Split IdenticalWithNumberCheck in two versions: once called from unoptimized code the other called…

runtime/vm/flow_graph_compiler_x64.cc

Index: runtime/vm/flow_graph_compiler_x64.cc
===================================================================
--- runtime/vm/flow_graph_compiler_x64.cc	(revision 24547)
+++ runtime/vm/flow_graph_compiler_x64.cc	(working copy)
@@ -1427,7 +1427,11 @@
   if (needs_number_check) {
     __ pushq(reg);
     __ PushObject(obj);
-    __ call(&StubCode::IdenticalWithNumberCheckLabel());
+    if (is_optimizing()) {
+      __ call(&StubCode::OptimizedIdenticalWithNumberCheckLabel());
+    } else {
+      __ call(&StubCode::UnoptimizedIdenticalWithNumberCheckLabel());
+    }
     AddCurrentDescriptor(PcDescriptors::kRuntimeCall,
                          Isolate::kNoDeoptId,
                          token_pos);
@@ -1447,7 +1451,11 @@
   if (needs_number_check) {
     __ pushq(left);
     __ pushq(right);
-    __ call(&StubCode::IdenticalWithNumberCheckLabel());
+    if (is_optimizing()) {
+      __ call(&StubCode::OptimizedIdenticalWithNumberCheckLabel());
+    } else {
+      __ call(&StubCode::UnoptimizedIdenticalWithNumberCheckLabel());
+    }
     AddCurrentDescriptor(PcDescriptors::kRuntimeCall,
                          Isolate::kNoDeoptId,
                          token_pos);