Add UseAny to create a LOperand without register preference....

src/x64/lithium-x64.cc

Index: src/x64/lithium-x64.cc
===================================================================
--- src/x64/lithium-x64.cc	(revision 6346)
+++ src/x64/lithium-x64.cc	(working copy)
@@ -571,6 +571,13 @@
 }
 
 
+LOperand* LChunkBuilder::UseAny(HValue* value) {
+  return value->IsConstant()
+      ? chunk_->DefineConstantOperand(HConstant::cast(value))
+      :  Use(value, new LUnallocated(LUnallocated::ANY));
+}
+
+
 LOperand* LChunkBuilder::Use(HValue* value, LUnallocated* operand) {
   if (value->EmitAtUses()) {
     HInstruction* instr = HInstruction::cast(value);
@@ -863,11 +870,7 @@
     } else if (value->IsPushArgument()) {
       op = new LArgument(argument_index++);
     } else {
-      op = UseOrConstant(value);
-      if (op->IsUnallocated()) {
-        LUnallocated* unalloc = LUnallocated::cast(op);
-        unalloc->set_policy(LUnallocated::ANY);
-      }
+      op = UseAny(value);
     }
     result->AddValue(op, value->representation());
   }