[v8-dev] ARM: Optimize fixed double arguments

src/arm/code-stubs-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 1458 matching lines @@
       return Runtime::kAbort;
   }
 }
 
 
 void MathPowStub::Generate(MacroAssembler* masm) {
   const Register base = r1;
   const Register exponent = r2;
   const Register heapnumbermap = r5;
   const Register heapnumber = r0;
-  const DwVfpRegister double_base = d1;
-  const DwVfpRegister double_exponent = d2;
-  const DwVfpRegister double_result = d3;
-  const DwVfpRegister double_scratch = d0;
-  const SwVfpRegister single_scratch = s0;
+  const DwVfpRegister double_base = d0;
+  const DwVfpRegister double_exponent = d1;
+  const DwVfpRegister double_result = d2;
+  const DwVfpRegister double_scratch = d3;
+  const SwVfpRegister single_scratch = s6;
   const Register scratch = r9;
   const Register scratch2 = r4;
 
   Label call_runtime, done, int_exponent;
   if (exponent_type_ == ON_STACK) {
     Label base_is_smi, unpack_exponent;
     // The exponent and base are supplied as arguments on the stack.
     // This can only happen if the stub is called from non-optimized code.
     // Load input parameters from stack to double registers.
     __ ldr(base, MemOperand(sp, 1 * kPointerSize));
@@ skipping 4638 matching lines @@
   __ bind(&fast_elements_case);
   GenerateCase(masm, FAST_ELEMENTS);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM