Inline indexed load and store of typed array float64.

runtime/vm/flow_graph_compiler_x64.cc

Index: runtime/vm/flow_graph_compiler_x64.cc
===================================================================
--- runtime/vm/flow_graph_compiler_x64.cc	(revision 13666)
+++ runtime/vm/flow_graph_compiler_x64.cc	(working copy)
@@ -26,6 +26,24 @@
 DEFINE_FLAG(bool, trap_on_deoptimization, false, "Trap on deoptimization.");
 
 
+FieldAddress FlowGraphCompiler::ElementAddressForRegIndex(intptr_t cid,
+                                                          Register array,
+                                                          Register index) {
+  // Note that index is Smi, i.e, times 2.
+  ASSERT(kSmiTagShift == 1);
+  switch (cid) {
+    case kArrayCid:
+    case kImmutableArrayCid:
+      return FieldAddress(array, index, TIMES_4, sizeof(RawArray));
+    case kFloat64ArrayCid:
+      return FieldAddress(array, index, TIMES_4, Float64Array::data_offset());
+    default:
+      UNIMPLEMENTED();
+      return FieldAddress(SPREG, 0);
+  }
+}
+
+
 bool FlowGraphCompiler::SupportsUnboxedMints() {
   return false;
 }