A64: fix after r18982.

src/a64/code-stubs-a64.cc

 // Copyright 2013 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 1309 matching lines @@
                                       Label* gc_required,
                                       Label* miss,
                                       Token::Value op,
                                       OverwriteMode mode) {
   ASM_LOCATION("BinaryOpStub_GenerateFPOperation");
 
   Register result = x0;
   FPRegister result_d = d0;
   Register right = x0;
   Register left = x1;
-  Register heap_result = x19;
+  Register heap_result = x21;

[jochen (gone - plz use gerrit), 2014/01/31 13:42:29]

hum, it's a callee preserved reg either way, so probably we should store the
value somewhere if we clobber it?

 
   ASSERT(smi_operands || (not_numbers != NULL));
   if (smi_operands) {
     __ AssertSmi(left);
     __ AssertSmi(right);
   }
   if (left_type == BinaryOpIC::SMI) {
     __ JumpIfNotSmi(left, miss);
   }
   if (right_type == BinaryOpIC::SMI) {
@@ skipping 5730 matching lines @@
   __ Bind(&fast_elements_case);
   GenerateCase(masm, FAST_ELEMENTS);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_A64