X64 tweaks.

src/x64/full-codegen-x64.cc

 // Copyright 2011 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 2740 matching lines @@
 #endif
   __ CallCFunction(ExternalReference::random_uint32_function(isolate()), 1);
 
   // Convert 32 random bits in rax to 0.(32 random bits) in a double
   // by computing:
   // ( 1.(20 0s)(32 random bits) x 2^20 ) - (1.0 x 2^20)).
   __ movl(rcx, Immediate(0x49800000));  // 1.0 x 2^20 as single.
   __ movd(xmm1, rcx);
   __ movd(xmm0, rax);
   __ cvtss2sd(xmm1, xmm1);
-  __ xorpd(xmm0, xmm1);
+  __ xorps(xmm0, xmm1);
   __ subsd(xmm0, xmm1);
   __ movsd(FieldOperand(rbx, HeapNumber::kValueOffset), xmm0);
 
   __ movq(rax, rbx);
   context()->Plug(rax);
 }
 
 
 void FullCodeGenerator::EmitSubString(ZoneList<Expression*>* args) {
   // Load the arguments on the stack and call the stub.
@@ skipping 1533 matching lines @@
   __ ret(0);
 }
 
 
 #undef __
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64