ARM: Make use of d16-d31 when available.

src/arm/codegen-arm.cc

 // Copyright 2012 the V8 project authors. 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.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 576 matching lines @@
   ASSERT(!temp1.is(temp2));
   ASSERT(!temp1.is(temp3));
   ASSERT(!temp2.is(temp3));
   ASSERT(ExternalReference::math_exp_constants(0).address() != NULL);
 
   Label done;
 
   __ mov(temp3, Operand(ExternalReference::math_exp_constants(0)));
 
   __ vldr(double_scratch1, ExpConstant(0, temp3));
-  __ vmov(result, kDoubleRegZero);
+  __ vmov(result, DwVfpRegister::ZeroReg());
   __ VFPCompareAndSetFlags(double_scratch1, input);
   __ b(ge, &done);
   __ vldr(double_scratch2, ExpConstant(1, temp3));
   __ VFPCompareAndSetFlags(input, double_scratch2);
   __ vldr(result, ExpConstant(2, temp3));
   __ b(ge, &done);
   __ vldr(double_scratch1, ExpConstant(3, temp3));
   __ vldr(result, ExpConstant(4, temp3));
   __ vmul(double_scratch1, double_scratch1, input);
   __ vadd(double_scratch1, double_scratch1, result);
@@ skipping 90 matching lines @@
     patcher.masm()->add(r0, pc, Operand(-8));
     patcher.masm()->ldr(pc, MemOperand(pc, -4));
     patcher.masm()->dd(reinterpret_cast<uint32_t>(stub->instruction_start()));
   }
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM