Inline toDouble calls on mints

runtime/vm/intermediate_language_arm64.cc

Index: runtime/vm/intermediate_language_arm64.cc
diff --git a/runtime/vm/intermediate_language_arm64.cc b/runtime/vm/intermediate_language_arm64.cc
index 0eecce59ce49e60454b351de0affb867996ec3b6..da1e92aaa83a000256513f7282e90507ceba2a9f 100644
--- a/runtime/vm/intermediate_language_arm64.cc
+++ b/runtime/vm/intermediate_language_arm64.cc
@@ -4406,6 +4406,18 @@ void SmiToDoubleInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
 }
 
 
+LocationSummary* MintToDoubleInstr::MakeLocationSummary(Isolate* isolate,
+                                                        bool opt) const {
+  UNIMPLEMENTED();
+  return NULL;
+}
+
+
+void MintToDoubleInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
+  UNIMPLEMENTED();
+}
+
+
 LocationSummary* DoubleToIntegerInstr::MakeLocationSummary(Isolate* isolate,
                                                            bool opt) const {
   const intptr_t kNumInputs = 1;