.h"
 #include "ic-inl.h"
 
@@ skipping 318 matching lines @@
 
     // If we have to call into C then we need to save and restore all caller-
     // saved registers that were not already preserved.  The caller saved
     // registers are eax, ecx and edx.  The three scratch registers (incl. ecx)
     // will be restored by other means so we don't bother pushing them here.
     void SaveCallerSaveRegisters(MacroAssembler* masm, SaveFPRegsMode mode) {
       if (!scratch0_.is(eax) && !scratch1_.is(eax)) masm->push(eax);
       if (!scratch0_.is(edx) && !scratch1_.is(edx)) masm->push(edx);
       if (mode == kSaveFPRegs) {
         masm->sub(esp,
-                  Immediate(kDoubleSize * (XMMRegister::kNumRegisters - 1)));
+                  Immediate(kDoubleSize * (XMMRegister::kMaxNumRegisters - 1)));
         // Save all XMM registers except XMM0.
-        for (int i = XMMRegister::kNumRegisters - 1; i > 0; i--) {
+        for (int i = XMMRegister::kMaxNumRegisters - 1; i > 0; i--) {
           XMMRegister reg = XMMRegister::from_code(i);
           masm->movsd(Operand(esp, (i - 1) * kDoubleSize), reg);
         }
       }
     }
 
     inline void RestoreCallerSaveRegisters(MacroAssembler*masm,
                                            SaveFPRegsMode mode) {
       if (mode == kSaveFPRegs) {
         // Restore all XMM registers except XMM0.
-        for (int i = XMMRegister::kNumRegisters - 1; i > 0; i--) {
+        for (int i = XMMRegister::kMaxNumRegisters - 1; i > 0; i--) {
           XMMRegister reg = XMMRegister::from_code(i);
           masm->movsd(reg, Operand(esp, (i - 1) * kDoubleSize));
         }
         masm->add(esp,
-                  Immediate(kDoubleSize * (XMMRegister::kNumRegisters - 1)));
+                  Immediate(kDoubleSize * (XMMRegister::kMaxNumRegisters - 1)));
       }
       if (!scratch0_.is(edx) && !scratch1_.is(edx)) masm->pop(edx);
       if (!scratch0_.is(eax) && !scratch1_.is(eax)) masm->pop(eax);
     }
 
     inline Register object() { return object_; }
     inline Register address() { return address_; }
     inline Register scratch0() { return scratch0_; }
     inline Register scratch1() { return scratch1_; }
 
@@ skipping 62 matching lines @@
   Register address_;
   RememberedSetAction remembered_set_action_;
   SaveFPRegsMode save_fp_regs_mode_;
   RegisterAllocation regs_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_IA32_CODE_STUBS_IA32_H_