VM: New calling convention for generated code.

runtime/vm/flow_graph_compiler.cc

 // Copyright (c) 2013, 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_XXX.
 
 #include "vm/flow_graph_compiler.h"
 
 #include "vm/bit_vector.h"
 #include "vm/cha.h"
@@ skipping 1025 matching lines @@
     intptr_t token_pos,
     intptr_t argument_count,
     LocationSummary* locs,
     const ICData& ic_data) {
   if (FLAG_always_megamorphic_calls) {
     EmitMegamorphicInstanceCall(ic_data, argument_count,
                                 deopt_id, token_pos, locs);
     return;
   }
   ASSERT(!ic_data.IsNull());
-  uword label_address = 0;
+  Code& target = Code::Handle();
   StubCode* stub_code = isolate()->stub_code();
   if (is_optimizing() && (ic_data.NumberOfUsedChecks() == 0)) {
     // Emit IC call that will count and thus may need reoptimization at
     // function entry.
     ASSERT(!is_optimizing()
            || may_reoptimize()
            || flow_graph().IsCompiledForOsr());
     switch (ic_data.NumArgsTested()) {
       case 1:
-        label_address = stub_code->OneArgOptimizedCheckInlineCacheEntryPoint();
+        target = stub_code->OneArgOptimizedCheckInlineCacheCode();
         break;
       case 2:
-        label_address = stub_code->TwoArgsOptimizedCheckInlineCacheEntryPoint();
+        target = stub_code->TwoArgsOptimizedCheckInlineCacheCode();
         break;
       default:
         UNIMPLEMENTED();
     }
-    ExternalLabel target_label(label_address);
-    EmitOptimizedInstanceCall(&target_label, ic_data,
+    EmitOptimizedInstanceCall(target, ic_data,
                               argument_count, deopt_id, token_pos, locs);
     return;
   }
 
   if (is_optimizing() &&
       // Do not make the instance call megamorphic if the callee needs to decode
       // the calling code sequence to lookup the ic data and verify if a JS
       // warning has already been issued or not.
       (!FLAG_warn_on_javascript_compatibility ||
        !ic_data.MayCheckForJSWarning())) {
     EmitMegamorphicInstanceCall(ic_data, argument_count,
                                 deopt_id, token_pos, locs);
     return;
   }
 
   switch (ic_data.NumArgsTested()) {
     case 1:
-      label_address = stub_code->OneArgCheckInlineCacheEntryPoint();
+      target = stub_code->OneArgCheckInlineCacheCode();
       break;
     case 2:
-      label_address = stub_code->TwoArgsCheckInlineCacheEntryPoint();
+      target = stub_code->TwoArgsCheckInlineCacheCode();
       break;
     default:
       UNIMPLEMENTED();
   }
-  ExternalLabel target_label(label_address);
-  EmitInstanceCall(&target_label, ic_data, argument_count,
+  EmitInstanceCall(target, ic_data, argument_count,
                    deopt_id, token_pos, locs);
 }
 
 
 void FlowGraphCompiler::GenerateStaticCall(intptr_t deopt_id,
                                            intptr_t token_pos,
                                            const Function& function,
                                            intptr_t argument_count,
                                            const Array& argument_names,
                                            LocationSummary* locs,
@@ skipping 671 matching lines @@
 
 
 void FlowGraphCompiler::FrameStateClear() {
   ASSERT(!is_optimizing());
   frame_state_.TruncateTo(0);
 }
 #endif
 
 
 }  // namespace dart