x64 port of r42717.

runtime/vm/intrinsifier_x64.cc

Index: runtime/vm/intrinsifier_x64.cc
===================================================================
--- runtime/vm/intrinsifier_x64.cc	(revision 42717)
+++ runtime/vm/intrinsifier_x64.cc	(working copy)
@@ -76,7 +76,7 @@
   // Store backing array object in growable array object.
   __ movq(RCX, Address(RSP, kArrayOffset));  // data argument.
   // RAX is new, no barrier needed.
-  __ StoreIntoObjectNoBarrier(
+  __ InitializeFieldNoBarrier(
       RAX,
       FieldAddress(RAX, GrowableObjectArray::data_offset()),
       RCX);
@@ -84,7 +84,7 @@
   // RAX: new growable array object start as a tagged pointer.
   // Store the type argument field in the growable array object.
   __ movq(RCX, Address(RSP, kTypeArgumentsOffset));  // type argument.
-  __ StoreIntoObjectNoBarrier(
+  __ InitializeFieldNoBarrier(
       RAX,
       FieldAddress(RAX, GrowableObjectArray::type_arguments_offset()),
       RCX);
@@ -286,7 +286,7 @@
   /* RAX: new object start as a tagged pointer. */                             \
   /* RCX: new object end address. */                                           \
   __ movq(RDI, Address(RSP, kArrayLengthStackOffset));  /* Array length. */    \
-  __ StoreIntoObjectNoBarrier(RAX,                                             \
+  __ InitializeFieldNoBarrier(RAX,                                             \
                               FieldAddress(RAX, type_name::length_offset()),   \
                               RDI);                                            \
   /* Initialize all array elements to 0. */                                    \
@@ -1778,7 +1778,7 @@
 
   // Set the length field.
   __ popq(RDI);
-  __ StoreIntoObjectNoBarrier(RAX,
+  __ InitializeFieldNoBarrier(RAX,
                               FieldAddress(RAX, String::length_offset()),
                               RDI);
   // Clear hash.