Call compiled static targets directly instead of resolving them at first call.

runtime/vm/flow_graph_compiler_x64.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_X64.
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/flow_graph_compiler.h"
 
 #include "lib/error.h"
@@ skipping 1096 matching lines @@
 
 void FlowGraphCompiler::EmitStaticCall(const Function& function,
                                        const Array& arguments_descriptor,
                                        intptr_t argument_count,
                                        intptr_t deopt_id,
                                        intptr_t token_pos,
                                        LocationSummary* locs) {
   ASSERT(!IsLeaf());
   __ LoadObject(RBX, function);
   __ LoadObject(R10, arguments_descriptor);
-  GenerateDartCall(deopt_id,
-                   token_pos,
-                   &StubCode::CallStaticFunctionLabel(),
-                   PcDescriptors::kFuncCall,
-                   locs);
+  if (function.HasCode()) {
+    const Code& code = Code::Handle(function.CurrentCode());
+    ExternalLabel target_label(function.ToFullyQualifiedCString(),
+                               code.EntryPoint());
+    GenerateDartCall(deopt_id,
+                     token_pos,
+                     &target_label,
+                     PcDescriptors::kFuncCall,
+                     locs);
+  } else {
+    GenerateDartCall(deopt_id,
+                     token_pos,
+                     &StubCode::CallStaticFunctionLabel(),
+                     PcDescriptors::kFuncCall,
+                     locs);
+  }
   __ Drop(argument_count);
 }
 
 
 void FlowGraphCompiler::LoadDoubleOrSmiToXmm(XmmRegister result,
                                              Register reg,
                                              Register temp,
                                              Label* not_double_or_smi) {
   Label is_smi, done;
   __ testq(reg, Immediate(kSmiTagMask));
@@ skipping 207 matching lines @@
 void ParallelMoveResolver::Exchange(const Address& mem1, const Address& mem2) {
   __ Exchange(mem1, mem2);
 }
 
 
 #undef __
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64