A64: Synchronize with r16918.

src/a64/full-codegen-a64.cc

Index: src/a64/full-codegen-a64.cc
diff --git a/src/a64/full-codegen-a64.cc b/src/a64/full-codegen-a64.cc
index 82e108db68456f03f4a89b991048dfa006728ad8..00b485fe21b8ee810404c91d489e7719b57b0b8f 100644
--- a/src/a64/full-codegen-a64.cc
+++ b/src/a64/full-codegen-a64.cc
@@ -3338,8 +3338,9 @@ void FullCodeGenerator::EmitSetValueOf(CallRuntime* expr) {
 void FullCodeGenerator::EmitNumberToString(CallRuntime* expr) {
   ZoneList<Expression*>* args = expr->arguments();
   ASSERT_EQ(args->length(), 1);
-  // Load the argument on the stack and call the stub.
-  VisitForStackValue(args->at(0));
+
+  // Load the argument into x0 and call the stub.
+  VisitForAccumulatorValue(args->at(0));
 
   NumberToStringStub stub;
   __ CallStub(&stub);